VOID DETECTION SYSTEM

A void detection system for detecting voids in fresh concrete is disclosed. The void detection system includes at least one probe disposed on a vibrator and adapted to detect voids in the fresh concrete, and an indicator in communication with the at least one probe and adapted to receive real-time data from the at least one probe. Upon receiving the real-time data, the indicator relays information to a user indicative of the fresh concrete's consolidation. 1. A void detection system effective in detecting voids in fresh concrete , comprising:(a) at least one probe disposed on a vibrator and adapted to detect voids in the fresh concrete;(b) an indicator in communication with the at least one probe and adapted to receive real-time data from the at least one probe, wherein upon receiving the real-time data, the indicator relays information to a user indicative of the fresh concrete's consolidation.2. The void detection system according to claim 1 , wherein the at least one probe is a gamma density probe.3. The void detection system according to claim 1 , wherein the at least one probe is an electrical conductivity probe.4. The void detection system according to claim 1 , wherein the at least one probe is a P-wave velocity probe.5. The void detection system according to claim 1 , wherein the at least one probe is a time-domain reflectometry probe.6. The void detection system according to claim 1 , wherein the void detection system includes a plurality of probes disposed on the vibrator claim 1 , including a gamma density probe claim 1 , an electrical conductivity probe claim 1 , a P-wave velocity probe claim 1 , and a time-domain reflectometry probe.7. The void detection system according to claim 1 , wherein the indicator provides a Go/No-Go indication to the user.8. A void detection system effective in detecting voids in fresh concrete claim 1 , comprising:(a) a vibrator adapted to vibrate fresh concrete and improve concrete consolidation;(b) a plurality of probes ...

MEASUREMENT OF PROPERTIES OF SAMPLE OF CURING COMPOSITIONS UNDER HIGH PRESSURE

A method for testing a curing composition, comprising includes a curing composition; injecting the curing composition into a mold; curing the curing composition into a cured composition, in the mold at a controlled curing pressure; measuring at least one physical or mechanical property of the cured sample at a controlled test pressure, in the mold; the mold being rigid relatively to the cured sample during the curing step. 116-. (canceled)17. A method for testing a curing composition , the method comprising:providing a curing composition;injecting the curing composition into a mold;curing the curing composition into a cured sample, in the mold, at a controlled curing pressure; andmeasuring at least one physical or mechanical property of the cured sample at a controlled test pressure, in the mold;wherein the mold is rigid relative to the cured sample during the curing step.18. The method according to claim 17 , wherein the mold includes a main axis claim 17 , further comprising controlling the curing pressure by a stress exerted on the sample along the main axis of the mold.19. The method according to claim 17 , wherein the mold is also rigid relative to the cured sample during the measurement step claim 17 , the mold including a stainless steel wall.20. The method according to claim 19 , further comprising controlling the test pressure through at least one of: (a) by injecting an internal fluid into the mold claim 19 , and (b) by a stress exerted on the sample along the main axis of the mold.21. The method according to claim 17 , wherein the curing composition is selected from compositions of gels claim 17 , resins claim 17 , muds and hydraulic binders.22. The method according to claim 17 , wherein the mold is of cylindrical shape.23. The method according to claim 17 , further comprising regulating the temperature of the sample during at least one of: (a) the curing step claim 17 , and (b) the measurement step claim 17 , by maintaining the sample under adiabatic ...

METHOD AND APPARATUS FOR TESTING LOAD-BEARING CAPACITY

In an embodiment, a hydraulic jack is provided having a first portion and a second portion. The first portion attached to a first section of a structure and the second portion attached to a second section of the structure. When a pressurized fluid is forced between the first portion and the second portion, a load is transferred to the first section and the second section by the pressure of the fluid on the first portion and the second portion. The first section and the second section are forced apart by the load, thus creating or enlarging at least one void in the structure. The pressurized fluid fills or partially fills one or more of the at least one void, thereby increasing the surface area effectively normal to the direction of the load in contact with the pressurized fluid. 1. A method of applying a load to a pile , comprising:locating a top portion below a top section of a pile, wherein the top portion is attached to the top section of the pile;locating a bottom portion below and proximate the top portion and above a bottom section of the pile, wherein the bottom portion is attached to the bottom section of the pile, wherein at least a portion of the cross-section of the top portion and at least a portion of the cross-section of the bottom portion is open before casting the pile, and wherein the top section of the pile and the bottom section of the pile are contiguous through the open portion of the cross-section of the top portion and the open portion of the cross-section of the bottom portion;injecting a pressurized fluid between the top portion and the bottom portion, wherein injecting the pressurized fluid between the top portion and the bottom portion causes the top portion and the bottom portion to be pushed apart, the top portion to push up on the top section of the pile with an initial upward force, the bottom portion to push down on the bottom section of the pile with an initial downward force, and at least one void to be created between the top ...

METHOD FOR NON-DESTRUCTIVE CONDITION ASSESSMENT AND STRUCTURAL MONITORING OF CONCRETE RAILROAD TIES IN TRACK

A non-destructive testing method to evaluate the structural integrity of pre-stressed concrete railroad ties in track to identify deterioration and the eventual loss of bond between the reinforcing wires and the surrounding concrete. The application of an impact echo system to the end of each railroad tie will identify ties that have deteriorated to the extent that structural cracks have formed. The method includes employing a tool having a plurality of transducers and a single impinger to impart sound waves through a top surface of the railroad tie and to receive and evaluate the echoes of the sound waves to determine if the tie is structurally sound or structurally unsound. 1. A device for performing an in-track condition assessment of a concrete railroad tie utilizing impact echo pulses , comprising:a base;a plurality of transducers attached to the base which are capable of detecting an echo of a sound wave; anda single impinger connected to the plurality of transducers which is capable of imparting a sound wave.2. The device of wherein the plurality of transducers is three transducers.3. The device of wherein the base comprises a container which holds associated electronics for the plurality of transducers and the single impinger.4. The device of further comprising an indexing feature connected to the base.5. The device of further comprising a mechanism that allows the plurality of transducers to independently adjust to provide proper contact with the railroad tie.6. The device of further comprising an assessment mechanism to compare a nominal thickness of the railroad tie with an apparent depth measurement to determine if the railroad tie is structurally sound or structurally unsound.7. The device of wherein the assessment mechanism is capable to detect at least one of the conditions selected from the group consisting of deterioration claim 6 , cracking and wire recession capable of leading to structure failure.8. The device of wherein the assessment mechanism ...

MEASUREMENT SYSTEM FOR A PILE

The invention relates to a measuring system for controlling perpendicularity of a pile during driving of the pile, wherein the measurement system comprises; 117-. (canceled)18111. Measuring system () for controlling perpendicularity of a pile () during driving of the pile , wherein the measurement system comprises;{'b': 2', '10, 'a mounting frame () for coupling the measuring system with a pile driving system (),'}{'b': 3', '4', '4, 'i': a', 'b, 'a measuring frame () provided with at least one measuring device (, ) for measuring perpendicularity, the measuring frame being moveably coupled with the mounting frame and moveable between a first position for engaging the pile for measuring the perpendicularity of the pile, and a second position for engaging the pile driving system for measuring perpendicularity of the pile driving system.'}1914. Measuring system according to claim 18 , comprising a pretensioning system () coupled with the mounting frame and the measuring frame for pretensioning the measuring frame towards one of the first and the second position for measuring perpendicularity in a reproducible manner.2016. Measuring system according to claim 19 , wherein the pretension system comprises a passive resilient member () for pretensioning the measuring frame towards one of the first and the second position.2155ab. Measuring system according to claim 19 , wherein the pretension system comprises a measuring frame driving system ( claim 19 , ) for driving and/or pretensioning the measuring frame towards one of the first and the second position.22. Measuring system according to claim 21 , wherein the passive resilient member is arranged for pretensioning the measuring frame towards the second position and the frame driving system is arranged for pretensioning the measuring frame towards the first position.2318. Measuring system according to claim 19 , wherein the pretensioning system claim 19 , in use claim 19 , has line of action () along which line the measuring ...

SYSTEM AND METHOD FOR RAPID MEASUREMENT OF THE AIR VOID DISTRIBUTION OF FRESH CONCRETE

According to an embodiment, there is provided herein a method of determining the air void distribution in a sample of fresh concrete. One embodiment of the invention determines a parameter related to air void distribution by applying a known pressure to a fresh concrete sample, measuring a first value representative of the volume under compression, releases at least a portion of the pressure, reapplies the same pressure to the sample, measures a second value representative of the volume under the second compression, and uses differential between the first and second values to estimate a parameter related to the air void distribution. 1. A method of determining a parameter indicative of an air void distribution of a concrete sample , wherein is provided a first and a second container configurable to be placed into fluid communication with each other , the method comprising:a. placing said concrete sample in said first container;b. pressurizing said second container to a first pressure;c. placing said first container and said second container in fluid communication;d. determining a first equilibrium pressure;e. releasing at least a part of the pressure in the first container;f. removing said first and second container from fluid communication;g. pressurizing said second container to a second pressure;h. bringing said first container and said second container back into fluid communication with each other;i. determining a second equilibrium pressure; and,j. using at least said first equilibrium pressure and said second equilibrium pressure to determine said parameter indicative of said air void distribution of said concrete sample.2. A method of determining a parameter indicative of an air void distribution of a concrete sample according to claim 1 , wherein step (a) comprises the steps of:(a1) placing said concrete sample in said first container, and,(a2) adding a fluid to said first container containing said concrete until it is substantially full.3. A method of ...

Strength test method for anchor installed underwater and floating body

A simplified structure allows inspection of the installation strength of an anchor installed underwater. A method includes applying, to an anchor, a lifting force from above a floating body floating on a water surface to submerge the floating body into water, and setting a volume of submergence by which the floating body is submerged to a value to produce a lifting force corresponding to a predetermined installation strength and determining whether the anchor is immovable. The volume of submergence by which the floating body is submerged to produce the lifting force corresponding to the predetermined installation strength is calculated based on the buoyancy acting on the floating body.

Apparatus for bi-directional load testing of driven piles and injection piles, and method thereof

An apparatus for carrying out bi-directional load testing of close ended driven piles and injection piles utilizing a hydraulic jack, comprising an enclosure for housing the hydraulic jack. The apparatus includes a first hollow body, a second hollow body and a third hollow body. The first hollow body has an open upper end, an open lower end, and a base for attaching the top of the hydraulic jack. The second hollow body has an open upper end, an open lower end, and a base for attaching the base of the hydraulic jack. The third hollow body has an open upper end and an open lower end, and has an inner diameter corresponding to the outer diameter of the first hollow body and the second hollow body, the third hollow body being capable of being axially received by both the first hollow body and the second hollow body.

Sensor device, and systems and methods for obtaining measurements of selected characteristics of a concrete mixture

A sensor device includes a housing having a hole allowing substances to pass from an exterior of the housing to an interior of the housing, and a printed circuit board having a humidity sensor and at least one electronic component. The sensor device also includes a tube comprising a waterproof material, wherein a first end of the tube surrounds the humidity sensor, wherein a first seal is formed by between the first end of the tube and the printed circuit board, wherein a second end of the tube is located proximate the hole. The sensor device also includes a waterproof, breathable material layer disposed between the second end of the tube and the hole, wherein a second seal is formed between the material layer and the housing, wherein a third seal is formed between the material layer and the second end of the tube. The hole and the material layer allow water vapor to pass from the exterior to the humidity sensor. The first, second, and third seals prevent the water vapor from reaching the at least one electronic component.

TEST EQUIPMENT DETERMINING CONCRETE COMPRESSIVE STRENGTH CLASS

This invention is test equipment for determining a concrete's compressive strength class and characteristic equivalent cube compressive strength value while the concrete is in its fresh concrete period. 1. A test equipment for determining a concrete's compressive strength class , which is characterized by concrete cabin and operating system cabin.21011. The concrete cabin of claim 1 , wherein a chrome mobile cover with a minimum 2-mm internal wall () and silicon-based tubular joint ring ().31516171819202122232425262728. The concrete cabin of claim 1 , wherein the concrete cabin including heat insulation () claim 1 , water disposal system () claim 1 , water heater resistance () claim 1 , water precipitation apparatus () claim 1 , steel spiral hose () claim 1 , water balance and disposal system () claim 1 , water tank () claim 1 , water tank transporter cantilevers () claim 1 , fresh concrete bucket () claim 1 , rubber wheels () claim 1 , testing set transporter and routing levers () claim 1 , fresh concrete bucket transporter and holding shanks () claim 1 , chrome bath () claim 1 , and balance () parts.4987512431323334353637. The concrete cabin of claim 1 , wherein the LCD result screen () claim 1 , data entry control keyboard () claim 1 , PLC controller power button () claim 1 , energy power button () claim 1 , fresh concrete thermometer entry/exit point () claim 1 , electrical resistivity meter entry/exit point () claim 1 , heat treatment J-type thermocouple entry/exit point () claim 1 , contactor () claim 1 , system operational lighting () claim 1 , microprocessor card-PLC () claim 1 , empirical equation () claim 1 , power pack transducer () claim 1 , temperature sensor () and electrical resistivity sensor ().533. The microprocessor card-PLC () of claim 4 , including the empirical equation conducting calculations to determine the concrete's compressive strength class.621211530. The water tank () of claim 3 , wherein the water tank () includes heat insulation () ...

Measuring Device, and Systems and Methods for Obtaining Data Relating to Condition and Performance of Concrete Mixtures

A measuring device is embedded in a section of concrete at a location at a construction site, the measuring device being adapted to obtain a measurement of a first characteristic of the section of concrete and transmit the measurement via wireless transmission. The first characteristic may include temperature, humidity, conductivity, impedance, salinity, etc. A local wireless gateway receives the measurement data and transmits the data to a processor. Alternatively, an airborne drone flying above the construction site receives the measurement data and transmits the data to the processor. The processor generates a predicted second characteristic of the section of concrete based on the measurement data. For example, the second characteristic may include strength, slump, age, maturity, etc., of the concrete. 1. A system comprising:a structure comprising a concrete mixture; a shell comprising a first portion and a second portion, the first portion being detachably connected to the second portion, the first and second portions defining an enclosed volume;', a sensor device including one of a temperature sensor adapted to generate a temperature measurement, a salinity sensor adapted to generate a salinity measurement, a conductivity sensor adapted to generate a conductivity measurement, an impedance sensor adapted to generate an impedance measurement, and a humidity sensor adapted to generate a humidity measurement; and', 'an antenna adapted to transmit data representing at least one of the temperature measurement, the salinity measurement, the conductivity measurement, the impedance measurement, and the humidity measurement; and, 'wherein the enclosed volume comprises, receive from each respective measuring device embedded in the concrete mixture data pertaining to the concrete mixture; and', 'determine one or more characteristics of the concrete mixture based on the data received., 'a processor adapted to], 'a plurality of measuring devices embedded at respective ...

Systems, Methods and Apparatus for Obtaining Data Relating to Condition and Performance of Concrete Mixtures

A sensing device includes a shell comprising an elastomeric material, the shell including a first portion having a first end and a second portion having a second end. The shell may be egg-shaped. The first portion includes a conducting disc and a plate that includes a temperature sensor, a location sensor, and a micro-fiber composite sensor. The first portion also includes an antenna and a first electrode extending through a first hole in the first portion of the shell. The second portion includes a quantity of a metallic substance embedded on the inside surface of an end of the second portion, and a second electrode extending through a second hole in the second portion of the shell. The sensing device may be inserted into a concrete mixture, obtain measurements relating to the concrete mixture, and transmit data to a database.

TEST SYSTEM AND TEST METHOD FOR DETECTING CEMENT CONTENT OF CEMENT MIXING PILE BODY IN REAL TIME

The present invention discloses a test system and a test method for detecting the cement content of cement stirring pile body in real time at a construction site. The test system specifically includes a cement slurry density measuring apparatus and a cement admixing amount calculating apparatus. The method includes measuring the density of the cement slurry in the cement slurry tank, measuring the cement soil density and inputting measured values to calculate the cement content. The cement slurry density and the cement soil density can be detected in real time, so that the admixing amount of the cement can be detected in real time during the foundation reinforcing process of the underground engineering, convenience and rapidness are achieved, the time period is short, a supervision effect is good, and cheating on workmanship and materials can be effectively avoided. 1. A test system for detecting cement content of a cement stirring pile body in real time , comprising a cement slurry density measuring apparatus and a cement admixing amount calculating apparatus , wherein ,the cement slurry density measuring apparatus comprises a first electric control center, a measuring wire electrically connected with the first electric control center and a plurality of first pressure sensors; the first electric control center comprises a power supply, a switch, a voltmeter, a resistor, a data processing module and a first display module: when the measuring wire perpendicularly drops to contact with a cement slurry liquid surface from a top of a cement slurry tank, a numerical value of the voltmeter changes; the first pressure sensors are arranged at a bottom wall of the cement slurry tank, and a pressure test data is fed back to the data processing module, and a cement slurry density is calculated and then displayed on the first display module; andthe cement admixing amount calculating apparatus comprises a second electric control center and a second pressure sensor electrically ...

DEVICES, SYSTEMS, AND METHODS FOR INSTALLING AND LOAD TESTING EARTH ANCHOR FOUNDATIONS

Devices, systems, and methods for installing earth anchor foundations and/or conducting load tension tests on earth anchors used to secure structures, such as solar platforms, trellises, tents, decking, bleachers, telephone poles, powerlines, construction scaffolding, and the like. In one example, the device includes a base plate, a plurality of elongate telescoping members extending from the base plate and containing a crank mechanism. A drive shaft on the upper member is coupled to the crank mechanism to raise and lower the upper member relative to the base plate. A support arm or shelf is provided on the upper member for raising a frame during installation of the structure, and a testing hook is provided on the upper member for conducting a load tension test on one or more earth anchors used to secure the structure using a load measurement device coupled to the hook and the earth anchor(s). 1. A device for installing and/or testing earth anchors for securing a structure , comprising:a base plate defining an upper surface;an elongate first member including a lower end mounted to the upper surface of the base plate along an axis extending from the upper surface;an elongate second member telescopingly mounted to the first member;an actuator on the second member coupled to a crank mechanism inside one or both of the first and second members to selectively move the second member along the axis towards or away from the base plate;a support arm extending from the second member substantially perpendicular to the axis; anda testing hook on the second member for conducting a load tension test on an earth anchor coupled to the hook.2. The device of claim 1 , further comprising a load measuring device connectable to the hook claim 1 , the load measuring device comprising a connector for coupling to an exposed end of an earth anchor installed into the ground to measure a tensile force application to the earth anchor when the actuator is activated to raise the second member ...

Load Cell Component for Improving Structural Strength of Pile Body after Self-Balanced Testing of Pile Foundation

The invention discloses a load cell component for improving the structural strength of a pile body after self-balanced testing of a pile foundation, which comprises a loading unit component, upper displacement rod components fixed on the upper part of the loading unit component, and lower displacement rod components fixed on the lower part of the loading unit component, and further comprises telescopic rod components and a grouting component; there is a plurality of telescopic rod components, the telescopic rod components are fixed to the loading unit component, and the telescopic direction of the telescopic rod components is parallel to the loading direction of the loading unit component; each telescopic rod component comprises an inner rod and an outer sleeve, wherein a part of the inner rod is positioned in the outer sleeve, a slurry cavity is formed between the outer wall of the inner rod positioned in the outer sleeve and the inner wall of the outer sleeve, and the outer sleeve is provided with a slurry inlet; and the grouting component communicates with the slurry inlets, and when in use, slurry is introduced into the slurry cavities through the grouting component. 1. A load cell component for improving the structural strength of a pile body after self-balanced testing of a pile foundation , comprising a loading unit component , upper displacement rod components fixed on the upper part of the loading unit component , and lower displacement rod components fixed on the lower part of the loading unit component , characterized in that the load cell component further comprises telescopic rod components and a grouting component; there is a plurality of telescopic rod components , the telescopic rod components are fixed to the loading unit component , and the telescopic direction of the telescopic rod components is parallel to the loading direction of the loading unit component; each telescopic rod component comprises an inner rod and an outer sleeve , wherein a part ...

METHOD AND SYSTEM FOR DETERMINING IN REAL TIME BEARING CAPACITY OF FOUNDATION TAMPED BY HIGH-SPEED HYDRAULIC TAMPER

A method and system determines in real time the bearing capacity of a foundation tamped by a high-speed hydraulic tamper. Four wireless acceleration sensors are arranged uniformly along tamping plate edges, sensor position tamping points are determined; the soil is tamped, the plate peak acceleration slows, tends to, and reaches stabilization in a range, a relationship curve between the tamping number and plate peak acceleration is determined; different loads are applied to the foundation to obtain corresponding settlements, coordinate axes are established, points are drawn according to each test data group and sequentially connected with a smooth curve to obtain a settlement-load curve, and the curve is fitted; a tamping number and foundation bearing capacity relationship is obtained; the two relationship curves are combined to obtain a relationship curve, and the foundation bearing capacity magnitude at a certain moment during the tamping operation is determined by using the acceleration index. 1. A method for determining in real time bearing capacity of a foundation tamped by a high-speed hydraulic tamper , comprising the following steps:arranging four wireless acceleration sensors uniformly along edges of a tamping plate, and determining a position tamping point of each wireless acceleration sensor;tamping soil multiple times with certain tamping energy, wherein a peak acceleration of the tamping plate changes from fast to slow, then gradually tends to be stable, and finally stabilizes in a range; determining a relationship curve between a number of tamping and the peak acceleration of the tamping plate;applying different loads to foundation to obtain corresponding settlements under different loads, establishing coordinate axes using the settlements as horizontal coordinates and the loads as vertical coordinates, drawing points according to each group of test data, sequentially connecting the points with a smooth curve to obtain a settlement-load curve, and ...

SYSTEMS, METHODS, AND MACHINES FOR AUTOMATED SCREW ANCHOR DRIVING

In a machine for driving screw anchors and other foundation components, a desired embedment depth is calculated based on a minimum required embedment depth, work point height and length of available upper leg sections. Once calculated, the machine automatically drives the screw anchor to the depth so that one of the available upper leg lengths will fit between the driven screw anchor and apex truss hardware. If uplift is detected during driving, the machine will add additional embedment depth. In-situ validation of driven screw anchors may be performed after the embedment depth is reached.

DEVICE FOR CENTRIFUGE TESTING OF DRIVEN PILE IN DIFFERENT INSTALLATION AND PULL-OUT MODES AND OPERATION METHOD THEREFOR

The present disclosure discloses a device for centrifuge testing of a driven pile in different installation and pull-out modes, including a supporting system, a pile driving system, a pile-soil system and a measurement and acquisition system. The present disclosure further provides a method for operating the device for centrifuge testing of a driven pile in different installation and pull-out modes. The present disclosure can perform geotechnical centrifuge testing of a driven pile through penetration in different installation modes and pull-out in different pull-out modes, and provide the effective test device and method for study of a pile-soil mutual dynamic response during a whole process of penetration and a process of pull-out of the driven pile. Moreover, pile-soil deformation characteristics and the like during the processes of penetration and pull-out can be visually observed through a high-speed camera or a digital camera, and the pull-out and penetration can be tested separately. 1. A device for centrifuge testing of a driven pile in different installation and pull-out modes , comprising a supporting system , a pile driving system , a pile-soil system and a measurement and acquisition system , whereinthe supporting system comprises a vertical supporting system and a pile driving frame supporting system; the vertical supporting system comprises a threaded rigid column, a vertical outer support frame, a vertical inner support frame and a bottom rigid plate; the vertical supporting system is configured to support an entire test model and connected to a corresponding device of the centrifuge, and at the same time provides a supporting platform for a pile driving frame in the model; the vertical outer support frame is movably connected to the threaded rigid column, and is controlled to lift by a vertical support lifting motor; the pile driving frame supporting system is configured to support the pile driving frame and comprises an upper pile driving frame ...

SOIL QUALITY DETERMINATION DEVICE, SOIL QUALITY DETERMINATION METHOD, AND RECORDING MEDIUM HAVING PROGRAM STORED THEREON

Provided is a technology for soil quality determination that makes it possible to calculate the safety rate of a slope without determining the soil properties of soil to be measured beforehand. A soil quality determination device B according to an embodiment of the present invention is provided with a vibration feature value calculation unit for calculating a vibration feature value on the basis of vibration data expressing the vibration of given soil subjected to vibration while having water repeatedly added thereto and a soil quality determination unit for determining the quality of the given soil on the basis of a water feature value distribution for the given soil expressing the relationship between the amount of water measured during the acquisition of the vibration data and the vibration feature value, the degree of similarity between the water feature value distributions of a soil type that is a type of soil from which the water feature value distribution is obtained and the given soil, and the properties of the soil type. 1. A soil quality determination device comprising:a memory that stores a set of instructions; andat least one processor configured to execute the set of instructions to:calculate a vibration feature value, based on vibration data representing vibration of a target soil to which vibration is applied with repeated water addition; anddetermine a quality of the target soil, based on a water amount-feature value distribution of the target soil, the distribution representing a relation between a water amount measured when the vibration data are acquired and the vibration feature value, an extent of similarity of the water amount-feature value distribution between a soil type being a type of a soil from which the water amount-feature value distribution is obtained and the target soil, and a quality of the soil type.2. The soil quality determination device according to claim 1 , whereinthe at least one processor is configured to:calculate, based on ...

APPARATUS FOR TESTING OF WATER PERMEABILITY OF SAMPLES OF BUILDING FACADES

Apparatus for testing of the water permeability of samples of building facades comprising a frame () on one side of which a sample of the facade to be tested () is fixed, and a grid () on which nozzles () which spray water on the sample of the facade to be tested () are arranged, characterized in that said apparatus is equipped with a movement system () of the grid () from a working position positioned in front of the facade sample to be tested () to a rest position positioned behind the frame () on the opposite side to that on which is located the sample () and that the grid () on which nozzles () are set up slides on elements of the frame placed at a predetermined distance from the sample to be tested (). 13251245232512. Apparatus for testing of the water permeability of samples of building facades comprising a frame () on one side of which a sample of the facade to be tested () is fixed , and a grid () on which nozzles () which spray water on the sample of the facade to be tested () are arranged , characterized in that said apparatus is equipped with a movement system () of the grid () from a working position positioned in front of the facade sample to be tested () to a rest position positioned behind the frame () on the opposite side to that on which is located the sample () and that the grid () on which nozzles () are set up slides on elements of the frame placed at a predetermined distance from the sample to be tested ().2. Apparatus for testing water permeability of samples of building facades according to characterized in that the nozzles are fed by parallel tubes placed at a predetermined distance from each other.3. Apparatus for testing water permeability of samples of building facades according to characterized in that the tubes are fed by a distribution column placed at one end of each tube.4. Apparatus for testing water permeability of samples of building facades according to characterized in that the tubes are interrupted at the center and each half ...

SENSING DEVICE, AND SYSTEMS AND METHODS FOR OBTAINING DATA RELATING TO CONCRETE MIXTURES AND CONCRETE STRUCTURES

A system includes at least one sensing device located within a structure being built as part of a construction project. The sensing device obtains measurements relating to a first characteristic of concrete of the structure and transmits the data wirelessly. The system also includes a memory, and a processor adapted to receive the data from the sensing devices, determine a second characteristic of the concrete based on the data, and generate a schedule of activities based on the second characteristic. The schedule may be a project schedule specifying tasks associated with the construction project. The processor is also adapted to cause at least one activity to be performed based on the schedule of activities. 1. A method comprising:inserting a plurality of sensing devices into one or more concrete structures associated with a construction project, wherein each sensing device is adapted to obtain measurements relating to one or more first characteristics of concrete within a respective concrete structure and transmit the data wirelessly;receiving data relating to the one or more first characteristics of the concrete within the one or more concrete structures from the plurality of sensing devices;determining at least one second characteristic of at least one of the one or more concrete structures based on the data;generating a schedule of activities associated with the construction project based on the at least one second characteristic; andperforming at least one activity based on the schedule of activities.2. The method of claim 1 , wherein the one or more first characteristics include one of a temperature measurement claim 1 , a pH measurement claim 1 , an inductance measurement claim 1 , an impedance measurement claim 1 , a resistivity measurement claim 1 , a sonic measurement claim 1 , a pressure measurement claim 1 , and a conductivity measurement.3. The method of claim 1 , wherein the at least one second characteristic includes one of strength claim 1 , ...

Multi-Purpose Tube for Oil Well Cement Testing

Embodiments of a sample testing system of the present invention generally include two internally threaded caps; an externally threaded outer tube having a tapered internal bore and external circumferential grooves proximate each end thereof; an O-ring seated in each groove; and a plurality of inner tube sections cooperatively arranged to form an externally tapered inner tube structure that is disposed within the outer tube; wherein each cap is sealingly attached to an end of the outer tube via threading engagement therewith. Various embodiments utilize at least one closed-ended cap and/or at least one cap having a port extending through an end thereof, which may also incorporate a piston cavity and a piston having two circumferentially disposed O-rings. Embodiments allow for inner tube structure removal and separation of the inner tube sections for cured sample recovery. Embodiments of a method of using the system to cure a sample are also provided. 1. A system for testing a sample comprising:an outer tube;a plurality of inner tube sections; and said outer tube comprises a tapered axial internal bore;', 'said plurality of inner tube sections is cooperatively longitudinally arranged into an externally tapered inner tube structure;', 'said inner tube structure is disposed within said outer tube;', 'said outer tube comprises external threading proximate each end thereof;', 'each said closed-ended cap comprises an internal bore comprising internal threading proximate an open end of said closed-ended cap; and', 'each said closed-ended cap is sealingly attached to an end of said outer tube via engagement of said closed-ended cap internal threading and said outer tube external threading., 'two closed-ended caps; wherein2. The system of claim 1 , comprising:two outer tube elastomer seals, wherein said outer tube comprises an external circumferential groove proximate each said end thereof, and one said elastomer seal is seated in each said outer tube groove.3. The system of ...

METHOD FOR CHARACTERIZATION OF THE RATE OF MOVEMENT OF AN OXIDATION FRONT IN CEMENTITIOUS MATERIALS

Disclosed are methods for determining the redox condition of cementitious materials. The methods are leaching methods that utilize a redox active transition metal indicator that is present in the cementitious material and exhibits variable solubility depending upon the oxidation state of the indicator. When the leaching process is carried out under anaerobic conditions, the presence or absence of the indicator in the leachate can be utilized to determine the redox condition of and location of the oxidation front in the material that has been subjected to the leaching process. 1. A method for determining the location of an oxidation front in a cured cementitious material , the method comprising:obtaining a sample from a cured cementitious material, the sample being obtained at a depth from a surface of the cured cementitious material, the cementitious material including a redox active transition metal indicator that exhibits variable solubility in a solvent depending upon the oxidation state of the redox active transition metal indicator;combining the sample with de-aerated water to form a mixture, the mixture including a liquid portion that includes the de-aerated water and a solid portion;maintaining the mixture under anaerobic conditions for a period of time to form a leachate;examining the leachate following the period of time to determine the presence or quantity of the redox active transition metal indicator in the leachate, the presence or quantity of the redox active transition metal indicator in the leachate being indicative of the redox condition of the sample of the cured cementitious material and the location of the oxidation front in the cured cementitious material.2. The method according to claim 1 , wherein the redox active transition metal indicator is soluble in an oxidized state and is insoluble in a reduced state.3. The method according to claim 2 , wherein the redox active transition metal indicator is chromium.4. The method according to claim 1 , ...

METHOD FOR CHARACTERIZATION OF THE REDOX CONDITION OF CEMENTITIOUS MATERIALS

Disclosed are methods for determining the redox condition of cementitious materials. The methods are leaching methods that utilize an in situ redox indicator that is present in the cementitious materials as formed. The in situ redox indicator leaches from cementitious material and, when the leaching process is carried out under anaerobic conditions can be utilized to determine the redox condition of the material. The in situ redox indicator can exhibit distinct characteristics in the leachate depending upon the redox condition of the indicator. 1. A method for determining the redox condition of a cured cementitious material , the method comprising:combining a sample of a cementitious material with de-aerated water to form a mixture, wherein the cementitious material includes ground granulated blast furnace slag, the mixture including a liquid portion that includes the de-aerated water and a solid portion;maintaining the mixture under anaerobic conditions for a period of time to form a leachate;examining the leachate following the period of time to determine the redox condition of an in situ redox indicator of the leachate, the in situ redox indicator being an in situ compound of the cementitious material that leaches from the solid portion to the liquid portion during the period of time, the redox condition of the in situ redox indicator being indicative of the redox condition of the cured cementitious material.2. The method according to claim 1 , wherein the cementitious material includes about 20% or more by weight of the ground granulated blast furnace slag.3. The method according to claim 1 , wherein the cementitious material includes a calcium silicate cement.4. The method according to claim 3 , wherein the calcium silicate cement comprises Portland cement.5. The method according to claim 3 , wherein the cementitious material includes about 80% by weight or less of the calcium silicate cement.6. The method according to claim 1 , wherein the cementitious ...

Method for testing setting time of cement-based material

Disclosed is a method for testing the setting time of a cement-based material: testing the capillary negative pressure of a non-bleeding cement-based material, with the time at which the capillary negative pressure reaches a threshold value A as the initial setting time, and/or the time at which the capillary negative pressure reaches a threshold value B as the final setting time, wherein threshold value A is 8-10 kPa, and threshold value B is 54-56 kPa. Alternatively, threshold value A and threshold value B are determined by the following method: formulating a cement-based material for the determination of threshold values with the same raw materials at the same formulation ratio; after vibration-compaction, placing a portion into a measuring mold; after vibration-compaction, testing the capillary negative pressure of the non-bleeding cement-based material placed in the measuring mold; under the same conditions, synchronously testing and determining the initial setting time and final setting time of the cement-based material for the determination of threshold values by a penetration resistance method; the capillary negative pressure corresponding to the initial setting time and final setting time of the cement-based material for the determination of threshold values are respectively threshold value A and threshold value B. The method can not only be used in standard tests for a laboratory cement setting time under standard temperature conditions, but can also be used to realize remote, automatic, and continuous in situ monitoring for the setting time of a cast-in-situ concrete structure. 1. A method for testing a setting time of cement-based materials , comprising:testing the meniscus depression of cement-based materials without bleeding, comprising:taking the time when the meniscus depression arrives at threshold A as the initial setting time and/or the time when the meniscus depression arrives at threshold B as the final setting time, wherein threshold A=8-10 kPa ...

Method for testing self drying effect of cement-based material

Disclosed is a method for testing the self-drying effect of a cement-based material, capable of testing the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the water consumption therein and the self-drying course. In the time period after the final setting of the cement-based material until the 1 d stage of adding water and forming, the dew-point temperature inside the cement-based material is tested, and then the relative humidity inside the cement-based material is calculated using a formula. The present invention can test the change in humidity of the cement-based material after the final setting until the Id stage of adding water, so as to reflect the internal water consumption therein and the self-drying course. Further provided is a multi -stage test method for the whole course, capable of testing the whole course of continuous reduction in relative humidity from an initial 100%, in sealed conditions, starting with adding water and formation of the cement-based material, so as to provide a theoretical foundation for the quantitative calculation of the self-drying and shrinking thereof. 2. The testing method for self-desiccation effect on cement-based material of claim 1 , wherein the measuring range of the dew-point thermometer is 0-40° C. claim 1 , the precision is not less than ±0.005° C. and the sensitivity is not less than 0.001° C.3. The testing method for self-desiccation effect on cement-based material of claim 1 , wherein when the dew-point thermometer is used to calculate the internal dew-point temperature of the cement-based material claim 1 , the thermocouple probe is embedded not less than 1 cm.5. The testing method for self-desiccation effect on cement-based material of claim 1 , wherein a hygrometer is used to test the relative humidity of the hardened cement-based material after the cement-based material is shaped after addition of water for 1 d.6. The testing method ...

ANALYSIS OF CONCRETE INCLUDING A REINFORCING BAR

In one general aspect, a computer-readable storage medium can be configured to store instructions that when executed cause a processor to perform a process. The instructions comprising instructions to trigger flow of an alternating current having a waveform defining a range of frequencies from a waveform generator to a reinforcing bar embedded within concrete via a probe coupled to a surface of the concrete, and receive an indicator of a time-resolved current magnitude of the alternating current through a portion of the concrete associated with the surface of the concrete. 1. A computer-readable storage medium storing instructions that when executed cause a processor to perform a process , the instructions comprising instructions to:trigger flow of an alternating current having a waveform defining a range of frequencies from a waveform generator to a reinforcing bar embedded within concrete via a probe coupled to a surface of the concrete; andreceive an indicator of a time-resolved current magnitude of the alternating current through a portion of the concrete associated with the surface of the concrete.2. The computer-readable storage medium of claim 1 , wherein the range of frequencies includes a range of frequencies over at least two orders of magnitude claim 1 , and the alternating current has a substantially constant voltage amplitude relative to an electrical potential of the reinforcing bar.3. The computer-readable storage medium of claim 1 , wherein the reinforcing bar embedded within the concrete functions as a ground node.4. The computer-readable storage medium of claim 1 , further comprising instructions to:increase a current of the alternating current substantially at a constant voltage of the alternating current.5. The computer-readable storage medium of claim 1 , further comprising instructions to:maintain an electrical potential of a guard ring substantially at an electrical potential of the probe.6. The computer-readable storage medium of claim 1 , ...

Method of monitoring subsurface concrete structures

Fibre optic sensors are used to monitor the integrity of a subsurface concrete structure such as a pile or diaphragm wall. A fibre optic sensor array ( 48 ) is attached to a reinforcement or framework assembly ( 20 ) for the subsurface concrete structure. Concrete is applied to surround the reinforcement or framework assembly ( 20 ) and fibre optic sensor array ( 48 ). The fibre optic sensor array ( 48 ) is then used to collect temperature data during hydration of the subsurface concrete structure. The temperature data is monitored in real time to determine differentials across the structure, indicative of a problem within the structure.

APPARATUS FOR BI-DIRECTIONAL LOAD TESTING OF DRIVEN PILES AND INJECTION PILES, AND METHOD THEREOF

An apparatus for carrying out bi-directional load testing of close ended driven piles and injection piles utilizing a hydraulic jack, comprising an enclosure for housing the hydraulic jack (). The enclosure () includes a first hollow body () a second hollow body (). The first hollow body () had a covered upper end () and an open lower end (), with the upper end being capped by an attached top plate () having an external surface () which the lower end () of a first pile () may be axially attached to, and an internal surface (). The open lower end () has a cut-out () originating on the edge of the open end () of the first hollow body for receiving a hydraulic connection () for the jack (). The second hollow body () is capable of housing the hydraulic jack (), has an open upper end () and a lower end (). The lower end () is capped by an attached base plate () having an external surface () which the upper end () of a second pile () may be axially attached to, and an internal surface () for attaching the base () of the hydraulic jack, and an opening () on the capped lower end () originating at a point where the edge of the lower end () abuts the base plate () for receiving the hydraulic connection () for the jack. The first hollow body () and the second hollow body () are capable of axial movement relative to one another when actuated by the hydraulic jack. 113. An apparatus for carrying out bi-directional load testing of close ended driven piles and injection piles utilizing a hydraulic jack () comprising:{'b': 1', '13, 'claim-text': [{'b': 10', '10', '10', '11', '11', '91', '91', '11', '10', '12', '14, 'i': a', 'b', 'a', 'b', 'b', 'b, 'a first hollow body () having an upper end () and an open lower end (), the upper end being capped by an attached top plate () having an external surface () the lower end () of a first pile () may be axially attached to, and an internal surface (), the open lower end () having a cut-out () originating on the edge of the open end of the ...

Cavity-type load box

Disclosed is a cavity-type load box, comprising an oil cavity unit. The oil cavity unit comprises a sealing plate with a U-shaped section and two flat plates with edges wrapped in the sealing plate and is provided with an oil injection structure. Liquid oil injected from the oil injection structure flows into the oil cavity unit. Herein, a top flat plate refers to the uppermost flat plate. The edges of the two flat plates are wrapped in the sealing plate with the U-shaped section, so that after the liquid oil enters an oil cavity via the oil injection structure, the sealing plate is stretched under the pressure of the liquid oil to cause deformation of the oil cavity; and as a stress required for deformation of the sealing plate is very small, the pressure generated by the liquid oil directly acts on an object on the upper or lower surface of the cavity-type load box, and accordingly, the object is pushed.

SYSTEMS AND METHODS FOR ANALYZING THE CHARACTERISTICS AND COMPOSITIONS OF A DRY CEMENT

Optical analysis systems and methods that utilize integrated computational elements (“ICE”) may be useful for characterizing dry cements and determining cement slurry additives suitable for use therewith. For example, a method may include optically interacting a dry cement with an ICE configured to detect a characteristic of the dry cement; generating a plurality of output signals corresponding to the characteristic of the dry cement detected by the ICE; receiving and processing the plurality of output signals with a signal processor to yield a value for the characteristic of the dry cement; and determining at least one of a composition and a concentration of a cement slurry additive for use in combination with the dry cement based on the value of the characteristic of the dry cement. 1. A method comprising:optically interacting a dry cement with an integrated computational element (“ICE”) configured to detect a characteristic of the dry cement;generating a plurality of output signals corresponding to the characteristic of the dry cement detected by the ICE;receiving and processing the plurality of output signals with a signal processor to yield a value for the characteristic of the dry cement; anddetermining at least one of a composition and a concentration of a cement slurry additive for use in combination with the dry cement based on the value of the characteristic of the dry cement.2. The method of claim 1 , wherein the characteristic of the dry cement is a concentration of one selected from the group consisting SiO claim 1 , AlO claim 1 , FeO claim 1 , FeO claim 1 , CaO claim 1 , NaO claim 1 , KO claim 1 , MgO claim 1 , SO claim 1 , MnO claim 1 , TiO claim 1 , PO claim 1 , SnO claim 1 , SrO claim 1 , (CaO).SiO claim 1 , (CaO).SiO claim 1 , (CaO).AlO claim 1 , (CaO).AlO.FeO claim 1 , CaSO.HO claim 1 , Ca(OH) claim 1 , Al(OH)HSiO claim 1 , a sulfate salt claim 1 , a phosphate salt claim 1 , a carbonate salt claim 1 , a sodium salt claim 1 , a potassium salt claim ...

APPARATUS FOR MEASURING SHEAR BOND STRENGTH OF SET CEMENT AND METHOD OF USING SAME

An apparatus for determining shear bond strength of a cement to be set within a wellbore penetrating a subterranean formation consists of a housing, a vertical rod which extends from the uppermost portion of the housing through the lowermost portion of the housing, a base plate for positioning onto the bottom of the housing and for supporting the lowermost portion of the vertical rod, and a test plate for positioning onto the top of the housing through which the uppermost portion of the vertical rod extends. The apparatus may further contain a push rod. Shear bond strength is determined by introducing into the housing a sample core of the formation prior to introduction of a slurry containing the cement. The force required to break the bond between the vertical rod and the set cement may be used to determine the shear strength between the casing within the wellbore and the set cement when the cement is hardened within the wellbore. The force required to break the bond between the set cement and the sample core may be used to determine the shear strength between the set cement and formation core when the cement is hardened within the wellbore. 1. An apparatus for testing shear bond strength of a set cement comprising:(a) a circular housing;(b) a vertical rod of a length sufficient to extend through the uppermost portion of the housing and through the lowermost portion of the housing;(c) a solid base plate for positioning onto the bottom of the housing, the solid base plate having on its inner face a recessed area for securing the lowermost portion of the vertical rod; and(d) a test plate for positioning onto the housing having a through-hole for the vertical rod, one surface of the test plate being flat and the other surface having a recessed cavity surrounding the through-hole.2. The apparatus of claim 1 , wherein at least one of the housing claim 1 , vertical rod claim 1 , base plate claim 1 , or test plate is composed of a metal alloy.3. The apparatus of claim 1 , ...

PASSIVE DEVICE FOR VAPOR INTRUSION SAMPLING

Disclosed herein is a passive vapor intrusion measurement device including a barrier layer having first and second major sides; an absorbent stack disposed on a first portion of the surface of the barrier layer first major side, the absorbent stack including a first absorbent layer, an optional second absorbent layer; and spacer layer(s) disposed between the first and second (if present) absorbent layer and the barrier layer; and an adhesive disposed on a second portion of the surface of the barrier layer first major side and transversely surrounding the absorbent stack. The device is applied to a substrate in need of vapor intrusion sampling. A method of vapor intrusion analysis includes individually collecting the first and second (if present) absorbent layers after a test period; analyzing the amount of an analyte the absorbent layer(s); and subtracting the amount of the analyte in the second absorbent layer (if present) from the amount of the analyte in the first absorbent layer. 1. A passive vapor intrusion sampling device comprising:a barrier layer having first and second major sides; a first absorbent layer, and', 'a first spacer layer disposed between the first absorbent layer and the barrier layer; and, 'an absorbent stack disposed over a first portion of the surface of the first major side of the barrier layer, the absorbent stack comprisingan adhesive layer disposed on a second portion of the surface area of the first major side of the barrier layer and transversely surrounding the absorbent stack.2. The device of further comprising a second absorbent layer and a second spacer layer disposed between the first and second absorbent layers.3. The device of wherein the barrier layer is impermeable to an analyte selected for vapor intrusion analysis.4. The device of wherein the adhesive layer is disposed substantially over the entirety of the surface of the first major side of the barrier layer.5. The device of wherein the first portion of the surface of the ...

SYSTEM AND METHOD FOR MONITORING EARTH PRESSURE AND DISPLACEMENT OF MINIATURE STEEL PIPE PILE BODY

A system and method for monitoring an earth pressure and displacement of a miniature steel pipe pile body. Sensor installation holes are drilled at predetermined positions outside the steel pipe pile body and sensor metal protective shell with a thickness slightly lower than that of the XY-TY02A resistance-type miniature earth pressure gauge is welded on the steel pipe pile body. The XY-TY02A resistance-type miniature earth pressure gauges are stuck on the steel pipe pile body. The transmission line of the XY-TY02A resistance-type miniature earth pressure gauges passes through the sensor installation holes and are connected to data acquisition system. The reflective sheet base is welded at the preset position of the miniature steel pipe pile and the reflective sheet is attached to the reflective sheet base to realize displacement monitoring. 1. An earth pressure and displacement monitoring system of a miniature steel pipe pile body , comprisinga plurality of resistance-type miniature earth pressure gauges,a plurality of sensor metal protective shells,a resistance test strain gauge,a data storage device,a reflective sheet,a reflective sheet end support plate, anda reflective sheet base rebar end; whereina plurality of sensor installation holes are arranged on the miniature steel pipe pile body; the resistance-type miniature earth pressure gauge is embedded in the sensor installation hole; the sensor metal protective shell is arranged at a position where the resistance-type miniature earth pressure gauge will be installed, a sensor is connected to the resistance test strain gauge through a transmission line, and the resistance test strain gauge is connected to the data storage device;a top beam is installed on a top of the miniature steel pipe pile body, and waist beams are evenly distributed on an outer surface, of the miniature steel pipe pile body; the reflective sheet base rebar end is vertically welded at a position which is on the top beam and symmetrical to the ...

METHOD AND APPARATUS FOR ANALYZING ANOMALIES IN CONCRETE STRUCTURES

Embodiments relate to a method and apparatus for investigating the uniformity of concrete and/or grout. Embodiments can identify the existence of one or more anomalies in the uniformity of concrete and/or grout, and/or determine or estimate the size, shape, type, and/or location of one or more anomalies in the uniformity of concrete and/or grout. Embodiments can utilize a string of temperature measuring sensors placed within one or more access bore(s), such as tube(s), positioned at least partially within the concrete and/or positioned proximate the concrete. The measurements obtained from the temperature measuring sensors can then be used to assist in the identification of existence of, size of, type of, shape of, and/or location of anomalies in the concrete and/or grout. 1. A method for investigating the uniformity of concrete , comprising:placing one or more access bores at least partially within concrete positioned in a volume and/or proximate the concrete positioned in the volume;positioning a string within the one or more access bores, wherein the string comprises one or more temperature measuring sensors; andcollecting temperature data from the one or more temperature measuring sensors.2. The method according to claim 1 , wherein the one or more access bores comprises one or more tubes.3. The method according to claim 2 , wherein at least one of the one or more access tubes is attached to a reinforcement cage or framework placed within the concrete.4. The method according to claim 2 ,wherein at least one of the one or more access tubes is cast in place before concrete positioned in the volume.5. The method according to claim 2 ,wherein at least one of the one or more access tubes is plunged in the concrete before the concrete cures.6. The method according to claim 2 ,wherein at least one of the one or more access tubes is placed such that a corresponding at least one longitudinal axis of the at least one of the one or more access tubes is across or proximate ...

STRESS HISTORY MEASUREMENT METHOD AND STRESS SENSOR

It is an object to provide a stress history measurement method and a stress sensor by which the stress history of an object being measured can be measured easily with high accuracy over a vide stress measurement range. In the stress history measurement method, the stress history to which the object being measured has been subjected is measured on the basis of the ratio of twinned calcite particles after the object to be measured has been subjected to an external force, the object having a stress sensor embedded therein and capable of being deformed elastically when being subjected to the external, force, the sensor including a number of calcite particles. The stress sensor is configured such that a number of calcite particles are hardened by a resin with adjacent particles kept in contact with each other. 1. A stress history measurement method comprising:measuring a stress history which has been subjected to an object to be measured on the basis of a ratio of twinned calcite particles after the object being measured has been subjected to an external force, the object having a stress sensor embedded therein and capable of being deformed elastically when the object is subjected to an external force, the sensor including a number of calcite particles.2. The stress history measurement method according to claim 1 , wherein calcite particles that originally have no twin crystals are employed.3. The stress history measurement method according to claim 1 , wherein as the stress sensor claim 1 , one that has a number of calcite particles hardened by a resin is employed.4. The stress history measurement method according to claim 1 , wherein the maximum stress that has acted on the entire object to be measured is estimated on the basis of a ration of twinned calcite particles to a plurality of calcite particles having an exposed crystalline plane in a region to be inspected claim 1 , the region being at least a part of the object to be measured.5. A stress sensor comprising a ...

IMPACT ECHO DETECTION SYSTEM

An impact echo detection system including a fixed mount, an impact source, an elastic connection member, a transducer, and an acquisition and analysis device is provided. The fixed mount includes a frame and support rods. The support rods are fixed to the frame, which is passed through by the support rods. A middle portion of the elastic connection member passes through a through hole in the impact source, and is fixed to the impact source. Two ends of the elastic connection member are respectively connected to the fixators of the frame. The transducer is disposed at a periphery of the fixed mount with one end abuts against a surface of a medium to be tested and another end connects the acquisition and analysis device. The acquisition and analysis device analyzes the received impact echo data measured by the transducer to obtain analysis results. 1. An impact echo detection system , which consists of the several apparatus as follow: a fixed mount , an impact source , an elastic connector , one or more transducers , and an acquisition and analysis device;wherein the fixed mount comprises: a frame and support rods, wherein the support rods are fixed to the frame, which is passed through by the support rods; a bottom portion of the support rod abuts against a surface of a medium to be tested; a middle portion of the frame is provided with an impact source bombardment space through which the impact source and the elastic connector pass; and fixators are respectively disposed on two opposite sides of an inner wall of the frame;wherein the impact source is provided with a through hole through which the elastic connector passes;wherein a middle portion of the elastic connector is fixed to the impact source, which is passed through by the a middle portion of the elastic connector through the through hole, and two ends of the elastic connector are respectively connected to the fixators on the inner wall of the frame;wherein the transducer is disposed at a periphery of the ...

ELECTRICAL METHODS AND SYSTEMS FOR CONCRETE TESTING

Concrete can be one of the most durable building materials and structures made of concrete can have a long service life. Consumption is projected to reach approximately 40 billion tons in 2017. Despite this the testing of concrete at all stages of its life cycle is still in its early stages although testing for corrosion is well established. Further many of the tests today are time consuming, expensive, and provide results only after it has been poured and set. Embodiments of the invention provide concrete suppliers, construction companies, regulators, architects, and others with rapid testing and performance data regarding the cure, performance, corrosion of concrete at different points in its life cycle based upon a simple electrical tests that remove subjectivity, allow for rapid assessment, are integrable to the construction process, and provided full life cycle assessment. Wireless sensors can be embedded from initial loading through post-cure into service life. 1. A method comprising:performing an electrical impedance measurement upon concrete; anddetermining based upon at least the electrical impedance measurement a characteristic of the concrete;wherein the electrical impedance measurement is adjusted in dependence upon a temperature at the time of the electrical impedance measurement, the adjustment comprising an activation energy.2. The method according to claim 1 , whereinthe concrete is wet concrete; and determination of the water to cement ratio of the concrete;', 'estimation of in-situ compressive strength of the concrete after pouring;', 'prediction of at least one of 7-day, 28-day and 56-day compressive strength of the concrete;', 'detection of at least one of the initial and final setting time of the concrete; and', 'assessment of a transport properties of the concrete selected from the group comprising permeability, diffusivity and porosity., 'the characteristic of the concrete is at least one of3. The method according to claim 1 , whereinthe ...

SYSTEMS, METHODS, AND MACHINES FOR AUTOMATED SCREW ANCHOR DRIVING

In a machine for driving screw anchors and other foundation components, a desired embedment depth is calculated based on a minimum required embedment depth, work point height and length of available upper leg sections. Once calculated, the machine automatically drives the screw anchor to the depth so that one of the available upper leg lengths will fit between the driven screw anchor and apex truss hardware. If uplift is detected during driving, the machine will add additional embedment depth. In-situ validation of driven screw anchors may be performed after the embedment depth is reached. 1. An automated control system for a screw anchor driving machine comprising:a plurality of control nodes;a processor controllably coupled to the plurality of control nodes to perform an automated screw anchor driving operation;a plurality of sensor nodes; anda storage device communicatively coupled to the processor, the storage device storing program code executable by the processor to cause it to calculate an upper leg length, to calculate an actual embedment depth based on the upper length, and to drive the screw anchor substantially to the embedment depth based in part on information received from at least one of the sensor nodes during a driving operation.2. The control system according to claim 1 , wherein the storage device stores program code executable by the processor to cause it to calculate the upper length by calculating an interim leg length based on a stored minimum embedment depth for the screw anchor and a truss work point claim 1 , and increasing the interim length to a final length closest to one of a plurality of available leg lengths.3. The control system according to claim 2 , wherein the storage device stores program code executable by the processor to cause it to calculate the actual embedment depth based on at least the final length.4. The control system according to claim 3 , wherein the storage device stores program code executable by the processor to ...

Multi-Purpose Tube for Oil Well Cement Testing

Embodiments of a sample testing system of the present invention generally include two internally threaded caps; an externally threaded outer tube having a tapered internal bore and external circumferential grooves proximate each end thereof; an O-ring seated in each groove; and a plurality of inner tube sections cooperatively arranged to form an externally tapered inner tube structure that is disposed within the outer tube; wherein each cap is sealingly attached to an end of the outer tube via threading engagement therewith. Various embodiments utilize at least one closed-ended cap and/or at least one cap having a port extending through an end thereof, which may also incorporate a piston cavity and a piston having two circumferentially disposed O-rings. Embodiments allow for inner tube structure removal and separation of the inner tube sections for cured sample recovery. Embodiments of a method of using the system to cure a sample are also provided. 1. A system for testing a sample comprising:an outer tube;a plurality of inner tube sections; andtwo caps; said plurality of inner tube sections is cooperatively longitudinally arrangeable to form an inner tube structure;', 'said inner tube structure is disposable within an inner bore of said outer tube;', 'said outer tube comprises external threading proximate a first end thereof and a second end thereof;', 'each said cap comprises an internal bore comprising internal threading proximate an open first end thereof; and', 'each said cap is sealingly attachable to at least one of said first end or said second end of said outer tube via engagement of said cap internal bore threading and said outer tube external threading., 'wherein2. The system of claim 1 , comprising: said outer tube comprises an external circumferential groove proximate each end thereof; and', 'one said elastomer seal is seatable in each said outer tube groove., 'wherein, 'two outer tube elastomer seals;'}3. The system of claim 1 , wherein at least one ...

Multi-Purpose Tube for Oil Well Cement Testing

Embodiments of a sample testing system of the present invention generally include two internally threaded caps; an externally threaded outer tube having a tapered internal bore and external circumferential grooves proximate each end thereof; an O-ring seated in each groove; and a plurality of inner tube sections cooperatively arranged to form an externally tapered inner tube structure that is disposed within the outer tube; wherein each cap is sealingly attached to an end of the outer tube via threading engagement therewith. Various embodiments utilize at least one closed-ended cap and/or at least one cap having a port extending through an end thereof, which may also incorporate a piston cavity and a piston having two circumferentially disposed O-rings. Embodiments allow for inner tube structure removal and separation of the inner tube sections for cured sample recovery. Embodiments of a method of using the system to cure a sample are also provided.

Bridge Foundation Scouring Monitoring Sensor and Monitoring Data Analysis Method Thereof

The disclosure provides a bridge foundation scouring monitoring sensor and a monitoring data analysis method thereof, and belongs to the technical field of bridge engineering. The disclosure solves the problem that an existing bridge foundation scouring monitoring technology cannot realize reliable, efficient and high-precision bridge foundation scouring depth monitoring. The bridge foundation scouring monitoring sensor comprises a cover plate, a lower fixing unit and scouring depth monitoring standard units fixedly disposed between the cover plate and the lower fixing unit. Each scouring depth monitoring standard unit comprises a supporting frame and an optical fiber vibration string disposed in the supporting frame; the upper end and the lower end of each optical fiber vibration string are both fixedly connected with the corresponding supporting frame; a plurality of polyhedral mass blocks are evenly distributed on each optical fiber vibration string from top to bottom; and a fiber Bragg grating is disposed at the upper portion of each optical fiber vibration string. The bridge foundation scouring monitoring sensor of the disclosure realizes long-term real-time monitoring on the scouring depth of a bridge foundation and has higher monitoring efficiency and reliability compared with the current monitoring technology. 1123123313231323133323432. A bridge foundation scouring monitoring sensor , comprising a cover plate () , a lower fixing unit () and scouring depth monitoring standard units () fixedly disposed between the cover plate () and the lower fixing unit () , wherein each scouring depth monitoring standard unit () comprises a supporting frame () and an optical fiber vibration string () disposed in the supporting frame () , an upper end and a lower end of each optical fiber vibration string () are both fixedly connected with the corresponding supporting frame () , a plurality of polyhedral mass blocks () are evenly distributed on each optical fiber vibration ...

Device and method for testing compression amount of pile body of rock-socketed cast-in-place pile

The present disclosure provides a device and a method for testing the compression amount of a pile body of a rock-socketed cast-in-place pile. The testing device comprises open flexible pipes which are correspondingly bound with two main reinforcements in the pile body of the rock-socketed cast-in-place pile, and the lengths of the open flexible pipes are the same as those of the bound main reinforcements; one end of each of the two open flexible pipes is located at the bottom end of the corresponding main reinforcement and fixedly connected with a first sealing sheet, and the other ends of the two open flexible pipes are located at the pile block of the rock-socketed cast-in-place pile and fixedly connected with second sealing sheets; a closed rigid pipe is located in the open flexible pipe, pipe bodies of the closed rigid pipe and the open flexible pipe are not in contact. 1. A device for testing the compression amount of a pile body of a rock-socketed cast-in-place pile , comprising open flexible pipes , closed rigid pipes , first sealing sheets , second sealing sheets and displacement sensors , whereinthe open flexible pipes are correspondingly bound with two main reinforcements in the pile body of the rock-socketed cast-in-place pile, and the lengths of the open flexible pipes are the same as those of the bound main reinforcements; the length of one of the main reinforcements is the height of the rock-socketed cast-in-place pile, and the length of the other of the main reinforcements is the height of the rock-socketed cast-in-place pile minus the height of a rock stratum; one end of each of the two open flexible pipes is located at the bottom end of the corresponding main reinforcement and fixedly connected with the first sealing sheet, and the other ends of the two open flexible pipes are located at the pile block of the rock-socketed cast-in-place pile and fixedly connected with the second sealing sheets; the closed rigid pipe is located in the open flexible ...

MONITORING METHOD, MONITORING SYSTEM AND INCLINOMETER DEVICE ASSOCIATED THEREWITH

Inclinometer device (), monitoring system () and method associated therewith for monitoring bonded elements comprising a flexible tape (), at least one inclinometer () housed on or in the tape (). 11. Inclinometer device () for monitoring coupled elements , comprising{'b': '2', 'a flexible tape (),'}{'b': '3', 'at least one inclinometer (),'}{'b': 3', '2, 'wherein said at least one inclinometer () is housed on or in said tape ().'}21. The inclinometer device () according to claim 1 , comprising:{'b': 3', '2', '5', '3, 'a plurality of inclinometers (), wherein said tape () comprises a cable () that operatively connects at least two inclinometers of said plurality of inclinometers ().'}31. The inclinometer device () according to claim 1 , further comprising{'b': 11', '3', '3, 'a processing unit () that is that is operatively connected to said at least one inclinometer () in order to process the data collected by said at least one inclinometer ().'}41. The inclinometer device () according to claim 3 , wherein{'b': 11', '3', '5', '10', '2', '6, 'said processing unit () is operatively connected to said at least one inclinometer () by means of said cable () at a second end () of said tape () that is opposite a first end ().'}51. The inclinometer device () according to claim 2 , wherein{'b': 3', '2, 'said plurality of inclinometers () are spaced apart along a first longitudinal axis (X) of said tape ().'}61. The inclinometer device () according to claim 1 , wherein{'b': 3', '4, 'said at least one inclinometer () is housed inside a sealed box ().'}71. The inclinometer device () according to claim 4 , comprising{'b': 7', '6', '2, 'a weighting device () connected to said first end () of said tape ().'}81. The inclinometer device () according to wherein{'b': '3', 'said at least one inclinometer () is oriented in a direction perpendicular to said first longitudinal axis (X).'}91. The inclinometer device () according to claim 1 , further comprising{'b': 14', '3', '15', '3, 'a ...

PREDICTING THE INFLUENCE OF MINERAL ADDITIONS ON REACTION AND PROPERTY DEVELOPMENT IN CEMENTITIOUS MIXTURES

A mechanical property of a cementitious mixture is predicted by: (1) receiving user input characterizing a mixture of a cement and a mineral addition, the user input corresponding to at least one of: (a) a size characteristic of the cement; (b) a size characteristic of the mineral addition; and (c) a replacement level of the cement by the mineral addition in the mixture; (2) based on the user input, deriving a predicted cumulated heat released by the mixture through hydration for a reaction time period; and (3) based on the predicted cumulated heat released, deriving a predicted mechanical property of the mixture at an age corresponding to the reaction time period. 1. A non-transitory computer-readable storage medium , comprising executable instructions to:receive user input characterizing a mixture of a cement and a mineral addition, the user input corresponding to at least one of: (a) a size characteristic of the cement; (b) a size characteristic of the mineral addition; and (c) a replacement level of the cement by the mineral addition in the mixture;based on the user input, derive a predicted cumulated heat released by the mixture through hydration for a reaction time period; andbased on the predicted cumulated heat released, derive a predicted mechanical property of the mixture at an age corresponding to the reaction time period.2. The non-transitory computer-readable storage medium of claim 1 , wherein the executable instructions to derive the predicted cumulated heat released include executable instructions to:based on the user input, derive an area multiplier characterizing a change in solid surface area resulting from replacement of the cement by the mineral addition in the mixture.3. The non-transitory computer-readable storage medium of claim 2 , wherein the size characteristic of the cement and the size characteristic of the mineral addition correspond to a particle size distribution of the cement and a particle size distribution of the mineral addition ...

ANCHOR BOLT DIAGNOSING SYSTEM, METHOD OF THE SAME, AND PROGRAM OF THE SAME

An anchor bolt diagnosing system includes a vibration sensing clip that clips an anchor bolt, and senses a vibration power of the anchor bolt, a blow sensing hammer that gives a blow to the anchor bolt clipped by the vibration sensing clip, and senses blow strength, and a diagnoser that obtains the vibration power and the blow strength output from the vibration sensing clip and the blow sensing hammer, and diagnoses soundness of the anchor bolt in accordance with whether a ratio of the vibration power to the blow strength is higher than a predetermined value. 1. An anchor bolt diagnosing system comprising:a vibration sensing clip that clips an anchor bolt, and senses a vibration power of the anchor bolt;a blow sensing hammer that gives a blow to the anchor bolt clipped by said vibration sensing clip, and senses blow strength; anda diagnoser that obtains the vibration power and the blow strength, and diagnoses soundness of the anchor bolt in accordance with whether a ratio of the vibration power to the blow strength is higher than a predetermined value.2. The anchor bolt diagnosing system according to claim 1 , wherein said diagnoser diagnoses the soundness of the anchor bolt by using the vibration power within a predetermined time after the blow is given to the anchor bolt by said blow sensing hammer.3. The anchor bolt diagnosing system according to claim 1 , wherein said vibration sensing clip senses vibration powers in an axial direction of the anchor bolt and a direction perpendicular to the axis of the anchor bolt.4. The anchor bolt diagnosing system according to claim 1 , wherein said diagnoser diagnoses the soundness of the anchor bolt based on a lower-frequency component of the vibration power.5. The anchor bolt diagnosing system according to claim 1 , wherein said diagnoser diagnoses the soundness of the anchor bolt when the blow strength with respect to the anchor bolt is not less than a predetermined value.6. The anchor bolt diagnosing system according to ...

METHOD AND APPARATUS FOR ANALYZING ANOMALIES IN CONCRETE STRUCTURES

Embodiments relate to a method and apparatus for investigating the uniformity of concrete and/or grout. Embodiments can identify the existence of one or more anomalies in the uniformity of concrete and/or grout, and/or determine or estimate the size, shape, type, and/or location of one or more anomalies in the uniformity of concrete and/or grout. Embodiments can utilize a string of temperature measuring sensors placed within one or more access bore(s), such as tube(s), positioned at least partially within the concrete and/or positioned proximate the concrete. The measurements obtained from the temperature measuring sensors can then be used to assist in the identification of existence of, size of, type of, shape of, and/or location of anomalies in the concrete and/or grout. 1. A method for investigating the uniformity of concrete , comprising:placing one or more access bores at least partially within concrete positioned in a volume and/or proximate the concrete positioned in the volume;positioning a string within the one or more access bores, wherein the string comprises one or more temperature measuring sensors; andcollecting temperature data from the one or more temperature measuring sensors.2. The method according to claim 1 , wherein the one or more access bores comprises one or more tubes.3. The method according to claim 2 , wherein at least one of the one or more access tubes is attached to a reinforcement cage or framework placed within the concrete.4. The method according to claim 2 ,wherein at least one of the one or more access tubes is cast in place before concrete positioned in the volume.5. The method according to claim 2 ,wherein at least one of the one or more access tubes is plunged in the concrete before the concrete cures.6. The method according to claim 2 ,wherein at least one of the one or more access tubes is placed such that a corresponding at least one longitudinal axis of the at least one of the one or more access tubes is across or proximate ...

METHOD FOR EVALUATING SEMI-QUANTITATIVELY OF CONCRETE CARBONIZATION AND EVALUATING APPARATUS USING THE SAME

Provided are a method of semi-quantitatively evaluating concrete carbonation including the steps of a specimen preparing step of preparing a concrete specimen for identifying a degree of carbonation, a carbonation depth measuring step of measuring a carbonation depth of the specimen by a method of promoting carbonation of the specimen using a carbonation promoting tester and applying an indicator, an X-ray diffraction (XRD) analyzing step of qualitatively analyzing components of the specimen by an XRD method after cutting the specimen from a top end to a predetermined depth and crushing the specimen. Thus, the method of the present invention may calculate the exposure time of concrete carbonation by converting the analysis result value of XRD to the result value of TG-DTA. 1. A method of semi-quantitatively evaluating concrete carbonation , the method comprising steps of:a specimen preparing step of preparing a concrete specimen for identifying a degree of carbonation;a carbonation depth measuring step of measuring a carbonation depth of the specimen by a method of promoting carbonation of the specimen using a carbonation promoting tester and applying an indicator;an X-ray diffraction (XRD) analyzing step of qualitatively analyzing components of the specimen by an XRD method after cutting the specimen from a top end to a predetermined depth and crushing the specimen;an a step of converting a first result value A analyzed in the X-ray diffraction analyzing step to a second result value B of a differential thermal gravimetric analysis (TG-DTA) method to quantitatively analyze the components of the specimen; anda b step of calculating exposure time of carbonation C of the specimen based on the converted second result value B.2. The method of claim 1 , wherein the plurality of specimens are prepared in a water-binder ratio range of 0.4 to 0.5 in the specimen preparing step.3. The method of claim 1 , further comprising a specimen curing step of water curing the specimen ...

METHOD FOR REAL-TIME ON-LINE MONITORING OF CONCRETE FREEZE-THAW DAMAGE

Method for real-time and online monitoring the freeze-thaw damage of concrete, firstly, embed pairs of gradient electrical resistance probes into surface of the monitoring concrete at the depth of 0˜50 mm, the paired gradient electrical resistance probes adopt anti-corrosion metal bar, and the buried depth gradient of different pairs of electrical resistance probes in the range of 1 mm to 20 mm, and the buried depth gradient of the pair of electrical resistance probes nearest to the surface is less than 5 mm. Transmit the impedance value of the concrete measured by the paired gradient electrical resistance probes to the monitor center for processing. Judge the spalling status of freeze-thaw damage of concrete though the abrupt change in impedance value. Real-time online monitoring of the freeze-thaw damage of concrete can be achieved by the electrical resistance probes and monitoring center of this invention. 1Step One, embed pairs of gradient electrical resistance probes into surface of the monitoring concrete at the depth of 0˜50 mm, the paired gradient electrical resistance probes adopt anti-corrosion metal bar, and the buried depth gradient of different pairs of electrical resistance probes in the range of 1 mm to 20 mm, and the buried depth gradient of the pair of electrical resistance probes nearest to the surface is less than 5 mm;Step Two, transmit the impedance value of the concrete measured by the paired gradient electrical resistance probes to the monitor center for processing;Step Three, judge the spalling status of freeze-thaw damage of concrete though the abrupt change in impedance value, there are three conditions:a. On the curve of Impedance-Time, the impedance value changes from relatively stable to infinite, at the moment the concrete suffers spalling and there is no free water seeped into the concrete;b. On the curve of Impedance-Time, the impedance value changes from relatively stable to almost zero, at the moment the concrete suffers spalling ...

Device and method for monitoring freezing-thawing damage of underwater concrete member in situ

A device and method for monitoring freezing-thawing damage of an underwater concrete member in situ. A main structure includes an upper link, concrete member, transverse sealed box, longitudinal sealed box, movable guide rod, probe launching box, multichannel data collector, frequency modulation transmitter, computer, auxiliary wheels, lower link, and a wireless temperature sensor. A process includes four steps: launching of a probe, collection of data, calculation of an elastic modulus, and evaluation of freezing-thawing damage. The device is simply structured, easy to operate, and can be reused, and provides power for launching the probe by non-contact force transmission by using high-strength magnets of the same pole, resolving the sealing problem, and calculates the elastic modulus of the concrete member by using acceleration data obtained by a probe, so as to obtain a loss amount of the elastic modulus, thereby performing real-time in-situ monitoring for freezing-thawing damage of an underwater concrete member.

MEASURING DEVICE AND METHOD FOR HORIZONTAL DYNAMIC IMPEDANCE OF SPECIFIED FOUNDATION DEPTH BASED ON DIFFERENTIAL RESPONSE ANALYSIS OF PULSE EXCITATION

A measuring device and method for horizontal dynamic impedance of specified foundation depth based on differential response analysis of pulse excitation. The measuring method is realized based on the measuring device. Two rigid piles with different lengths are embedded into different foundation depths. Motion characteristics of the two rigid piles in the process of collision impact with the outside are different under the same pulse excitation. Dynamic impedance of specified foundation depth is deduced from the formula according to the differential response. Single-degree-of-freedom oscillators are arranged on the pile heads of the two piles, and strain gauges are arranged on the bottoms of the single-degree-of-freedom oscillators to obtain stress states of the single-degree-of-freedom oscillators, thereby calculating the relative displacements of the single-degree-of-freedom oscillators. This is simple in structure, reliable in measurement and convenient in data collection and processing. 1123456789. A measuring device for horizontal dynamic impedance of specified foundation depth based on differential response analysis of pulse excitation , the measuring device comprising a bracket () , a bidirectional electromagnetic exciter () , single-degree-of-freedom oscillators () , strain gauges () , a raft () , two rigid piles () , a photosensitive band () , laser sources () and an information collector () , wherein{'b': 6', '3', '6', '3', '3', '4', '3', '3', '8', '3', '7', '6', '9', '7, 'the two rigid piles () with different lengths are embedded into different foundation depths; the single-degree-of-freedom oscillators () with different frequencies are arranged on pile heads of the two rigid piles () according to the frequency of an actual structure, and the natural vibration frequencies of the single-degree-of-freedom oscillators () are regulated by regulating the heights and the mass of the single-degree-of-freedom oscillators (); the strain gauges () are vertically ...

CONCRETE STRUCTURE MOISTURE MEASUREMENT SYSTEM

A sensor assembly is provided for measuring moisture content of concrete. The sensor assembly includes a sensor housing that is received within an opening in the concrete. The sensor housing includes an internal bore. The sensor housing is length adjustable so as to match a length of the opening. The sensor assembly further includes a moisture sensor received within the internal bore of the sensor housing. The sensor measure the moisture content of the concrete. 1. A sensor assembly for measuring moisture content of concrete , the sensor assembly including:a sensor housing configured to be received within an opening in concrete, the sensor housing including an internal bore, the sensor housing being length adjustable so as to match a length of the opening; anda moisture sensor received within the internal bore of the sensor housing, the sensor being configured to measure a moisture content of the concrete.2. The sensor assembly of claim 1 , wherein the sensor housing includes a first housing portion and a second housing portion.3. The sensor assembly of claim 2 , wherein the first housing portion includes a male threading extending at least partially along an outer surface of the first housing portion.4. The sensor assembly of claim 3 , wherein the second housing portion includes a female threading extending at least partially along an inner surface of the second housing portion.5. The sensor assembly of claim 4 , wherein the male threading of the first housing portion engages the female threading of the second housing portion such that rotation of the first housing portion and the second housing portion with respect to each other adjusts a length of the sensor housing.6. The sensor assembly of claim 1 , wherein the sensor housing includes an opening disposed at an end of the sensor housing claim 1 , the opening being in communication with the internal bore so as to receive the sensor therethrough.7. The sensor assembly of claim 1 , further including an engagement ...

DEVICE AND METHOD FOR TAKING A SAMPLE

The invention relates to a device and a method for taking a sample of a filling, with which a hole in the ground is filled, having a container with at least one inlet opening for the inflow of the filling into a receiving space of the container. According to the invention provision is made in that a closing cap is placed onto the inlet opening and this is closed thereby. The container is provided with a compressed air line which leads into the receiving space, wherein on feeding compressed air into the receiving space the closing cap is released from the inlet opening and this is exposed for the inflow of the filling. 1. Device for taking a sample of a filling , with which a hole in the ground is filled , having a container with at least one inlet opening for the inflow of the filling into a receiving space of the container , a closing cap is placed onto the inlet opening and this is closed thereby and', 'the container is provided with a compressed air line which leads into the receiving space, wherein on feeding compressed air into the receiving space the closing cap is released from the inlet opening and this is exposed for the inflow of the filling., 'wherein'}2. Device according to claim 1 ,whereinthe closing cap is designed as a lost closing cap.3. Device according to claim 1 ,whereinthe container is designed as a tubular body which has a connecting means on an upper end section for attachment of the compressed air line.4. Device according to claim 1 ,whereinthe compressed air line has a high-pressure injection rod with a thread on a lower end andthe container is screwed onto the thread.5. Device according to claim 1 ,whereinon a lower end section of the container a tip is arranged.6. Device according to claim 5 ,characterized in thaton the tip a further opening is provided which is closed by a discharge plug.7. Device according to claim 1 ,whereinon a lower end section of the container a discharge valve is arranged, with which a filling taken as a sample can ...

Systems And Methods For Determining A Natural Frequency Of A Structure

In one embodiment, a system and method for determining a natural frequency of a structure involve modeling the structure, creating a synthesized excitation comprising a plurality of waves having various frequencies within a defined range of frequencies, applying the synthesized excitation to a base of the modeled structure, and generating response data indicative of a natural frequency of the modeled structure that is based upon the application of the synthesized excitation. 1. A method for determining a natural frequency of a structure , the method comprising:modeling the structure;creating a synthesized excitation comprising a plurality of waves having various frequencies within a defined range of frequencies;applying the synthesized excitation to a base of the modeled structure; andgenerating response data indicative of a natural frequency of the modeled structure that is based upon the application of the synthesized excitation.2. The method of claim 1 , wherein the structure comprises an earthen structure.3. The method of claim 1 , wherein modeling the structure comprises computer modeling the structure.4. The method of claim 1 , wherein computer modeling the structure further comprises selecting and inputting a plurality of parameters that define the nature of the structure.5. The method of claim 4 , wherein the plurality of parameters include each of a zone parameter claim 4 , a material property claim 4 , a boundary parameter claim 4 , and a geometry parameter.6. The method of claim 1 , wherein creating a synthesized excitation comprises creating a synthesized sum of sines excitation that comprises all possible sinusoidal waves within the defined range of frequencies.8. The method of claim 7 , wherein creating a synthesized excitation further comprises selecting parameter for each of PHA claim 7 , F claim 7 , f claim 7 , t claim 7 , and T.9. The method of claim 1 , further comprising applying multiple synthesized excitations having different PHA values to the ...

SYSTEM AND METHOD FOR LABELING AND MONITORING CEMENTITIOUS COMPOSITES

This system includes a concrete identification technology that is used in taking, testing, monitoring, and labeling concrete samples or members using custom labels called a tag. This tag comprises a series of corresponding labels, one for the outside of the form, and on for the inside of the form that becomes part of the concrete sample. These tags are physically bonded to the concrete specimen with only minimal impact on its shape and properties. In some embodiments the tags will contain a hook-and-loop or fiber type surface texture (protrusions) which is placed in the form with the protrusions facing the fresh concrete. The tag can also contain electronic circuitry to gather and track information about the concrete and the surrounding environment. This will eliminate the need to relabel the samples after demolding while also measuring a number of other parameters about the concrete and its performance. 1. A tag for use on a concrete member or sample hardened within a concrete form , said tag having a first side and second side ,wherein said first side of said tag has a plurality of protrusions suitable for embedding in a surface of fresh concrete placed in a form such that said tag becomes bonded to said fresh concrete after it hardens into the concrete member or sample, andwherein said second side of said tag has an adhesive thereon that removably attaches said tag to the form and detaches when the concrete member or sample is demolded, andsaid second side of said tag further comprising a descriptive label thereon that becomes visible after the concrete member or sample has been demolded.2. The tag for use on a concrete member or sample according to further comprising an RFID chip incorporated into said tag.3. The tag for use on a concrete member or sample according to further comprising a bar code affixed to an outside of the concrete form containing the concrete member or sample.4. The tag for use on a concrete member or sample according to further comprising ...

REINFORCEMENT BLOCK CONSTRUCTION PROCESS AND PILES PROLONGATION FOR DYNAMIC PILE TESTS, METALLIC MOLD AND REINFORCEMENT BLOCK

A reinforcement block construction process and piles prolongation for dynamic pile tests, metallic mold and reinforcement block, which refers to a reinforcement block construction process and piles prolongation for performing dynamic pile tests, implemented by the use of a laminar metallic structure appropriately constructed, in which are provided holes for inserting the anchor bolts, and later on the electronic sensors is provided. 1. A reinforcement block construction process and piles prolongation for dynamic pile tests , comprising the following steps:i) providing two bodies and positioning a metal frame inside of the two bodies;ii) setting up a shape of the reinforcement block by joining the two bodies to each other and fixing a resulting metallic mold to the ground, keeping its alignment with the use of rods, already with a metal frame disposed internally inside the metal frame;iii) pre-fixing anchor bolts in holes located in each of the two bodies;iv) wherein the inside of the resulting metal frame is filled with concrete;v) waiting for the adequate cure of the concrete so that it reaches a defined resistance, so that the block can withstand the tensions imposed by the hammer strokes and has the ability to transmit these tensions to a top of the pile without damaging it;vi) unmolding of the metallic mold, separating the two bodies; andvii) anchoring sensors to the anchor bolts.2. A metallic mold , comprising a tubular and laminar metallic mold , which comprises two bodies of half-round formats and of an appropriate thickness.3. The metallic mold according to claim 2 , wherein said bodies comprise claim 2 , at their distal ends claim 2 , two tangential prolongations appropriately distributed along said edges claim 2 , each of the prolongations provided with a through hole.4. The metallic mold according to claim 2 , wherein said bodies are further provided with external longitudinal structural reinforcements.5. The metallic mold according to claim 2 , wherein ...

VERTICAL DISPLACEMENT DETECTING DEVICE

The disclosure relates to a vertical displacement detecting device, comprising a fixed frame, a first guiding rail and a second guiding rail. The first guiding rail and the second guiding rail are respectively provided with a first sliding block and a second sliding block. The top or bottom surface of the blocking plate is contacted with a displacement detector. The second sliding block is provided with a traction wire. A top end of the fixed frame is provided with a pulley and a traction wire, and the traction wire is wound around the pulley, one end of the traction wire is connected with the first sliding block and the other end is connected to the second sliding block. The disclosure has the advantages of simple structure, accurate precision, low cost and simple realization method, and it is advantageous for wide use. 1111512312345. A vertical displacement detecting device , comprising a displacement detector () supported by an external supporting frame () , a fixed frame () , a first guiding rail () and a second guiding rail () provided on both sides of the fixed frame () respectively; the first guiding rail () and the second guiding rail () are provided with a first sliding block () and a second sliding block () respectively;{'b': 4', '6', '5', '7', '7', '11', '11', '7', '5', '8', '4', '6', '5', '7', '1', '9', '10', '9', '10', '9', '10', '4', '5, 'wherein the sliding block () is provided with a pulling part (), the second sliding block () is provided with a blocking plate (), the top or bottom surface of the blocking plate () is contacted with a displacement detector (), the displacement detector () is used to measure a displacement of the blocking plate (); the second sliding block () is provided with a displacement wire (), and the weight of the first sliding block () and the pulling part () is greater than the weight of the second sliding block () and the blocking plate (); the top end of the fixed frame () is provided with pulleys () and a traction wire () ...

GROUT SPECIMEN CAPPING SYSTEM

A grout capping system is disclosed for capping a grout specimen in the form of a rectangular prism. The system comprises an alignment fixture having a base, an alignment plate and a spacer securing the alignment plate to the base. The alignment plate is vertically spaced from the base and has a notch forming a right angle inside corner adapted to receive a corner of a grout specimen. A capping plate comprises a body having a square recess of a size to receive the grout specimen. The capping plate is receivable on the base with a corner of the recess aligned with the alignment plate notch so that a grout specimen received in the recess maintains perpendicularity with the capping plate. 1. A grout capping system for capping a grout specimen in the form of a rectangular prism , comprising:an alignment fixture having a base, an alignment plate and a spacer securing the alignment plate to the base, the alignment plate being vertically spaced from the base, the alignment plate having a notch forming a right angle inside corner adapted to receive a corner of a grout specimen, in use; anda capping plate comprising a body having a square recess of a size to receive the grout specimen, the capping plate being receivable on the base with a corner of the recess aligned with the alignment plate notch so that a grout specimen received in the recess maintains perpendicularity with the capping plate.2. The grout capping system of wherein the square recess is beveled around its periphery.3. The grout capping system of wherein a bottom wall of the square recess has sides of about 3.5 to 3.625 inches.4. The grout capping system of wherein the capping plate is of steel.5. The grout capping system of wherein the capping plate is about 1 inch thick.6. The grout capping system of wherein the alignment fixture is of steel construction.7. The grout capping system of wherein the spacer comprises an L shaped bracket.8. The grout capping system of wherein the alignment fixture comprises a ...

Apparatus for applying horizontal load to underwater pile using ground penetration of suction pile and method for measuring horizontal resistance of underwater pile using the same

A horizontal resistance of an underwater pile is measured using a horizontal load applying apparatus which applies a horizontal load to the underwater pile to measure a horizontal resistance of the underwater pile by changing a direction of a penetration force generated when a suction pile penetrates an underwater ground.

FLOATING WIRELESS MEASURING DEVICE

A floating wireless measuring device and system for a fluid concrete is used to measure a property of the fluid concrete inside a drum of a mixer truck and transmit data from the measurement. 1. A floating wireless measuring device for a fluid concrete , comprising:a shell;at least one sensor inside the shell for measuring a property of a fluid concrete;a transmitter connected to the sensor for transmitting data from the sensor; anda power source inside the shell and connected to the sensor and the transmitter,the device having a weight less than a buoyancy of the device such that the device floats at the surface of the fluid concrete.2. The device of claim 1 , wherein the shell is spherical.3. The device of claim 1 , wherein the shell has a diameter between about 1 cm and 10 cm.4. The device of claim 1 , wherein the shell is made of a metal or plastic.5. The device of claim 1 , wherein the sensor comprises at least one of a temperature sensor claim 1 , an accelerometer claim 1 , a pH sensor claim 1 , an inductance sensor claim 1 , an impedance or resistivity sensor claim 1 , a sonic sensor claim 1 , a pressure sensor claim 1 , or an elevation sensor.6. The device of claim 1 , further comprising a Global Positioning System unit.7. The device of claim 1 , further comprising a passive or active radio frequency identification tag inside the shell.8. The device of claim 1 , further comprising a date and time recorder inside the shell.9. The device of claim 1 , further comprising a data storage component inside the shell.10. The device of claim 1 , wherein the shell comprises a layer of a form plastic.11. The device of claim 1 , wherein an upper half of the device is lighter than a lower half of the device.12. The device of claim 11 , wherein the transmitter is placed in the upper half of the device and the sensor is placed in the lower half of the device.13. The device of claim 1 , wherein:the shell has a spherical shape and comprises a first hemisphere and a second ...

Expanded Tip Pile

Methods are provided for introducing unhardened highly expansive grout into the bottom of a formed shaft in the earth and subsequently forming the pile above the grout. The expansion of the hardening grout, after the curing of the pile, generates expansion stress on the surrounding soil and upwardly directed force to the pile. Methods of pile load capacity testing use expansive grout to generate a test load. 1. Methods of forming a pile in the earth comprising:forming a vertical shaft in the earth;introducing a volume of highly expansive grout (HEG) into the shaft;introducing unhardened concrete into the shaft to form a pile above and connected to the volume of HEG;delaying the hardening of the HEG until the concrete is hardened;such that expansion of the HEG during hardening generates a uplifting stress on the pile.2. A method claim 1 , according to claim 1 , and wherein:the step of delaying the hardening of the HEG comprises delaying the hardening of the HEG by a period in the range of one to two days.3. A method claim 1 , according to claim 1 , and wherein:the step of delaying the hardening of the HEG comprises introducing a chemical agent to the unhardened HEG.4. A method claim 1 , according to claim 1 , and further comprising:introducing HEG into a carrier to form an assembly; and wherein, 'placing the carrier into the shaft.', 'the step of introducing a volume of HEG into the shaft comprises5. A method claim 4 , according to claim 4 , and further comprising:combining multiple layers of fabric to form the carrier.6. A method claim 5 , according to claim 5 , and wherein:the fabric comprises glass fibers.7. A method claim 4 , according to claim 4 , and wherein:the assembly comprises fifty percent HEG.8. A method claim 1 , according to claim 1 , and further comprising:obtaining stress data between the HEG and the concrete, and deflection data defining movements of the pile; anddetermining a pile load capacity. Concrete piles within the ground that are intended for ...

Transparent frozen soil and preparation method and application thereof

The present invention discloses a transparent frozen soil, which is prepared from a fluorine-containing polymer, cube ice and a colorless pore fluid by steps of preparing materials, blending, vacuuming, and freezing. The fluorine-containing polymer is Teflon AF 1600 produced by American DuPont Company, with the refractive index of 1.31, and are particles with the particle diameter of 0.25-2.0 mm, and the density of 2.1-2.3 g/cm 3 . The present invention also provides the application of the above transparent frozen soil in the frozen soil directional blasting model test and the frozen soil road embankment model thaw-slumping test. The transparent frozen soil prepared by the present invention can well simulate the properties of natural transparent frozen sandy soil, is effectively used in model tests in the geotechnical engineering, with accurate measurement results, and can realize the visualization of the internal deformation of the soil body, and it is low in the expense, and simple in the operation.

SYSTEMS, APPARATUS AND METHODS FOR OBTAINING MEASUREMENTS CONCERNING THE STRENGTH AND PERFORMANCE OF CONCRETE MIXTURES

A smart cap system includes a cap adapted to fit on a concrete test cylinder, the cap including one or more internal surfaces, and one or more sensors disposed in or on the one or more internal surfaces of the cap, the one or more sensors being adapted to obtain a measurement of a characteristic of a concrete mixture disposed in the test cylinder. The cap may be adapted to fit on one of a 4×8-inch cylinder and a 6×12-inch cylinder. The one or more sensors may include one of a temperature sensor, a humidity sensor, a chronometer, a heat flow sensor, a motion sensor, a pH sensor, a location detector, a GPS sensor, an accelerometer, a triangulation sensor, a thermoelectric heat flow sensor, a salinity sensor, a macro fiber composite (MFC) sensor, and a capillary sensor. 1. A smart cap system comprising:a cap adapted to fit on a concrete test cylinder, the cap comprising one or more internal surfaces; andone or more sensors disposed on the one or more internal surfaces of the cap, the one or more sensors being adapted to obtain measurement data.2. The smart cap system of claim 1 , wherein the cap includes a double-walled structure having first and second walls and a volume between the first and second walls claim 1 , wherein the volume holds one of air and a selected insulating material.3. The smart cap system of claim 1 , wherein the one or more sensors are adapted to obtain a measurement of a characteristic of a concrete mixture disposed in the test cylinder.4. The smart cap system of claim 3 , wherein the cap is adapted to fit on one of a 4×8-inch cylinder claim 3 , a 6×12-inch cylinder claim 3 , a 150 mm cube claim 3 , and a 200 mm cube.5. The smart cap system of claim 3 , wherein the one or more sensors comprise one of a temperature sensor claim 3 , a humidity sensor claim 3 , a chronometer claim 3 , a heat flow sensor claim 3 , a motion sensor claim 3 , a pH sensor claim 3 , a location detector claim 3 , a GPS sensor claim 3 , an accelerometer claim 3 , a ...

Evaluating Cement Integrity In A Wellbore With Multiple Casing Strings

A system and method for evaluating integrity of cement in a wellbore with multiple casing strings. The system and method may include at least one source that can emit a field of photons, and at least one photon detector spaced away from the source by a first distance that configures the tool to measure cement integrity in a first annulus, by a portion of the source photons being scattered back to the first detector which can produce photon count rates based on energy levels of received photons. Integrity of cement in the first annulus can be determined by the photon count rates. A second detector spaced a second distance from the source can be included and can measure cement integrity in a second annulus that is radially outside the first annulus by producing photon count rates for photons received from the second annulus. 1. A logging tool for evaluating an integrity of cement in a wellbore with multiple casing strings , the tool comprising:a first body; and at least a first collimated photon source that produces a field of photons emitted from the first source, and', 'at least a first non-azimuthally collimated photon detector spaced away from the first source by a first distance that sets a first radial depth of investigation (DOI) of the first detector, with photon count rates produced by the first detector that are based on energy levels of scattered photons received by the first detector from materials surrounding the wellbore., 'a first detector/source set contained in the first body, the first set comprising2. The tool of claim 1 , wherein increasing the first distance increases the first radial DOI and decreasing the first distance decreases the first radial DOI claim 1 , and wherein the field of photons emitted from the first source is one of a substantially cone-shaped field and a panoramic field.3. (canceled)4. The tool of claim 1 , wherein the first detector photon count rates indicate a reduced integrity of cement in a first annulus claim 1 , and ...

FOUNDATION ENGINEERING APPARATUS AND FOUNDATION ENGINEERING METHOD

The invention relates to a civil engineering device and a civil engineering method for using a civil engineering device. The device has a support device, a ground preparation tool, which prepares the ground at a preparation location, and at least one GPS unit, which is arranged on the support device and is designed to determine the position of the preparation location, wherein the GPS unit is arranged at a distance from the ground preparation location. The civil engineering device is characterised in that a measuring device is provided in addition to the GPS unit, the measuring device being designed to determine the distance between the GPS unit and the preparation tool. 2. The foundation engineering apparatus according to claim 1 ,whereinthe measuring means is spaced from the GPS-unit.3. The foundation engineering apparatus according to claim 1 ,whereinthe GPS-unit is provided on an upper carriage of the foundation engineering apparatus.4. The foundation engineering apparatus according to claim 1 ,whereinthe measuring means is designed as a contact-free operating measuring means.5. The foundation engineering apparatus according to claim 1 ,whereinthe measuring means has a laser, in particular a fan laser.6. The foundation engineering apparatus according to claim 1 ,whereinthe foundation engineering apparatus is designed as a drilling apparatus.7. The foundation engineering apparatus according to claim 1 ,whereinthe foundation engineering apparatus is designed as a diaphragm wall cutter.8. The foundation engineering apparatus according to claim 1 ,whereinthe foundation engineering apparatus is designed as a vibrator or a pile driver.10. The foundation engineering method according to claim 9 ,whereinthe distance is determined contact-free by means of the measuring means.11. The foundation engineering method according to claim 9 ,whereinthe distance is determined using at least one laser, in particular a fan laser, as a measuring means.12. The foundation engineering ...

DEVICE FOR VERIFYING THE BEARING CAPACITY OF A PILE OF AN OFFSHORE FOUNDATION CONSTRUCTION

This device () for verifying the bearing capacity of a first pile () of an offshore foundation construction comprises a body (), a first means for connecting the body () to a referential element, a second means for connecting the body () to the first pile (), a means for applying () a load on the first pile () in a direction parallel to the axis of the first pile (). It further includes a means for measuring a displacement of the first pile (). 1. A device for verifying the installation of a first pile of an offshore foundation construction , comprising:a body;a first means for connecting the body to a referential element;a second means for connecting the body to the first pile; anda means for applying a load on the first pile in a direction parallel to the axis of the first pile,wherein it further includes a means for measuring a displacement of the first pile.2. The device according to claim 1 , wherein the device is suitable for verifying the bearing capacity of the first pile.3. The device according to claim 1 , wherein the first means for connecting includes a contact surface intended to rest against a frontal surface of the referential element.4. The device according to claim 1 , wherein the second means for connecting includes a contact surface intended to rest against a frontal surface of the first pile.5. The device according to claim 1 , wherein the first means for connecting is intended to fasten the body to a structure or to an adapter of the offshore foundation construction.6. The device according to claim 1 , wherein the first means for connecting is configured to connect the body to a second pile of the offshore foundation construction.7. The device according to claim 6 , wherein the first means for connecting and the second means for connecting are substantially identical.8. The device according to claim 1 , wherein the first means for connecting includes a first means for securing a second pile of the offshore foundation construction to the body.9. ...

Impact generating equipment for dynamic loading tests

A new impact generating equipment for dynamic loading tests, designed to be adjustable to various sizes of structures and formats, particularly for piles of construction sites, so that the dynamic loading tests can be performed more easily, more efficiently and with faster speed, leading to results with minimum error margins in less time, and with a constructiveness that facilitates its transport and handling, generating logistic gains and reducing costs in the execution of tests.

STRAIN METHOD

Disclosed herein is a concrete material comprising between 0.5% and 10% ferromagnetic fibres. Also disclosed herein is a method for measuring the strain state of a concrete material, the method comprising forming solid concrete containing between 0.5% and 10% ferromagnetic fibres in a random distribution throughout the concrete, applying an oscillating EM current to the concrete, and detecting the associated EM fields within the concrete. Also disclosed herein is the use of an oscillating EM current field to measure the strain state within a concrete material comprising between 0.5% and 10% ferromagnetic fibres. 1: A concrete material comprising between 0.5% and 10% ferromagnetic fibres.2: The concrete material according to claim 1 , wherein the ferromagnetic fibres are stainless steel.3: The concrete material according to claim 1 , wherein the ferromagnetic fibres are 20 to 50 mm long.4: The concrete material according to claim 1 , wherein the fibres have a width of up to 4 mm.5: The concrete material according to claim 1 , wherein the concrete comprises an aggregate content with a maximum size of 20 mm.6: A use of a magnetic field to measure the effect of mechanical strain on ferromagnetic fibres contained within a concrete material claim 1 , wherein the fibres are included within the concrete in a random distribution and at a concentration of between 0.5% and 10%.7: The use according to claim 6 , wherein the ferromagnetic fibres are stainless steel.8: The use according to claim 6 , wherein the ferromagnetic fibres are 20 to 50 mm long.9: The use according to claim 6 , wherein the concrete comprises an aggregate content with a maximum size of 20 mm.10: The use according claim 6 , wherein the fibres have a width of up to 4 mm.11: A method for measuring strain within a concrete material claim 6 , the method comprising:a) forming solid concrete containing between 0.5% and 10% ferromagnetic fibres in a random distribution throughout the concrete;b) applying a magnetic ...

SENSING DEVICE, AND SYSTEMS AND METHODS FOR OBTAINING DATA RELATING TO CONCRETE MIXTURES AND CONCRETE STRUCTURES

A system includes at least one sensing device located within a structure being built as part of a construction project. The sensing device obtains measurements relating to a first characteristic of concrete of the structure and transmits the data wirelessly. The system also includes a memory, and a processor adapted to receive the data from the sensing devices, determine a second characteristic of the concrete based on the data, and generate a schedule of activities based on the second characteristic. The schedule may be a project schedule specifying tasks associated with the construction project. The processor is also adapted to cause at least one activity to be performed based on the schedule of activities. 1. A method comprising: a shell surrounding and defining a volume inside the sensing device; and', 'a plate disposed in the volume, the plate comprising at least one sensor adapted to obtain measurements relating to one or more first characteristics of concrete within a respective first concrete structure and transmit data relating to the measurements wirelessly;, 'inserting a plurality of sensing devices into a plurality of different first concrete structures that form a second structure associated with a construction project, wherein each sensing device comprises receiving first data relating to a selected characteristic among the one or more first characteristics of the concrete within the respective first concrete structure from at least one of the plurality of sensing devices; and', 'determining a first prediction of the strength of the respective first concrete structure based on the first data;, 'for each of the plurality of different first concrete structures, performing a plurality of steps includingdetermining a second prediction of a measure of the strength for a particular structure selected from among the plurality of different first concrete structures and the second structure, based on a plurality of first predictions determined for the plurality ...

DROP HAMMER HEIGHT ADJUSTING DEVICE FOR HIGH STRAIN DETECTION OF PILE FOUNDATION

The invention provides a drop hammer height adjusting device for high strain detection of a pile foundation, the device comprises: a cross beam support frame, an avoiding hole is opened in the middle of the surface of the cross beam support; a track extending through the avoiding hole, a tooth group is arranged on each of two surfaces of the track bar, and abutting sliding blocks are further arranged at two sides of the track bar. The abutting sliding block is cooperated with the tooth group to limit the position of the track bar. The invention overcomes the significant disadvantages of the existing detection devices, the efficiency of obtaining qualified test signals is improved by the rapid and accurate height adjustment and test, and the precision and efficiency of high strain detection of a foundation pile are greatly improved. 1. A drop hammer height adjusting device for high strain detection of a pile foundation , comprising:a cross beam support frame, an avoiding hole being opened in the middle of the cross beam support;a track extending through the avoiding hole, a tooth group being arranged on each of two surfaces of the track bar, and an abutting sliding block being further provided at each side of the track ;wherein the abutting sliding block is cooperated with the tooth group to limit the position of the track bar.2. The drop hammer height adjusting device for high strain detection of a pile foundation as claimed in claim 1 , wherein the tooth groups are arranged symmetrically on the two surfaces of the track bar.3. The drop hammer height adjusting device for high strain detection of a pile foundation as claimed in claim 1 , wherein one end of the abutting sliding block is provided at a side of the track bar claim 1 , the other end of the abutting sliding block is connected with a telescopic shaft claim 1 , the telescopic shaft extending through a fixed baffle claim 1 , a spring being sleeved on the telescopic shaft between the fixed baffle and the ...

Data Capture Device and System

A data capture device and a data capture system are provided. The data capture device is configured to navigate along an elongate structure. The data capture device includes a surface scanner, for scanning a surface of the elongate structure; and a sensor, for capturing data relating to the elongate structure. The surface scanner and the sensor are configured to capture data relating to a common region.

HIGH STRAIN DYNAMIC LOAD TESTING PROCEDURE

A method is provided for using low-overhead equipment to perform a dynamic load test on pipe piles of a deep pile foundation for an existing building. The existing building is lifted to a predetermined elevation above grade and cribbing stacks are positioned to support the existing building at the predetermined elevation above grade. The cribbing stacks are spaced from each other enabling low-overhead equipment to maneuver underneath the elevated building to drill drive pipe piles and to position a drop weight used for dynamic load testing the driven pipe piles. Grout is pumped under pressure into the pipe piles continuously during the drill driving of the pipe piles so that grout exits through a grout port to mix with disturbed soil about the pipe pile to encase the pipe pile in a grout-soil mixture. Sensors are attached to the pipe pile being tested. The sensors provide information regarding the pipe pile impacted by the drop weight. Bearing capacity and other pipe pile characteristics that indicate whether the pipe pile tested is acceptable are determined from the information provided by the sensors. 1. A method for using low-overhead equipment to conduct dynamic load testing a test pipe pile for a deep pile foundation being constructed underneath an elevated , existing building , comprising the steps of:a) driving the test pipe pile using low-overhead equipment, the test pipe pile comprising a starter pile segment and an uppermost pile segment having a top end, the starter pile segment being disposed at one end and the uppermost pile segment being disposed at the opposite end, the starter pile segment creates disturbed soil surrounding the starter pile segment as the starter pile segment is driven;b) injecting grout under pressure into the test pipe pile during the driving thereof so that grout exits through a grout port to mix with the disturbed soil to encase the test pipe pile in a grout-soil mixture;c) leaving a portion of the uppermost pile segment of the ...

METHOD AND APPARATUS FOR ANALYZING ANOMALIES IN CONCRETE STRUCTURES

Embodiments relate to a method and apparatus for investigating the uniformity of concrete and/or grout. Embodiments can identify the existence of one or more anomalies in the uniformity of concrete and/or grout, and/or determine or estimate the size, shape, type, and/or location of one or more anomalies in the uniformity of concrete and/or grout. Embodiments can utilize a string of temperature measuring sensors placed within one or more access bore(s), such as tube(s), positioned at least partially within the concrete and/or positioned proximate the concrete. The measurements obtained from the temperature measuring sensors can then be used to assist in the identification of existence of, size of, type of, shape of, and/or location of anomalies in the concrete and/or grout. 1. A method for investigating the uniformity of concrete , comprising:placing one or more access bores at least partially within concrete positioned in a volume and/or proximate the concrete positioned in the volume;positioning a string within the one or more access bores, wherein the string comprises one or more temperature measuring sensors; andcollecting temperature data from the one or more temperature measuring sensors.2. The method according to claim 1 , wherein the one or more access bores comprises one or more tubes.3. The method according to claim 2 , wherein at least one of the one or more access tubes is attached to a reinforcement cage or framework placed within the concrete.4. The method according to claim 2 ,wherein at least one of the one or more access tubes is cast in place before concrete positioned in the volume.5. The method according to claim 2 ,wherein at least one of the one or more access tubes is plunged in the concrete before the concrete cures.6. The method according to claim 2 ,wherein at least one of the one or more access tubes is placed such that a corresponding at least one longitudinal axis of the at least one of the one or more access tubes is across or proximate ...

APPARATUS AND METHOD FOR DETECTING GROUT COMPACTNESS IN GROUTED SPLICE SLEEVE

Provided is an apparatus and method for detecting grout compactness in grouted splice sleeve, the apparatus comprises a probe assembly, which comprises at least one of capacitive probe and piezoelectric sensor and is arranged inside the grouted splice sleeve to detect parameters of the sleeve during grouting and curing and a detector, which comprises at least an analysis module that is connected with the probe assembly to obtain the detected parameters and carry out calculation and analysis for the parameters. The probe assembly is arranged inside the grouted splice sleeve and forms a loop with the detector during grouting, such that during the process of grouting, the detected parameters will be changed as the surrounding dielectric changes, therefore, the detector may determine in real time whether the grouted splice sleeve is fully grouted by calculating and analyzing the detected parameters, which achieves a faster and easier grout compactness detection. 1. An apparatus for detecting grout compactness in grouted splice sleeve , comprising the probe assembly is inserted into the grouted splice sleeve through a first rubber plug at the top of the sleeve; or', 'the probe assembly is inserted into the grouted splice sleeve through a second rubber plug at the grout outlet of the sleeve; or', 'the probe assembly inserted into the grouted splice sleeve after being connected in parallel with the rebar;, 'a probe assembly, which comprises at least one of capacitive probe and piezoelectric sensor and is arranged inside the grouted splice sleeve to detect parameters of the sleeve during grouting and curing; wherein,'} at least one time base circuit, which is connected to the probe assembly;', 'at least one multi-vibrator, which is connected to the time base circuit; and', 'at least one smart display, which is connected to the output of the time base circuit for displaying output parameters., 'a detector, which comprises at least an analysis module that is connected with ...

Transparent frozen soil and preparation method and application thereof

The present invention discloses a transparent frozen soil, which is prepared from a fluorine-containing polymer, cube ice and a colorless pore fluid by steps of preparing materials, blending, vacuuming, consolidating, and freezing. The fluorine-containing polymer is Teflon AF 1600 produced by American DuPont Company, with the refractive index of 1.31, the particle diameter ≦0.074 mm, and the density of 2.1-2.3 g/cm 3 . The present invention also provides the application of above transparent frozen soil in the frozen soil directional blasting model test and the frozen soil road embankment model thaw-slumping landslide test. The transparent frozen soil prepared by the present invention can well simulate the properties of natural transparent frozen clay, is effectively used in model tests in the geotechnical engineering, with accurate measurement results, and can realize the visualization of the internal deformation of a soil body, and it is low in the expense, and simple in the operation.

APPARATUS AND DEVICE FOR TESTING A COMPONENT BY MEANS OF ULTRASOUND

An apparatus for testing a component by ultrasound comprises a plurality of identical devices. Each device has several channels of ultrasonic transducers as well as a master controller. The individual devices are daisy-chained and controlled by one of their master controllers. Mechanical connectors can be used to mechanically couple adjacent devices. Further, a number of differently shaped handles is provided, all of which can be coupled to a common handle interface. 1. A device for testing a component by ultrasound comprisinga housing,a plurality of bidirectional ultrasonic transducers arranged on a probing side of said housing,driver electronics arranged in said housing for operating said transducers, a mechanical handle interface arranged on said housing for mounting a handle, anda set of differently shaped handles, wherein each handle is structured to be mounted on said mechanical handle interface.2. The device of claim 1 , wherein said mechanical handle interface is structured to receive one as well as two of said handles at a time.3. The device of claim 1 , wherein said mechanical handle interface comprises a plurality of mechanical adapters located on a first mounting side of said housing claim 1 , wherein said first mounting side is transversal claim 1 , in particular perpendicular claim 1 , to said probing side and extends between a first and a second end face of the housing.4. The device of claim 3 , comprising at least one first handle having a foot section adapted and structured to connect to at least one of said adapters as well as a grip section to be gripped by a user claim 3 , wherein claim 3 , when said first handle is mounted to said housing claim 3 , said grip section is located at a center between said first and said second end face and extends away from said housing.5. The device of claim 4 , wherein said foot section is adapted and structured to connect to at least two of said adapters when being mounted to said housing and wherein said grip ...

ANCHOR DRIVING DEVICE

An anchor driving device includes an anchor, a driving member with a slide stop, an anchor rod, a slide collar, and a load cell. The driving member is removably coupled to the anchor. The slide stop of the driving member is spaced apart from and disposed above the anchor. The anchor rod is permanently coupled to the anchor. The slide collar is disposed on the driving member and is selectively affixed to the driving member with a release mechanism. The load cell is permanently coupled to the slide collar and selectively coupled to the anchor rod. The load cell is configured to measure a load through the anchor rod during a setting operation of the anchor. 1. An anchor driving device , comprising:an anchor;a driving member removably coupled to the anchor, the driving member having a slide stop spaced apart from and disposed above the anchor;an anchor rod permanently coupled to the anchor;a slide collar disposed on the driving member, the slide collar selectively affixed to the driving member with a release mechanism;a load cell permanently coupled to the slide collar and selectively coupled to the anchor rod; andwherein the load cell is configured to measure a load through the anchor rod during a setting operation of the anchor.2. The anchor driving device of claim 1 , further comprising an excavator mounted on a barge disposed on water claim 1 , wherein the excavator comprises a control room with a computer system that is interfaced to a boom and the anchor is rotatable about the anchor rod from an inline or perpendicular position for setting into a locked perpendicular position for anchoring.3. The anchor driving device of claim 2 , wherein the boom of the excavator has at least three pivot connections claim 2 , and wherein the boom is pivotably connected to an excavator bucket that is connected on a top of an I-beam.4. The anchor driving device of claim 3 , wherein the computer system is in electrical communication with the load cell that determines a holding ...

HAMMERING SYSTEM WITH ELECTROMAGNETIC POWER FOR DYNAMIC PILE TESTING

A new hammering system with electromagnetic power for dynamic pile testing. The basic working principle of the hammering system is as follows: when an internal coil is energized, a magnetic force is generated to attract tightly, via a magnetic conduction panel, an adaptive weight hammer disposed in contact with the surface of the panel; when the internal coil is de-energized, demagnetization occurs, and the weight hammer falls instantaneously to impact the pile top, thereby achieving the effects of a stable weight hammer and quick attraction and falling of the hammer. A clamping scale is arranged inside an adjustment section of a guide frame. A falling height of the weight hammer may be selected arbitrarily. 1. A hammering system with electromagnetic power for dynamic pile testing , comprising:an electromagnetic detacher, wherein when an internal coil of the electromagnetic detacher is energized, a magnetic force is generated to attract tightly, via a magnetic conduction panel, an adaptive weight hammer disposed in contact with the surface of the panel;when the internal coil is de-energized, demagnetization occurs, and the weight hammer falls instantaneously to impact a pile top as the magnetic force disappears; when the internal coil is energized again, a magnetic force is generated to attract the weight hammer again for performing next hammering;the electromagnetic detacher is a box-like component, which comprises a bottom shell, an iron core, a coil, a panel, a cable connection box, a current rectification control cabinet, a cable drum and a wireless remote controller, and is powered by a direct current;the hammering system comprises a cylindrical box in which a coil of a corresponding number of turns is wound according to an attraction force requirement; andwherein, in dynamic pile testing, the electromagnetic detacher is placed on the top surface of the weight hammer by using a crane, and energized to attract the weight hammer and lift it to a desired height; ...

Measurement Cell And Associated Measurement Method

A measurement cell includes: an enclosure; a flexible membrane disposed in the enclosure so as to contain a hardenable material; and means for stiffening the membrane configured to assume two alternative states: a stiffness state, in which the stiffening means resist the expansion of the hardenable material during solidification; and a flexible state, in which the stiffening means exert a stress that is less than that exerted in the stiffness state allowing at least one physical, chemical or mechanical property of the hardenable material to be measured and the hardenable material to be extracted from the enclosure; the stiffening means being produced by a set of metal wires connected to a clasp configured to modify the stiffness exerted by the metal wires.

Portable System and Method for Quality Assurance Testing of Asphalt Binders

A system includes a voltage supply configured to supply a drive voltage. A flexible device connects with the voltage supply. The flexible device is configured to be embedded into a material, e.g., a viscoelastic material. A strain gage connects with the flexible device, and the strain gage is configured to measure a flexing of the flexible device. A processor connects with the strain gage. The processor is configured to determine a measured strain and a phase shift between the drive voltage and the strain when voltage is supplied to the flexible device to produce a fingerprint of the material. The processor can be configured to determine G* and δ to produce a fingerprint of the material. 1. A system , comprising:a voltage supply configured to supply a drive voltage;a flexible device connected with the voltage supply, the flexible device configured to be embedded into a material;a strain gage connected with the flexible device, the strain gage configured to measure a flexing of the flexible device; anda processor connected with the strain gage, the processor configured to determine a measured strain and a phase shift between the drive voltage and the strain when voltage is supplied to the flexible device to produce a fingerprint of the material.2. The system of claim 1 , wherein the processor is further configured to convert the measured strain and phase shift into a dynamic sheer (G*) and phase angle (δ) fingerprint of the material.3. The system of claim 1 , wherein the processor is configured to compare the determined strain and phase shift to a known strain and phase shift of the material.4. The system of claim 1 , wherein the processor is configured to determine the strain and the phase shift over different frequencies of the drive voltage.5. The system of claim 1 , wherein the processor is configured to determine the strain and the phase shift over different temperatures of the material.6. The system of claim 1 , wherein the material comprises an asphalt binder. ...

FOUNDATION AND DEFLECTION MONITORING DEVICE

A foundation shift detection device includes a foundation portion attached to a foundation to be monitored, a base portion attached to a base adjacent to the foundation and supporting the same, and a rotary indicator attached to the base portion and adapted for rotation responsive to displacement of the foundation relative to the base. The rotary indicator is visible to a casual or walking inspection from a moderate distance, as by a human inspector making a walking inspection of a number of such devices. 1. In a foundation prone to periodic shift or movement between the foundation and a fixed base or foundation and tower , a passive foundation shift detection device , comprising:a biased displacement member, the biased displacement member having a force bias tending to dispose the displacement member against an interference member, the interference member adapted to permit incremental displacement of the biased displacement member based on movement of the foundation relative to the fixed base.2. The device of wherein the displacement member is disposed by a greater magnitude than a movement of the foundation that resulted in the displacement.3. The device of further comprising a visual marker attached to the displacement member claim 2 , the visual marker indicative of the movement based on an unmagnified visual inspection.4. A foundation shift detection device claim 2 , comprising:a foundation portion attached to a foundation to be monitored;a tower base portion attached to a base adjacent to the foundation;a rotary indicator attached to the tower base portion and adapted for rotation responsive to displacement of the foundation relative to the base.5. The device of wherein the rotary indicator is a cam responsive to rotational increments based on linear movement of the foundation portion.6. The device of wherein the rotary indicator has a plurality of radial sections claim 4 , each radial section corresponding to a an incrementally increasing diameter portion of ...

TEST METHOD FOR FRICTION RESISTANCE AT INNER AND OUTER SIDEWALLS OF PIPE PILE

The invention relates to a method to test friction resistance at inner and outer sidewalls of pipe pile through in-situ test. The method comprises embedding a strain sensor at inner or outer sidewalls of pipe pile to measure strain variation generating on pipe pile body under the action of load; carrying out static load test with the soil plug remaining in the pipe pile to obtain the strain variation εof the pipe pile body at the isoil layer; taking out the soil plug remaining in the pipe pile and carrying out static load test to obtain the strain variation εof the pipe pile body at the isoil layer; and obtaining the friction respectively at the outer and inner sidewalls of the pipe pile at the isoil layer according to the measured strain variation, εand ε. 1a. embedding a strain sensor at inner or outer sidewalls of pipe pile to measure strain variation generating on pipe pile body under the action of load;{'sub': 1j', 'p1j,i, 'sup': 'th', 'b. carrying out a static load test with a soil plug remaining in the pipe pile: applying a Pload to the upper end of the pipe pile to obtain a strain variation εof the pipe pile body at the isoil layer;'}{'sub': 2j', 'p2j,i, 'sup': 'th', 'c. taking out the soil plug remained in the pipe pile and carrying out static load test: applying a Pload onto the upper end of the pipe pile and measuring a strain variation εof the pipe pile body at the isoil layer by the strain sensor;'}{'sub': p1j,i', 'p2j,i, 'sup': 'th', 'd. according to the measured strain variation εand ε, the following are obtained: the friction at outer sidewall of the pipe pile at the isoil layer is'}. A test method for friction resistance of inner and outer sidewalls of pipe pile, comprising:1and the friction at inner sidewall of the pipe pile() at the isoil layer is{'sub': i', '1i', '2i, 'sup': th', 'th, 'wherein, E represents modulus of elasticity of the pipe pile; ΔHrepresents the thickness of the soil at the isoil layer; Rand Rrepresent the external and internal ...

Sensing Device, and Systems and Methods for Obtaining Data Relating to Concrete Mixtures and Concrete Structures

A plurality of sensing devices are inserted into a concrete mixture to be used at a construction site. The concrete mixture is poured to form one or more structural elements, wherein one or more sensing devices are embedded in the concrete of each structural element. Data relating to a first characteristic of the concrete in each structural element is received from the sensing devices. For each structural element, a second characteristic of the concrete of the associated structural element is determined, based on the first characteristic. A map showing the one or more structural elements is generated. For each of the one or more structural elements, a respective graphical indicator indicating the second characteristic associated with the respective structural element is displayed on the map. The map is displayed on a user device. 1. A method comprising:inserting a plurality of sensing devices into a concrete mixture to be used at a construction site;pouring the concrete mixture at the construction site to form one or more structural elements, wherein one or more sensing devices are embedded in the concrete of each structural element;receiving, from each of the plurality of sensing devices, data relating to a first characteristic of the concrete in the associated structural element;for each structural element, determining a second characteristic of the concrete of the associated structural element, based on the data relating to the first characteristic;generating a map showing the one or more structural elements;for each of the one or more structural elements, displaying on the map a respective graphical indicator indicating the second characteristic associated with the respective structural element; anddisplaying the map on a user device.2. The method of claim 1 , wherein each of the plurality of sensing devices includes one of a temperature sensor claim 1 , an accelerometer claim 1 , a pH sensor claim 1 , an inductance sensor claim 1 , an impedance or resistivity ...

METHOD OF DESIGN AND MANUFACTURING CONCRETE STRUCTURES BASED ON THE VERIFICATION OF CONCRETE FATIGUE STRENGTH BY TEST

Method of design and manufacturing concrete structures subjected to relevant cyclic loads along their service lives, as wind towers, and a fatigue testing machine. The method consists on the design of concrete structures conditioned by cyclic loads considering a fatigue strength value specified by the project as one of the main design parameters, which will be verified during the manufacturing phase as one of the control parameters of the quality assurance plan by performing fatigue strength test on concrete samples representative of the concrete structural elements produced on said manufacturing phase. The method allows to decouple the concrete fatigue strength from the compressive strength of the material, which is why includes a verification of the fatigue strength as a part of a quality assurance plan of production according to a new developed procedure. 1. Method of design and manufacturing concrete structural elements comprising: a.1) specification of mechanical characteristics of a concrete, including at least a fatigue strength value as one of the design parameters of a project; and', 'a.2) definition of dimensions of the concrete structural elements to be manufactured that, in combination with the design parameters specified on step a.1) including said fatigue strength value, allows to withstand expected stresses along the service life of said concrete elements;, 'a. a design phase, including b.1) manufacturing said concrete structural elements using a concrete and following the element dimensions defined on step a.2); and', 'b.2) performing quality controls which includes the extraction of concrete samples during a concrete production phase and the execution of fatigue strength tests over said concrete samples in order to verify that the test results are in accordance with a fatigue strength value that is specified on step a.1) of the project., 'b. a manufacturing and control phase, including2. The method according to claim 1 , wherein said concrete used ...

TEST APPARATUS FOR PILE-SOIL INTERFACE SHEAR MECHANICAL PROPERTIES

Embodiments of the present disclosure provide a test apparatus for pile-soil interface shear mechanical properties, comprising a support device, a pressure device, a membrane box, and a thrust device, wherein the support device comprises a bottom plate, a top plate, a support beam, and a plurality of bracing struts, the bottom plate and the top plate being both provided with a through-hole for inserting a model pile. The test apparatus for pile-soil interface shear mechanical properties according to the present disclosure has a simple structure and is easy to operate, which may accurately simulate mechanical properties of pile soils having different types of piled foundations in actual works, thereby facilitating researches on pile-soil testing. 11234111213145316. A test apparatus for pile-soil interface shear mechanical properties , comprising: a support device () , a pressure device () , a membrane box () , and a thrust device (); wherein the support device comprises a bottom plate (.) a top plate (.) , and a support beam (.) , the bottom plate and the top plate being connected via a plurality of bracing struts (.) , the support beam being disposed above the top plate; the pressure device is disposed on the support beam and arranged for applying a vertical pressure against a model pile () , a membrane barrel (.) of the membrane box is vertically disposed on the bottom plate and sleeved at a radial outer side of the model pile , an accommodating cavity being provided between the membrane barrel and the model pile , the thrust device is sleeved on the membrane barrel and arranged for applying a plurality of horizontal thrusting forces against the membrane barrel so as to squeeze a model soil () in the membrane barrel along a direction perpendicular to an axial direction of the model pile , the plurality of horizontal thrusting forces incrementing linearly from top to down.245. The test apparatus for pile-soil claim 1 , interface shear mechanical properties according ...

EMBANKMENT MONITORING SYSTEM

The embankment monitoring system comprises an optic sensor chain () and an interrogator (). The optic sensor chain () comprises a series of intrinsic fiber optic sensors () that are mutually spaced with respect to each other in a longitudinal direction of the optic sensor chain and at least one optic fiber () to optically connect the plurality of intrinsic fiber optic sensors to the interrogator. The interrogator is configured to issue an optic interrogation signal and the intrinsic fiber optic sensors are configured to respond to the optic interrogation signal with an optic measurement signal that is indicative for at least one physical parameter (P) sensed by the intrinsic fiber optic sensors. The interrogator is further configured to process the optic measurement signals of the intrinsic fiber optic sensors to estimate a depth (d) as a function of a position (p) along said optic sensor chain (). 1. An embankment monitoring system comprising:an optic sensor chain comprising a plurality of intrinsic fiber optic sensors that are mutually spaced with respect to each other in a longitudinal direction of the optic sensor chain and at least one optic fiber to optically connect the plurality of intrinsic fiber optic sensors to an interrogator; andthe interrogator configured to issue an optic interrogation signal and the plurality intrinsic fiber optic sensors configured to respond to the optic interrogation signal with an optic measurement signal that is indicative for at least one physical parameter sensed by the plurality of intrinsic fiber optic sensors, the interrogator configured to process the optic measurement signals of the plurality of intrinsic fiber optic sensors to estimate a depth as a function of a position along the optic sensor chain.2. The embankment monitoring system according to claim 1 , wherein the plurality of intrinsic fiber optic sensors are distance based.3. The embankment monitoring system according to claim 2 , wherein the plurality of ...

Ground engineering apparatus and method

A method for controlling a ground engineering apparatus including an elongate member for creating a bore at a predetermined location. The method includes receiving (S600) positional information relating to at least one positional information signal received at at least one respective location on the apparatus, processing (S602) the positional information to determine the relative positions of the apparatus and the predetermined location of the bore; and outputting (S604) a control signal for aligning the elongate member with the predetermined location of the bore. A ground engineering apparatus, computer apparatus, drilling rig and piling rig are also disclosed.

Self supporting type phc pile and construction method for the same

A method of constructing a self-supporting PHC pile according to an embodiment of the present invention includes the steps of drilling PHC piles at a desired installation site, prestressing the PHC piles at a preset degree in a post-tension manner, and excavating the installation site based on a retaining wall formed by the PHC piles. According to the present invention, it is possible to smoothly cope with soil pressure applied to PHC piles when constructing a retaining wall using the self-supporting PHC piles.

单丝抗温变围护结构监测装置及围护结构位移测量方法

本发明公开了一种单丝抗温变围护结构监测装置及围护结构位移测量方法，涉及监测技术领域，包括位移测量组件和温变抵消组件，所述位移测量组件包括钢丝和远离所述围护结构设置的转向件，所述钢丝的一端连接围护结构，另一端绕过所述转向件并竖直下垂，且所述钢丝竖直下垂部分的端部系有重物，且所述钢丝竖直下垂部分的一侧设有竖直的量尺；所述温变抵消组件为固定于钢丝竖直下垂部分上的温变计，所述温变计包括内部中空的管体和与管体内部连通的管柱，所述管体内部填充有线性膨胀液体。本发明能够有效避免外在因素对测量准确度的影响，保证监测结果的准确性。

利用锚具进行锚杆张拉方法

本发明涉及锚杆张拉的技术领域，公开了利用锚具进行锚杆张拉方法，具体步骤如下：1)、将锚具与对接架进行卡合固定连接，在构建物的外表面设置支架，在支架上固定设置千斤顶；2)、在对接架、支架及千斤顶之间穿设对接钢筋；3)、通过千斤顶对对接钢筋朝上张拉，对接钢筋通过对接架及锚具对锚杆实现朝上张拉；施工时，首先将对接架与锚具进行卡合固定连接，并在构建物设置支撑千斤顶的支架，然后将对接钢筋的上端穿过千斤并相对固定，将对接钢筋的下端穿过穿过支架与对接架相对固定连接，通过千斤顶对支架施加朝下的压力，从而在支架上产生反向朝上拉动对接钢筋的力，而对接钢筋通过对接架及锚具对锚杆进行朝上张拉，实现对锚杆的张拉测试。

一种混凝土坍落度检测装置

本发明公开了一种混凝土坍落度检测装置，包括主体机构、调整机构、观测机构和支撑机构，主体机构的外表面上设置有调整机构，调整机构的外表面上设置有观测机构，调整机构的下端设置有支撑机构，连通管与存水筒能够构成一个连通器，再利用连通器原理，同一大气压下，水平的两个存水筒的液面高度应该相同，在放置锥形筒时，可以先通过存水筒观看锥形筒是否处于水平状态，又主箱体的上端设置有微调机构，支撑柱的一端固定安装有微调块，支撑柱的另一端设置有顶座，支撑柱的一侧设置有螺纹杆，支撑柱通过螺纹杆与顶座活动连接，支撑柱通过顶座与调整套板相连接，若不处于，则通过顶座的旋转来进行调整，使锥形筒处于水平状态，减小坍落度检测误差。

一种建筑工程监理用桩基检测装置及方法

本发明公开了工程监理技术领域的一种建筑工程监理用桩基检测装置及方法，包括底板，所述底板底部固定连接有水平调节机构，所述水平调节机构包括六杆调节螺母、U型架，所述底板顶部中间固定连接有定位机构，所述定位机构包括调节杆、L型连杆、夹紧横杆、夹紧横杆和旋转连杆，所述底板顶部固定连接有提升机构，所述提升机构包括支架、卷绳基座、卷绳滚筒，桩基左侧固定连接有检测装置；本发明通过调节杆、L型连杆、定位环和夹紧横杆共同作用，一方面使待检测桩基、被提升的重锤、吊重锤的钢丝绳保持同一轴心位置，提高检测准确性，另一方面使被提升的重锤快速稳定，降低检测等待时间。

混凝土浇灌监测传感器

本发明涉及一种混凝土浇灌监测传感器，包括传感器本体及线缆组件，所述传感器本体借助所述线缆组件与监测设备电性连接，所述传感器本体包括传感器外壳，套设于所述传感器外壳上、用于采集外界信息的感应铜环，以及固定设置于所述传感器外壳内、用于接收并处理信息的传感器主板，所述感应铜环与传感器主板电性连接。本发明通过对混凝土中水分含量的检测，准确地区分出了混凝土、混凝土泥浆的混合层以及泥浆层，有效地实现了在混凝土灌注的动态过程中，对混凝土实际高度的实时监测。同时，本发明与其他相关设备的适配性较高，使用本发明所得到的监测结果可以广泛应用于各类相关设备中，为这些设备的正常运作提供了数据支持。

Link type probe for borehole loading test, borehole loading test method using the probe and analyzing method of pile bearing capacity by the test

The present invention relates to a link type probe for a borehole loading test and a borehole loading test method using the same suitably, and a method for analyzing the bearing capacity of a bored pile through a borehole loading test, wherein the probe easily measures the nonlinear behavior characteristic of the ground by largely applying deformation to the ground. The probe according to the present invention is a probe inserted into a borehole and applying pressure to a borehole wall, which comprises: a first jack in which a piston installed inside a cylinder reciprocates up and down; a support placed below the first jack; multiple links rotating between the first jack and the support and installed to be foldable; pressure plates installed at the outer surfaces of folding parts of the links; and a displacement measuring sensor (150) measuring the displacements of the pressure plates, wherein the pressure plates move by spreading or retracting while the links are rotated and folded by the reciprocation of the piston in the first jack. [Reference numerals] (a) Before operation;(b) After operation

一种路基沉降用检测辅助装置

本发明公开了路基沉降检测技术领域的一种路基沉降用检测辅助装置，包括底座和侧板，底座上转动连接有第一检测板和第二检测板，第一检测板上设有第一检测组件，第二检测板上均匀设有多个第二检测组件，且第一检测板和第二检测板的外侧段底面分别设有支撑组件，本发明通过调节手柄调节支撑柱的位置，使第一检测板或者第二检测板处于水平位置，提高后续的检测准确度；可以通过移动块使测距传感器移动进行测量，也可以通过第二检测板上的多个检测杆进行检测，从而根据需要选择不同的检测结构和检测方式，使用更灵活；通过将第一检测板和第二检测板转动收起，减小装置占用空间，便于进行转移和收纳。

一种应用层析成像技术检测旋喷桩并控制其桩径的方法

本发明涉及应用层析成像技术检测旋喷桩并控制其桩径的方法，包括：(1)、根据旋喷桩地质条件，在不同地层中各选取一个检测区域；(2)、在旋喷桩外边缘处布设若干个声测管且各声测管间保持平行；(3)、在其中一个声测管内置入发射换能器并在其它声测管内置入接收换能器；(4)、从各声测管的底部以一定方式提升发射换能器和接收换能器，并实时记录声时、振幅和频率；(5)、根据实时记录数据反演重建旋喷桩的超声波速分布图像，依据其得出旋喷桩的桩径；(6)、将得到的桩径与设计要求的桩径进行比对，若不一致，则调整施工参数。该方法实现了旋喷桩桩径的快速无损检测，节约了资金和成本，并能及时纠正偏差，保证工程质量。

Output monitor-control device for induction motor

研究复合地基与支护结构共同性状的离心模型试验系统及试验方法

本发明公开了研究复合地基与支护结构共同性状的离心模型试验系统及方法，包括模型箱，在模型箱内设有地基土，地基土内竖直嵌有用于模拟支护桩的支护板，在模型箱内支护板的一侧竖直设有多个基桩模型桩，嵌有基桩模型桩的地基土顶部设置褥垫层，地基土、基桩模型桩和褥垫层共同形成复合地基，在支护板的另一侧设置用于模拟开挖的开挖区，在基桩模型桩与支护板上分别布设有与计算机连接的测试装置，在复合地基的上部设置荷载加压装置；整个试验系统可根据需求设置用于测试在基坑开挖时，复合地基中地基土变形位移数据等的测试系统；这样在开挖区进行开挖时，研究复合地基与支护结构的力或者位移产生的变化，从而更好的指导实践。

一种旋挖桩桩底扩大头简易检测装置及其使用方法

一种旋挖桩桩底扩大头简易检测装置，包括二根绳索、一根钢筋，其特征在于：所述两根绳索的长度相同,且比桩深度长1m；所述钢筋为直条钢筋杆；其中：二根绳索分别捆绑在钢筋的两端，两根尼龙绳在钢筋上的捆绑间距应小于桩身直径10cm为宜。本发明的旋挖桩桩底扩大头简易检测装置及其使用方法具有检测装置结构简单、制作方便，检测装置实用性强，使用方便、效果明显，有效控制了桩基扩大头设计尺寸，也能避免桩基扩大头漏扩的现象的优点。

Method and device for removing a sample

Die Erfindung betrifft eine Vorrichtung und ein Verfahren zur Entnahme einer Probe einer Füllung, mit welcher ein Loch im Boden gefüllt ist, mit einem Behälter mit mindestens einer Einlassöffnung zum Einströmen der Füllung in einen Aufnahmeraum des Behälters. Gemäß der Erfindung ist vorgesehen, dass eine Verschlusskappe auf die Einlassöffnung gesteckt und diese hierdurch verschlossen ist. Der Behälter ist mit einer Druckluftleitung versehen, welche in den Aufnahmeraum mündet, wobei bei Einleitung von Druckluft in den Aufnahmeraum die Verschlusskappe von der Einlassöffnung gelöst und diese zum Einströmen der Füllung freigegeben ist. The invention relates to an apparatus and a method for taking a sample of a filling, with which a hole in the bottom is filled with a container having at least one inlet opening for flowing the filling into a receiving space of the container. According to the invention it is provided that a closure cap is placed on the inlet opening and this is thereby closed. The container is provided with a compressed air line, which opens into the receiving space, wherein when introducing compressed air into the receiving space, the closure cap is released from the inlet opening and this is released to flow in the filling.