CN109541188A - A kind of high-precision coagulation cracking resistance detection device - Google Patents
A kind of high-precision coagulation cracking resistance detection device Download PDFInfo
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- CN109541188A CN109541188A CN201910015692.XA CN201910015692A CN109541188A CN 109541188 A CN109541188 A CN 109541188A CN 201910015692 A CN201910015692 A CN 201910015692A CN 109541188 A CN109541188 A CN 109541188A
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- 238000005336 cracking Methods 0.000 title claims abstract description 45
- 230000015271 coagulation Effects 0.000 title claims abstract description 41
- 238000005345 coagulation Methods 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 claims abstract description 187
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 238000005259 measurement Methods 0.000 claims abstract description 47
- 238000011534 incubation Methods 0.000 claims description 60
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 56
- 230000000694 effects Effects 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 238000000429 assembly Methods 0.000 claims description 10
- 230000000712 assembly Effects 0.000 claims description 10
- 239000002689 soil Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 17
- 238000000034 method Methods 0.000 description 11
- 238000005057 refrigeration Methods 0.000 description 8
- 238000004140 cleaning Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
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- Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of high-precision coagulation cracking resistance detection devices, it include air circulation constant temperature heat-shield mechanism, the flexible measuring mechanism of concrete and rack, the flexible measuring mechanism of concrete includes concrete test slot, actuator, measurement structure, the end of concrete test slot is moveable structure, actuator is fixedly connected with one end of concrete test slot, actuator can drive one end of concrete test slot to be moved, when concreting is in concrete test slot, measurement structure is inserted into concrete, pocket circulation constant temperature heat-shield mechanism is connected to the temperature realized and adjust concrete test slot with concrete test slot.The device can not only adjust the temperature of concrete by pocket circulation constant temperature heat-shield mechanism, influence of the temperature to concrete bracing can be studied, and the measurement for carrying out restraint stress obtains the stress generated under concrete Complete Bind state, the deformation values under concrete free deformation state can also be measured, test data is very comprehensive.
Description
Technical field
The invention belongs to concrete field of measuring technique, in particular to a kind of high-precision coagulation cracking resistance detection device.
Background technique
Cement concrete condenses hardening under field conditions (factors), usually all shows as the drying shrinkage for having certain, and volume is received
The size of contracting value with the factors such as the difference of the kind of cement, the size of the ratio of mud, the variation of curing condition and application environment without
Together.Micro-crack can be generated due to shrinking in inside concrete, this is not only destroyed the globality of concrete structure, Er Qiehui
Influence the mechanical property and endurance quality of concrete.In existing research, still none is mixed by the Comprehensive Assessment that engineering circles are approved
Solidifying soil crack resistance.Importantly, it is fewer for the crack resistance index of concrete at present, and many existing indexs do not have
By strict physics derivation process, lack necessary physical significance, authenticity and reliability are difficult to ensure, are lacked and are persuaded
Power.
In addition, a not strong major reason of the comprehensive not high, applicability of country's crack resistance index is experimental method now
It is not perfect.The country is ring method and flat band method for evaluating the common method that cracks, and two methods are to quantitative analysis coagulation
The early mechanics characteristics of soil have certain difficulty.
Ring method disadvantage: obtained data only limit and strain value, and the analysis for mechanical property without standard measure, temperature is gone through
Cheng Danyi is uncontrollable, and degree of restraint is single uncontrollable, can not simulate degree of restraint and temperature development course in Practical Project, separately
There is certain difficulty for the test of big aggregate concrete since size limits ring method outside, obtained test data discreteness is tighter
Weight.
Flat band method disadvantage: experimental result poor repeatability, be more concerned about with early-age plastic drying shrinkage, can not evaluation temperature cash and from
Cracking caused by raw contraction distortion, can not quantitative determine concrete performance parameter, can not evaluate concrete and be become by temperature
Stress caused by changing, has different with the cracking resistance of practical maturing.
In the patent application that patent application number is CN200410001788.4, a kind of concrete shrinkage and stress are disclosed
Measuring device, it is related to the measurement of concrete shrinkage and internal stress, and concrete shrinkage and inside can be detected automatically by solving
The problem of stress.It is provided with through slot by being welded with placement mold 11,11 in steel plate 13,20,12 below rectangular frame 12,19
10,11 fasten with the screw of closure plate 15 and 12, and steel plate 4,8 with holes is welded on closure plate 9, and screw rod 1 is connected to 11 across 12 hole
On, there is hole 5 in bloom 3, tetragonous steel column 6 penetrates the hole and 5 on 4,8, and sensor 7 is mounted in 5 between 6, the closure plate of mold 21
It is inserted with small steel column 18,23 in hole, is respectively provided with sensor 16,25 on steel plate 17,24, the output signal of sensor is terminated with instrument
Table.
But the measuring device of concrete shrinkage and stress disclosed in foregoing invention, it is not adjustable the temperature of concrete, and
And influence of the temperature to concrete bracing cannot be studied, test data is not comprehensive enough.
Summary of the invention
To solve the above problems, the primary purpose of the present invention is that providing a kind of high-precision coagulation cracking resistance detection dress
It sets, the temperature of concrete can be not only adjusted by pocket circulation constant temperature heat-shield mechanism, then measures, temperature can be studied
Influence to concrete bracing, and carry out measurement the answering of obtaining generating under concrete Complete Bind state of restraint stress
Power, the measurement that can also be deformed obtain the deformation values under concrete free deformation state, and test data is very comprehensive.
To achieve the above object, technical scheme is as follows:
The present invention provides a kind of high-precision coagulation cracking resistance detection device, include air circulation constant temperature heat-shield mechanism,
The flexible measuring mechanism of concrete and rack, the flexible measuring mechanism of concrete are arranged at air circulation constant temperature heat-shield mechanism
In rack, the flexible measuring mechanism of concrete includes concrete test slot, actuator, measurement structure, and the concrete is surveyed
The end of experimental tank is moveable structure, and the actuator is fixedly connected with one end of concrete test slot, and the actuator can
One end of driving concrete test slot is moved, and when concreting is in concrete test slot, measurement structure insertion is mixed
In solidifying soil, the pocket circulation constant temperature heat-shield mechanism is connected to the temperature realized and adjust concrete test slot with concrete test slot.
In the present invention, the temperature of concrete is adjusted by pocket circulation constant temperature heat-shield mechanism, measurement structure is measured, can be studied
Influence of the temperature to concrete bracing is stretched or is compressed through the one end of actuator to concrete test slot, right
Concrete realizes Complete Bind and Free Transform two states, and concrete early stage can first expand after-contraction, under Complete Bind state,
It when concrete expansion, controls and compression and back original position is carried out to one end of concrete test slot, when concrete shrinkage, control is to mixed
One end of solidifying soil test trough carries out retracting original position；Under free deformation, same mechanism is controlled to the one of concrete test slot
End is stretched and is compressed, and concrete is made to be in free deformation, to be measured by measurement structure mixed under two states
Solidifying soil parameter, test data are very comprehensive.
Further, top cover is also stamped on concrete test slot, air circulation constant temperature heat-shield mechanism includes incubation cavity, control
Incubator, conduit, the temperature-controlled box are fixed on rack side, and cavity of the incubation cavity between rack and concrete test slot is described
Incubation cavity is connected to by conduit with temperature-controlled box, and the incubation cavity is concave shape, and the incubation cavity is wrapped in concrete test slot
Around, and incubation cavity is located at below top cover, and the air in incubation cavity is heated or freezed by temperature-controlled box, the temperature-controlled box
It is additionally provided with air pump between conduit, recycles air between temperature-controlled box and incubation cavity by the setting of air pump and conduit；
The conduit includes the first conduit and the second conduit, and one end of the first conduit is connected to the left end of incubation cavity, the
The other end of one conduit is connected to the left end of temperature-controlled box；One end of second conduit is connected to the right end of incubation cavity, the second conduit
The other end is connected to the right end of temperature-controlled box；In the present invention, by above-mentioned setting, after so that air is passed through incubation cavity from the first conduit
Temperature-controlled box is returned to from the second conduit, recycles air between temperature-controlled box and incubation cavity.
One end that first conduit is connected to incubation cavity is provided with the first connector, the first connector include first base with
First link block, the first base connect and are connected with the first conduit, one end of the first link block and first base one at
Type is connected and is connected, and the other end of the first link block stretches out on the position of the incubation cavity left end, and first link block stretches out
The part of incubation cavity offers the first gas outlet；One end that second conduit is connected to incubation cavity is provided with the second connector, and second
Connector includes second base and the second link block, and the second base connect and is connected with the second conduit, the second link block
One end and second base be integrally formed connection and be connected, the other end of the second link block stretches out the position of the incubation cavity right end
On, the part that second link block stretches out incubation cavity offers the second gas outlet.It in the present invention, can by above-mentioned setting
Preferably realize that the temperature in the incubation cavity for guaranteeing concrete test slot surrounding is consistent with the temperature of concrete, to prevent coagulation
Soil carries out heat exchange with extraneous, guarantees that concrete is not influenced in test by the external world, improves measurement concrete early deformation, just
The precision of factors such as spend, creep.
In the present embodiment, heating tube, refrigeration compressor, power regulator are equipped in the temperature-controlled box, heating tube adds
Thermal power >=4000W, refrigeration work consumption >=1200W of refrigeration compressor, the heating power of heating tube are adjusted by power regulator.It should
Temperature-controlled box and its inside are set as the prior art, and power regulator 0~100% is linear adjustable, and power regulator is by the prior art
In measurement and control program control, set by software control panel in the prior art, by the application of the above-mentioned prior art,
The temperature-controlled box heats the air in incubation cavity by heating tube and power regulator, and the temperature-controlled box passes through refrigeration pressure
Contracting machine freezes to the air in incubation cavity, and temperature-controlled box is enable to heat or freeze the air in incubation cavity, realizes
Guarantee that the temperature in the incubation cavity of concrete test slot surrounding is consistent with the temperature of concrete, thus prevent concrete and it is extraneous into
Row heat exchange guarantees that concrete is not influenced in test by the external world, improves measurement concrete early deformation, rigidity, creeps
The precision of factor.
Further, actuator is stepper motor, and one end that stepper motor is connect with concrete test slot is provided with flexible
Head, the stepper motor is flexible to drive one end of concrete test slot to be stretched or compressed by control telescopic head,
Load transducer is additionally provided between the telescopic head and stepper motor, the two sides of the concrete test slot are provided with LVDT
Displacement sensor, the LVDT displacement sensor are electrically connected with load transducer.Strain gauge is provided in the measurement structure.?
In the present invention, stepper motor is controlled by existing control host, can control stepper motor to one end of concrete test slot
It is stretched or is compressed, load transducer is electrically connected with existing control host with strain gauge, can by above-mentioned setting
Preferably control stepper motor is stretched or is compressed to one end of concrete test slot, to concrete realization Complete Bind and certainly
By deformation two states, to measure the concrete parameters under two states by measurement structure, test data is very comprehensive.
In the present embodiment, reservation threshold is set by controlling host, when Complete Bind, deformation≤| ± 0.5 μm |,
When Free Transform, stress≤| ± 0.01MPa |.Stepper motor is controlled by control host to stretch one end of concrete test slot
Perhaps compression makes the concrete in test trough be in two kinds of degree of restraint of Free Transform or Complete Bind, measures its production respectively
Raw restraint stress and strain, the deformation that concrete sample occurs control, and realize that the degree of restraint of concrete sample is
100%, measured stress is restraint stress.
Further, the flexible measuring mechanism of concrete is additionally provided with fixed structure, and the fixed structure includes first solid
Fixed board, the second fixed plate, the first guide post, the second guide post, the first fixed plate and the second fixed plate are each attached in rack, and described the
One end of one guide post and the second guide post is separately fixed at the both sides of the edge of the first fixed plate, first guide post and the second guide post
The other end be separately fixed at the both sides of the edge of the second fixed plate, the first fixed plate, the second fixed plate, the first guide post, second
Guide post is enclosed the cavity for accommodating concrete test slot and stepper motor, and the left end of the concrete test slot supports
The right end of the inside of first fixed plate, the concrete test slot is fixedly connected with the telescopic head of stepper motor one end, the step
The inside of the second fixed plate is fixed on into the motor other end.In the present invention, concrete spirit can be increased by above-mentioned setting
The stability of measuring mechanism living, ensure that it not only and regular tenacity concrete can be tested outside, can also be to C80 intensity
The strong concrete of ratings above carries out cracking resistance test.
Further, the concrete test slot includes side form, bed die, end mould, support component and side form moving assembly
It being fixed on the rack with the bottom of bed die moving assembly, support component, bed die is supported on the rack by bed die moving assembly,
LVDT displacement sensor is fixedly connected by connector with end mould, and the LVDT displacement sensor of the two sides of concrete test slot passes through
Connector is separately fixed at the top of the first guide post and the second guide post, and the side form is arranged by the top of support component in bed die
Side, the end of bed die is arranged in the bottom of the end mould, and the end of side form, the stepping is arranged in the side wall of the end mould
The telescopic head of motor one end is fixed on the outside of end mould, thus stretched or compressed with moved end mould, the width of the end mould
Width than the bed die is big, the side form, and bed die and end mould are enclosed the concrete test slot that end is greater than middle part, described
Connecting component is provided between end mould and side form, the connecting component is arcuate structure, and the top setting of the support component exists
On bed die, the outside of side form is arranged in the side form moving assembly, and the side form moving assembly can drive side form to be moved forward and backward,
The bottom of bed die is arranged in the bed die moving assembly, and the bed die moving assembly can drive bed die to move up and down；
Heating rod is provided in the connecting component；It can make the concrete test slot end by the heating of heating rod
The temperature cabinet of concrete and intermediate position, prevents temperature gradient, can more accurately study temperature to concrete
It influences.
The bottom of the end mould is additionally provided with top plate, and the surface of the top plate and the bottom surface of end mould are in same plane
On, top plate bottom is connected with the jack through pedestal, and the top plate is supported on pedestal table by the very heavy head part through pedestal
Top plate can be ejected susceptor surface by face, the jack.Top plate can be ejected into susceptor surface by jack by external force, thus
After the completion of facilitating test, the concrete of solidification is taken out.
In the present invention, by above-mentioned setting, so that the end of the concrete test slot is greater than intermediate position, clamping is facilitated to survey
The concrete of examination, end mould can move along end direction, can be stretched and be compressed, convenient to control to the deformation of concrete
System is realized uniaxial constraint, is convenient for measuring, and is arranged by the arcuate structure of connecting component, and the concrete test slot is being become
Arc connects at section, substantially reduces the possibility of stress concentration, concrete is avoided crack or cracking occur at end position,
Go on smoothly test can；After the concrete sample being cast in test trough forms and reaches sufficient intensity, need to remove
When concrete sample, bed die is driven to move down by bed die moving assembly, support component is supported on concrete sample at this time,
It drives the side form of concrete test slot removable by side form moving assembly, is convenient to clean, and side form can pass through with bed die
Bed die moving assembly and side form moving assembly are adjusted, and are additionally provided with support component, are used to support concrete sample, can effectively eliminate
The frictional force of test trough and concrete sample, and prevent concrete sample gravity by curved.
Further, the end mould is 2, and the side form is 2, and the connecting component is 4,2 side forms point
The two sides of bed die are not set, and the left end of 2 side forms is adjacent with an end two sidewalls for mould respectively, the left end with 2 side forms
The two sidewalls of adjacent end mould are connect with 2 connecting components respectively, the right end of 2 side forms two sides with another end mould respectively
Wall is adjacent, and the two sidewalls of the end mould adjacent with the right end of 2 side forms are connect with other 2 connecting components respectively, is located at 2 side forms
The outside of the end mould of right end is fixedly connected with stepper motor；By above-mentioned setting, more convenient concrete for clamping test is convenient
The deformation of concrete is controlled, it is convenient that the deformation of concrete is controlled, and pass through the arc knot of 4 connecting components
Structure setting connects concrete test slot arc at variable cross-section, substantially reduces the possibility of stress concentration, avoid concrete
There is crack or cracking at end position, go on smoothly test can.
The side form moving assembly includes the first side form fixing piece, the second side form fixing piece, the first rotary shaft, the second rotation
Shaft, the first telescopic shaft, the second telescopic shaft, the first side form fixing piece and the second side form fixing piece are separately fixed at 2 sides
The outside of mould, first telescopic shaft are fixedly connected with the first side form fixing piece, one end of first telescopic shaft and the first rotation
Shaft connection, the other end of first telescopic shaft stretch out the first side form fixing piece and are fixedly connected with one end of the second rotary shaft,
The other end of second rotary shaft is connect with one end of the second telescopic shaft, and the other end of the second telescopic shaft and the second side form fixing piece are solid
The position of fixed connection, first telescopic shaft and the second rotation axis connection is located at below side form, second rotary shaft and second
The position of flexible axis connection is located at below side form, and first rotary shaft can drive the rotation of the first telescopic shaft when rotating and front and back is moved
Dynamic, the first telescopic shaft can drive the second rotary shaft to rotate when rotating, and the second rotary shaft can be driven when rotating before and after the second telescopic shaft
It is mobile；One end of first rotary shaft and the first flexible axis connection may be provided with external screw thread, and the first telescopic shaft and the first rotary shaft connect
The one end connect may be provided with internal screw thread, and one end of the second rotary shaft and the second flexible axis connection may be provided with external screw thread, and second stretches
One end of contracting axis and the second rotation axis connection may be provided with internal screw thread, when the first rotary shaft rotates clockwise, pass through internal screw thread
The first telescopic shaft is driven to rotate and move forward counterclockwise with externally threaded be adapted to, to drive it by the first side form fixing piece
In a side form be moved along, meanwhile, the first telescopic shaft drive the second rotary shaft rotate counterclockwise, pass through internal screw thread and external screw thread
Adaptation drive the second telescopic shaft move backward, moved backward to move another side form by the second side form fastener tapes, two
Block side form is moved away from, easy cleaning concrete sample after molding.
The bed die moving assembly includes bed die fixing piece, bed die rotary shaft, bed die telescopic shaft, the bed die fixing piece
Be fixed on the bottom of bed die, one end of the bed die telescopic shaft is fixedly connected with bed die fixing piece, the bed die telescopic shaft it is another
One end and bed die rotate axis connection, and bed die telescopic shaft can be driven to move up and down when bed die rotary shaft rotation.In the present invention
In, may be provided with external screw thread in bed die rotary shaft, one end that bed die telescopic shaft and bed die rotate axis connection is provided with internal screw thread, when
When bed die rotary shaft rotates clockwise, bed die telescopic shaft is driven to move down with externally threaded be adapted to by internal screw thread, thus logical
Crossing bed die fixing piece drives bed die to move down, easy cleaning concrete sample after molding；It may be provided in bed die rotary shaft
One end of external screw thread, bed die telescopic shaft and bed die rotation axis connection is provided with internal screw thread, when bed die rotary shaft rotates clockwise,
Bed die telescopic shaft is driven to move down with externally threaded be adapted to by internal screw thread, to drive bed die down by bed die fixing piece
It is mobile, easy cleaning concrete sample after molding.
The support component includes support plate, support column, pedestal, and support column and pedestal are 2, and the pedestal is fixed
Pulley is provided on the top of support column, 2 pedestals, pulley can rotate on pedestal, be respectively and fixedly provided with beside 2 pulleys with
The integrally formed baffle of pedestal, the baffle are located on the outside of side form, and the both ends of the support plate are located at the cunning of 2 support bases
On wheel, the support plate can be slided on pulley, and 2 detents, 2 side forms are formed between the baffle and support plate on 2 pedestals
Bottom be located in 2 detents, and 2 side forms can move within the scope of detent.In the present invention, support component can be set
3 are set to, by above-mentioned setting, enables the more efficient frictional force for eliminating test trough and concrete sample of support component, and
And prevent concrete sample gravity by curved.
Further, the measurement structure further includes having reference test bar, magnet, pedestal, and pedestal is placed on top cover, strain gauge
On the base, the end of the strain gauge is adsorbed by the top of magnet and reference test bar to be fixed, the lower part of the reference test bar for setting
It is inserted into the concrete in concrete test slot, reference test bar is enable to move together with the deformation of concrete；On the pedestal
It is additionally provided with sliding rail, sliding block, supporting block, the sliding rail is fixed on the base, and the sliding block is flexibly connected on the slide rail, the branch
Bracer is fixed on sliding block, and the strain gauge is fixed in supporting block, and the strain gauge can be slided on the slide rail by sliding block.?
In the present invention, reference test bar is inserted perpendicularly into concrete, top cover, pedestal is put by concreting into after concrete test slot
It sets on top cover, and encloses magnet, the top of reference test bar is fixed by the absorption of the end of magnet and strain gauge, is strained
After the calibration of meter, test measurement is carried out；The top of strain gauge and reference test bar is adsorbed by strong magnet and is fixed, and in the prior art
It is compared by the way of spring connection, spring bring resistance can be eliminated, guarantee the accuracy of measurement, by the way that reference test bar is straight
It patches in concrete, can directly measure the deformation of concrete itself, improve accuracy；It, can be with by above-mentioned setting
Strain gauge can be transferred in the middle part of range by sliding rail, sliding block, supporting block before realizing test, in case no to scale when measurement, is adjusted
It is whole it is good after, sliding rail, sliding block, supporting block are motionless, and when test, one end of strain gauge connection magnet is provided with stretching structure, can be with
The movement of reference test bar and stretch out, after the completion of test, can measure mobile distance, to measure the deformation of concrete itself.
Further, reference test bar is the small material of thermal expansion coefficient, and reference test bar, magnet, strain gauge, slide assemblies are 2
A, the sliding rail of 2 slide assemblies is separately fixed at the left and right ends of pedestal, and the sliding block of 2 slide assemblies is respectively and movably connected to
On the sliding rail of the left and right ends of pedestal, the supporting block of 2 slide assemblies is separately fixed on the sliding block of the left and right ends of pedestal, and 2
A strain gauge is separately fixed in the supporting block on the left and right ends of pedestal, and 2 reference test bars are fixed respectively by 2 magnet absorption
In the end of 2 strain gauges；Motion bar is additionally provided on the pedestal, offered in the supporting block of the left and right ends of pedestal with
The left end of the compatible perforation of motion bar, the motion bar is vacantly arranged after the perforation of the supporting block of left end of the base, described
The right end of motion bar is supported after the perforation of the supporting block of right end of the base on the reference test bar for being located at right end of the base, the activity
Bar can move in the perforation of supporting block.In the present invention, reference test bar is not fixedly connected with motion bar, and motion bar is not when measurement
It is dynamic, before only testing, the adjusting of strain gauge can be made more convenient by the setting of motion bar, facilitate and be transferred to strain gauge
In the middle part of range, in order to avoid no to scale when measurement.
Further, the flexible measuring mechanism of the concrete further includes having Bit andits control to protect structure, the Bit andits control
Protecting structure includes fixing seat, attachment base, and the fixing seat is fixed on the rack, and contact bar is provided in the fixing seat,
The attachment base is fixed on the end mould for being connected with stepper motor, and stepper motor is connected by telescopic head with end mould, stepper motor
It is circumscribed with power-off protecting circuit, attachment base is connected with end mould, and fixing seat is connected with power-off protecting circuit, and the attachment base can be with
It holds mould mobile, two-way cut-offing protecting switch is provided on the attachment base, the two-way cut-offing protecting switch is provided with movable sky
Between, the contact bar is located in activity space, when attachment base is moved to one end or the other end of two-way cut-offing protecting switch
It is contacted with contact bar, then attachment base is connected by contacting bar with fixing seat, then attachment base, fixing seat, power-off protecting circuit, end
Mould forms conductive loops, triggers power-off protection.So that stepper motor is not worked, be capable of the moving range of control terminal mould, mould moves when end
It moves to when making to contact the range for the activity space that bar is more than two-way cut-offing protecting switch, power-off protection, anti-not-go-end mould will be triggered
It is damaged greatly very much with stepper motor telescopic extensions, use is safer.In the present invention, power-off protecting circuit is the prior art,
It can be realized above-mentioned function.
Further, the movable notch through attachment base is offered in the middle part of the attachment base, activity space is located at activity and lacks
Mouthful top, two-way cut-offing protecting switch includes the first fixed block, the first fixing head, first flap, the second fixed block, second solid
Determine head, second flap, first fixed block is fixed on the left side that attachment base is located at movable notch, and first fixing head is fixed
In the first fixed block towards one end of activity space, the first flap is fixed on inner wall of first fixing head towards activity space
On；Second fixed block is fixed on the right side that attachment base is located at movable notch, and it is fixed that second fixing head is fixed on second
For block towards one end of activity space, the second flap is fixed on the second fixing head towards on the inner wall of activity space, and described
The activity space for accommodating contact bar is formed between one baffle and second flap, when attachment base is moved to first flap or second gear
The inside of piece is contacted with contact bar, then attachment base is connected by first flap or second flap with fixing seat, then attachment base, consolidate
Reservation, power-off protecting circuit, end mould form conductive loops, trigger power-off protection.It is capable of the moving range of control terminal mould, anti-not-go-end
Mould is damaged with stepper motor, and use is safer.
The beneficial effects of the present invention are: compared with the prior art, in the present invention, pass through the heat-insulated machine of pocket circulation constant temperature
Structure adjusts the temperature of concrete, and measurement structure measures, can study influence of the temperature to concrete bracing, pass through drive
Moving part is stretched or is compressed to one end of concrete test slot, realizes two kinds of shapes of Complete Bind and Free Transform to concrete
State, concrete early stage can first expand after-contraction, under Complete Bind state, when concrete expansion, control to concrete test slot
One end carry out that compression and back is in situ, and when concrete shrinkage, control carries out retracting original position to one end of concrete test slot；Freely
Under deformation state, same mechanism, control is stretched and is compressed to one end of concrete test slot, is in concrete freely
Deformation state, to measure the concrete parameters under two states by measurement structure, test data is very comprehensive.
Detailed description of the invention
Fig. 1 is a kind of 1 schematic diagram of embodiment of high-precision coagulation cracking resistance detection device of the present invention.
Fig. 2 is a kind of 2 schematic diagram of embodiment of high-precision coagulation cracking resistance detection device of the present invention.
Fig. 3 is first jiao of a kind of flexible measuring mechanism of concrete of high-precision coagulation cracking resistance detection device of the present invention
Spend structural schematic diagram.
Fig. 4 is second jiao of a kind of flexible measuring mechanism of concrete of high-precision coagulation cracking resistance detection device of the present invention
Spend structural schematic diagram.
Fig. 5 is a kind of embodiment of the flexible measuring mechanism of concrete of high-precision coagulation cracking resistance detection device of the present invention
1 schematic diagram.
Fig. 6 is a kind of embodiment of the flexible measuring mechanism of concrete of high-precision coagulation cracking resistance detection device of the present invention
2 schematic diagrames.
Fig. 7 is a kind of first angle structure of the concrete test slot of high-precision coagulation cracking resistance detection device of the present invention
Schematic diagram.
Fig. 8 is a kind of second angle structure of the concrete test slot of high-precision coagulation cracking resistance detection device of the present invention
Schematic diagram.
Fig. 9 is a kind of structural schematic diagram of the bed die moving assembly of high-precision coagulation cracking resistance detection device of the present invention.
Figure 10 is a kind of structural schematic diagram of the support component of high-precision coagulation cracking resistance detection device of the present invention.
Figure 11 is a kind of support base of high-precision coagulation cracking resistance detection device of the present invention and the structural schematic diagram of pedestal.
Figure 12 is a kind of structural schematic diagram of the measurement structure of high-precision coagulation cracking resistance detection device of the present invention.
Figure 13 is a kind of 3 schematic diagram of embodiment of high-precision coagulation cracking resistance detection device of the present invention.
Figure 14 is that a kind of structure of the Bit andits control protection structure of high-precision coagulation cracking resistance detection device of the present invention is shown
It is intended to.
Figure 15 is a kind of 4 schematic diagram of embodiment of high-precision coagulation cracking resistance detection device of the present invention.
Figure 16 is a kind of partial enlarged view of the embodiment 4 of high-precision coagulation cracking resistance detection device of the present invention.
Figure 17 is a kind of 5 schematic diagram of embodiment of high-precision coagulation cracking resistance detection device of the present invention.
Figure 18 is a kind of partial enlarged view of the embodiment 5 of high-precision coagulation cracking resistance detection device of the present invention.
Figure 19 is the of a kind of air circulation constant temperature heat-shield mechanism of high-precision coagulation cracking resistance detection device of the present invention
One angled arrangement schematic diagram.
Figure 20 is the of a kind of air circulation constant temperature heat-shield mechanism of high-precision coagulation cracking resistance detection device of the present invention
Two angled arrangement schematic diagrames.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to shown in Fig. 1-2 0, it includes that air follows that the present invention, which provides a kind of high-precision coagulation cracking resistance detection device,
The flexible measuring mechanism 2 of ring constant temperature heat-shield mechanism 1, concrete and rack 3, the flexible measuring mechanism 2 of concrete and air circulation constant temperature
Heat-shield mechanism 1 is arranged in rack 3, and the flexible measuring mechanism 2 of concrete includes concrete test slot 21, actuator 22, surveys
Structure 23 is measured, the end of concrete test slot 21 is moveable structure, and actuator 22 and one end of concrete test slot 21 are solid
Fixed connection, actuator 22 can drive one end of concrete test slot 21 to be moved, when concreting is in concrete test slot
When in 21, measurement structure 23 is inserted into concrete, and pocket circulation constant temperature heat-shield mechanism 1 is connected to realization with concrete test slot 21 and adjusts
Save the temperature of concrete test slot 21.In the present invention, the temperature of concrete is adjusted by pocket circulation constant temperature heat-shield mechanism 1,
Measurement structure 23 measures, and can study influence of the temperature to concrete bracing, is surveyed by actuator 22 to concrete
One end of experimental tank 21 is stretched or is compressed, and realizes that Complete Bind and Free Transform two states, concrete are early to concrete
Phase can first expand after-contraction, under Complete Bind state, when concrete expansion, control and carry out to one end of concrete test slot 21
Compression and back is in situ, and when concrete shrinkage, control carries out retracting original position to one end of concrete test slot 21；Free deformation
Under, same mechanism, control is stretched and is compressed to one end of concrete test slot 21, and concrete is made to be in Free Transform shape
State, to measure the concrete parameters under two states by measurement structure 23, test data is very comprehensive.
In the present embodiment, top cover 4 is also stamped on concrete test slot 21, air circulation constant temperature heat-shield mechanism 1 includes
Incubation cavity 11, temperature-controlled box 12, conduit, cavity of the incubation cavity 11 between rack 3 and concrete test slot 21, temperature-controlled box 12 are solid
It is scheduled on 3 side of rack, incubation cavity 11 is connected to by conduit with temperature-controlled box 12, and incubation cavity 11 is concave shape, and incubation cavity 11 is wrapped in
Around concrete test slot 21, and incubation cavity 11 is located at the lower section of top cover 4, by temperature-controlled box 12 to the air in incubation cavity 11 into
Row heating or refrigeration, are additionally provided with air pump 14, are controlling air by the setting of air pump 14 and conduit between temperature-controlled box 12 and conduit
It is recycled between incubator 12 and incubation cavity 11；
Conduit includes the first conduit 131 and the second conduit 132, one end and the left end of incubation cavity 11 of the first conduit 131
Connection, the other end of the first conduit 131 are connected to the left end of temperature-controlled box 12；One end of second conduit 132 and the right side of incubation cavity 11
End connection, the other end of the second conduit 132 are connected to the right end of temperature-controlled box 12；In the present invention, by above-mentioned setting, make air
From the second conduit 132 return to temperature-controlled box 12 after being passed through incubation cavity 11 from wherein the first conduit 131, make air temperature-controlled box 12 with
It is recycled between incubation cavity 11.
One end that first conduit 131 is connected to incubation cavity 11 is provided with the first connector 133, and the first connector 133 includes
There are first base 1331 and the first link block 1332, first base 1331 connect and is connected with the first conduit 131, the first connection
One end of block 1332 and first base 1331 are integrally formed connection and are connected, and the other end of the first link block 1332 stretches out incubation cavity
On the position of 11 left ends, the part that the first link block 1332 stretches out incubation cavity 11 offers the first gas outlet 1333；Second conduit
132 one end being connected to incubation cavity 11 are provided with the second connector 134, the second connector 134 include second base 1341 with
Second link block 1342, second base 1341 connect and are connected with the second conduit 132, one end of the second link block 1342 and the
Two pedestals 1341 are integrally formed connection and are connected, and the other end of the second link block 1342 stretches out on the position of 11 right end of incubation cavity,
The part that second link block 1342 stretches out incubation cavity 11 offers the second gas outlet 1343.In the present invention, pass through above-mentioned setting
It can preferably realize that the temperature in the incubation cavity 11 for guaranteeing 21 surrounding of concrete test slot is consistent with the temperature of concrete, from
And concrete and extraneous progress heat exchange are prevented, guarantee that concrete is not influenced in test by the external world, improves measurement concrete
Early deformation, rigidity, the precision for the factors such as creep.
In the present embodiment, heating tube, refrigeration compressor, power regulator, the heating of heating tube are equipped in temperature-controlled box 12
Power >=4000W, refrigeration work consumption >=1200W of refrigeration compressor, the heating power of heating tube are adjusted by power regulator.The control
Incubator 12 and its inside are set as the prior art, and power regulator 0~100% is linear adjustable, and power regulator is by the prior art
In measurement and control program control, set by software control panel in the prior art, by the application of the above-mentioned prior art,
Temperature-controlled box 12 heats the air in incubation cavity 11 by heating tube and power regulator, and temperature-controlled box 12 passes through refrigerant compression
Machine freezes to the air in incubation cavity 11, and temperature-controlled box 12 is enable to heat or freeze the air in incubation cavity 11,
Realize that the temperature in the incubation cavity 11 for guaranteeing 21 surrounding of concrete test slot is consistent with the temperature of concrete, to prevent concrete
With the external world carry out heat exchange, guarantee concrete test when do not influenced by the external world, improve measurement concrete early deformation, just
The precision of factors such as spend, creep.
In the present embodiment, actuator 22 is stepper motor, and one end that stepper motor is connect with concrete test slot 21 is set
It is equipped with telescopic head 221, stepper motor is flexible to drive one end of concrete test slot 21 to be drawn by control telescopic head 221
It stretches or compresses, load transducer 222, the two sides of concrete test slot 21 are additionally provided between telescopic head 221 and stepper motor
It is provided with LVDT displacement sensor 223, LVDT displacement sensor 223 is electrically connected with load transducer 222.In measurement structure 23
It is provided with strain gauge 231.In the present invention, stepper motor is controlled by existing control host, can control stepper motor pair
One end of concrete test slot 21 is stretched or is compressed, and load transducer 222 and strain gauge 231 are led with existing control
Mechatronics can preferably control stepper motor by above-mentioned setting and one end of concrete test slot 21 is stretched or pressed
Contracting realizes Complete Bind and Free Transform two states to concrete, to be measured under two states by measurement structure 23
Concrete parameters, test data are very comprehensive.
In the present embodiment, reservation threshold is set by controlling host, when Complete Bind, deformation≤| ± 0.5 μm |,
When Free Transform, stress≤| ± 0.01MPa |.Stepper motor is controlled by control host to draw one end of concrete test slot 21
Stretching perhaps to compress makes the concrete in test trough be in two kinds of degree of restraint of Free Transform or Complete Bind, measures it respectively
The restraint stress and strain of generation, the deformation that concrete sample occurs control, and realize the degree of restraint of concrete sample
It is 100%, measured stress is restraint stress.
In the present embodiment, the flexible measuring mechanism 2 of concrete is additionally provided with fixed structure, and fixed structure includes first solid
Fixed board 241, the second fixed plate 242, the first guide post 243, the second guide post 244, the first fixed plate 241 and the second fixed plate 242 are
It is fixed in rack 3, one end of the first guide post 243 and the second guide post 244 is separately fixed at the both sides of the edge of the first fixed plate 241
The other end of place, the first guide post 243 and the second guide post 244 is separately fixed at the both sides of the edge of the second fixed plate 242, and first
Fixed plate 241, the second fixed plate 242, the first guide post 243, the second guide post 244 are enclosed a receiving concrete test slot 21
With the cavity of stepper motor, the left end of concrete test slot 21 is supported in the inside of the first fixed plate 241, concrete test slot 21
Right end be fixedly connected with the telescopic head 221 of stepper motor one end, the stepper motor other end is fixed on the interior of the second fixed plate 242
Side.In the present invention, the stability that can increase the flexible measuring mechanism 2 of the concrete by above-mentioned setting, ensure that it not only
Outside being tested regular tenacity concrete, cracking resistance can also be carried out to the strong concrete of C80 intensity ratings above
Performance test.
In the present embodiment, concrete test slot 21 includes side form 211, bed die 212, end mould 213, support component 214
With side form moving assembly 215 and bed die moving assembly 216, the bottom of support component 214 is fixed in rack 3, and bed die 212 passes through
Bed die moving assembly 216 is supported in rack 3, and LVDT displacement sensor 223 is fixedly connected by connector 224 with end mould 213,
The LVDT displacement sensor 223 of the two sides of concrete test slot 21 by connector 224 be separately fixed at the first guide post 243 with
The side of bed die 212 is arranged in by the top of support component 214 for the top of second guide post 244, side form 211, end mould 213
The end of bed die 212 is arranged in bottom, and the end of side form 211, the telescopic head of stepper motor one end is arranged in the side wall of end mould 213
221 are fixed on the outside of end mould 213, to be stretched or be compressed with moved end mould 213, hold the width of mould 213 than bed die 212
Width it is big, side form 211, bed die 212 and end mould 213 be enclosed end be greater than middle part concrete test slot 21, hold mould
Connecting component 217 is provided between 213 and side form 211, connecting component 217 is arcuate structure, and the top of support component 214 is arranged
On bed die 212, the outside of side form 211 is arranged in side form moving assembly 215, and side form moving assembly 215 can drive side form
211 are moved forward and backward, and the bottom of bed die 212 is arranged in bed die moving assembly 216, and bed die moving assembly 216 can drive bed die
212 move up and down；
Heating rod 218 is provided in connecting component 217；It can make the concrete test slot by the heating of heating rod 218
The temperature cabinet of the concrete of 21 ends and intermediate position, prevents temperature gradient, can more accurately study temperature pair
The influence of concrete.
The bottom of end mould 213 is additionally provided with top plate 219, and the surface of top plate 219 and the bottom surface of end mould 213 are same flat
On face, 219 bottom of top plate is connected with the jack (not shown) through pedestal, and top plate 219 passes through the jack through pedestal
(not shown) part is supported on susceptor surface, and top plate 219 can be ejected susceptor surface by jack (not shown).It can will be pushed up by external force
Plate 219 ejects susceptor surface by jack (not shown), to take out the concrete of solidification after the completion of facilitating test.
In the present invention, by above-mentioned setting, so that the end of the concrete test slot 21 is greater than intermediate position, facilitate clamping
The concrete of test, end mould 213 can move along end direction, can be stretched and be compressed, the convenient deformation to concrete
It is controlled, realizes uniaxial constraint, be convenient for measuring, and be arranged by the arcuate structure of connecting component 217, make the concrete
The arc at variable cross-section of test trough 21 connects, and substantially reduces the possibility of stress concentration, concrete is avoided to occur at end position
Crack or cracking go on smoothly test can；When the concrete sample being cast in test trough forms and reaches sufficiently strong
After degree, when needing dismantling concrete test specimen, bed die 212 is driven to move down by bed die moving assembly 216, at this time support component
214 are supported on concrete sample, drive the side form 211 of concrete test slot 21 removable by side form moving assembly 215,
It is convenient to clean, and side form 211 and bed die 212 can be adjusted by bed die moving assembly 216 and side form moving assembly 215, also
It is provided with support component 214, is used to support concrete sample, the frictional force of test trough and concrete sample can be effectively eliminated, and
And prevent concrete sample gravity by curved.
In the present embodiment, end mould 213 is 2, and side form 211 is 2, and connecting component 217 is 4, and 2 side forms 211 divide
The two sides of bed die 212 are not set, and the left end of 2 side forms 211 is adjacent with an end two sidewalls for mould 213 respectively, with 2 sides
The two sidewalls of the adjacent end mould 213 in the left end of mould 211 are connect with 2 connecting components 217 respectively, the right end point of 2 side forms 211
Not adjacent with the two sidewalls of another end mould 213, the two sidewalls of adjacent with the right end of 2 side forms 211 end mould 213 are respectively and separately
Outer 2 connecting components 217 connection, the outside positioned at the end mould 213 of 2 211 right ends of side form is fixedly connected with stepper motor；It is logical
Above-mentioned setting is crossed, more convenient concrete for clamping test is convenient to control the deformation of concrete, convenient to concrete
Deformation is controlled, and by the setting of the arcuate structure of 4 connecting components 217, makes the concrete test slot 21 in variable cross-section
Locate arc connection, substantially reduces the possibility of stress concentration, avoid concrete from crack or cracking occur at end position, make to survey
Examination can be gone on smoothly.
Side form moving assembly 215 includes the first side form fixing piece 2151, the second side form fixing piece 2152, the first rotary shaft
2153, the second rotary shaft 2154, the first telescopic shaft 2155, the second telescopic shaft 2156, the first side form fixing piece 2151 and second side
Mould fixing piece 2152 is separately fixed at the outside of 2 side forms 211, and the first telescopic shaft 2155 and the first side form fixing piece 2151 are fixed
Connection, one end of the first telescopic shaft 2155 are connect with the first rotary shaft 2153, and the other end of the first telescopic shaft 2155 stretches out first
Side form fixing piece 2151 is fixedly connected with one end of the second rotary shaft 2154, and the other end of the second rotary shaft 2154 is stretched with second
One end of contracting axis 2156 connects, and the other end of the second telescopic shaft 2156 is fixedly connected with the second side form fixing piece 2152, and first stretches
The position that contracting axis 2155 is connect with the second rotary shaft 2154 is located at 211 lower section of side form, the second rotary shaft 2154 and the second telescopic shaft
The position of 2156 connections is located at 211 lower section of side form, and the first rotary shaft 2153 can drive the rotation of the first telescopic shaft 2155 simultaneously when rotating
It is moved forward and backward, the first telescopic shaft 2155 can drive the second rotary shaft 2154 to rotate when rotating, the second rotary shaft 2154 can when rotating
The second telescopic shaft 2156 is driven to be moved forward and backward；One end that first rotary shaft 2153 is connect with the first telescopic shaft 2155 may be provided with outer
Screw thread, one end that the first telescopic shaft 2155 is connect with the first rotary shaft 2153 may be provided with internal screw thread, the second rotary shaft 2154 with
One end of second telescopic shaft 2156 connection may be provided with external screw thread, the second telescopic shaft 2156 connect with the second rotary shaft 2154 one
End may be provided with internal screw thread, when the first rotary shaft 2153 rotates clockwise, drive the with externally threaded be adapted to by internal screw thread
One telescopic shaft 2155 is rotated counterclockwise and is moved forward, to drive one of side form by the first side form fixing piece 2151
211 are moved along, meanwhile, the first telescopic shaft 2155 drives the second rotation counterclockwise of rotary shaft 2154, passes through internal screw thread and outer spiral shell
The adaptation of line drives the second telescopic shaft 2156 to move backward, to drive another side form by the second side form fixing piece 2152
211 move backward, and two pieces of side forms 211 are moved away from, easy cleaning concrete sample after molding.
Bed die moving assembly 216 includes bed die fixing piece 2161, bed die rotary shaft 2162, bed die telescopic shaft 2163, bottom
Mould fixing piece 2161 is fixed on the bottom of bed die 212, and one end of bed die telescopic shaft 2163 is fixedly connected with bed die fixing piece 2161,
The other end of bed die telescopic shaft 2163 is connect with bed die rotary shaft 2162, and bed die can be driven to stretch when the rotation of bed die rotary shaft 2162
Contracting axis 2163 moves up and down.In the present invention, external screw thread, bed die telescopic shaft 2163 and bottom be may be provided in bed die rotary shaft 2162
Mould rotary shaft 2162 connect one end be provided with internal screw thread, when bed die rotary shaft 2162 rotates clockwise, by internal screw thread with
Externally threaded adaptation drives bed die telescopic shaft 2163 to move down, to drive bed die 212 down by bed die fixing piece 2161
It is mobile, easy cleaning concrete sample after molding；It may be provided with external screw thread, bed die telescopic shaft 2163 in bed die rotary shaft 2162
The one end connecting with bed die rotary shaft 2162 is provided with internal screw thread, when bed die rotary shaft 2162 rotates clockwise, passes through interior spiral shell
Line drives bed die telescopic shaft 2163 to move down with externally threaded be adapted to, to drive bed die 212 by bed die fixing piece 2161
It moves down, easy cleaning concrete sample after molding.
Support component 214 includes support plate 2141, support column 2142, pedestal 2143, support column 2142 and pedestal 2143
It is 2, pedestal 2143 is fixed on the top of support column 2142, is provided with pulley 2144, pulley on 2 pedestals 2143
2144 can rotate on pedestal 2143, be respectively and fixedly provided with beside 2 pulleys 2144 and the integrally formed baffle 2145 of pedestal 2143, gear
Plate 2145 is located at 211 outside of side form, and the both ends of support plate 2141 are located on the pulley 2144 of 2 support bases, support plate
2141 can slide on pulley 2144, and 2 detents are formed between the baffle 2145 and support plate 2141 on 2 pedestals 2143
The bottom of 2146,2 side forms 211 is located in 2 detents 2146, and 2 side forms 211 can move in 2146 range of detent
It is dynamic.In the present invention, support component 214 can be set to 3, by above-mentioned setting, keep support component 214 more efficient
The frictional force of test trough and concrete sample is eliminated, and prevents concrete sample gravity by curved.
In the present embodiment, measurement structure 23 further includes having reference test bar 238, magnet (not shown), pedestal 232, pedestal
232 are placed on top cover 4, and strain gauge 231 is arranged on pedestal 232, the end of strain gauge 231 by magnet (not shown) with
The top of reference test bar 238, which is adsorbed, to be fixed, and in the concrete in the lower part insertion concrete test slot 21 of reference test bar 238, makes to test
Bar 238 can be moved together with the deformation of concrete；Sliding rail 233, sliding block 234, supporting block 235 are additionally provided on pedestal 232,
Sliding rail 233 is fixed on pedestal 232, and sliding block 234 is movably connected on sliding rail 233, and supporting block 235 is fixed on sliding block 234, is answered
Become meter 231 to be fixed in supporting block 235, strain gauge 231 can be slided on sliding rail 233 by sliding block 234.In the present invention, it mixes
Solidifying soil is poured into after concrete test slot 21, and reference test bar 238 is inserted perpendicularly into concrete, top cover 4, and pedestal 232 is placed
On top cover 4, and magnet (not shown) is enclosed, the top of reference test bar 238 is passed through to the end of magnet (not shown) and strain gauge 231
Portion's absorption is fixed, and after the calibration for carrying out strain gauge 231, carries out test measurement；By strong magnet (not shown) by strain gauge 231
Adsorb and fix with the top of reference test bar 238, by the way of use spring to connect in the prior art compared with, spring band can be eliminated
Resistance, guarantee measurement accuracy can directly measure concrete sheet by the way that reference test bar 238 to be inserted directly into concrete
The deformation of body, improves accuracy；By above-mentioned setting, can also realize can be by sliding rail 233, sliding block 234, branch before testing
Strain gauge 231 is transferred in the middle part of range by bracer 235, in case no to scale when measurement, after adjusting, sliding rail 233, sliding block 234, branch
Bracer 235 is motionless, and when test, one end that strain gauge 231 connects magnet (not shown) is provided with stretching structure 2311, can be with survey
The movement of bar 238 and stretch out, after the completion of test, can measure mobile distance, to measure the deformation of concrete itself.
In the present embodiment, reference test bar 238 is the small material of thermal expansion coefficient, and reference test bar 238, is answered at magnet (not shown)
Change meter 231, slide assemblies are 2, and the sliding rail 233 of 2 slide assemblies is separately fixed at the left and right ends of pedestal 232,2 cunnings
On the sliding rail 233 for the left and right ends that the sliding block 234 of dynamic component is respectively and movably connected to pedestal 232, the supporting block of 2 slide assemblies
235 are separately fixed on the sliding block 234 of the left and right ends of pedestal 232, and 2 strain gauges 231 are separately fixed at the left and right of pedestal 232
In supporting block 235 on both ends, 2 reference test bars 238 are separately fixed at 2 strain gauges 231 by 2 magnet (not shown) absorption
End；It is additionally provided with motion bar 236 on pedestal 232, offers and lives in the supporting block 235 of the left and right ends of pedestal 232
The compatible perforation 237 of lever 236, the left end of motion bar 236 pass through 237 rear overhang of perforation of the supporting block 235 of 232 left end of pedestal
Sky setting, the right end of motion bar 236 supports after the perforation 237 of the supporting block 235 of 232 right end of pedestal is being located at pedestal 232
On the reference test bar 238 of right end, motion bar 236 can move in the perforation 237 of supporting block 235.In the present invention, reference test bar 238
It is not fixedly connected with motion bar 236, motion bar 236 is motionless when measurement, can setting by motion bar 236 before only testing
Setting can make the adjusting of strain gauge 231 more convenient, facilitate and strain gauge 231 is transferred in the middle part of range, in order to avoid plussage when measurement
Journey.
In the present embodiment, the flexible measuring mechanism 2 of concrete further includes having Bit andits control to protect structure 25, and Bit andits control is protected
Protection structure 25 includes fixing seat 251, attachment base 252, and fixing seat 251 is fixed in rack 3, is provided with and connects in fixing seat 251
Feeler lever 2511, attachment base 252 are fixed on the end mould 213 for being connected with stepper motor, and stepper motor passes through telescopic head 221 and end mould
213 conductings, stepper motor are circumscribed with power-off protecting circuit, and attachment base 252 and end mould 213 are connected, fixing seat 251 and power-off protection
Circuit conducting, attachment base 252 can be mobile with end mould 213, and two-way cut-offing protecting switch is provided on attachment base 252, two-way disconnected
Electric protective circuit breaker is provided with activity space 254, and contact bar 2511 is located in activity space 254, when attachment base 252 is moved to pair
To cut-offing protecting switch one end or other end with contact bar 2511 contact, then attachment base 252 by contact bar 2511 with
Fixing seat 251 is connected, then attachment base 252, fixing seat 251, power-off protecting circuit, end mould 213, formation conductive loops, triggering are disconnected
Electric protection.So that stepper motor is not worked, be capable of the moving range of control terminal mould 213, mould 213, which is moved to, when end makes to contact bar 2511
More than the activity space 254 of two-way cut-offing protecting switch range when, power-off protection, anti-not-go-end mould 213 and stepping will be triggered
Motor flexible range is damaged greatly very much, and use is safer.In the present invention, power-off protecting circuit is the prior art, Neng Goushi
Existing above-mentioned function.
In the present embodiment, the movable notch 2521 through attachment base 252, activity space are offered in the middle part of attachment base 252
254 are located at movable 2521 top of notch, two-way cut-offing protecting switch include the first fixed block 2531, the first fixing head 2532,
First flap 2533, the second fixed block 2534, the second fixing head 2535, second flap 2536, the first fixed block 2531 are fixed on
Attachment base 252 is located at the left side of movable notch 2521, and the first fixing head 2532 is fixed on the first fixed block 2531 towards movable sky
Between 254 one end, first flap 2533 is fixed on the first fixing head 2532 towards on the inner wall of activity space 254；Second is fixed
Block 2534 is fixed on the right side that attachment base 252 is located at movable notch 2521, and the second fixing head 2535 is fixed on the second fixed block
2534 towards one end of activity space 254, and second flap 2536 is fixed on the second fixing head 2535 towards in activity space 254
On wall, the activity space 254 for accommodating contact bar 2511 is formed between first flap 2533 and second flap 2536, works as attachment base
252 insides for being moved to first flap 2533 or second flap 2536 are contacted with bar 2511 is contacted, then attachment base 252 passes through
First flap 2533 or second flap 2536 and fixing seat 251 are connected, then attachment base 252, fixing seat 251, power-off protection electricity
Road, end mould 213 form conductive loops, trigger power-off protection.It is capable of the moving range of control terminal mould 213, anti-not-go-end mould 213 and step
It is damaged into motor, use is safer.
The present invention in actual operation, after concrete preparation, is directly poured into concrete test slot 21, the good measurement structure of cloth
23, after carrying out seal operation, top cover 4 starts to measure by control host with measurement structure 23.Stepper motor cooperates load
Sensor 222 and LVDT displacement sensor 223 is stretched or is compressed to concrete.Meanwhile air circulation constant temperature heat-shield mechanism
1, guarantee that concrete sample ambient temperature is identical as test specimen, keep half adiabatci condition, heating rod 218 can guarantee concrete test
The concrete of 21 end of slot is identical as the temperature at middle part, and temperature gradient is not present, can more accurately study temperature to coagulation
The influence of soil.After test, concrete sample is ejected with jack (not shown), is cleared up.
In actual operation, referring to shown in Fig. 1,2,5,6,13, stepper motor, the first fixed plate 241, the second fixed plate
Shell can be arranged outside 242, it is shown in Figure 2, can also top cover 4, referring to shown in Fig. 1,2,5,6, outside measurement structure 3
Shell can be put on, to realize preferably test.
Referring to shown in Figure 15,17, in order to preferably see internal structure clearly, measurement structure is omitted.
The beneficial effects of the present invention are: compared with the prior art, in the present invention the advantages of:
1, it can directly pour into concrete test slot, measure after concrete preparation；
2, it by the temperature of air circulation constant temperature heat-shield mechanism adjustable concrete, then measures, can be obtained complete
Concrete temperature history, study influence of the temperature to concrete bracing；
3, air circulation constant temperature heat-shield mechanism simultaneously can guarantee concrete sample be in half adiabatci condition, concrete least
The research of early-age crack state is carried out under sharp state, also maximum can avoid influence of the environmental factor to concrete sample；
4, it is stretched or is compressed through the one end of actuator to concrete test slot, Complete Bind is realized to concrete
With Free Transform two states, concrete early stage can first expand after-contraction, under Complete Bind state, when concrete expansion, and control
It makes and compression and back original position is carried out to one end of concrete test slot, when concrete shrinkage, control one end to concrete test slot
It carries out retracting original position；Under free deformation, same mechanism, control is stretched and is pressed to one end of concrete test slot
Contracting, makes concrete be in free deformation, to measure the concrete parameters under two states by measurement structure, tests number
According to very comprehensively；Then elasticity modulus can be calculated, concrete can be measured in the development of the elasticity modulus of entire hardening process.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of high-precision coagulation cracking resistance detection device, it is characterised in that include air circulation constant temperature heat-shield mechanism, mixed
Flexibly measuring mechanism and rack, the flexible measuring mechanism of concrete and air circulation constant temperature heat-shield mechanism are arranged at machine to solidifying soil
On frame, the flexible measuring mechanism of concrete includes concrete test slot, actuator, measurement structure, the concrete test
The end of slot is moveable structure, and the actuator is fixedly connected with one end of concrete test slot, and the actuator can drive
One end of dynamic concrete test slot is moved, and when concreting is in concrete test slot, measurement structure is inserted into coagulation
In soil, the pocket circulation constant temperature heat-shield mechanism is connected to the temperature realized and adjust concrete test slot with concrete test slot.
2. high-precision coagulation cracking resistance detection device according to claim 1, it is characterised in that on concrete test slot
It is also stamped top cover, air circulation constant temperature heat-shield mechanism includes incubation cavity, temperature-controlled box, conduit, and the temperature-controlled box is fixed on rack
Side, the incubation cavity are connected to by conduit with temperature-controlled box, and the incubation cavity is concave shape, and the incubation cavity is wrapped in concrete
Around test trough, and incubation cavity is located at below top cover, and the air in incubation cavity is heated or freezed by temperature-controlled box, institute
State and be additionally provided with air pump between temperature-controlled box and conduit, by the setting of air pump and conduit make air between temperature-controlled box and incubation cavity into
Row circulation；
The conduit includes the first conduit and the second conduit, and one end of the first conduit is connected to the left end of incubation cavity, and first leads
The other end of pipe is connected to the left end of temperature-controlled box；One end of second conduit is connected to the right end of incubation cavity, the second conduit it is another
End is connected to the right end of temperature-controlled box；
One end that first conduit is connected to incubation cavity is provided with the first connector, and the first connector includes first base and first
Link block, the first base connect and are connected with the first conduit, and one end of the first link block and first base are integrally formed and connect
It connects and is connected, the other end of the first link block stretches out on the position of the incubation cavity left end, and first link block stretches out heat preservation
The part of chamber offers the first gas outlet；One end that second conduit is connected to incubation cavity is provided with the second connector, the second connection
Head includes second base and the second link block, and the second base connect and is connected with the second conduit, and the one of the second link block
End is integrally formed connection with second base and is connected, and the other end of the second link block stretches out on the position of the incubation cavity right end,
The part that second link block stretches out incubation cavity offers the second gas outlet.
3. high-precision coagulation cracking resistance detection device according to claim 2, it is characterised in that actuator is stepping electricity
Machine, one end that stepper motor is connect with concrete test slot are provided with telescopic head, and the stepper motor is stretched by controlling telescopic head
Contracting is additionally provided between the telescopic head and stepper motor to drive one end of concrete test slot to be stretched or compressed
Load transducer, the two sides of the concrete test slot are provided with LVDT displacement sensor, the LVDT displacement sensor with
Load transducer electrical connection.Strain gauge is provided in the measurement structure.
4. high-precision coagulation cracking resistance detection device according to claim 3, it is characterised in that concrete flexibly measures
Mechanism is additionally provided with fixed structure, and the fixed structure includes the first fixed plate, the second fixed plate, the first guide post, second leads
Column, the first fixed plate and the second fixed plate are each attached in rack, and one end of first guide post and the second guide post is fixed respectively
At the both sides of the edge of the first fixed plate, the other end of first guide post and the second guide post is separately fixed at the second fixed plate
At both sides of the edge, the first fixed plate, the second fixed plate, the first guide post, the second guide post are enclosed a receiving concrete test
The cavity of slot and stepper motor, the left end of the concrete test slot are supported in the inside of the first fixed plate, and the concrete is surveyed
The right end of experimental tank is fixedly connected with the telescopic head of stepper motor one end, and the stepper motor other end is fixed on the second fixed plate
Inside.
5. high-precision coagulation cracking resistance detection device according to claim 4, it is characterised in that the concrete test
Slot includes side form, and bed die, end mould, support component and side form moving assembly and bed die moving assembly, the bottom of support component are solid
Fixed bed die is supported on the rack by bed die moving assembly on the rack, and LVDT displacement sensor is solid by connector and end mould
Fixed connection, the LVDT displacement sensor of the two sides of concrete test slot are separately fixed at the first guide post by connector and lead with second
The side of bed die is arranged in by the top of support component for the top of column, the side form, and the bottom of the end mould is arranged in bed die
End, the side wall of the end mould is arranged in the end of side form, and the telescopic head of described stepper motor one end is fixed on the outer of end mould
Side, to be stretched or be compressed with moved end mould, the width of the end mould is bigger than the width of the bed die, the side form, bottom
Mould and end mould are enclosed the concrete test slot that end is greater than middle part, are provided with connecting component between the end mould and side form,
The connecting component is arcuate structure, and the top of the support component is arranged on bed die, and the side form moving assembly setting exists
The outside of side form, and the side form moving assembly can drive side form to be moved forward and backward, bed die is arranged in the bed die moving assembly
Bottom, and the bed die moving assembly can drive bed die to move up and down；
Heating rod is provided in the connecting component；
The bottom of the end mould is additionally provided with top plate, and the surface of the top plate and the bottom surface for holding mould in the same plane, are pushed up
Board bottom portion is connected with the jack through pedestal, and the top plate is supported on susceptor surface by the very heavy head part through pedestal, institute
Susceptor surface can be ejected for top plate by stating jack.
6. high-precision coagulation cracking resistance detection device according to claim 5, it is characterised in that the end mould is 2,
The side form is 2, and the connecting component is 4, and 2 side forms are separately positioned on the two sides of bed die, a left side for 2 side forms
Hold it is adjacent with an end two sidewalls for mould respectively, adjacent with the left end of the 2 side forms two sidewalls for holding mould respectively with 2 interconnecting pieces
Part connection, the right end of 2 side forms is adjacent with the two sidewalls of another end mould respectively, the end mould adjacent with the right end of 2 side forms
Two sidewalls are connect with other 2 connecting components respectively, outside and the fixed company of stepper motor positioned at the end mould of 2 side form right ends
It connects；
The side form moving assembly includes the first side form fixing piece, the second side form fixing piece, the first rotary shaft, the second rotation
Axis, the first telescopic shaft, the second telescopic shaft, the first side form fixing piece and the second side form fixing piece are separately fixed at 2 side forms
Outside, first telescopic shaft is fixedly connected with the first side form fixing piece, one end of first telescopic shaft and the first rotation
Axis connection, the other end of first telescopic shaft stretch out the first side form fixing piece and are fixedly connected with one end of the second rotary shaft, the
The other end of two rotary shafts is connect with one end of the second telescopic shaft, and the other end of the second telescopic shaft is fixed with the second side form fixing piece
The position of connection, first telescopic shaft and the second rotation axis connection is located at below side form, and second rotary shaft is stretched with second
The position of contracting axis connection is located at below side form, and first rotary shaft can drive the rotation of the first telescopic shaft when rotating and front and back is moved
Dynamic, the first telescopic shaft can drive the second rotary shaft to rotate when rotating, and the second rotary shaft can be driven when rotating before and after the second telescopic shaft
It is mobile；
The bed die moving assembly includes bed die fixing piece, bed die rotary shaft, bed die telescopic shaft, and the bed die fixing piece is fixed
It is fixedly connected in one end of the bottom of bed die, the bed die telescopic shaft with bed die fixing piece, the other end of the bed die telescopic shaft
Axis connection is rotated with bed die, and bed die telescopic shaft can be driven to move up and down when bed die rotary shaft rotation；
The support component includes support plate, support column, pedestal, and support column and pedestal are 2, and the pedestal is fixed on branch
The top of dagger is provided with pulley on 2 pedestals, and pulley can rotate on pedestal, is respectively and fixedly provided with beside 2 pulleys and pedestal
Integrally formed baffle, the baffle are located on the outside of side form, and the both ends of the support plate are located at the pulley of 2 support bases
On, the support plate can be slided on pulley, 2 detents are formed between the baffle and support plate on 2 pedestals, 2 side forms
Bottom is located in 2 detents, and 2 side forms can move within the scope of detent.
7. high-precision coagulation cracking resistance detection device according to claim 3, it is characterised in that the measurement structure is also
It include reference test bar, magnet, pedestal, pedestal is placed on top cover, and strain gauge is arranged on the base, and the end of the strain gauge is logical
The top absorption for crossing magnet and reference test bar is fixed, and in the concrete in the lower part insertion concrete test slot of the reference test bar, is made
Reference test bar can be moved together with the deformation of concrete；Sliding rail, sliding block, supporting block, the cunning are additionally provided on the pedestal
Rail is fixed on the base, and the sliding block is flexibly connected on the slide rail, and the supporting block is fixed on sliding block, and the strain gauge is fixed
In supporting block, the strain gauge can be slided on the slide rail by sliding block.
8. high-precision coagulation cracking resistance detection device according to claim 7, it is characterised in that reference test bar is thermal expansion
The small material of coefficient, reference test bar, magnet, strain gauge, slide assemblies are 2, and the sliding rail of 2 slide assemblies is separately fixed at base
The left and right ends of seat, the sliding block of 2 slide assemblies are respectively and movably connected on the sliding rail of the left and right ends of pedestal, 2 Slide Groups
The supporting block of part is separately fixed on the sliding block of the left and right ends of pedestal, and 2 strain gauges are separately fixed at the left and right ends of pedestal
On supporting block on, 2 reference test bars are separately fixed at the end of 2 strain gauges by 2 magnet absorption；It is also set on the pedestal
It is equipped with motion bar, perforation compatible with motion bar is offered in the supporting block of the left and right ends of pedestal, the motion bar
Left end is vacantly arranged after the perforation of the supporting block of left end of the base, and the right end of the motion bar passes through the supporting block of right end of the base
Perforation after support be located at right end of the base reference test bar on, the motion bar can move in the perforation of supporting block.
9. high-precision coagulation cracking resistance detection device according to claim 5, it is characterised in that the concrete is flexible
Measuring mechanism further includes having Bit andits control to protect structure, and Bit andits control protection structure includes fixing seat, attachment base, described
Fixing seat is fixed on the rack, and contact bar is provided in the fixing seat, and the attachment base, which is fixed on, is connected with stepper motor
It holds on mould, stepper motor is connected by telescopic head with end mould, and stepper motor is circumscribed with power-off protecting circuit, and attachment base is led with end mould
Logical, fixing seat is connected with power-off protecting circuit, and the attachment base can be mobile with end mould, is provided on the attachment base two-way disconnected
Electric protective circuit breaker, the two-way cut-offing protecting switch are provided with activity space, and the contact bar is located in activity space, work as connection
Seat be moved to two-way cut-offing protecting switch one end or other end and contact bar contact, then attachment base by contact bar with admittedly
Reservation conducting, then attachment base, fixing seat, power-off protecting circuit, end mould, formation conductive loops, trigger power-off protection.
10. high-precision coagulation cracking resistance detection device according to claim 9, it is characterised in that in the middle part of the attachment base
The movable notch through attachment base is offered, activity space is located above movable notch, and two-way cut-offing protecting switch includes the
One fixed block, the first fixing head, first flap, the second fixed block, the second fixing head, second flap, first fixed block are solid
It is scheduled on the left side that attachment base is located at movable notch, first fixing head is fixed on the first fixed block one towards activity space
End, the first flap are fixed on the first fixing head towards on the inner wall of activity space；Second fixed block is fixed on connection
Seat is located at the right side of movable notch, and second fixing head is fixed on the one end of the second fixed block towards activity space, and described the
Two baffles are fixed on the second fixing head towards on the inner wall of activity space, are formed and are accommodated between the first flap and second flap
The activity space for contacting bar is then connected when the inside that attachment base is moved to first flap or second flap is contacted with bar is contacted
Seat is connected by first flap or second flap with fixing seat, then attachment base, fixing seat, power-off protecting circuit, end mould are formed
Conductive loops trigger power-off protection.
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| CN201910015692.XA CN109541188A (en) | 2019-01-08 | 2019-01-08 | A kind of high-precision coagulation cracking resistance detection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398014A (en) * | 2020-03-30 | 2020-07-10 | 河海大学 | Correction method for shear-type fracture test of magnetic suspension soil body |
| CN111579407A (en) * | 2020-06-27 | 2020-08-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Vertical experimental device for material abrasion resistance |
| CN111766146A (en) * | 2020-07-03 | 2020-10-13 | 浙江大学 | Method and device for testing and evaluating shrinkage cracking performance of solidified soil materials |
| CN113138614A (en) * | 2021-04-02 | 2021-07-20 | 华电西藏能源有限公司大古水电分公司 | Method for keeping constant environmental temperature of concrete constraint stress equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352876A (en) * | 2015-09-09 | 2016-02-24 | 中国水利水电科学研究院 | Real environment-based concrete cracking whole process test apparatus and method |
| CN105424494A (en) * | 2015-09-09 | 2016-03-23 | 中国水利水电科学研究院 | Concrete water cooling overall process testing device and method |
| CN205580953U (en) * | 2016-02-19 | 2016-09-14 | 中国水利水电科学研究院 | Concrete cracking overall process emulation testing machine |
| CN108956297A (en) * | 2018-07-20 | 2018-12-07 | 中国三峡建设管理有限公司 | A kind of method and equipment measuring concrete strength damage course under different constraint degrees |
| CN108951723A (en) * | 2018-07-20 | 2018-12-07 | 中国三峡建设管理有限公司 | A kind of indoor implementation method of the true constraint degree of large volume concrete structural |
| CN209570598U (en) * | 2019-01-08 | 2019-11-01 | 深圳前海砼源建设科技有限公司 | A kind of high-precision coagulation cracking resistance detection device |
-
2019
- 2019-01-08 CN CN201910015692.XA patent/CN109541188A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352876A (en) * | 2015-09-09 | 2016-02-24 | 中国水利水电科学研究院 | Real environment-based concrete cracking whole process test apparatus and method |
| CN105424494A (en) * | 2015-09-09 | 2016-03-23 | 中国水利水电科学研究院 | Concrete water cooling overall process testing device and method |
| CN205580953U (en) * | 2016-02-19 | 2016-09-14 | 中国水利水电科学研究院 | Concrete cracking overall process emulation testing machine |
| CN108956297A (en) * | 2018-07-20 | 2018-12-07 | 中国三峡建设管理有限公司 | A kind of method and equipment measuring concrete strength damage course under different constraint degrees |
| CN108951723A (en) * | 2018-07-20 | 2018-12-07 | 中国三峡建设管理有限公司 | A kind of indoor implementation method of the true constraint degree of large volume concrete structural |
| CN209570598U (en) * | 2019-01-08 | 2019-11-01 | 深圳前海砼源建设科技有限公司 | A kind of high-precision coagulation cracking resistance detection device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398014A (en) * | 2020-03-30 | 2020-07-10 | 河海大学 | Correction method for shear-type fracture test of magnetic suspension soil body |
| CN111398014B (en) * | 2020-03-30 | 2020-12-08 | 河海大学 | A correction method for magnetic suspension type soil shear fracture test |
| CN111579407A (en) * | 2020-06-27 | 2020-08-25 | 中国科学院、水利部成都山地灾害与环境研究所 | Vertical experimental device for material abrasion resistance |
| CN111766146A (en) * | 2020-07-03 | 2020-10-13 | 浙江大学 | Method and device for testing and evaluating shrinkage cracking performance of solidified soil materials |
| CN113138614A (en) * | 2021-04-02 | 2021-07-20 | 华电西藏能源有限公司大古水电分公司 | Method for keeping constant environmental temperature of concrete constraint stress equipment |
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