CN100516875C - Apparatus for testing cement-based material deformation under multiple environmental conditions - Google Patents
Apparatus for testing cement-based material deformation under multiple environmental conditions Download PDFInfo
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- CN100516875C CN100516875C CNB2006100181271A CN200610018127A CN100516875C CN 100516875 C CN100516875 C CN 100516875C CN B2006100181271 A CNB2006100181271 A CN B2006100181271A CN 200610018127 A CN200610018127 A CN 200610018127A CN 100516875 C CN100516875 C CN 100516875C
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Abstract
The invention relates to a gelatin backing material deformation measuring apparatus on the condition of multi-environment. It comprises an environment analog case (10), a table seat (14), a displacement sensor, a temperature sensor, a computer and a copper measuring head (34), which is characterized in that the displacement apparatus is positioned on the environment analog case (10); two displacement sensor measuring heads (25) are separately fixed on the brace (24) of the moving device whose left height can be adjusted and the brace (42) whose right height can be adjusted; the moving device comprises a motor (18), a guide screw (21), a bearing (24), a first bearing seat (17), a second bearing seat (23), a num (22), a right steel plate (15), a left steel plate (41), a brace (24) whose right height can be adjusted and a brace (42) whose right height can be adjusted.
Description
Technical field
The present invention relates to a kind of apparatus for testing cement-based material deformation under multiple environmental conditions.
Background technology
The permanance of xoncrete structure and serviceable life are the research focuses of present civil engineering field.And the main deterioration failure mode of xoncrete structure comprises steel bar corrosion, sulphate attack, freeze-thaw damage etc., main and Cl
-, SO
4 2-, Mg
2+, H
2Hazardous mediums such as O in concrete migration or permeate relevant.The formation of various microfractures and perforation in the concrete for the intrusion of these hazardous mediums provides express passway, have a strong impact on the permanance and the serviceable life of xoncrete structure.The formation of microfracture is except that minority is produced by load action in the concrete, the overwhelming majority causes because of the cubic deformation under the constraint condition, and volume of concrete distortion is an important sign of concrete anticracking sensitivity assessment, thereby the important topic in the research of volume of concrete distortion just becoming concrete durability.
The progress of current cement and concrete technology, cement mark and fineness are increasing, the raising of concrete strength and packing, concrete early-age shrinkage proportion is increasing, the application of cement-based material under different severe environments more and more widely in addition, therefore it is significant to study the early deformation performance of cement-based material under varying environment, but adopts existing apparatus that there are many weak points in such problem research, mainly shows as follows:
If 1 to measure test specimen quantity many, measure the length of time when long, required proving installation quantity is many, it is many to take up room, and many groups test specimen is carried out on-line testing cost height simultaneously.
2, partial devices can not be tested the cement-based material early deformation.
The result of test do not consider the influence of engineering-environment factor when 3, conventional device is tested, so can't correctly estimate the cubic deformation that is in cement-based material under the different operating environment yet.
Summary of the invention
At the drawback that existing testing tool exists, test block quantity for a long time, required proving installation quantity is many, it is many to take up room, the testing cost height is not considered environmental factor in the test process; The object of the present invention is to provide a kind of required proving installation quantity few, occupy little space, apparatus for testing cement-based material deformation under multiple environmental conditions that efficient is high.
To achieve these goals, technical scheme of the present invention is: a kind of apparatus for testing cement-based material deformation under multiple environmental conditions, it comprises environmental chamber 10, pedestal 14, displacement transducer, temperature sensor, computing machine, copper gauge head 34, pedestal 14 is positioned at environmental chamber 10, the bottom of pedestal 14 is positioned on the base plate 11 of environmental chamber 10, the top of pedestal 14 is respectively equipped with 2-40 little undercut 13, a 2-40 big undercut 16,2-40 test block is positioned on the pedestal 14, and the two ends of test block are embedded with copper gauge head 34; Displacement transducer comprises displacement transducer gauge head 25 and displacement transducer control module, pre-buried copper gauge head face on the laser beam vertical checkout part of displacement transducer gauge head 25, the displacement transducer gauge head is linked to each other by the input end of signal wire with the displacement transducer control module, and the output of displacement transducer control module is linked to each other with input end and computer by signal wire; Temperature sensor comprises temperature sensor gauge head 35 and temperature sensor control module, and temperature sensor gauge head 35 is embedded in the test block middle part; Temperature sensor gauge head 35 is linked to each other by the input end of signal wire with the temperature sensor control module, and the output of temperature sensor control module is linked to each other with input end and computer by signal wire; It is characterized in that: mobile device comprises motor 18, screw mandrel 21, bearing, clutch shaft bearing seat 17, second bearing seat 23, nut 22, right steel plate 15, left plate 41, right adjustable for height support 24, the adjustable for height support 42 in a left side, the output shaft of motor 18 is linked by the rear end of shaft coupling and screw mandrel 21, be rotary with nut 22 on the screw mandrel 21, the rearward end of screw mandrel 21 is linked to each other with clutch shaft bearing seat 17 by bearing, clutch shaft bearing seat 17 is fixedlyed connected with the casing of environmental chamber 10, the leading section of screw mandrel 21 is linked to each other with second bearing seat 23 by bearing, and second bearing seat 23 is fixedlyed connected with the casing of environmental chamber 10; The both sides of nut 22 are fixed with right steel plate 15, left plate 41 respectively, right steel plate 15, left plate 41 are positioned on same surface level and the axis, the bottom of the left part of left plate 41 is provided with left adjustable for height support 42, and the bottom of the right part of right steel plate 15 is provided with right adjustable for height support 24; Be fixed with displacement transducer gauge head 25 respectively on the right adjustable for height support 24 of mobile device, the left adjustable for height support 42.
The present invention adopts the casing of environmental chamber 10 to be provided with mobile device, and two displacement transducer gauge heads 25 are separately fixed on the right adjustable for height support 24 of mobile device, the left adjustable for height support 42; Positive and negative rotation by computer control electrodeless variable-speed motor 18, driving screw mandrel 21 rotates, thereby drive nut 22 is done back and forth movement on screw mandrel 21, drive two displacement transducer gauge heads 25 and do back and forth movement, thereby, only need two displacement transducer gauge heads 25 a plurality of (2-40) test block to be carried out on-line measurement with regard to realizing; And traditional be that each test block just needs a pair of displacement transducer gauge head when carrying out online detection; Therefore, the compared with prior art required proving installation quantity of the present invention few, occupy little space and can realize on-line testing; The present invention adopts the positive and negative rotation of motor 18, drives screw mandrel 21 and rotates, and drives two displacement transducer gauge heads 25 and does back and forth movement, can measure a plurality of test blocks simultaneously, and its measuring speed is fast, the efficient height.The present invention adopts the residing environment of environmental chamber 10 model engineerings, the result of test can consider the influence (as: temperature, humidity and atmospheric environment) of engineering-environment factor when testing, so can correctly estimate the cubic deformation that is in cement-based material under the different operating environment.
The present invention adopts early deformation test mould 38, can test the cement-based material early deformation.The present invention adopts the left column 26 of left rail 20, right guide rail, band roller, the right column of band roller, plays support, equilibrium activity.By the gap between sleeve and pretension measure elimination nut and the screw mandrel, improve transmission accuracy.
The present invention can carry out the engineering-environment simulation on-line monitoring of various distortion down to many groups test block, especially can carry out the early deformation monitoring, and operation is convenient, and test result reliability is strong.
Description of drawings
Fig. 1 is the structural representation of environmental chamber 10 of the present invention
Fig. 2 is the A-A cut-open view of Fig. 1
Fig. 3 is a vertical view of the present invention
Fig. 4 is the B-B cut-open view of Fig. 3
Fig. 5 is the C-C cut-open view (annotate: nut 22 is mobile among the figure) of Fig. 3
Fig. 6 is right steel plate 15 of the present invention, left plate 41 and nut 22 fit structure synoptic diagram
Fig. 7 is a pedestal cut-open view of the present invention
Fig. 8 is the assembly drawing of early deformation test mould 38 of the present invention
Fig. 9 is the structural representation of copper gauge head 34 of the present invention
Figure 10 is cement-based material early deformation test detail drawing of the present invention
Figure 11 is a cement-based material later stage deformation test detail drawing of the present invention
Figure 12 is the connection diagram of sensor groups B of the present invention (displacement transducer and temperature sensor)
Among the figure: 1-outer case, 2-internal box, 3-refrigerator pipes, 4-gas-holder, the 5-draft tube, 6-gas outlet, 7-exhaust solenoid valve, 8-simulation box chamber, the 9-data line, 10-environmental chamber, 11-base plate, 12-indium steel par, the little undercut of 13-, 14-pedestal, the right steel plate of 15-, the big undercut of 16-, 17-clutch shaft bearing seat, 18-motor, 19-sleeve, 20-left rail, the 21-screw mandrel, 22-nut, 23-second bearing seat, the right adjustable for height support of 24-, 25-displacement transducer gauge head, 26-column, 27-mounting hole, the long side template of 28-, 29-copper gauge head hole, the short side template of 30-, the 31-end template, 32-bolt, 33-connecting screw rod, 34-copper gauge head, 35-temperature sensor gauge head, 36-laser instrument hole, the 37-CCD photodetector, 38-early deformation test mould, 39-cement-based material, the 40-concrete sample, 41-left plate, the adjustable for height support in a 42-left side.
Embodiment
As Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 9, a kind of apparatus for testing cement-based material deformation under multiple environmental conditions, it comprises environmental chamber 10, pedestal 14, displacement transducer, temperature sensor, computing machine, copper gauge head 34, pedestal 14, displacement transducer gauge head 25, temperature sensor gauge head 35 is positioned at the simulation box chamber 8 of environmental chamber 10, the bottom of pedestal 14 is positioned on the steel base plate 11 of environmental chamber 10, the top of pedestal 14 is respectively equipped with 12 little undercuts 13,12 big undercuts 16,12 test blocks are positioned on the pedestal 14, and the two ends of test block are embedded with copper gauge head 34.Temperature sensor comprises temperature sensor gauge head 35 and temperature sensor control module, and temperature sensor gauge head 35 has the copper sheath, when cement-based material is built, is embedded in test block middle part (each all pre-buried temperature sensor gauge head 35 in test block middle part); Temperature sensor gauge head 35 is linked to each other by the input end of signal wire with the temperature sensor control module, and the output of temperature sensor control module is linked to each other with input end and computer by signal wire.Displacement transducer adopts existing non-contact laser displacement transducer, the non-contact laser displacement transducer comprises displacement transducer gauge head 25 and displacement transducer control module, displacement transducer gauge head 25 carries out anti-corrosion measure, and displacement transducer gauge head 25 comprises CCD photodetector 37, laser instrument hole 36; Pre-buried copper gauge head face on the laser beam vertical checkout part of displacement transducer gauge head 25, displacement transducer gauge head 25 is linked to each other by the input end of signal wire with the displacement transducer control module, and the output of displacement transducer control module is linked to each other with input end and computer by signal wire.The casing of environmental chamber 10 is provided with mobile device, and two displacement transducer gauge heads 25 are separately fixed on the right adjustable for height support 24 of mobile device, the left adjustable for height support 42.Described mobile device comprises motor 18, screw mandrel 21, bearing, clutch shaft bearing seat 17, second bearing seat 23, nut 22, right steel plate 15, left plate 41, right adjustable for height support 24, the adjustable for height support 42 in a left side, motor 18 is the electrodeless variable-speed motor, the output shaft of motor 18 is linked by the rear end of shaft coupling and screw mandrel 21, be rotary with nut 22 on the screw mandrel 21, the rearward end of screw mandrel 21 is linked to each other with clutch shaft bearing seat 17 by bearing, clutch shaft bearing seat 17 is fixedlyed connected with the casing of environmental chamber 10, the leading section of screw mandrel 21 is linked to each other with second bearing seat 23 by bearing, and second bearing seat 23 is fixedlyed connected with the casing of environmental chamber 10; There are right steel plate 15, left plate 41 in the both sides of nut 22 fixing (welding) respectively, right steel plate 15, left plate 41 are positioned on same surface level and the axis, the bottom of the left part of left plate 41 is provided with left adjustable for height support 42 (fixing by the mounting hole on the left plate 41), and the bottom of the right part of right steel plate 15 is provided with right adjustable for height support 24 (fixing by the mounting hole on the right steel plate 15 27).Little undercut 13, big undercut 16, test block also can be 2 or 40.
The bottom of the left end of described left plate 41 is provided with the left column 26 of band roller, and left column 26 is positioned at the left side of left adjustable for height support 42, and the bottom of the right-hand member of right steel plate 15 is provided with the right column of band roller, and right column is positioned at right adjustable for height support 24 right sides; Left rail 20, right guide rail lay respectively at the dual-side of pedestal 14 and fixedly connected with base plate 11, and the lower end roller of left column 26, right column contacts with left rail 20, right guide rail respectively.
Described screw mandrel 21 is positioned at sleeve 19, the left and right sides of sleeve 19 is respectively equipped with the steel plate chute, right steel plate 15, left plate 41 pass the steel plate chute of left and right sides respectively, and the rear end of sleeve 19 links to each other with clutch shaft bearing seat 17, and the front end of sleeve 19 links to each other with second bearing seat 23.
The front end left and right sides of described pedestal 14 is respectively equipped with the adjustable height bridge, and the two ends of the indium steel par 12 that the humiture distortion is little link to each other with the adjustable bridge of both heights respectively.
Described test block is mortar specimen, concrete sample, the band mould test specimen that two ends are embedded with copper gauge head 34.Band mould test specimen is made of early deformation test mould 38, cement-based material 39, cement-based material is built in early deformation test mould 38, and the pre-buried copper gauge head 34 in two ends, the copper gauge head hole 29 of early deformation test mould 38 is passed in the test end of copper gauge head 34, is exposed to outside the copper gauge head hole 29; Band mould test specimen is fixing by bolt and pedestal 14.For the later stage deformation test of cement-based material, [mortar specimen then embeds in the little undercut 13] in 40 big undercuts 16 of embedding of concrete sample can be tested, the cement-based material two ends of mortar specimen or concrete sample are embedded with copper gauge head 34.
The length and width height of described little undercut 13 is of a size of 41 * 161 * 1mm, and described big undercut 16 length and width height are of a size of 101 * 516 * 1mm.
As shown in Figure 8, described early deformation test mould 38 adopts the Teflon plate to make [in order to reduce the frictional resistance of cement-based material 39 and early deformation test mould 38], mainly by two long side templates 28, two short side templates 30, end template 31, bolt 32, connecting screw rod 33 is formed, the diagonal line center of two short side templates 30 is provided with copper gauge head hole 29, the diameter in copper gauge head hole 29 is ф 6.5mm, two short side templates 30 are between two long side template 28 two ends, two long side templates 28 are fixedly connected by connecting screw rod 33, two long side templates 28, two short side templates 30 are shelved on the end template 31, and are connected with end template 31 by bolt 32.
As shown in Figure 1 and Figure 2, environmental chamber 10 comprises casing, sensor groups A, Thermal Control Element, humidistat, gas control element, environmental simulation control module, casing is made of outer case 1, internal box 2, internal box 2 is positioned at outer case 1, outer case 1, internal box 2 are provided with the door for turnover, use filled thermal insulation materials between outer case 1 and the internal box 2; Sensor groups A is positioned at the simulation box chamber 8 of internal box 2, and sensor groups A is made up of temperature, humidity and gas concentration sensor, and sensor groups A is linked to each other with the environmental simulation control module by data line 9; Thermal Control Element is made up of refrigeration unit, well heater, and well heater is positioned at simulation box chamber 8, and refrigeration unit is connected with simulation box chamber 8 by refrigerator pipes 3, and refrigerator pipes 3 is positioned at the top of simulation box chamber 8; The gas control element mainly is made up of gas-holder 4, gas filtration clarifier, gas-holder 4 is connected with simulation box chamber 8 by draft tube 5, draft tube 5 is provided with the air inlet solenoid valve, and the gas filtration clarifier is connected with simulation box chamber 8 by gas outlet 6, and gas outlet 6 is provided with exhaust solenoid valve 7; Be provided with humidistat in the simulation box chamber 8, well heater, humidistat are positioned at the bottom of simulation box chamber 8; Air inlet solenoid valve, exhaust solenoid valve 7 are linked to each other by the input end of lead with the environmental simulation control module respectively, and the output of environmental simulation control module is linked to each other with input end and computer by signal wire.
Principle of work: the parameters such as temperature, humidity and gas concentration in the simulation box chamber 8 are transported to the environmental simulation control module by sensor groups A, the environmental simulation control module starts or stops Thermal Control Element, humidistat, gas control element automatically according to the environmental parameter of actual measurement, thereby makes simulation box chamber 8 environmental parameters reach the needed numerical value of test.Environmental chamber 10 can be simulated by the residing environment of engineering (as: temperature, humidity and atmospheric environment).
Measure the position of laser image spot according to the CCD photodetector of non-contact laser displacement transducer by the displacement transducer control module, calculate the angle of chief ray, thereby calculate the distance between measured workpiece surface (test block) illuminated laser spot and the displacement transducer gauge head, i.e. displacement signal.Displacement between the pre-buried copper gauge head end face of test block and the end face of displacement transducer gauge head 25 is represented by displacement signal, can measure displacement between the both ends of the surface of copper gauge head and displacement transducer gauge head 25 in the random time, the variable quantity of the numerical value sum of these two displacements is the deformation values of cement-based material (test block).Detect the change in displacement of the both ends of the surface of indium steel par 12 and displacement transducer gauge head 25 simultaneously, eliminate the error that gearing brings.
The cement-based material deformation test adopts early deformation test and two kinds of methods of later stage deformation test to carry out, and for the early deformation test of cement-based material, adopts the test of band mould test specimen.Before the test, pre-buried copper gauge head 34 end faces of laser beam vertical checkout part of non-contact laser displacement transducer have been debugged, and the spacing of pre-buried copper gauge head 34 end faces of the lasing area of non-contact laser displacement transducer and test block is in non-contact laser displacement sensor scope, and the center line absolute altitude of the copper gauge head 34 on the test block is identical with the center line absolute altitude in the laser instrument hole 36 of non-contact laser displacement transducer.Measure the displacement between the end face of displacement transducer gauge head 25 of testee end face (pre-buried copper gauge head) and non-contact laser displacement transducer with the CCD photodetector 37 of non-contact laser displacement transducer, represent by displacement signal then.Temperature sensor gauge head 35 has the copper sheath, when cement-based material is built, is embedded in the test block middle part.
The test of cement-based material early deformation, because early concrete does not also have enough intensity, the method that traditional measurement is shunk is no longer suitable.Therefore the test of band mould is adopted in the early deformation test, and the early deformation test mould 38 among the present invention adopts special rich wheel plate to process.Because special rich wheel plate has minimum friction factor in solid material, can effectively alleviate the constraint of die surface to early concrete, and avoid the damage of form removal to early concrete, as shown in figure 10.Cement-based material later stage deformation test, as shown in figure 11.
As shown in figure 12, by the environmental simulation control module, according to the environment in the Testing requirement control casing, measure the position of laser image spot according to the CCD photodetector of non-contact laser displacement transducer by the displacement transducer control module, calculate the angle of chief ray, thereby calculate the distance between measured workpiece surface (test block) illuminated laser spot and the displacement transducer gauge head, i.e. displacement signal.Gather the temperature signal of each temperature sensor gauge head by multichannel temperature sensor control module.Each module links to each other with computing machine, and analysis of experimental data and evaluation work are mainly finished in the excel electrical form.Thereby realized that a pair of displacement transducer carries out the engineering-environment simulation in good time on-line monitoring of various distortion down to many groups test specimen simultaneously.
Basic parameter of the present invention comprises: total measurement (volume) is about 2.5 cubic metres, and temperature controlling range is 0-70 ℃, humidity range of control 20-95%RH, and the gas concentration scope is 0-20%, the resolution of test is 0.001mm, data acquisition time 25ms.
Claims (5)
1. apparatus for testing cement-based material deformation under multiple environmental conditions, it comprises environmental chamber (10), pedestal (14), displacement transducer, temperature sensor, computing machine, copper gauge head (34), pedestal (14) is positioned at environmental chamber (10), the bottom of pedestal (14) is positioned on the base plate (11) of environmental chamber (10), the top of pedestal (14) is respectively equipped with 2-40 little undercut (13), a 2-40 big undercut (16), 2-40 test block is positioned on the pedestal (14), and the two ends of test block are embedded with copper gauge head (34); Displacement transducer comprises displacement transducer gauge head (25) and displacement transducer control module, pre-buried copper gauge head face on the laser beam vertical checkout part of displacement transducer gauge head (25), the displacement transducer gauge head is linked to each other by the input end of signal wire with the displacement transducer control module, and the output of displacement transducer control module is linked to each other with input end and computer by signal wire; Temperature sensor comprises temperature sensor gauge head (35) and temperature sensor control module, and temperature sensor gauge head (35) is embedded in the test block middle part; Temperature sensor gauge head (35) is linked to each other by the input end of signal wire with the temperature sensor control module, and the output of temperature sensor control module is linked to each other with input end and computer by signal wire; It is characterized in that: mobile device comprises motor (18), screw mandrel (21), bearing, clutch shaft bearing seat (17), second bearing seat (23), nut (22), right steel plate (15), left plate (41), right adjustable for height support (24), a left side adjustable for height support (42), the output shaft of motor (18) is linked by the rear end of shaft coupling and screw mandrel (21), be rotary with nut (22) on the screw mandrel (21), the rearward end of screw mandrel (21) is linked to each other with clutch shaft bearing seat (17) by bearing, clutch shaft bearing seat (17) is fixedlyed connected with the casing of environmental chamber (10), the leading section of screw mandrel (21) is linked to each other with second bearing seat (23) by bearing, and second bearing seat (23) is fixedlyed connected with the casing of environmental chamber (10); The both sides of nut (22) are fixed with right steel plate (15), left plate (41) respectively, right steel plate (15), left plate (41) are positioned on same surface level and the axis, the bottom of the left part of left plate (41) is provided with left adjustable for height support (42), and the bottom of the right part of right steel plate (15) is provided with right adjustable for height support (24); Be fixed with displacement transducer gauge head (25) respectively on the right adjustable for height support (24) of mobile device, the left adjustable for height support (42).
2. a kind of apparatus for testing cement-based material deformation under multiple environmental conditions according to claim 1, it is characterized in that: the bottom of the left end of described left plate (41) is provided with the left column (26) of band roller, left column (26) is positioned at the left side of left adjustable for height support, the bottom of the right-hand member of right steel plate (15) is provided with the right column of band roller, and right column is positioned at right adjustable for height support (24) right side; Left rail (20), right guide rail lay respectively at the dual-side of pedestal (14) and fixedly connected with base plate (11), and the lower end roller of left column (26), right column contacts with left rail (20), right guide rail respectively.
3. a kind of apparatus for testing cement-based material deformation under multiple environmental conditions according to claim 1, it is characterized in that: described screw mandrel (21) is positioned at sleeve (19), the left and right sides of sleeve (19) is respectively equipped with the steel plate chute, right steel plate (15), left plate (41) pass the steel plate chute of left and right sides respectively, the rear end of sleeve (19) links to each other with clutch shaft bearing seat (17), and the front end of sleeve (19) links to each other with second bearing seat (23).
4. a kind of apparatus for testing cement-based material deformation under multiple environmental conditions according to claim 1, it is characterized in that: described test block is band mould test specimen, band mould test specimen is made of early deformation test mould (38), cement-based material (39), cement-based material is built in early deformation test mould (38), and the pre-buried copper gauge heads in two ends (34), the copper gauge head hole (29) of early deformation test mould (38) is passed in the test end of copper gauge head (34), and is exposed to outside the copper gauge head hole (29); Band mould test specimen is fixing by bolt and pedestal (14).
5. a kind of apparatus for testing cement-based material deformation under multiple environmental conditions according to claim 4, it is characterized in that: described early deformation test mould (38) is mainly by two long side templates (28), two short side templates (30), end template (31), bolt (32), connecting screw rod (33) is formed, the diagonal line center of two short side templates (30) is provided with copper gauge head hole (29), two short side templates (30) are positioned between two long side templates (28) two ends, two long side templates (28) are fixedly connected by connecting screw rod (33), two long side templates (28), two short side templates (30) are shelved on the end template (31), and are fixedlyed connected with end template (31) by bolt (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100181271A CN100516875C (en) | 2006-01-10 | 2006-01-10 | Apparatus for testing cement-based material deformation under multiple environmental conditions |
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| CNB2006100181271A CN100516875C (en) | 2006-01-10 | 2006-01-10 | Apparatus for testing cement-based material deformation under multiple environmental conditions |
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| CN1804624A CN1804624A (en) | 2006-07-19 |
| CN100516875C true CN100516875C (en) | 2009-07-22 |
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Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102221602A (en) * | 2010-04-15 | 2011-10-19 | 深圳泛华工程集团有限公司 | Tester for concrete free deformation |
| CN103033286B (en) * | 2012-12-11 | 2015-08-05 | 广州供电局有限公司 | The ambient temperature detection device of transformer temperature rise test |
| CN103162604B (en) * | 2013-02-04 | 2016-07-06 | 长沙理工大学 | Cubic deformation real-time test device and method after cement-base composite material hardening |
| CN103837670A (en) * | 2013-12-27 | 2014-06-04 | 河海大学 | Method and apparatus for measuring early-stage autogenous shrinkage of cement-based material |
| CN104375537A (en) * | 2014-11-10 | 2015-02-25 | 陈绪褚 | Intelligent temperature control concrete heating formwork construction device |
| CN105674906A (en) * | 2016-01-26 | 2016-06-15 | 同济大学 | Shrinkage deformation tester for road material at full age and using method of tester |
| CN105690260B (en) * | 2016-04-05 | 2017-08-29 | 泉州装备制造研究所 | The continuous rubbing down process on-line detecting system of building stone based on displacement sensing technology |
| CN107064471A (en) * | 2016-12-19 | 2017-08-18 | 河海大学 | Cement-based material volume deformation test method and device under a kind of temperature action |
| CN108534739A (en) * | 2017-03-04 | 2018-09-14 | 兰州交通大学 | A kind of concrete shrinkage full-automatic wireless acquisition system |
| CN107014346B (en) * | 2017-05-31 | 2023-02-21 | 济南大学 | Device suitable for deformation after cement solidifies is tested |
| CN109521187B (en) * | 2018-12-04 | 2024-04-02 | 中建西部建设湖南有限公司 | Device and method for detecting self-shrinkage of cement paste |
| CN113484158B (en) * | 2021-09-08 | 2021-11-05 | 南通诚利钢结构工程有限公司 | Multi-environment anti-deformation detection device for steel structure |
| CN113819854B (en) * | 2021-11-24 | 2022-02-08 | 中国飞机强度研究所 | Device and method for measuring deformation of aircraft skin in extreme cold weather test |
| CN114895005A (en) * | 2022-04-22 | 2022-08-12 | 河南城建学院 | 3D printed concrete constructability test method |
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2006
- 2006-01-10 CN CNB2006100181271A patent/CN100516875C/en not_active Expired - Fee Related
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| CN1804624A (en) | 2006-07-19 |
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