CN114594239B - Cement-based material shrinkage stress detection device - Google Patents
Cement-based material shrinkage stress detection device Download PDFInfo
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- CN114594239B CN114594239B CN202210220104.8A CN202210220104A CN114594239B CN 114594239 B CN114594239 B CN 114594239B CN 202210220104 A CN202210220104 A CN 202210220104A CN 114594239 B CN114594239 B CN 114594239B
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- 238000001514 detection method Methods 0.000 title claims abstract description 79
- 239000004568 cement Substances 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 title claims abstract description 49
- 230000005540 biological transmission Effects 0.000 claims description 27
- 238000006243 chemical reaction Methods 0.000 claims description 23
- 230000008602 contraction Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Ceramic Engineering (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a cement-based material shrinkage stress detection device, which comprises: the device comprises a base, a supporting block, a detection cylinder, a first detection device, a supporting block and a second detection device, wherein the base bears the detection device and is provided with the supporting block fixing detection device; the bottom of the detection cylinder is detachably fixed on the supporting block; the first detection device is arranged in the detection cylinder and is positioned at the upper half part; four supporting blocks are distributed in a square shape, correspond to the supporting blocks and are detachably fixed on the upper part of the detection cylinder; the second detection device is fixed on the base and is detachably connected with the center of the bottom of the detection cylinder. Compared with the prior art, the multi-stage stress detection device is arranged in the invention, and the shrinkage stress of the cement-based material is detected and compared in different modes, so that the loss caused by single data error is avoided, and more accurate stress data is obtained.
Description
Technical Field
The invention relates to the technical field of civil engineering, in particular to a cement-based material shrinkage stress detection device.
Background
The cement-based material can undergo volume changes, both autogenous and caused by external factors such as temperature, humidity and load, such as the volume changes caused by self-drying action of hydration reaction, water evaporation and the like during the development of concrete strength, which are called concrete shrinkage. Because the concrete volume deformation detection precision requirement is high, the self-shrinkage stress detection difficulty is high, the efficiency is low, the accuracy is poor, the lack of a test device for rapidly evaluating the shrinkage stress of the concrete before construction is caused, the civil engineering construction quality of the application of the high-performance cement-based material is seriously influenced, and the rapid solution is urgently needed. Therefore, it is necessary to provide a device for detecting shrinkage stress of cement-based materials, so as to solve the problems in the prior art.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: a cement-based material shrinkage stress detection device, comprising:
the base is used for bearing the detection device and is provided with a support block fixing detection device;
the bottom of the detection cylinder is detachably fixed on the support block;
the first detection device is arranged in the detection cylinder and is positioned at the upper half part;
four supporting blocks are distributed in a square shape, correspond to the supporting blocks and are detachably fixed on the upper part of the detection cylinder;
the second detection device is fixed on the base and is detachably connected with the center of the bottom of the detection cylinder.
Further, preferably, the detection cartridge includes:
the cylinder is detachably fixed on the supporting block, and under the action of the supporting block, the bottom of the cylinder is suspended above the base, so that a certain space is provided for the arrangement of the second detection device;
the pressing plate is arranged at the top of the cylinder and is slidably connected with the inner wall of the cylinder, and slides to the bottom of the cylinder along with shrinkage of the cement-based material;
the bottom plate is fixed at the bottom of the cylinder and is used for bearing cement-based materials and connecting the detection cylinder and the second detection device;
the positioning nails are annularly distributed and are respectively fixed on the surfaces of the pressing plate and the bottom plate facing the inside of the cylinder, when the cement-based material fills the cylinder, the positioning nails are tightly attached to the cement-based material, and when the cement-based material is gradually solidified and contracted, the pressing plate moves along with the cement-based material under the action of the positioning nails, and meanwhile, the first detection device and the second detection device exert force;
the inner shaft is detachably fixed at the center of the pressing plate, penetrates through the bottom plate and corresponds to the center position of the base, and when the pressing plate is displaced, the inner shaft follows the pressing plate to displace, so that the second detection device is driven to perform detection work;
the sleeve shaft is detachably fixed at the center of the bottom plate and is in sliding connection with the inner shaft, so that resistance generated by direct contact with the cement-based material when the inner shaft is displaced is reduced.
Further, preferably, the pressing plate is provided with a through hole corresponding to the first detection device, and when the pressing plate is displaced under the action of shrinkage stress, the first detection device passes through the through hole on the pressing plate, so that the influence of external force on the shrinkage stress is avoided.
Further, preferably, the length of the sleeve shaft is two thirds of the length of the inner shaft, the inner shaft moves in the sleeve shaft and the base, the length of the sleeve shaft does not affect the normal displacement of the pressing plate while the sleeve shaft provides a moving carrier for the inner shaft, and when the displacement distance of the inner shaft is overlarge, the bottom of the inner shaft passes through the base.
Further, preferably, the first detecting device includes:
the pressure ring is fixedly arranged in the cylinder and is positioned in the middle of the cylinder;
the sensors are distributed in a ring shape, the sides of the sensors are fixed on the inner wall of the upper half part of the cylinder, the bottom of the sensors are fixed on the pressure ring, and pressure data from the pressure ring are transmitted;
the sensing displays are distributed in a ring shape, correspond to the sensors, are fixed on the inner walls of the sensors and the cylinder, correspond to the through holes on the pressing plate, and analyze data transmitted by the sensors.
Further, as a preferable mode, the pressure ring inner ring is provided with a freely telescopic pressure strain gauge which is controlled by the sensor display, when the cement-based material is filled, the pressure strain gauge is in a contracted state, after the cement-based material is filled, the pressure strain gauge stretches out and contacts with the cement-based material, and in the process of gradually solidifying and contracting the cement-based material, the pressure strain gauge receives contraction stress from the cement-based material and transmits the contraction stress to the sensor display through the sensor.
Further, preferably, the second detecting device includes:
the screw rod is positioned between the bottom plate and the base, is fixed on the inner shaft and moves along with the inner shaft;
the conversion gear is meshed with the screw rod, and drives the conversion gear to rotate in the moving process of the screw rod so as to convert linear motion into circular motion;
and the detector is fixed on the base, is rotationally connected with the conversion gear through a rotating shaft and detects the rotating force of the conversion gear.
Further, preferably, the detector includes:
the shell is fixed on the base;
the torsion sensor is fixed in the shell, and one surface of the torsion sensor, which is far away from the conversion gear, is used for detecting torsion from the conversion gear;
the center toothed ring is rotatably arranged on the torsion sensor, and the inner ring is fixedly connected with the rotating shaft of the conversion gear to transmit the rotating force of the conversion gear into the detector;
the transmission racks are annularly distributed and are meshed with the central toothed ring, and move under the drive of the central toothed ring to transmit torsion to the torsion sensor;
the transmission slideway is linear and corresponds to the transmission rack, and is arranged on the torsion sensor and used as a transmission medium between the transmission rack and the torsion sensor.
Further, as an optimization, a cylindrical sliding block is arranged at the bottom of the transmission rack and is in sliding connection with the transmission slideway, when the screw rod is driven by the inner shaft to move downwards, the conversion gear rotates anticlockwise, and then the central toothed ring is driven to rotate anticlockwise, and meanwhile, the transmission rack is driven to move on the transmission slideway under the action of the sliding block.
Further, preferably, the transmission slideway is arranged on a strain gauge of the torsion sensor, and when the transmission rack moves on the transmission slideway, force is applied to the strain gauge of the torsion sensor, so that stress data is obtained.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the stress born by the same horizontal position in the shrinkage process of the cement-based material is detected through the arrangement of a plurality of sensors and pressure strain gauges in the first detection device, so that more accurate stress data are obtained; through the setting of the second detection device, the whole shrinkage distance of the cement-based material is taken as a standard for detection, the linear distance is converted into the circumferential distance, and the stress data are obtained under the action of the torsion sensor.
In the invention, the shrinkage stress of the cement-based material is rapidly and accurately detected by combining the internal detection and the external detection.
Drawings
FIG. 1 is a schematic diagram showing the overall structure of a cement-based material shrinkage stress detecting device;
FIG. 2 is a schematic diagram of a sensor display in a cement-based material shrinkage stress detection device;
FIG. 3 is a schematic diagram of the structure of a pressure ring in a device for detecting shrinkage stress of a cement-based material;
FIG. 4 is a schematic diagram of a second device for detecting shrinkage stress of a cement-based material;
FIG. 5 is a schematic diagram of a detector structure in a cement-based material shrinkage stress detection device;
in the figure: 1. a base; 2. a support block; 3. a detection cylinder; 4. a first detection device; 5. a supporting block; 6. a second detection device; 31. a cylinder; 32. a pressing plate; 33. a bottom plate; 34. positioning nails; 35. an inner shaft; 36. a sleeve shaft; 41. a pressure ring; 42. a sensor; 43. a sensor display; 61. a screw; 62. a conversion gear; 63. a detector; 412. a pressure strain gage; 631. a housing; 632. a torsion sensor; 633. a central toothed ring; 634. a drive rack; 635. and a transmission slideway.
Detailed Description
Referring to fig. 1 to 5, in an embodiment of the present invention, a shrinkage stress detection device for cement-based materials includes:
the base 1 is used for bearing the detection device and is provided with a support block 2 for fixing the detection device;
the bottom of the detection cylinder 3 is detachably fixed on the support block 2;
a first detecting device 4, which is arranged in the detecting cylinder 3 and is positioned at the upper half part;
four supporting blocks 5 are distributed in a square shape, correspond to the supporting blocks 2 and are detachably fixed on the upper part of the detection cylinder 3;
the second detection device 6 is fixed on the base 1 and is detachably connected with the center of the bottom of the detection cylinder 3.
In this embodiment, the detecting cylinder 3 includes:
the cylinder 31 is detachably fixed on the supporting block 2, and under the action of the supporting block 2, the bottom of the cylinder 31 is suspended above the base 1, so that a certain space is provided for the arrangement of the second detection device 6;
the pressing plate 32 is arranged at the top of the cylinder 31, is slidably connected with the inner wall of the cylinder 31, and slides to the bottom of the cylinder 31 along with shrinkage of the cement-based material;
a bottom plate 33 fixed at the bottom of the cylinder 31 and carrying cement-based material, connecting the detection cylinder 3 and the second detection device 6;
the positioning nails 34 are annularly distributed and are respectively fixed on the surfaces of the pressing plate 32 and the bottom plate 33 facing the inside of the cylinder 31, when the cement-based material fills the cylinder 31, the positioning nails 34 are tightly attached to the cement-based material, and when the cement-based material is gradually solidified and contracted, the pressing plate 32 moves along with the cement-based material under the action of the positioning nails 34, and meanwhile, the first detection device 4 and the second detection device 6 exert force;
the inner shaft 35 is detachably fixed at the center of the pressing plate 32 and penetrates through the bottom plate 33 to correspond to the center position of the base 1, and when the pressing plate 32 is displaced, the inner shaft 35 follows the pressing plate 32 to displace, so that the second detection device 6 is driven to perform detection work;
the sleeve shaft 36 is detachably fixed at the center of the bottom plate 33 and is in sliding connection with the inner shaft 35, so that resistance generated by direct contact with cement-based materials when the inner shaft 35 is displaced is reduced.
In this embodiment, the pressing plate 32 is provided with a through hole corresponding to the first detecting device 4, and when the pressing plate 32 is displaced under the action of the shrinkage stress, the first detecting device 4 passes through the through hole on the pressing plate 32, so as to avoid the influence of external force on the shrinkage stress.
In this embodiment, the length of the sleeve shaft 36 is two-thirds of the length of the inner shaft 35, the inner shaft 35 moves in the sleeve shaft 36 and the base 1, the sleeve shaft 36 provides a moving carrier for the inner shaft 35, the length of the sleeve shaft 36 does not affect the normal displacement of the pressing plate 32, and when the displacement distance of the inner shaft 35 is too large, the bottom of the inner shaft 35 passes through the base 1.
In this embodiment, the first detecting device 4 includes:
a pressure ring 41 fixedly disposed in the cylinder 31 and located in the middle of the cylinder 31;
the sensors 42 are distributed in a ring shape, the sides of the sensors are fixed on the inner wall of the upper half part of the cylinder 31, the bottom of the sensors are fixed on the pressure ring 41, and pressure data from the pressure ring 41 are transmitted;
the sensing displays 43 are distributed in a ring shape, are corresponding to the sensors 42, are fixed on the inner walls of the sensors 42 and the cylinder 31, correspond to the through holes on the pressing plate 32, and analyze data transmitted by the sensors 42.
In this embodiment, the inner ring of the pressure ring 41 is provided with a freely retractable pressure strain gauge 412, which is controlled by the sensor display 43, and the pressure strain gauge 412 is in a contracted state when the cement-based material is filled, and after the cement-based material is filled, the pressure strain gauge 412 extends out to contact with the cement-based material, and in the process of gradually solidifying and contracting the cement-based material, the pressure strain gauge 412 receives the contraction stress from the cement-based material and transmits the contraction stress to the sensor display 43 through the sensor 42.
In this embodiment, the second detecting device 6 includes:
a screw 61, which is located between the bottom plate 33 and the base 1, is fixed to the inner shaft 35, and moves along with the inner shaft 35;
the conversion gear 62 is meshed with the screw 61, and drives the conversion gear 62 to rotate in the moving process of the screw 61 so as to convert linear motion into circular motion;
the detector 63 is fixed to the base 1, and is rotatably connected to the conversion gear 62 via a rotation shaft, and detects the rotation force of the conversion gear 62.
In this embodiment, the detector 63 includes:
a housing 631 fixed to the base 1;
a torque sensor 632 fixed inside the housing 631 and detecting a torque from the conversion gear 62 on a surface away from the conversion gear 62;
a center toothed ring 633 rotatably provided on the torsion sensor 632, the inner ring being fixedly connected to the rotation shaft of the conversion gear 62, and transmitting the rotation force of the conversion gear 62 into the detector 63;
the transmission racks 634 are annularly distributed and are meshed with the central toothed ring 633, and move under the drive of the central toothed ring 633 to transmit torsion to the torsion sensor 632;
the transmission slideway 635 is linear, corresponds to the transmission rack 634, and is arranged on the torsion sensor 632 and serves as a transmission medium between the transmission rack 634 and the torsion sensor 632.
In this embodiment, a cylindrical sliding block is disposed at the bottom of the driving rack 634 and is slidably connected with the driving slideway 635, when the screw 61 is driven by the inner shaft 35 to move downward, the conversion gear 62 rotates counterclockwise, so as to drive the central toothed ring 633 to rotate counterclockwise, and meanwhile, under the action of the sliding block, the driving rack 634 is driven to move on the driving slideway 635.
In this embodiment, the transmission slideway 635 is disposed on the strain gauge of the torsion sensor 632, and when the transmission rack 634 moves on the transmission slideway 635, a force is applied to the strain gauge of the torsion sensor 632, so as to obtain stress data.
In specific implementation, the cement-based material to be tested is injected into the detection cylinder 3, the pressing plate 32 is attached to the top of the cement-based material, the pressure strain gauge 412 of the pressure ring 41 stretches out under the action of the sensing display 43, initial readings of the first detection device 4 and the second detection device 6 are recorded, after the self-contraction of the cement-based material starts, readings of the sensing display 43 and the torsion sensor 632 start to increase, readings under different ages are recorded, the initial readings are subtracted, and the cross-sectional area divided by the concrete is the self-contraction stress of the cement-based material, and final contraction stress data is obtained through the comparative analysis of the two groups of data.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (3)
1. A cement-based material shrinkage stress detection device, characterized in that: comprising the following steps:
the base (1) is used for bearing the detection device and is provided with a support block (2) for fixing the detection device;
the bottom of the detection cylinder (3) is detachably fixed on the support block (2);
the first detection device (4) is arranged in the detection cylinder (3) and is positioned at the upper half part;
four supporting blocks (5) are distributed in a square shape, correspond to the supporting blocks (2) and are detachably fixed on the upper part of the detection cylinder (3);
the second detection device (6) is fixed on the base (1) and is detachably connected with the center of the bottom of the detection cylinder (3);
the detection cartridge (3) comprises:
a cylinder (31) detachably fixed on the support block (2);
the pressing plate (32) is arranged at the top of the cylinder (31) and is slidably connected with the inner wall of the cylinder (31);
a bottom plate (33) fixed to the bottom of the cylinder (31);
a plurality of positioning nails (34) are annularly distributed and respectively fixed on the surfaces of the pressing plate (32) and the bottom plate (33) facing the inside of the cylinder (31);
the inner shaft (35) is detachably fixed at the center of the pressing plate (32) and penetrates through the bottom plate (33) to correspond to the center of the base (1);
the sleeve shaft (36) is detachably fixed at the center of the bottom plate (33) and is in sliding connection with the inner shaft (35);
the first detection device (4) comprises:
the pressure ring (41) is fixedly arranged in the cylinder (31) and is positioned in the middle of the cylinder (31);
the sensors (42) are distributed in a ring shape, the sides of the sensors are fixed on the inner wall of the upper half part of the cylinder (31), and the bottom of the sensors is fixed on the pressure ring (41);
four sensing displays (43) are distributed annularly and correspond to the sensors (42), and are fixed on the inner walls of the sensors (42) and the cylinder (31) and correspond to through holes on the pressing plate (32);
the inner ring of the pressure ring (41) is provided with a freely telescopic pressure strain gauge (412) which is controlled by a sensing display (43);
the second detection device (6) comprises:
a screw (61) positioned between the bottom plate (33) and the base (1) and fixed on the inner shaft (35);
a conversion gear (62) which is engaged with the screw (61);
the detector (63) is fixed on the base (1) and is rotationally connected with the conversion gear (62) through a rotating shaft;
the detector (63) includes:
a housing 631 fixed to the base 1;
a torque sensor (632) fixed inside the casing (631) at a surface far from the conversion gear (62);
a center toothed ring (633) rotatably arranged on the torque sensor (632), the inner ring being fixedly connected with the rotating shaft of the conversion gear (62);
a plurality of transmission racks (634) which are annularly distributed and meshed with the central toothed ring (633);
the transmission slideway (635) is linear and is arranged on the torsion sensor (632) corresponding to the transmission rack (634); a cylindrical sliding block is arranged at the bottom of the transmission rack (634) and is in sliding connection with the transmission slideway (635);
the transmission slide (635) is disposed on a strain gauge of the torsion sensor (632).
2. The cement-based material shrinkage stress detection device according to claim 1, wherein: the pressing plate (32) is provided with a through hole corresponding to the first detection device (4).
3. The cement-based material shrinkage stress detection device according to claim 1, wherein: the length of the sleeve shaft (36) is two thirds of the length of the inner shaft (35), and the inner shaft (35) moves in the sleeve shaft (36) and the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210220104.8A CN114594239B (en) | 2022-03-08 | 2022-03-08 | Cement-based material shrinkage stress detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210220104.8A CN114594239B (en) | 2022-03-08 | 2022-03-08 | Cement-based material shrinkage stress detection device |
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| CN114594239A CN114594239A (en) | 2022-06-07 |
| CN114594239B true CN114594239B (en) | 2023-08-08 |
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Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3440887A1 (en) * | 1984-11-09 | 1986-05-15 | Klaus-Dieter Dipl.-Ing. 7000 Stuttgart Gabor | Iteration method of determining physical measured values in materials under applied stress and iteration instrument for carrying out the method |
| CN1763525A (en) * | 2005-10-12 | 2006-04-26 | 中国建筑材料科学研究院 | Method and apparatus for measuring rapid drying shrinkage of cement-based material |
| CN101221164A (en) * | 2008-01-16 | 2008-07-16 | 哈尔滨工业大学 | Cement concrete self-restriction contraction stress test approach |
| CN101769916A (en) * | 2010-01-25 | 2010-07-07 | 江苏博特新材料有限公司 | Method for testing expansion/contraction stress of cement-based material |
| CN102539245A (en) * | 2011-11-29 | 2012-07-04 | 河海大学 | Portable rapid testing device for strength of concrete test block |
| CN202362210U (en) * | 2011-11-29 | 2012-08-01 | 河海大学 | Strength detector for concrete test block |
| KR20120131006A (en) * | 2011-05-24 | 2012-12-04 | 고려대학교 산학협력단 | Experimental Device and Method of restrained shrinkage of Concrete |
| CN202735169U (en) * | 2012-08-03 | 2013-02-13 | 中建商品混凝土有限公司 | Device for testing shrinkage of concrete filled steel tubular under effect of vertical load |
| CN202870086U (en) * | 2012-10-24 | 2013-04-10 | 中建商品混凝土有限公司 | Device for testing cement base binding material self-shrinkage and relative humidity without gravity factor |
| 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 |
| KR101841142B1 (en) * | 2017-03-15 | 2018-03-22 | 효림산업 주식회사 | Torque test apparatus |
| CN108613884A (en) * | 2018-04-11 | 2018-10-02 | 浙江大学 | A kind of ring shear apparatus being contemplated that constant stiffness constant volume Chang Yingli |
| CN108761048A (en) * | 2018-05-30 | 2018-11-06 | 重庆大学 | A kind of complete set of equipments for detecting concrete shrinkage stress |
| CN109100497A (en) * | 2018-07-30 | 2018-12-28 | 广东浪淘砂新型材料有限公司 | A kind of test method of Dry Shrinkage of Cement Mortar |
| CN110887958A (en) * | 2019-12-27 | 2020-03-17 | 哈尔滨工业大学 | Cement-based material shrinkage stress detection device and full-temperature detection method thereof |
| JP2020056768A (en) * | 2018-09-28 | 2020-04-09 | 太平洋セメント株式会社 | Stress monitoring sensor and stress monitoring method |
| CN210533678U (en) * | 2019-06-18 | 2020-05-15 | 深圳市铱程机电设备有限公司 | Torsion test frame |
| CN211292917U (en) * | 2019-12-27 | 2020-08-18 | 哈尔滨工业大学 | A universal device for concrete detection |
| CN213455915U (en) * | 2020-11-27 | 2021-06-15 | 浙江亨骏自动化设备有限公司 | Novel pressure sensor |
| CN113049791A (en) * | 2021-02-08 | 2021-06-29 | 同济大学 | Plastic shrinkage cracking and reducing method for cement mortar |
| CN213874742U (en) * | 2020-12-29 | 2021-08-03 | 苑大欣 | Fine adjustment type concrete shrinkage stress detection device |
| CN214883946U (en) * | 2021-07-30 | 2021-11-26 | 广州越监工程质量安全检测中心有限公司 | Foundation pit displacement monitoring device |
| CN114061471A (en) * | 2021-08-31 | 2022-02-18 | 河海大学 | Monitoring system and monitoring method for early-age deformation of slide rail type cement-based material |
-
2022
- 2022-03-08 CN CN202210220104.8A patent/CN114594239B/en active Active
Patent Citations (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3440887A1 (en) * | 1984-11-09 | 1986-05-15 | Klaus-Dieter Dipl.-Ing. 7000 Stuttgart Gabor | Iteration method of determining physical measured values in materials under applied stress and iteration instrument for carrying out the method |
| CN1763525A (en) * | 2005-10-12 | 2006-04-26 | 中国建筑材料科学研究院 | Method and apparatus for measuring rapid drying shrinkage of cement-based material |
| CN101221164A (en) * | 2008-01-16 | 2008-07-16 | 哈尔滨工业大学 | Cement concrete self-restriction contraction stress test approach |
| CN101769916A (en) * | 2010-01-25 | 2010-07-07 | 江苏博特新材料有限公司 | Method for testing expansion/contraction stress of cement-based material |
| KR20120131006A (en) * | 2011-05-24 | 2012-12-04 | 고려대학교 산학협력단 | Experimental Device and Method of restrained shrinkage of Concrete |
| CN102539245A (en) * | 2011-11-29 | 2012-07-04 | 河海大学 | Portable rapid testing device for strength of concrete test block |
| CN202362210U (en) * | 2011-11-29 | 2012-08-01 | 河海大学 | Strength detector for concrete test block |
| CN202735169U (en) * | 2012-08-03 | 2013-02-13 | 中建商品混凝土有限公司 | Device for testing shrinkage of concrete filled steel tubular under effect of vertical load |
| CN202870086U (en) * | 2012-10-24 | 2013-04-10 | 中建商品混凝土有限公司 | Device for testing cement base binding material self-shrinkage and relative humidity without gravity factor |
| 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 |
| KR101841142B1 (en) * | 2017-03-15 | 2018-03-22 | 효림산업 주식회사 | Torque test apparatus |
| CN108613884A (en) * | 2018-04-11 | 2018-10-02 | 浙江大学 | A kind of ring shear apparatus being contemplated that constant stiffness constant volume Chang Yingli |
| CN108761048A (en) * | 2018-05-30 | 2018-11-06 | 重庆大学 | A kind of complete set of equipments for detecting concrete shrinkage stress |
| CN109100497A (en) * | 2018-07-30 | 2018-12-28 | 广东浪淘砂新型材料有限公司 | A kind of test method of Dry Shrinkage of Cement Mortar |
| JP2020056768A (en) * | 2018-09-28 | 2020-04-09 | 太平洋セメント株式会社 | Stress monitoring sensor and stress monitoring method |
| CN210533678U (en) * | 2019-06-18 | 2020-05-15 | 深圳市铱程机电设备有限公司 | Torsion test frame |
| CN110887958A (en) * | 2019-12-27 | 2020-03-17 | 哈尔滨工业大学 | Cement-based material shrinkage stress detection device and full-temperature detection method thereof |
| CN211292917U (en) * | 2019-12-27 | 2020-08-18 | 哈尔滨工业大学 | A universal device for concrete detection |
| CN213455915U (en) * | 2020-11-27 | 2021-06-15 | 浙江亨骏自动化设备有限公司 | Novel pressure sensor |
| CN213874742U (en) * | 2020-12-29 | 2021-08-03 | 苑大欣 | Fine adjustment type concrete shrinkage stress detection device |
| CN113049791A (en) * | 2021-02-08 | 2021-06-29 | 同济大学 | Plastic shrinkage cracking and reducing method for cement mortar |
| CN214883946U (en) * | 2021-07-30 | 2021-11-26 | 广州越监工程质量安全检测中心有限公司 | Foundation pit displacement monitoring device |
| CN114061471A (en) * | 2021-08-31 | 2022-02-18 | 河海大学 | Monitoring system and monitoring method for early-age deformation of slide rail type cement-based material |
Non-Patent Citations (1)
| Title |
|---|
| 水泥混凝土热应变及干缩应变的现场测试;户桂灵;韩文扬;余四新;;公路交通科技(06);第65-70页 * |
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