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Cement-based material continuous load loading device for durability test

A cement-based material, durability test technology, applied in the direction of measuring device, analyzing material, using stable tension/pressure test material strength, etc. In order to improve the accuracy, small size and constant force

Pending Publication Date: 2020-01-17
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual engineering structure is always under load, and the continuous load will produce microcracks, which will make the impermeability of cement-based materials worse, thus affecting the durability of cement-based materials
The sulfate attack of the cement-based material test block under the no-load state cannot truly reflect the state of the cement-based material being eroded by the corrosive medium during the service stage

Method used

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  • Cement-based material continuous load loading device for durability test
  • Cement-based material continuous load loading device for durability test
  • Cement-based material continuous load loading device for durability test

Examples

Experimental program
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Effect test

Embodiment 1

[0050] This embodiment discloses a continuous load loading device for cement-based materials for durability tests, including a reaction force frame, a pressure sensor 1, a jack 2 and a tension and load holding device.

[0051] see figure 1 , the reaction force frame includes a top plate 3, a bottom plate 4 and four screws I5, and the top plate 3 is located directly above the bottom plate 4. Both the top plate 3 and the bottom plate 4 are rectangular plates arranged horizontally, and the two rectangular plates are provided with four through holes, and the four through holes are respectively located on the four corners of the rectangular plate. The four screws I5 pass through the four through holes of the top plate 3 and the four through holes of the bottom plate 4, the top plate 3 is fixed on the upper end of each screw I5 by nuts 6, and the bottom plate 4 is fixed on each screw by nuts 6 The lower end of I5, thus forming a hollow frame body. The nut 6 is a locknut.

[0052]...

Embodiment 2

[0066] This embodiment discloses a continuous load loading device for cement-based materials for durability tests, including a reaction frame, a pressure sensor 1, a jack 2 and a pressure and load-bearing device.

[0067] see figure 2 , the reaction force frame includes a top plate 3, a bottom plate 4 and four screws I5, and the top plate 3 is located directly above the bottom plate 4. Both the top plate 3 and the bottom plate 4 are rectangular plates arranged horizontally, and the two rectangular plates are provided with four through holes, and the four through holes are respectively located on the four corners of the rectangular plate. The four screws I5 pass through the four through holes of the top plate 3 and the four through holes of the bottom plate 4, the top plate 3 is fixed on the upper end of each screw I5 by nuts 6, and the bottom plate 4 is fixed on each screw by nuts 6 The lower end of I5, thus forming a hollow frame body. The nut 6 is a lock nut.

[0068] A ...

Embodiment 3

[0081] This embodiment discloses a continuous load loading device for cement-based materials for durability tests, including a reaction force frame, a pressure sensor 1, a jack 2 and a tension and load holding device.

[0082] see figure 1 , the reaction force frame includes a top plate 3, a bottom plate 4 and four screws I5, and the top plate 3 is located directly above the bottom plate 4. Both the top plate 3 and the bottom plate 4 are rectangular plates arranged horizontally, and the two rectangular plates are provided with four through holes, and the four through holes are respectively located on the four corners of the rectangular plate. The four screws I5 pass through the four through holes of the top plate 3 and the four through holes of the bottom plate 4, the top plate 3 is fixed on the upper end of each screw I5 by nuts 6, and the bottom plate 4 is fixed on each screw by nuts 6 The lower end of I5, thus forming a hollow frame body.

[0083] A pressure sensor 1 is c...

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Abstract

The invention discloses a cement-based material continuous load loading device for durability test. The cement-based material continuous load loading device includes a reaction force frame, a pressuresensor and a jack, the reaction force frame is internally provided with a tension load-holding device or a stress load-holding device, cement-based material test blocks are clamped and fixed into both the tension load-holding device and the stress load-holding device, and the pressure sensor controls the jack to apply a certain pressure to the tension load-holding device or the stress load-holding device; the tension load-holding device converts pressure into a constant tensile force and transmits the constant tensile force to the cement-based material test blocks, and the stress load-holdingdevice converts pressure into a constant pressure and transmits the constant pressure to the cement-based material test blocks; and the tension load-holding device or the stress load-holding device are both internally provided with steel rebar meters, the steel rebar meters regularly tests the stress of the cement-based material test blocks, when the loss of the stress is detected, the cement-based material test blocks can be reloaded by the jack. The stress situation of a cement-based material in the actual situation can be accurately simulated, and the accuracy of the test is improved.

Description

technical field [0001] The invention relates to a sustained load loading device for cement-based materials, in particular to a one-way loading device for a cement-based material test block used in durability tests. Background technique [0002] At present, most of the durability tests of cement-based material test blocks are eroded by corrosive media under no-load conditions. The actual engineering structure is always under load, and the continuous load will produce microcracks, which will make the impermeability of cement-based materials worse, thereby affecting the durability of cement-based materials. The sulfate attack of the cement-based material test block under the no-load state cannot truly reflect the state of the cement-based material being eroded by the corrosive medium during the service stage. Therefore, it is of great significance to establish a multi-factor cable coupling test method that simulates the real environment-stress state, and to study the degradati...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/04
CPCG01N3/08G01N3/04
Inventor 胡少伟李文昊汪旭
Owner CHONGQING UNIV
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