Testing device for damage concrete stress-strain whole curve caused by environment corrosion

A technology for environmental corrosion and testing equipment, applied to measuring equipment, using stable tension/pressure to test material strength, weather resistance/light resistance/corrosion resistance, etc., can solve the problem that the full stress-strain curve cannot be measured, and achieve high Elastic deformation ability, simple production and easy operation

Inactive Publication Date: 2016-08-31
NANJING UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of damage concrete stress-strain full curve testing device caused by environmental corrosion, which solves the problem that the stress-strain full curve of damaged concrete caused by environmental corrosion cannot be measured

Method used

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  • Testing device for damage concrete stress-strain whole curve caused by environment corrosion
  • Testing device for damage concrete stress-strain whole curve caused by environment corrosion
  • Testing device for damage concrete stress-strain whole curve caused by environment corrosion

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Embodiment 1

[0033] The stress-strain full curve test device for damaged concrete caused by environmental corrosion of the invention is used to measure the stress-strain full curve of a calcium dissolution damaged concrete specimen in a soft water erosion environment.

[0034] combine Figure 1 to Figure 5 , a full stress-strain curve testing device for damaged concrete caused by environmental corrosion, including a rigid element 1, an upper platen 2, a lower platen 3, a height adjustment device 4, a pressure sensor 5, a backing plate 6, a fixture 7 and a laser displacement sensor 8 . The rigid element 1 is arranged between the upper pressing plate 2 and the lower pressing plate 3 for increasing the rigidity of the overall structure. The center of the lower platen 3 is provided with a through hole, and the height adjusting device 4 is located in the center through hole of the lower platen 3 , and the diameter of the through hole is larger than the bottom diameter of the height adjusting d...

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Abstract

The invention discloses a testing device for a damage concrete stress-strain whole curve caused by environment corrosion. The device comprises a rigid element, an upper pressing plate, a lower pressing plate, a height adjusting device, a pressure sensor, a cushion plate, a clamp and a laser displacement sensor. In the test process, a pressure tester exerts loads on the upper pressing plate, the rigid element and a concrete test piece bear force together to improve the rigidity of the tester, and therefore he deformation of a falling section of the test piece can stably develop, no fragile damage can happen, a dynamic strain instrument records pressure and test loads and deformation information output by the laser displacement sensor, and the damage concrete stress-strain whole curve caused by environment corrosion can be obtained through post-processing of a computer. The damage concrete stress-strain whole curve caused by corrosion can be accurately measured, and technical support is provided for studying the performance degradation law of concrete under the corrosion environment.

Description

technical field [0001] The invention belongs to civil engineering measuring equipment, in particular to a stress-strain full curve testing device for damaged concrete caused by environmental corrosion. Background technique [0002] In recent years, with the development of my country's coastal areas and western regions, especially the safety and durability of concrete structures in harsh environments for a long time has become one of the applied basic theoretical research topics that need to be solved urgently in the process of my country's infrastructure construction. It is of great significance for the durability design and service life evaluation of concrete structures to study the change law of the full stress-strain curve of damaged concrete caused by environmental corrosion. [0003] The current concrete stress-strain full curve test method mainly increases the stiffness of the testing machine by adding rigid components such as springs, steel pipes, and steel columns, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02G01N3/08G01N17/00
CPCG01N3/02G01N3/08G01N17/00
Inventor 左晓宝王佳林何绍丽殷光吉马强汤玉娟
Owner NANJING UNIV OF SCI & TECH
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