Device and method for testing chloride corrosion of reinforced concrete member under continuous load

A reinforced concrete and testing device technology, applied in the direction of applying stable tension/compression to test the strength of materials, can solve the problems of difficulty in reaching the normal load level of in-service structural members, limited load level, etc., to achieve a simple structure and basically consistent load , the effect of convenient operation

Active Publication Date: 2014-11-05
HOHAI UNIV
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Problems solved by technology

However, the load level imposed by the counterweight method is limited. For some components with high bearing capacity, it is difficult to achieve the normal load level of the structural components in service by using this method.

Method used

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  • Device and method for testing chloride corrosion of reinforced concrete member under continuous load
  • Device and method for testing chloride corrosion of reinforced concrete member under continuous load
  • Device and method for testing chloride corrosion of reinforced concrete member under continuous load

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Embodiment Construction

[0039] The present invention will be further described below in conjunction with the accompanying drawings.

[0040] like Figure 1-Figure 5 Shown, a kind of test device of chlorine salt corrosion reinforced concrete member under continuous load, comprises loading frame, loading driving device, and described loading frame comprises lower beam 3, upper beam 12, test beam support frame 7, reaction beam 5, The loading frame screw 6, the nut 1 and the side support 11, the upper beam 12, the test beam support frame 7 and the lower beam 3 are sequentially perforated and connected by the loading frame screw 6, and the upper and lower beams are connected by nuts 1 at the openings of the upper and lower beams. The crossbeam is fixed on the loading frame screw 6, and the positioning nut 1 is set at the opening of the lower end of the test beam support 7, and the lining plate 2 is set between all the nuts 1, the crossbeam and the support, and the reaction beam 5 is supported by the cross...

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Abstract

The invention provides a device and method for testing chloride corrosion of a reinforced concrete member under a continuous load. The device comprises a continuous load loading device, a rapid chloride corrosion device and a measurement and control device. A continuous load is applied by a loading frame and a drive device, a frame body is filled with a chloride solution and is fixed at the upper-middle part of a test beam in a sealing manner, air is continuously injected in the chloride solution by adopting an air pump, and direct current is introduced into reinforced steel bars of the test beam to implement the rapid corrosion. Relevant data acquirers, electrochemical testers and output equipment which are controlled through a single chip microcomputer in a unified manner are integrated in the main control box, the continuous load is measured in real time, and periodically corrected to a target level, corrosion behaviors of a corroded member are periodically tested, and data are acquired, displayed, stored, printed and output in real time. The device is capable of effectively simulating an actual corrosion working condition of the on-active service reinforced concrete structure member under the coupling effect of a chloride environment and the load, and provides a scientific basis for evaluating the durability of engineering structures under chloride environments such as sea and salt lakes.

Description

technical field [0001] The invention relates to a test device and method for chloride salt corrosion of reinforced concrete components under continuous load, and belongs to the technical field of testing the corrosion degree of reinforced concrete. Background technique [0002] my country's coastline is long, and saline soil areas are widely distributed. A large number of reinforced concrete (RC) structures are subjected to severe chloride salt environment erosion, which leads to corrosion of steel bars inside the structure and a decrease in durability. In the normal service stage, reinforced concrete members are always subjected to the coupling effect of load and chloride salt erosion in chloride-salt environments such as oceans and salt lakes. Corrosion of steel bars inside members leads to loss of steel bar section and decrease in member stiffness. At the same time, the coupling effect of the load causes the steel bar to bear the tensile stress and may lead to concrete cr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08
Inventor 侯利军陈达何良德黄挺冯兴国刘子涵
Owner HOHAI UNIV
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