Test device and method for chloride salt corrosion of reinforced concrete members under continuous load

Abstract

The invention provides a test device and a test method for chlorine salt corrosion of reinforced concrete components under continuous load. The device includes a continuous load loading device, a chlorine salt rapid corrosion device and a measurement and control device. Apply continuous load through the loading frame and driving device, fill the frame body sealed and fixed on the upper part of the test beam with chlorine salt solution, use the air pump to continuously inject air into the chlorine salt solution, and conduct rapid corrosion on the test beam steel bar through direct current . The main control box integrates relevant data acquisition instruments, electrochemical testers and output devices, and is controlled by a single-chip microcomputer to measure the continuous load in real time and regularly correct it to the target level, regularly test the corrosion behavior of the corroded components, collect, display, store and Print out the data. The invention can effectively simulate the actual corrosion working conditions of in-service reinforced concrete structural members under the coupling action of chloride salt environment and load, and provide scientific basis for durability evaluation of engineering structures in chloride salt environments such as oceans 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...

AI Technical Summary

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.

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