Performance Test on Resistance to Chloride Ion Corrosion in Concrete Structure Added with Special Protection

Abstract

Through accelerated chloride corrosion test in the concrete structure, the chloride ion concentrations at different depths of the concrete added with special protection and without special protection at different corrosion times are tested, and the effects of special protection on the diffusion coefficient of chloride ion and chloride ion concentration on the surface of the concrete are studied. The reduction coefficient of the chloride ion diffusion coefficient and the reduction coefficient of the surface chlorine ion concentration are introduced to carry out performance test on the effects of the special protection. And the test results show that: The special protection can reduce the diffusion coefficient of the chloride ions in the concrete by 31.3% and lower the chloride ion concentration on the surface of the concrete by 22.67%. And the special protection can improve the service life of the concrete structure in the environment of chloride ion corrosion to a relatively large extent.