Title: Performance test on resistance to chloride ion corrosion in concrete structure added with special protection in road and bridge engineering
Authors: Guizhen Wang
Addresses: Chongqing Vocational Institute of Engineering, Chongqing, 402260, China
Abstract: In view of the intrusion of seawater into concrete structures, a large number of harmful substances, especially chloride ions, can be brought in, which can significantly shorten the actual service life of concrete structures, resulting in serious waste of resources. In this paper, the chloride ion accelerated corrosion test on the concrete structure of road and bridge engineering is carried out to test the chloride ion concentration in different depths of concrete with special protection and without special protection at different corrosion times, and the effect of special protection is studied to study the diffusion coefficient and chloride ion concentration on the concrete surface of road and bridge engineering. The test results show that the diffusion coefficient of chloride ion in concrete can be reduced by 31.3% and the concentration of chloride ion on concrete surface can be reduced by 22.67% by special protective measures.
Keywords: concrete structure; chloride ion; special protection; performance test.
International Journal of Critical Infrastructures, 2021 Vol.17 No.2, pp.133 - 147
Received: 27 Dec 2019
Accepted: 09 Mar 2020
Published online: 05 Aug 2021 *