Evaluation of stray current corrosion resistance of concrete in metro construction

Abstract

By simulation tests of concrete specimens in saturated Ca(OH)₂ solution and seawater, and based on micro mechanism analysis, this paper evaluates the stray current corrosion resistance of concrete specimens of different mixture ratios, and reaches a conclusion that the capability to resist stray current corrosion of optimally designed concrete mixed with good-quality fly ash and powdered slag is increased by over 5 times more than the reference concrete with the same water to binder ratio, and the service life of such kind of concrete meets the basic requirement of a metro project.

Keywords

stray current corrosion / simulation test / metro project