In order to investigate the effect of chloride erosion on mechanical properties of basalt fiber concrete and chloride erosion behavior in concrete.Salt spray erosion test was carried out with compressive strength,splitting tensile strength and chloride ion deposition as the characterization means,and the chloride ion diffusion coefficient under different erosion ages was calculated according to Fick's second law.The results show that the strength of concrete increases first and then decreases in the process of chloride erosion.Compared with ordinary concrete,basalt fiber corroded by chloride salt can effectively improve the compressive and splitting tensile strength of concrete and reduce the deterioration rate of concrete.The chloride ion content of basalt fiber concrete is lower than that of ordinary concrete at the same depth and erosion age.In addition,the chloride diffusion coefficient decreases with the increase of erosion age.The chloride diffusion coefficient of basalt fiber concrete is lower than that of ordinary concrete at the same age.
关键词
玄武岩纤维/力学性能/氯离子含量/Fick第二定律/氯离子扩散系数
Key words
basalt fiber/mechanical properties/chloride ion content/Fick's second law/chloride ion diffusion coefficient
万方数据