Chloride migration in PPF concrete under dry-wet cycle

摘要

In order to study the Cl⁻ penetration depth in polypropylene fiber concrete with different volume, indoor artificial method was used to simulate dry-wet cycle, and the concentrations of AgNO3 solution indicator on the Cl⁻ concentration at the color change boundary of the specimens was investigated. The results indicated that the chloride penetration depth increased as the cycles of dry-wet was increased, adding 0.1% PPF into concrete have the prefect resistance of Cl⁻ penetration, the corner has the largest Cl⁻ penetration area.