The Influence of Mineral Salt Interface Modifier to Pavement Rubber Concrete Strength

摘要

The experiment researched the influence of mineral salt to pavement rubber aggregate and the interface shear strength of cement matrix, which also discussed the mechanism of action about mineral salt interface modifier. Research showed: mineral salt has a big effect on the compressive strength of rubber concrete but nothing to splitting strength. The longer time of rubber aggregate was soaked by mineral salt, the more apparent of modification effect. As modifier, the optimal usage of C_aCl_2 is 10% of rubber powder's weight. Rubber powder after treatment fits the mixing process of cement paste encapsulating aggregate method. Organic salt isn't much suitable for being modifier.