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Experimental Research on Resistance to Frost of Rubberized Concrete

According to mixture proportions design, rubber concrete specimens were produced, which were used for test of resistance to frost. In this study, different grain size and different content rubber were mixed in Portland cement concrete. Quick freeze-thaw test was carried to rubberized concrete. The research shows that appropriate proportional fine aggregate replaced by the discarded tires powder and grain can improve concrete resistance to frost, although concrete compressive strength, flexural strength and dynamic elasticity modulus decrease with increasing of rubber content. The improving effect of rubber powder is better than rubber grain. Furthermore, it is demonstrated that the dynamic elasticity modulus obtained by Non-destructive testing can commendably evaluate the frost resistance of rubberized concrete.