Abstract: In order to prepare the pavement concrete with freeze-deicing salt resistance, the freeze-deicing salt resistant agent (ASN) was researched and developed. According to the CDF test method, the freeze-deicing salt resistance of the pavement concrete with ASN agent was studied. The results showed that the scaled mass of ordinary performance concrete decreased by 56%, the dynamic modulus of elasticity loss rate decreased by 68% and the scaled mass of high performance concrete decreased by 75%, the dynamic modulus of elasticity loss rate decreased by 42% after 56 cycles due to the freeze-deicing salt resistant agent added into the concrete. Scaling mark on the concrete surface was hardly detected. SEM demonstrated that microstructure of concrete was dense and micro-cracks did not occur. So the ASN agent can greatly improve the pavement concrete in freeze-deicing salt resistance.
