Salt Release Characteristics and Road Performance of Salt-containing Ceramsite Concrete

To explore the salt release law of salt-containing ceramsite concrete and the influence of different content of salt-containing ceramsite on the pavement performance of concrete. Through conductivity analysis and related mechanical tests, the mount of salt release from the specimen surface and the pavement performance of concrete with different content of salt-containing ceramsite were analyzed. Results show that the polymer modified cement paste has good salt slow-release performance. The erosion of water and the wear of the coating material are significantly affecting on the salt storage capacity of salt-containing ceramsite. The salt-containing ceramsite concrete has better anti-freezing performance than that of ordinary concrete. When the replacement ratio of salt-containing ceramsite to aggregate is 100% and the temperature of environment is -2 ℃, the total freezing time of the specimen surface is 4.67 times longer than that of the ordinary concrete. The replacement of aggregate with salt-containing ceramsite has certain influence on the mechanical properties and wear resistance of the concrete.