Material design and performance analysis of the anti-ice and antiskid wear layer on pavement

摘要

A design method for an anti-ice and antiskid wear layer on pavement is presented in this paper. A kind of bonding material with excellent properties has been developed that can maintain a good bonding ability in high and low temperature environments and has good UV aging resistance. Porous high-strength shale aggregates are used to replace portions of stone, and the functional characteristics of the ice inhibition of the wear layer are realized by soaking in saturated salt water. The results show that after adding ceramsite, the freezing point of pavement can be reduced by approximately 5 degrees C at most and the ice melting rate can be increased by approximately 30%. After continuous soaking for ten days, salt can still be precipitated from the aggregate, which can inhibit the formation of an ice film to a certain extent. As the proportion of ceramsite increases, the polishing resistance of the pavement increases. Under conditions of flooding and freezing, the BPN of the aggregate mixed with ceramsite is approximately 50% higher than that of andesite aggregate. The wear layer can provide a good anti-ice and antiskid performance, which is helpful for traffic safety under wintry conditions. (C) 2021 Elsevier Ltd. All rights reserved.