CESTiCC: A new sustainable additive for self-deicing asphalt mixture

AIDC project number: 1627


Xianmming Shi



  • Start Date: Sep 1, 2016
  • End Date: Aug 30, 2017

Project Documents

Project Final Report

Project Summary

Transportation agencies are increasingly relying on the use of chemical deicers for winter roadway safety and mobility. However, excessive use of such deicers (mainly chloride-based salts) poses potential risks to the natural environment, transportation infrastructure and motor vehicles. Previous research has indicated that a road wearing course paved with mixtures containing chloride-based deicing additives (Cl-DIA)  exhibited a higher level of self-ice-melting capacity compared to conventional asphalt mixtures. However, in addition to the concerns regarding long-term effectiveness, released chlorides can still cause pollution of the surrounding environment and corrosion in steel structure of vehicles and bridges. Therefore, there is a great need to develop a more sustainable deicing additive for asphalt mixture. The primary objectives of this project are to: (1) synthesize and characterize the new formate intercalated Zn-Al-Layered double hydroxide (ZnAl-FA-LDH); and (2) evaluate the self-deicing performance of the new LDH based additive and its effect on functional performance of asphalt mixture.