ABSTRACT
Due to environmental pollution caused by traditional chloride-based deicers, sodium salts were introduced as environment-friendly deicers and its performance is highly evaluated in recent years. However, filed investigation showed that sodium-based deicers are less friendly to asphalt pavement than traditional chloride-based deicers. This paper evaluated effects of deicers on asphalt-aggregate adhesion and asphalt mixture cohesion through laboratory water immersion test and freeze-thaw cycling test, stripping percent of asphalt-coated aggregates and Cantabro loss of asphalt mixture samples were adopted to characterize the damage. The results showed that invasion of deicers promoted both reduction of asphalt-aggregate adhesion and loss of asphalt mixture cohesion, and sodium acetate was more harmful to asphalt mixture than chloride-based deicers. Moreover, Cantabro test was found to have good potential for evaluation of cohesion loss caused by deicer frost.
