Experimental Study of Asphalt Mixture with Acetate Anti-Icing Filler

This study evaluated the effects of the types (MFL and acetate anti-icing filler) and the replacement rate of anti-icing additives on the performance of asphalt mixtures. Additionally, the road performance as well as ice inhibition capacity between environmental (acetate anti-icing filler) and conventional (MFL) anti-icing materials were compared. The equivalent volume displacement method was applied to determine the amount of anti-icing filler in asphalt mixture. In this paper, the high-temperature stability, low-temperature bending properties, water stability, ice inhibition properties and anti-icing persistence of the mixture were investigated in the laboratory. The results show that the ice inhibitor has negative effects on the rutting resistance, crack resistance and moisture sensitivity of the asphalt mixture. Additionally, the adverse effects become more obvious as the replacement rate increases. There was a similar trend in the mixtures with three kinds of ice inhibition filler in general. The tests also proved that the anti-icing fillers can effectively delay and inhibit the occurrence of road icing, weaken the bonding force between pavement surface and the ice layer and make the ice layer easy to be removed. It is found that the comprehensive performance of traditional ice inhibitors is better. Moreover, the high-temperature stability, anti-icing capacity and ice inhibition persistence of environmentally friendly anti-icing additives need to be improved.