Effect of polyethylene glycol phase change materials on the ability of asphalt mixture to melt snow and ice
In order to study the effect of polyethylene glycol phase change material on the snow melting and ice melting ability of asphalt mixture,phase change material was added in the asphalt mixture mixing process,and the applicability of polyethylene glycol phase change material was considered,two gradations of AC-10 and AC-13 were adopted,and three methods were designed for evaluation:sponge freezing test,ice adhesion test and ice melting test.The results show that the PEM will accelerate the thawing of the sponge,and the higher the content of the PCM,the greater the light intensity,and the shorter the freezing time of the sponge and asphalt mixture.Polyethylene glycol phase change material can greatly reduce the adhesion between ice and asphalt pavement;the cumulative ice melting quality and ice melting rate of phase change asphalt mixture are greater than those of ordinary asphalt mixture,and the increase of phase change material content and the decrease of ambient temperature will improve its relative snow melting and ice melting capacity.Polyethylene glycol phase change material has a good effect of melting snow and ice in different gradations,and can be applied to winter pavement de-icing.
road engineeringasphalt mixturephase change energy storage materialspolyethylene gly-colmelting snow and ice
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