相变材料在沥青工程中的应用研究

Application of Phase Change Materials in Asphalt Engineering

沥青是一种温度敏感性材料,其性能会随着周围环境的变化而变化,尤其是在夏季高温气候与城市热岛效应的双重作用下,沥青路面会吸收大量的热量从而加速粘弹状态间的转变,引起车辙、泛油、麻面及坑槽等病害,而这非常不利于沥青路面的行车稳定性与维护。相变材料作为一种新型环保储能材料,可利用自身的储热性能吸收大量的热量而维持自身温度不变,基于此,本文综述了相变材料在沥青工程中的应用现状并分析展望了其应用前景。

Asphalt is a kind of temperature sensitive material,and its performance will be changed with the change of the surrounding environment,especially in the summer high temperature climate and urban heat island effects. Asphalt pavement can absorb a large amount of heat to accelerate the change of viscoelastic state,resulting in ruts,oil flooding,pitting and other diseases,which is not conducive to the stability and maintenance of asphalt pavement. As a new kind of environmental energy storage material,phase change materials can absorb a large amount of heat and keep its temperature unchanged. Based on this,the application status of phase-change materials in asphalt engineering is summarized and its application prospect is analyzed.