沥青—集料表面能参数及其对水损害影响

沥青混合料水损坏是沥青路面主要破坏形式之一。运用表面自由能理论来分析沥青混合料的水损害问题。表面自由能是指处于液体或固体表面的分子与它们处于内部时相比所具有的自由能过剩值。基于表界面理论,推导出沥青在矿料表面的黏附模型和水损坏模型;通过测得矿料和沥青的表面能参数指标带入模型分析得出,沥青在矿料表面的黏附趋势以及发生水损坏的趋势;讨论了沥青和矿料的表面能参数对黏附及水损坏的过程的影响,为沥青和矿料的匹配选择提供了更加科学的手段,具有重要的理论意义和工程应用价值。

Asphalt-AggregateSurface Free Energy Parameters Testing and Application on Moisture Damage

Moisture damage is one of the main deteriorations of asphalt pavement which can be analyzed based on surface free energy theory.For liquid or solid materials,surface free energy is the excess value of surface molecules compared with the internal ones. Adhesion model and moisture damage model of asphalt and aggregate were presented based on surface energy.Tendencies of adhesion and moisture damage were analyzed by taking surface energy parameter index into the models.And the influence of parameters of asphal...