确定乳化沥青混合料中乳化沥青最佳用量的方法

本发明提供了一种确定乳化沥青混合料中乳化沥青最佳用量的方法，其包括：将多档集料和矿粉进行级配；确定乳化沥青混合料的最佳含水率OWC；确定沥青微粒相对于水的等效润滑系数γ；确定乳化沥青混合料中乳化沥青的最佳用量OEC；其中，最佳含水率OWC应根据马歇尔试件的毛体积相对密度、15℃劈裂强度和沥青裹附率均较高进行确定，等效润滑系数γ根据马歇尔试件的空隙率变化小的原则确定，乳化沥青最佳用量OEC以混合料的空隙率较小和15℃劈裂强度较大为原则确定；本发明的方法与现有方法相比，其消除了不同乳化沥青用量下混合料内部干湿程度的差异，从而减小了试验误差，优化了当前乳化沥青最佳用量OEC的确定方法。 The invention provides a method for determining optimal dosage of emulsified asphalt in an emulsified asphalt mixture. The method comprises the following steps: performing grading on multiple grades of aggregates and mineral powder; determining the optimal water content OWC of the emulsified asphalt mixture; determining an equivalent lubrication coefficient gamma of the asphalt particles in relative to the water; determining the optimal dosage OEC of the emulsifier asphalt in the emulsified asphalt mixture, wherein the optimal water content OWC is determined according to the condition that thebulk volume relative density, splitting strength at 15 DEG C and asphalt attaching rate of a Marshall test piece are relatively hi