Abstract The moisture stability of an asphalt mixture was enhanced with cement, hydrated lime, and an anti-stripping agent (called AMR II) to improve the adhesive bond of asphalt with the aggregate. A total of eight asphalt binders and three aggregates (crushed gravel, limestone, and granite) were used for the preparation of different asphalt mixtures. Indirect tensile strength and residual stability tests were carried out to determine the moisture stability. The surface free energy (SFE) of the asphalt binder and aggregates were measured using the sessile drop method and universal sorption device method, respectively. Based on the SFE method, the cohesive, adhesive, and stripping energies of the asphalt and asphalt mixtures were studied. Moreover, the SFE parameters were introduced while analyzing the correlation of the cohesive, adhesive, and stripping energies of the asphalt with the moisture stability. The results show that the incorporation of a single or compound anti-stripping agent can improve the moisture stability of the asphalt mixture, and the improvement effect of compound agents is greater. Furthermore, the SFE components improved after the addition of the anti-stripping agent. The addition of the anti-stripping agent influenced the cohesive and adhesive energy remarkably, whereas the aggregate type, especially its silica content and specific surface area, has a significant effect on the adhesive and stripping energy of the asphalt mixture. A linear regression analysis suggested that the SFE parameters have a good correlation with the moisture damage properties. The SFE parameters can be used to determine the moisture damage performance, and the SFE method can be used to verify the moisture stability of asphalt mixtures.

中文翻译：

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评价抗剥落剂对沥青混合料湿损影响的表面自由能法

摘要 水泥、熟石灰和抗剥落剂（称为AMR II）增强了沥青混合料的水分稳定性，以提高沥青与骨料的粘合力。总共使用八种沥青结合料和三种骨料（碎石、石灰石和花岗岩）来制备不同的沥青混合物。进行间接拉伸强度和残余稳定性试验以确定水分稳定性。沥青结合料和集料的表面自由能 (SFE) 分别使用静滴法和通用吸附装置法测量。基于SFE方法，研究了沥青和沥青混合料的内聚能、粘附能和剥离能。此外，在分析内聚力、粘合剂、和具有水分稳定性的沥青的剥离能。结果表明，掺入单一或复合抗剥落剂均能提高沥青混合料的水分稳定性，且复合抗剥落剂的改善效果更大。此外，加入抗剥离剂后，SFE 组分得到改善。抗剥落剂的加入对沥青混合料的黏聚能和黏附能有显着影响，而集料类型，尤其是其二氧化硅含量和比表面积，对沥青混合料的黏附能和剥落能有显着影响。线性回归分析表明，SFE 参数与湿损特性具有良好的相关性。SFE 参数可用于确定湿损性能，