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Adhesion Evaluation Of Asphalt-Aggregate Interface Using Surface Free Energy Method, Jie Ji, Hui Yao, Luhou Liu, Zhi Suo, Peng Zhai, Xu Yang, Zhanping You
Adhesion Evaluation Of Asphalt-Aggregate Interface Using Surface Free Energy Method, Jie Ji, Hui Yao, Luhou Liu, Zhi Suo, Peng Zhai, Xu Yang, Zhanping You
Michigan Tech Publications
The influence of organic additives (Sasobit and RH) and water on the adhesion of the asphalt-aggregate interface was studied according to the surface free energy theory. Two asphalt binders (SK-70 and SK-90), and two aggregate types (limestone and basalt) were used in this study. The sessile drop method was employed to test surface free energy components of asphalt, organic additives and aggregates. The adhesion models of the asphalt-aggregate interface in dry and wet conditions were established, and the adhesion work was calculated subsequently. The energy ratios were built to evaluate the effect of organic additives and water on the adhesiveness …