Evaluation of asphalt-aggregate adhesion using surface free energy theory

作     者：Chenhao Guo Sen Han Raorao Han 

作者机构：Institute of Highway Chang 'an university Xi'an City Shannxi Province710064 

出 版 物：《International Journal of Technology Management》 (国际技术管理)

年 卷 期：2014年第9期

页      面：99-102页

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

主　　题：asphalt surface free energy adhesion cohesion 

摘      要：In order to take a precise and objective evaluation on asphalt-aggregate adhesion, this paper analyzed the function at asphalt- aggregate interface using surface free energy theory. Two asphalts and two aggregates were selected and their surface free energy parameters, FLW, F and F-, were measured by the Wilhelmy plate method and the column wicking technique, respectively. Then, the resistance to moisture damage of asphalt mixture were predicted using calculated asphalt-aggregate adhesive bond energy and asphalt cohesive bond energy. The results show that moisture damage is a thermodynamically favorable phenomenon. Asphalt with a great acid-base polar component and a low Lifshitz-van der Waals apolar component always exhibits perfect cohesion.