集料与填料比表面积对其表面能参数的影响研究  

Study on the Difference Between Cohesive Energy and Adhesive Energy of Asphalt Mixture

作　　者：苗强[1,2] 刘安刚 刘青海 罗蓉 牛茏昌[1,2] MIAO Qiang;LIU Angang;LIU Qinghai;LUO Rong;NIU Longchang(School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China;Hubei Highway Engineering Research Center, Wuhan 430063, China;Hubei Changjiang Road and Bridge Co. Ltd., Wuhan 430200, China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063 [2]湖北省公路工程技术研究中心,武汉430063 [3]湖北长江路桥有限公司,武汉430200

出　　处：《武汉理工大学学报（交通科学与工程版）》2022年第3期542-547,共6页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：湖北长江路桥股份有限公司科技项目(CJLQ/BSGS/QTHT/002-2020)。

摘　　要：沥青混合料水损害引起的开裂包括内聚开裂与黏附开裂,两种开裂规律差异明显是导致水损害机制不明确的主要原因之一.文中通过对比集料与填料表面能参数、表观特性的差异,确定导致内聚开裂和黏附开裂不同的根本原因是表面能参数.同时,基于表面能理论提出考虑比表面积的匹配性指标ER_(2)值,并通过两种级配沥青混合料浸水马歇尔试验和冻融劈裂试验验证改进后ER2值指标的可靠性.Cracking caused by water damage of asphalt mixture includes cohesive cracking and adhesive cracking,and the difference between the two cracking laws is one of the main reasons for the unclear mechanism of water damage.By comparing the difference of surface energy parameters and apparent characteristics between aggregate and filler,it is found that the fundamental reason for the difference between cohesive cracking and adhesive cracking is the surface energy parameters.Meanwhile,based on the surface energy theory,the matching index ER_(2 )value considering the specific surface area was put forward,and the reliability of the improved ER_(2) value index was verified by immersion Marshall test and freeze-thaw splitting test of two graded asphalt mixtures.

关 键 词：表面能 内聚结合能 黏附结合能 比表面积 匹配性指标 

分 类 号：U414.1[交通运输工程—道路与铁道工程]