抗剥落剂对沥青表面自由能的影响  

Effect of anti-stripping agents on surface free energy of asphalt binders

作　　者：魏建明[1] 张玉贞[1] 张晏 YOUTCHEFF S John 

机构地区：[1]中国石油大学重质油国家重点实验室,山东东营257061 [2]中国石油集团经济技术研究院,北京100724 [3]美国联邦公路局Turner-Fairbank道路研究中心

出　　处：《中国石油大学学报（自然科学版）》2011年第2期162-165,共4页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：美国联邦公路局项目(DTFH61-07-P-00183)

摘　　要：测定沥青与不同液体的接触角,利用Owen-Wendt法确定沥青的表面自由能,考察不同抗剥落剂及其与多聚磷酸的复配对沥青表面自由能的影响。结果表明:抗剥落剂的加入增加了沥青的表面自由能,提高了沥青-集料界面黏附能力,可增强沥青混合料的抗水损害能力;抗剥落剂与多聚磷酸的复配可降低沥青的表面自由能。The surface free energy of the asphalt binder was determined using the Owen-Wendt method by determining the contact angles between asphalt binders and different probe liquids.The effects of different anti-stripping agents and its complex with polyphosphoric acid on the surface free energy of asphalt binder were evaluated.The results indicate that the anti-stripping agents increase the surface free energy of asphalt binder and the adhesion ability between asphalt and aggregate,which enhances the moisture damage resistance of asphalt.The addition of anti-stripping agents with polyphosphoric acid can reduce the surface free energy of asphalt binder.

关 键 词：沥青 表面自由能 抗剥落剂 水损害 接触角 

分 类 号：TE626.28[石油与天然气工程—油气加工工程]