Reinforcement effect of fiber and deoiled asphalt on high viscosity rubber/SBS modified asphalt mortar

作     者：Wu Mengmeng Li Rui Zhang Yuzhen Wei Jianming Lv Yuchao Ding Xuemei 

作者机构：State Key Laboratory of Heavy Oil Processing China University of Petroleum (East China) 

出 版 物：《Petroleum Science》 (石油科学（英文版）)

年 卷 期：2014年第11卷第3期

页      面：454-459页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 

基　　金：supported by the National Natural Science Foundation of China (51008307) the Fundamental Research Funds for the Central Universities (09CX04039A) the Graduate Student Innovation Project of China University of Petroleum (East China) (12CX06055A) 

主　　题：Asphalt mortar fiber filler-asphalt ratio reinforcement mechanical property 

摘      要：In this paper we investigate the reinforcement mechanism of high viscosity rubber/SBS modified asphalt mortar mixed with fiber （mineral, lignin or carbon fiber） and deoiled asphalt （DOA）. The softening point, penetration and viscosity tests were conducted to characterize the engineering properties of asphalt-fiber mortar. The microstructure of fiber was observed using scanning electron microscopy （SEM）, and the results indicated that fiber can effectively improve the toughness of asphalt matrix through forming a spatial network structure, and then adhesion and stabilization of asphalt binder. The cone penetration test was designed to study the rheological property of fiber modified asphalt. The results indicated that the reinforcement effect increased with fibers and DOA fraction increasing to a certain threshold, and the optimal fiber content was dependent on the fiber type and its length. Fiber content and filler-asphalt ratio had significant effects on the softening point, penetration, viscosity and cone penetration of asphalt mortar.