Effects of Fibers on the Dynamic Properties of Asphalt Mixtures

作     者：吴少鹏 WU Shaopeng YE Qunshan LI Ning YUE Hongbo (Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education(Wuhan University of Technology),Wuhan 430070,China)

作者机构：Key Laboratory of Silicate Materials Science and Engineering of Ministry of Education(Wuhan University of Technology) 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2007年第22卷第4期

页      面：733-736页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：the Education Ministry for the New Century Excellent Talents Project(NCEF-05-0656) 

主　　题：fiber asphalt mixture dynamic modulus phase angle master curve 

摘      要：The dynamic characteristics of fiber-modified asphalt mixture were investigated. Cellulose fiber, polyester fiber and mineral fiber were used as additives for asphalt mixture, and the dosage was 0.3%, 0.3%, 0.4%, respectively. Dynamic modulus test using SuperPave simple performance tester （SPT） was conducted to study the dynamic modulus （E＇） and phase angle （δ） for the control asphalt mixture and fiber-modified ones at various temperatures and frequencies. Experimental results show that all fiber-modified asphalt mixtures have higher dynamic modulus compared with control mixture. The dynamic modulus master curves of each type of asphalt mixtures are determined based on nonlinear least square regression in accordance with the time- temperature superposition theory at a control temperature （21.1℃）. The fatigue parameter E^＊×sinδ and rutting parameter E^＊/sinδ of asphalt mixture are adopted to study the fatigue and rutting-resistance properties, and experimental results indicate that such properties can be improved by fiber additives.