Viscoelastic model for asphalt mixture under repeated haversine load

作     者：张久鹏 黄晓明 Zhang Jiupeng;Huang Xiaoming

作者机构：长安大学特殊地区公路工程教育部重点实验室西安710064 东南大学交通学院南京210096 

出 版 物：《Journal of Southeast University(English Edition)》 (东南大学学报（英文版）)

年 卷 期：2009年第25卷第4期

页      面：523-526页

核心收录：

学科分类：08[工学] 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] 

基　　金：The National Natural Science Foundation of China(No50608006) Program for New Century Excellent Talents in University(NoNCET-07-0120) 

主　　题：asphalt mixture permanent deformation mechanics model repeated haversine load 

摘      要：The series-wound dashpot of the Burgers model is modified by introducing the strain hardening parameter, and the new model is considered as a combination of the modified dashpot and the Van Der Poel model. The cyclical pulse load consisting of a haversine load time and a rest period is adopted to simulate the actual vehicle load, and the permanent strain model under the repeated load is derived from the rheological and viscoelastic theories. Subsequently, the model is validated by the results of uniaxial repeated load permanent deformation tests of three asphalt mixtures. It is indicated that the proportion of residual viscoelastic strain to permanent strain decreases gradually with the load cycles, and only accounts for 2% to 3% during most of the loading period. If the rest period is long, the residual viscoelastic strain is little. The rest period of the actual vehicle load may be long enough, so the residual viscoelasticity can be ignored and the simplified model can be obtained. The proposed model can well describe the permanent deformation of asphalt mixtures under repeated load.