SDUDY OF THE CREEP DAMAGE PROPERTIES OF ASPHALT MIXTURE UNDER STATIC LOAD
Asphalt concrete AC-13 and SMA-13 are designed to study their viscoelastic and damage properties under uniaxial pressure. The results indicate that the flow deformation of viscosity of asphalt mixture doesnt unlimitly increase with the loading time. As time goes by, the increment of flow deformation of viscosity decreases gradually and causes the flow deformation of viscosity to incline a stable value ultimately, which is so-called ‘consolidation effect. Moreover, under the same conditions, SMA has a stronger anti-deformation ability than AC. According to the flow characteristics of asphalt mixture, it is proposed a comparatively desirable and useful creep compliance model and visco-elastic-plastic creep model. Based on the static creep test results, the parameters concerned of the models are determined by using a constrained optimization method.
Asphalt mixture Creep Viscoelasticity Damage Model
Zhou Zhigang Feng Lin Yuan Xiuxiang Xiong Hua
Changsha University of Science & Technology,Key Laboratory of Road Structure & Material,Ministry of Transport of PRC,Hunan Changsha 410004
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）