沥青混合料蠕变柔量与松弛模量的转换关系研究  

Study on Conversion Between Creep Compliance and Relaxation Modulus of Asphalt Mixture

作　　者：严明星 王金昌[2] 

机构地区：[1]武汉市政工程设计研究院有限责任公司,武汉430023 [2]浙江大学交通工程研究所,杭州310058

出　　处：《公路交通技术》2016年第5期28-31,共4页Technology of Highway and Transport

基　　金：国家自然科学基金项目(51078331)

摘　　要：为了获得沥青混合料的松弛模量,采用易于操作的试验方法,利用高低温蠕变试验测定沥青混合料蠕变柔量,并利用蠕变柔量和松弛模量卷积关系推导出沥青混合料松弛模量表达式。该表达式可避免数值积分法求解所产生的误差和采用拉普拉斯变化的繁琐计算。使用时温等效原理得到不同温度下的松弛模量主曲线,可为沥青混合料低温性能分析评价提供参考。In order to get relaxation modulus of asphalt mixture, this paper introduces an easily operated experiment method, which uses high/low temperature creep test to measure the creep compliance of asphalt mixture. Then convolution relation between creep compliance and relaxation modulus is used to deduce relaxation modulus expression for asphalt mixture. The expression may avoid error by numerical integrating or complicated calculation by using Laplace changes. With time/temperature equivalence principle, we get main curve of relaxation modulus with different temperatures, which offers reference for the analysis and evaluation of low temperature performance of asphalt mixture.

关 键 词：沥青混合料 蠕变柔量 松弛模量 线性叠加原理 

分 类 号：U416.217[交通运输工程—道路与铁道工程]