基于等效夹杂理论的沥青混合料热膨胀系数预测  

Prediction on Thermal Expansion Coefficient of Asphalt Mixture Based on Equivalent Inclusion Method

作　　者：吴俊[1] 杨新华[2] 白凡[2] 刘晓航[1] 

机构地区：[1]上海第二工业大学智能制造与控制工程学院,上海201209 [2]华中科技大学土木工程与力学学院,武汉430074

出　　处：《上海第二工业大学学报》2015年第2期126-130,共5页Journal of Shanghai Polytechnic University

基　　金：上海第二工业大学校基金项目(No.EGD14XQD11);上海市教委优青项目(No.ZZegd14020);上海第二工业大学培育学科建设项目(No.XXKPY1312)资助

摘　　要：研究针对沥青混合料的宏观热膨胀系数预测问题。利用Eshelby等效夹杂理论,通过4参量黏弹性本构模型描述沥青混合料基体材料沥青砂的黏弹性能,根据宏观体积热膨胀量与各组分体积热膨胀量之和相等的原则,求解出沥青混合料的热膨胀系数,所得结果与前人的实验结果吻合较好。结果表明,该方法是有效的,可以为沥青混合料的设计和预测提供理论依据,具有一定的理论价值。The thermal expansion coefficient of the asphalt mixture was investigated using Eshelby equivalent inclusion theory and applying the four-parameter visco-elastic constitutive model assumed that the quantity of the macroscopic volume expansion of mixture is equal to the total quantity of mesoscopic volume expansion of the two-phase medium of the mixture. Good agreement is observed between the predicted and experimental results. The validity of the method is exhibited through the coincidence. The method has a certain theoretical value because that it provides basis for the asphalt mixture design and prediction.

关 键 词：沥青混合料 沥青砂 热膨胀系数 骨料 细观力学 

分 类 号：U414[交通运输工程—道路与铁道工程]