沥青路面材料中水损伤的试验研究

Experimental Study on Water Damage in Asphalt Pavement Materials

提出了一个简单的实验方法来测量粗骨料、细骨料与沥青粘结剂的混合料以及热拌沥青中的水扩散系数。该方法是在一定温度和相对湿度环境下对试样-容器组合的定期测量重量,并利用菲克第一定律估计材料的扩散系数,并进行了有限元分析。结果表明,所提出的实验方法是一种量化水扩散系数的简单而有效的方法,利用测量的材料特性,利用数值模拟研究水对沥青混合料力学性能的损伤。

This paper proposes a simple experimental method to measure coarse aggregate,fine aggregate and asphalt binder in the mixtures,as well as the water diffusion coefficient in hot mix asphalt.This method is used to regularly measure the weight of the sample-container combination under a certain temperature and relative humidity environment,Fick s first law is used to estimate the diffusion coefficient of the materials,and finite element analysis is conducted.The results indicate that the proposed experimental method is simple and effective for quantifying the water diffusion coefficient,which utilizes material properties and numerical simulation to study the damage of water to the mechanical properties of asphalt mixtures.