Micromechanics prediction of effective modulus for asphalt mastic considering inter-particle interaction
Micromechanics prediction of effective modulus for asphalt mastic considering inter-particle interaction
复制标题
考虑颗粒间相互作用的沥青玛蹄脂有效模量的微观力学预测
DOI：
10.1016/j.conbuildmat.2015.10.053
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发表时间：
2015-12-30
影响因子：
7.4
通讯作者：
Li, Rui
中科院分区：
文献类型：
--
作者：
Pei, Jianzhong;Fan, Zepeng;Li, Rui
本文提出了一种新的细观力学模型，Ju-Chen（J-C）模型，预测沥青玛蹄脂的有效粘弹性模量的发展和验证，考虑颗粒间的相互作用。在两颗粒相互作用问题近似解的基础上，将径向分布函数融入整体体积平均本征应变张量中，考虑了颗粒间的相互作用，并将其推广和简化，用于预测不同填料体积分数下沥青胶浆的有效复模量。结果表明，颗粒间的相互作用随填料体积分数的增加而增加，随测试频率的增加而减小，在填料体积分数不超过50%的低、中等范围内，预测结果与实验数据吻合较好。与两种常用的细观力学模型（M-T模型和DSEM模型）相比，J-C模型对胶粘剂有效模量的估计相对最优，且J-C模型的适用性有待进一步提高。(C)2015爱思唯尔有限公司版权所有。
This paper presents the development and validation of a new micromechanical model, Ju-Chen (J-C) model, to predict the effective viscoelastic modulus of asphalt mastic by considering the inter-particle interaction. Based on the approximate solutions for two-particle interaction problem, the radial distribution function is integrated into the ensemble-volume averaged eigenstrain tensor so as to consider the inter-particle interaction, and the solution could be extended and simplified to predict the effective complex modulus of asphalt mastic with different filler volume fractions. It is found that the inter-particle interaction increases with the filler volume fraction and decreases with the test frequency, and the predictions agree well with the experiment data at low and moderate filler volume fractions, not exceeding 50%. Compared with two commonly used micromechanical models (M-T model and DSEM model), the J-C model relatively gives the best estimation of the effective modulus of mastics, and the applicability of J-C model could be further improved. (C) 2015 Elsevier Ltd. All rights reserved.