Micromechanical model for asphalt mixture coupling inter-particle effect and imperfect interface

被引：24

作者：

Gao, Xinwen ^{[1
,2
]}

Fan, Zepeng ^{[3
]}

Zhang, Jiupeng ^{[4
]}

Liu, Shaowen ^{[3
]}

机构：

[1] Changsha Univ Sci & Technol, Sch Traff & Transportat Engn, Changsha 410004, Hunan, Peoples R China

[2] Dept Transportat Shanxi Prov, Taiyuan 030001, Shanxi, Peoples R China

[3] Shanxi Transportat Res Inst, Taiyuan 030006, Shanxi, Peoples R China

[4] Changan Univ, Sch Highway, Xian 710064, Shaanxi, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2017年 / 148卷

基金：

中国国家自然科学基金;

关键词：

Asphalt mixture; Effective modulus; Inter-particle effect; Imperfect interface; Replacement procedure; EFFECTIVE ELASTIC-MODULI; PARTICULATE COMPOSITES; REINFORCED COMPOSITES; INHOMOGENEOUS INTERPHASE; MULTIPHASE COMPOSITES; WEAKENED INTERFACE; DYNAMIC MODULUS; UNIFIED SCHEME; PREDICTION; CONCRETE;

D O I：

10.1016/j.conbuildmat.2017.05.015

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Inter-particle effect and imperfect interface are the two major challenges during the micromechanical modeling of asphalt mixture due to its complex heterogeneity. This paper presents the development and validation of a micromechanical model regarding this concern. The linear spring model is adopted to simulate the imperfect interface between asphalt mortar and aggregates, and the replacement procedure is established to incorporate the imperfect interface effect into the Ju-Chen (J-C) model to coupling inter-particle effect and imperfect interface. The proposed model is used to predict the dynamic modulus of asphalt mixture and analyze the influence of inter-particle effect and imperfect interface. The results show that the predictions decrease with the interface parameter m(r)/m(theta) but increase with parameter Y(g). The imperfect interfacial bonding weakens the overall property of asphalt mixture and the weaken effect for composites with stronger inter-particle effect is more significant. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：696 / 703

页数：8

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