A MICROMECHANICAL FRAMEWORK WITH AGGREGATE-MASTIC INTERFACE EFFECT FOR PREDICTING UNIAXIAL COMPRESSION CREEP OF ASPHALT MIXTURE

According to the elastic-viscoelastic correspondence principle, an elastic micromechanical framework taking the inclusion-matrix interface effect into account is extended for predicting viscoelastic properties of asphalt mixture, which is simply treated as elastic coarse aggregate inclusions periodi...

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Bibliographic Details
Published in:Acta mechanica solida Sinica 2014-06, Vol.27 (3), p.306-314
Main Authors: Wu, Jun, Yang, Xinhua, Bai, Fan
Format: Article
Language:English
Subjects:
Asphalt
asphalt mixture
Classical Mechanics
Compressing
compression creep
Compression tests
Creep (materials)
Elastic constants
elastic-viscoelastic correspondence principle
Engineering
Mathematical models
micromechanics
Stresses
Surfaces and Interfaces
Theoretical and Applied Mechanics
Thin Films
Viscoelasticity
单轴压缩
压缩蠕变
框架
沥青混合料
沥青混合物
界面效应
细观力学
预测
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Summary:According to the elastic-viscoelastic correspondence principle, an elastic micromechanical framework taking the inclusion-matrix interface effect into account is extended for predicting viscoelastic properties of asphalt mixture, which is simply treated as elastic coarse aggregate inclusions periodically and isotropically embedded in a viscoelastic asphalt mastic matrix. The Burgers model is adopted for characterizing the matrix mechanical behavior, so that the homogenized relaxation modulus of asphalt mixture in compression creep is derived. After a series of uniaxial compression creep tests are performed on asphalt mastic in different temperature and stress conditions in order to determine the matrix constitutive parameters, the framework presented is validated by comparison with the experiment, and then some predictions of uniaxial compression creep behavior of asphalt mixture in different temperature and stress conditions are given.
ISSN:0894-9166
1860-2134
DOI:10.1016/S0894-9166(14)60039-2