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Title:

Coupling of Viscoelastic Continuum Damage Mechanics and Finite Element Modeling to Predict Asphalt Mastic Fatigue Behavior

Accession Number:

01550206

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

One of the most important pavement distresses which seriously affects the pavement performance is fatigue cracking. As this cracking generally takes place in the binder phase of the asphalt mixture, the binder fatigue behavior is assumed to be one of the main factors influencing the overall pavement fatigue performance. It is also known that filler type and concentration can affect damage initiation and progression. This study was conducted to develop a tool to characterize the damage properties of the asphalt mastics (asphalt binder+ filler particles). The linear amplitude sweep (LAS) test is currently considered as a surrogate to time sweep (TS) test for specification of asphalt binder fatigue resistance. Although the TS test consists of repeated cyclic loading at constant amplitude, the LAS test uses increasing loading amplitudes to accelerate the rate of damage accumulation in the material. Viscoelastic continuum damage (VECD) mechanics can be utilized to model the fatigue behavior of asphalt binders from a single LAS test. In the present study the VECD model is implemented into ABAQUS via the user material subroutine (UMAT) in order to simulate the state of damage in the binder phase under the repeated uniaxial sinusoidal loading. The finite element (FE) model is then used for simulation of the asphalt mastics with varying filler volume fractions. Comparisons between experimental data and FE simulation results indicate that the model coupled with the VECD mechanics is very capable of predicting the damage response of mastics produced from various filler volume fractions with an acceptable accuracy.

Supplemental Notes:

This paper was sponsored by TRB committee AFK50 Characteristics of Asphalt Paving Mixtures to Meet Structural Requirements.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-3321

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Arshadi, Amir
Bahia, Hussain

Pagination:

15p

Publication Date:

2015

Conference:

Transportation Research Board 94th Annual Meeting

Location: Washington DC, United States
Date: 2015-1-11 to 2015-1-15
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Bibliography; Figures; Tables

Identifier Terms:

ABAQUS (Computer program)

Subject Areas:

Highways; Materials; Pavements; I31: Bituminous Binders and Materials

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-3321

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 1:06PM