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Title:

Development of Asphalt Concrete Rutting Model Using Permanent Strain Database

Accession Number:

01046108

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Permanent deformation is one of the most important types of load-associated distresses occurring in flexible pavement systems. The permanent deformation models, used to predict the rut depth of the asphalt layer, usually relate the plastic strains to the number of load repetitions. Plastic strain can be measured using laboratory repeated load permanent deformation tests. On the other hand, an empirical model that relates the number of traffic applications and other mixture properties can be developed to calculate the plastic strains for different conditions based on the analysis of the testing data. This research involved the summary and analysis of repeated load permanent deformation testing data for AC mixtures from different projects at the University of Maryland and at Arizona State University over the past 15 years. A comprehensive database was developed and carefully examined for accuracy of data input. This database was used to develop regression models to predict the permanent strains produced in the asphalt mixtures at different load repetitions. Different models were evaluated and studied under this research work. A model was selected from these models. The selected model included independent variables such as the resilient strain, number of cycles, aggregate gradations, stress state, binder shear modulus and a volumetric property. The model had a coefficient of correlation (R2) of 78%. The model included mixture and binder properties that are known to be important in the permanent deformation prediction.

Monograph Accession #:

01042056

Report/Paper Numbers:

07-2448

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

El-Basyouny, Mohamed M
Witczak, Matthew
Zapata, Claudia E

Pagination:

219

Publication Date:

2007

Conference:

Transportation Research Board 86th Annual Meeting

Location: Washington DC, United States
Date: 2007-1-21 to 2007-1-25
Sponsors: Transportation Research Board

Media Type:

CD-ROM

Features:

Figures (3) ; References (6) ; Tables (5)

Uncontrolled Terms:

Plastic strain; Rut depth

Subject Areas:

Construction; Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I52: Construction of Pavements and Surfacings

Source Data:

Transportation Research Board Annual Meeting 2007 Paper #07-2448

Files:

TRIS, TRB

Created Date:

Feb 8 2007 7:08PM