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Title:

Novel Approach for Fatigue Performance Characterization of Asphalt Mixes Using Indirect Tension Test Data

Accession Number:

01626247

Record Type:

Component

Abstract:

Fatigue cracking is one of the major distresses responsible for the failure of asphalt pavements. The widely-accepted Superpave® volumetric mix design method does not consider screening the asphalt mixes based on their fatigue resistance. Based on a survey conducted in this study, it was found that many state Departments of Transportation (DOTs) do not perform a fatigue test during mix design, mainly due to lack of specialized equipment, trained personnel and consensus about the most appropriate test method. This present study was undertaken to suggest a simple, quick and effective fatigue test method and the corresponding data analysis procedure. It was found that the indirect tension test, which is usually conducted in the DOTs on a regular basis, can be used to characterize the fatigue resistance of asphalt mixes as well. A simplified data analysis approach has been proposed. The fatigue resistance of asphalt mixes can be determined by using a newly derived parameter called Fatigue Index (f sub i). Fatigue resistance of five different asphalt mixes were evaluated using this new parameter, f sub i. It was found that the f sub i parameter was able to statistically discriminate five selected asphalt mixes with respect to their fatigue resistance. The effectiveness of the f sub i parameter was validated by investigating its correlations with the results of the semi-circular bend and four-point beam fatigue tests.

Supplemental Notes:

This paper was sponsored by TRB committee AFK50 Standing Committee on Structural Requirements of Asphalt Mixtures. Alternate title: A Novel Approach for Fatigue Performance Characterization of Asphalt Mixes Using Indirect Tension Test Data.

Monograph Accession #:

01618707

Report/Paper Numbers:

17-06292

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Barman, Manik
Ghabchi, Rouzbeh
Singh, Dharamveer
Zaman, Musharraf
Commuri, Sesh

Pagination:

18p

Publication Date:

2017

Conference:

Transportation Research Board 96th Annual Meeting

Location: Washington DC, United States
Date: 2017-1-8 to 2017-1-12
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Subject Areas:

Highways; Materials; Pavements

Source Data:

Transportation Research Board Annual Meeting 2017 Paper #17-06292

Files:

TRIS, TRB, ATRI

Created Date:

Dec 8 2016 12:33PM