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Title:

Sensitivity of J-Integral to Mix Properties and Coring Directions

Accession Number:

01697369

Record Type:

Component

Abstract:

This study evaluated fracture resistance of seven mixes using Semicircular Bending (SCB) test and correlated it with mix properties and coring directions. The effect of binder grade, amount, and other mix parameters on the ultimate load, deformation to ultimate load, strain energy and J-integral are evaluated for both vertical and horizontal directions. It is observed that mix with soft binder allows higher level of deformation before initiation of cracking. J-integral shows increasing trend with the increase of effective binder content. The ultimate load in SCB test shows good correlation with the indirect tensile strength (ITS) of the mix. Displacement and strain energy for horizontal cores are higher than vertical cores. Four out of seven mixes show J-integral values higher for horizontal cores than vertical cores. Three mix showed similar J-integral values.

Supplemental Notes:

This paper was sponsored by TRB committee AFK50 Standing Committee on Structural Requirements of Asphalt Mixtures.

Report/Paper Numbers:

19-02953

Language:

English

Corporate Authors:

Transportation Research Board

Authors:

Ahmad, Mohiuddin
Bairgi, Biswajit K
Khan, Zafrul H
Tarefder, Rafiqul A

Pagination:

8p

Publication Date:

2019

Conference:

Transportation Research Board 98th Annual Meeting

Location: Washington DC, United States
Date: 2019-1-13 to 2019-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Uncontrolled Terms:

Semicircular bending test

Subject Areas:

Highways; Materials; Pavements

Source Data:

Transportation Research Board Annual Meeting 2019 Paper #19-02953

Files:

TRIS, TRB, ATRI

Created Date:

Dec 7 2018 9:25AM