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Title:

Evaluation of Mix Variables on Laboratory Performance of Open-Graded Friction Course Mixtures

Accession Number:

01553090

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This study was undertaken by the South Carolina Department of Transportation (DOT) to assess the relative impact of different mix design variables on the laboratory performance of open-graded friction course (OGFC) mixtures in response to inconsistent field performance of these mixtures across the state. The specific variables evaluated included aggregate source and gradation, binder grade, mixing and compaction temperature, and the removal of cellulose fibers. In this study, porosity was used as an indicator of the functional performance and the Cantabro abrasion loss was used as a measure of the mixture performance with respect to raveling. The results revealed that the porosity was only affected by the presence of cellulose fibers in the mixture. When the fibers were removed from the mixture, it resulted in a slight increase in porosity. The abrasion resistance was most affected by the binder grade as the mixtures made with PG64-22 binder generally had greater abrasion resistance than the PG76-22 mixtures. Additionally, a reduction in mixing and compaction temperature resulted in a significant increase in abrasion resistance of the OGFC mixtures. Finally, there was a correlation between the aggregate LA abrasion value and the OGFC mixture performance, as a higher LA abrasion loss aggregate generally resulted in a lower mix porosity, thus leading to an increase in abrasion resistance.

Supplemental Notes:

This paper was sponsored by TRB committee AFK40 Characteristics of Asphalt-Aggregate Combinations to Meet Surface Requirements. Alternate title: Evaluation of Mix Variables on Laboratory Performance of Open Graded Friction Course (OGFC) Mixtures.

Monograph Accession #:

01550057

Report/Paper Numbers:

15-5456

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Putman, Bradley J
Selkinghaus, Cliff B
Lyons, Kimberly R
Aravalli, Yazurved Sai Vishwaksen

Pagination:

16p

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:

Figures; References; Tables

Uncontrolled Terms:

Binder grade

Geographic Terms:

South Carolina

Subject Areas:

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

Source Data:

Transportation Research Board Annual Meeting 2015 Paper #15-5456

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 1:50PM