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Title:

POTENTIAL OF USING STONE MATRIX ASPHALT FOR THIN OVERLAYS

Accession Number:

00815875

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

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Order URL: http://worldcat.org/isbn/0309072093

Abstract:

Stone matrix asphalt (SMA) has been used in the United States since 1991. To date, almost all of the SMA mixes have had a nominal maximum aggregate size (NMAS) of either 12.5 or 19.0 mm. These two NMASs have been predominant because they conform to information obtained from European experiences with SMA. However, a "fine" SMA mix (for the purpose of this study defined as having an NMAS of 4.75 or 9.5 mm) could be beneficial because it could be placed in thinner lifts and should be more workable. A study was conducted to evaluate the potential of designing fine SMAs and to compare these fine SMAs with more conventional SMA mixes (larger NMASs). Study data indicate that these fine SMAs could be successfully designed to have stone-on-stone contact. Rut testing with the Asphalt Pavement Analyzer confirmed that the designed fine SMA mixes were rut resistant. Permeability testing indicated that these fine SMA mixes are less permeable than conventional SMA mixes at similar void levels and thus should be more durable. Based on information from this study, fine SMAs are a viable option for thin overlays.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1749, Maintenance of Transportation Pavements and Structures.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Cooley Jr, L A
Brown, E R

Pagination:

p. 46-52

Publication Date:

2001

Serial:

Transportation Research Record

Issue Number: 1749
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309072093

Features:

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

Uncontrolled Terms:

Thin lift construction

Subject Areas:

Design; Highways; Maintenance and Preservation; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials; I60: Maintenance

Files:

TRIS, TRB, ATRI

Created Date:

Aug 23 2001 12:00AM

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