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Title:

STONE MASTIC ASPHALT TRIALS IN ONTARIO

Accession Number:

00646157

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309055008

Abstract:

Stone mastic asphalt (SMA) use in Europe (split mastic in Germany) and Japan, because of excellent frictional properties, plastic deformation resistance, fatigue endurance, and durability, formed the basis for 1990 and 1991 technology transfer demonstration trials. The SMA work incorporated international experience using local aggregates, fillers, engineered asphalt cements, and fibers. SMA is a gap-graded, dense, hot-mix asphalt with a large proportion of coarse aggregate (passing 2 mm limited to about 20%, all crushed material) and a rich asphalt cement/filler mastic. The coarse aggregate forms a high-stability structural matrix. The engineered asphalt cement, fine aggregate, filler, and stabilization additive (typically fiber) form a mastic that binds the structural matrix together. Plant and placement trials of two preliminary SMA designs incorporating fly ash filler and fiber indicated no transportation, placement, or compaction problems, but care must be taken to ensure proper mixing of any fiber added. From this demonstration work, SMA-modified Marshall mix design procedures were developed and four highway trial sections completed in 1991. Quality assurance testing indicated no significant problems in meeting SMA mix design requirements once production parameters were established. Monitoring and characterization of these SMA pavements are in progress, with very favorable rutting resistance and surface texture performance shown.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1427, Pavement Surface Courses, Stone Mastic Asphalt Pavements, and Asphalt Concrete Recycling. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

Monograph Accession #:

01403263

Language:

English

Authors:

Emery, John J
Schenk, Walter
Carrick, John J
Davidson, J Keith
MacInnis, W Keith
Kennepohl, Gerhard J A

Pagination:

p. 47-53

Publication Date:

1993

Serial:

Transportation Research Record

Issue Number: 1427
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309055008

Features:

Figures (2) ; Photos (8) ; References (18) ; Tables (4)

Uncontrolled Terms:

Marshall mix design

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways; Materials; Pavements; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials

Files:

TRIS, TRB, ATRI

Created Date:

Apr 22 1994 12:00AM

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