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Title:

INVESTIGATION OF STONE MATRIX ASPHALT MORTARS

Accession Number:

00728397

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Find a library where document is available


Order URL: http://worldcat.org/isbn/030905902X

Abstract:

The use of stone matrix asphalt (SMA) has continued to increase in the United States since its initial application in 1991. This preference for SMA has been linked to its ability to withstand heavy traffic without rutting. The antirutting capability of SMA is normally accredited to the presence of a stone-on-stone aggregate skeleton in the mixture. However, the mortar in an SMA mixture is also important. The mortar is composed of fine aggregate, filler, asphalt cement, and a stabilizing additive. Work to characterize SMA mortars is detailed. For testing purposes, the mortar was broken into separate phases, total mortar and fine mortar. The fine mortar was tested using the Superior Performing Asphalt Pavements system (Superpave) binder tests. The total mortar was tested using the bending beam rheometer, resilient modulus, indirect tensile test, and Brookfield viscometer. The results indicate that the fine and total mortars are closely related. In addition, it was determined that at least some of the Superpave tests can be used to characterize SMA mortars. It is recommended that further testing be completed and specification criteria be established for the mortar.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1530, Recycled Rubber, Aggregate, and Filler in Asphalt Paving Mixtures.

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Brown, E R
Haddock, J E
Crawford, C

Pagination:

p. 95-102

Publication Date:

1996

Serial:

Transportation Research Record

Issue Number: 1530
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

030905902X

Features:

Figures (3) ; References (23) ; Tables (10)

Uncontrolled Terms:

Indirect tensile test; Rut resistance

Old TRIS Terms:

Subject Areas:

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

Files:

TRIS, TRB

Created Date:

Nov 8 1996 12:00AM

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