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Title:

LABORATORY EVALUATION OF AN ASPHALT-RUBBER SAL

Accession Number:

00459476

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309039509

Abstract:

The evaluation of a mixture of asphalt and rubber to serve as a strain attenuating layer (SAL) in asphaltic concrete overlays is discussed. The mixture consisted of a blend of asphalt and rubber and the SAL was made with and without stone chips. The tests used for the evaluation were developed to simulate certain pavement loadings and they were classified as repeated vertical shear, static horizontal shear, repeated horizontal shear, and flexure fatigue. Calculations were carried out to determine the effects of the SAL on stresses in the laboratory models and also in flexible layered pavement systems. The laboratory test results showed that the layers without the stone chips had the best performance. The calculations for the laboratory and pavement models indicated that the greatest effect brought about by the attenuating layer was in reduction of horizontal shear at the overlay-asphalt-rubber layer interface and that there must be a limiting thickness of that layer to prevent tensile overstress of the bottom surface of the asphaltic concrete overlay.

Supplemental Notes:

Publication of this paper sponsored by Committee on Nonbituminous Components of Bituminous Paving Mixtures. 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 #:

01419475

Authors:

Jimenez, R A
Meier Jr, W R

Editors:

Kaplan, Elizabeth W

Pagination:

pp 86-96

Publication Date:

1985

Serial:

Transportation Research Record

Issue Number: 1034
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309039509

Media Type:

Print

Features:

Figures (12) ; References (12) ; Tables (6)

Uncontrolled Terms:

Flexural fatigue

Old TRIS Terms:

Subject Areas:

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

Files:

TRIS, TRB

Created Date:

Oct 31 1986 12:00AM

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