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Title:

ASPHALT-RUBBER INTERACTIONS

Accession Number:

00646112

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309055652

Abstract:

Three experiments were designed to evaluate the influence of increasing percentages of rubber (0, 10, 15, and 20% by weight of binder) and rubber type (passenger and industrial tires), pretreatment of rubber (none, tall oil pitch), and asphalt chemistry (Strategic Highway Research Program materials reference library asphalts AAD, AAG, AAF, and AAM) on asphalt-rubber interactions. Viscosity was measured by a Brookfield rotational viscometer; testing variability was also estimated. Untreated rubber was included to represent interaction characteristics representative of the wet process. Treated rubber was included as a way of stabilizing the rubber before use in the dry process. Results confirmed that rubber (either passenger or industrial tires) reacts more readily with a softer grade of asphalt from a given refinery. Pretreatment of passenger tire rubber with various percentages of tall oil pitch significantly reduces both the viscosity and the influence of aging. Pretreatment of industrial tire rubber appears to have a significant effect only when lighter grades of binder are used. The same rubber will react differently with various sources of the same grade of asphalt cement. This is a function of the molecular weight of the asphalt cement, which is related to solubility, and the viscosity of the binder at the storage temperature, which is related to the rate of penetration and swell.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1417, Asphalt Concrete 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 Title:

Asphalt concrete mixtures

Monograph Accession #:

01398728

Language:

English

Authors:

Stroup-Gardiner, Mary
Newcomb, David E
Tanquist, Bruce

Pagination:

p. 99-108

Publication Date:

1993

Serial:

Transportation Research Record

Issue Number: 1417
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309055652

Features:

Figures (8) ; References (8) ; Tables (3)

Uncontrolled Terms:

Interactions; Rubber content

Old TRIS Terms:

Subject Areas:

Highways; Materials; I31: Bituminous Binders and Materials

Files:

TRIS, TRB

Created Date:

Apr 18 1994 12:00AM

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