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Title:

USE OF RUBBER IN ASPHALT PAVEMENTS: KANSAS EXPERIENCE

Accession Number:

00669043

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/030905513X

Abstract:

From 1990 to 1992 eight rubber hot bituminous mix projects were constructed on the Kansas Department of Transportation highway system. Four have been dry and four have been of the wet process. Two projects have been administered through normal bid procedures. Six have been constructed through change orders and negotiated prices. Approximately 616 tons of rubber was used in the hot mix overlays. Preliminary conclusions are as follows: (a) From the crack survey results, it is apparent that rubber may not inhibit the development of cracks in the higher-density mixes. However, even though the results are still preliminary, the gap-graded mixes show the greatest potential in reducing the amount of cracking. (b) Rubber in a gap-graded mix will prevent asphalt draining off the aggregates during construction. This will allow a thicker film thickness on the aggregates. (c) None of the rubber projects have rutted, but neither have the asphalt-only control sections. (d) On hot recycle projects, rubber addition rates should be based on the weight of dry virgin aggregate and recycled asphalt pavement. (e) Rubber absorbs a large portion of an RA-100 in a hot recycle mix. An AC-5 with rubber will reduce the asphalt absorption and improve the aggregate coating.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1436, Asphalt Concrete Mix Materials. 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 #:

01401249

Language:

English

Authors:

Fager, Glenn A

Pagination:

p. 88-97

Publication Date:

1994-10

Serial:

Transportation Research Record

Issue Number: 1436
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

030905513X

Features:

Figures (3) ; References (2) ; Tables (10)

Subject Areas:

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

Files:

TRIS, TRB

Created Date:

Nov 23 1994 12:00AM

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