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Title:

COMPARING FIELD AND LABORATORY AGING OF BITUMENS ON A KINETIC BASIS

Accession Number:

00636330

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309054621

Abstract:

Studying accelerated bitumen aging in the laboratory on a kinetic basis leads to evaluating the activation energy of oxidation reactions from developments in certain characteristics such as asphaltene content, penetration, and ring-and-ball softening point. In Belgium, temperatures 5 mm deep in bituminous road pavements have been measured and recorded for several years, thus making it possible to draw a frequency distribution curve of those temperatures. From this distribution and the activation energy evaluated in the laboratory, it has been established that the annual value of kinetic mean temperature lies around 19.5 deg C for field aging. Using measurements of bitumen chanacteristics published in the literature, and referring to the original condition as well as the conditions at the time of opening to traffic and at various stages of aging, the reaction constants can be estimated for the road pavements under consideration. This approach enables the estimated constants to be related to the specific climatic environments of the various countries or regions concerned.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1391, Asphalt Cement and Asphalt/Polymer Blends. 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 #:

01403229

Language:

English

Authors:

Verhasselt, A F
Choquet, F S

Pagination:

p. 30-38

Publication Date:

1993

Serial:

Transportation Research Record

Issue Number: 1391
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309054621

Features:

Figures (7) ; References (11) ; Tables (5)

Uncontrolled Terms:

Field measurements

Old TRIS Terms:

Subject Areas:

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

Files:

TRIS, TRB, ATRI

Created Date:

Sep 14 1993 12:00AM

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