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Title:

RELATIONSHIP BETWEEN HIGH-PRESSURE GEL PERMEATION CHROMATOGRAPHY DATA AND THE RHEOLOGICAL PROPERTIES OF ASPHALTS

Accession Number:

00472623

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/309041163

Abstract:

Much effort has been expended by researchers in the development of new procedures for characterizing asphalt cements. Such procedures have long been needed to improve the day-to-day monitoring of asphalt composition. Furthermore, the development of these procedures is crucual to the long-term research effort directed at improving the quality of asphalt binders. High-pressure gel permeation chromatography (HPGPC) is one of the procedures currently being evaluated that has produced encouraging results. Some evidence has been presented to indicate that this procedure may be useful for predicting the performance of asphalts. However, some of the results from HPGPC analysis are not fully understood; for example, the relationship between HPGPC data and viscosity is still obscure. Consequently, the main objective of this project was to study the relationship of HPGPC data to viscosity and penetration. In this project, the three products of a residuum oil supercritical extraction refinery unit were blended to produce asphalts of varying composition. Thus, these asphalts are all from the same crude source and refinery process; any variation in their rheology is directly attributable to changes in their chemical composition. It was established that there is a quantitative relationship between HPGPC data and the rheological properties of the blended asphalts. In addition, it was determined that changes in the asphalt composition were accompanied by corresponding changes in the HPGPC profile. Therefore, it was concluded that HPGPC may be useful for monitoring changes in asphalt properties that occur during the construction process and subsequent exposure to the elements.

Supplemental Notes:

Publication of this paper sponsored by Committee on Characteristics of Bituminous 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 #:

01418832

Authors:

Garrick, Norman W
Wood, Leonard E

Pagination:

pp 35-41

Publication Date:

1986

Serial:

Transportation Research Record

Issue Number: 1096
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

65th Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia, United States
Date: 1986-1-13 to 1986-1-16

ISBN:

309041163

Media Type:

Print

Features:

Figures (4) ; References (12) ; Tables (8)

Uncontrolled Terms:

Quality

Old TRIS Terms:

Subject Areas:

Highways; Materials; I31: Bituminous Binders and Materials

Files:

TRIS, TRB

Created Date:

Aug 31 1987 12:00AM

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