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Title:

ADSORPTION BEHAVIOR OF ASPHALT MODELS AND ASPHALTS ON SILICEOUS AND CALCAREOUS AGGREGATES

Accession Number:

00622184

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309051630

Abstract:

The adsorption of seven single model species representative of functionalities prevalent in asphalt on siliceous and calcareous aggregates was examined. The seven model species were ranked based on their Langmuir monolayer adsorption amounts as well as their adsorption amounts on one or two grams of aggregates. The aggregates used were gravels, limestones, and greywacke. Benzoic acid showed the greatest affinity for the aggregates tested. In addition, the adsorption and desorption behavior of three asphalts with substantially different chemical compositions was determined on a single siliceous aggregate. Differences observed in their behaviors may be attributed to differences in their chemical compositions. The adsorption and water desorption behavior of an AR-4000 asphalt was also determined on three different aggregates: limestone, gravel, and greywacke. Substantial differences in the amount adsorbed and desorbed as well as the shapes of their adsorption curves were observed. Limestone adsorbed the most asphalt and retained the largest amount of asphalt after desorption by water. Limestone desorbed the most asphalt in the presence of water, and greywacke desorbed the least. The precoating of antistripping agent on greywacke resulted in less asphalt desorption by water in comparison with coadsorbing antistripping agent with asphalt or with no antistripping agent being present in the system.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1323, Asphalt Mix Materials 1991. 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 mix materials, 1991

Monograph Accession #:

01407199

Authors:

Brannan, C J
Jeon, Y W
Perry, L M
Curtis, C W

Pagination:

p. 10-21

Publication Date:

1991

Serial:

Transportation Research Record

Issue Number: 1323
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309051630

Features:

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

Uncontrolled Terms:

Siliceous aggregates

Old TRIS Terms:

Subject Areas:

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

Files:

TRIS, TRB, ATRI

Created Date:

May 31 1992 12:00AM

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