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Title:

NET ADSORPTION OF ASPHALT ON AGGREGATE TO EVALUATE WATER SENSITIVITY

Accession Number:

00625704

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309054028

Abstract:

The net adsorption test was developed to evaluate the affinity of asphalt for aggregate and to determine the water sensitivity of a given asphalt-aggregate pair. The development of the test occurred in two steps. First, an initial screening of Strategic Highway Research Program Material Reference Library (MRL) aggregates (both siliceous and calcareous) was performed with three different MRL asphalts. The initial testing used 5 g of -40 to +80 mesh washed aggregates. Second, a scaled-up version of the test was developed that had a sample size of 50 g of minus No. 4 fraction aggregate and used commercially available equipment. The aggregate properties predominated in this test, showing a stronger influence than the asphalt on the initial amount of asphalt adsorbed, the amount of asphalt desorbed by water, and the amount of asphalt remaining, the net adsorption. The aggregate conditions recommended for the test use the minus No. 4 aggregate fraction (unwashed). These conditions yield results most representative of the aggregate used in actual pavement.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1362, Aggregate and Pavement-Related Research. 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 #:

01405044

Language:

English

Authors:

Curtis, C W
Stroup-Gardiner, M
Brannan, C J
Jones IV, D R

Pagination:

p. 10-19

Publication Date:

1992

Serial:

Transportation Research Record

Issue Number: 1362
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309054028

Features:

Figures (2) ; References (6) ; Tables (8)

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways; Materials; I31: Bituminous Binders and Materials; I36: Aggregates

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 1993 12:00AM

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