TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

IMPROVED RICE METHOD FOR DETERMINING THEORETICAL MAXIMUM SPECIFIC GRAVITY OF ASPHALT PAVING MIXTURES

Accession Number:

00625402

Record Type:

Component

Availability:

Find a library where document is available


Order URL: http://worldcat.org/isbn/0309052173

Abstract:

The Rice method (ASTM D2041) is used for determining the theoretical maximum specific gravity of asphalt paving mixtures, which is one of the main test parameters used for mix design and construction quality control. The repeatability and reproducibility of the Rice method is not considered satisfactory, especially when highly absorptive aggregates are used in the mixture. Such aggregates can absorb water during the vacuuming phase of the Rice method. This necessitates the use of a supplementary (dry-back) procedure that is even more prone to testing errors. There is a need to improve the Rice method to avoid these problems. Two dense-graded asphalt paving mixtures (representing low- and high-absorption aggregates) and one AC-20 asphalt cement were used. Three factors (temperature, residual pressure, and vacuuming time) affecting the results from the Rice method were investigated at three levels each, involving some 108 tests. From these test data, optimum levels have been recommended for temperature, residual pressure, and vacuuming time. Use of these optimum levels is expected to improve the reproducibility of the Rice method, especially when highly absorptive aggregates are used in the asphalt paving mixtures. The improved Rice method is also likely to minimize the necessity of using the supplementary procedure.

Supplemental Notes:

This paper appears in Transportation Research Record No. 1353, Asphalt Mixture Design. 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 mixture design

Monograph Accession #:

01405031

Language:

English

Authors:

Kandhal, Prithvi S
Khatri, Maqbool A

Pagination:

p. 9-14

Publication Date:

1992

Serial:

Transportation Research Record

Issue Number: 1353
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309052173

Features:

References (5) ; Tables (7)

Old TRIS Terms:

Subject Areas:

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

Files:

TRIS, TRB, ATRI

Created Date:

Nov 25 1993 12:00AM

More Articles from this Serial Issue: