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Title:

RUTTING PROPERTIES OF A DUNE-SAND PAVING MIXTURE (DISCUSSION, CLOSURE)

Accession Number:

00390785

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309035546

Abstract:

The results of a laboratory evaluation of a dune-sand for use as a base course in a flexible pavement are presented. The principal part of the study was concerned with the development of an equation for relating permanent deformation (rutting) to the combined effects of (a) number of load applications, (b) temperature, (c) surface pressure, and (d) dynamic modulus of elasticity of the supporting subgrade. The mixture evaluated was a dune-sand from Arizona with asphalt of the AR-4000 grade at an optimum content of 14 percent by weight of sand. Permanent deformation specimens were 18 in. in diameter and the height varied from 2 to 6 in. Variation in subgrade support was obtained with synthetic rubber pads 18 in. in depth and 6 in. in height having estimated moduli of 8,000, 20,000, and 30,000 psi. The constant load system operated at a frequency of 11.5 Hz, and contact areaa was varied to yield pressures of 38.5, 61.6, and 98.0 psi. It was found that the optimum specimen height was 4 in. if failure was assumed to have occurred when the rut was 0.4 in., in depth. For this constant specimen height, an equation relating load repetitions (N) to temperature (T), stress (sigma), and subgrade modulus (ES) is presented. (Author)

Supplemental Notes:

Publication of this paper sponsored by Committee on Characteristics of Bituminous Paving Mixtures to Meet Structural Requirements. 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 #:

01420421

Authors:

Al-Juraiban, S A
Jimenez, R A

Editors:

McLaughlin, Mary

Discussers:

Tunnicliff, David G

Pagination:

pp 11-20

Publication Date:

1983

Serial:

Transportation Research Record

Issue Number: 911
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

0309035546

Media Type:

Print

Features:

Figures (15) ; Photos (3) ; References (24) ; Tables (4)

Uncontrolled Terms:

Rut

Old TRIS Terms:

Subject Areas:

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

Files:

TRIS, TRB

Created Date:

Dec 30 1984 12:00AM

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