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Title:

EFFECT OF MOISTURE ON THE STRUCTURAL PERFORMANCE OF A CRUSHED-LIMESTONE ROAD BASE

Accession Number:

00468688

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309045010

Abstract:

A series of repeated load triaxial tests on a crushed-rock aggregate is described, including variations in grading and degree of compaction as well as moisture content. The effects of these variables are discussed and it is found that elastic stiffness tends to decrease slightly with increased moisture content for broadly graded materials. The influence of density is negligible, and that of grading minor, which results in some stiffness reduction as the fines content increases. The accumulation of permanent strain under multicycle loading is found to be strongly dependent on density; denser material performs better. Grading has a minor effect. Increased moisture content results in substantially increased straining. The value of suction, which could exist in a granular material, is then explored indirectly by means of unconfined compression tests, and its effect on drainage is noted. Permeability measurements are given and their possible effect on drainage considered. Finally, computations are presented that illustrate the influence of partial and full saturation of a base layer of a pavement structure.

Supplemental Notes:

Publication of this paper sponsored by Committee on Strength and Deformation Characteristics of Pavement Sections. 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 #:

01418084

Authors:

Thom, N H
BROWN, S F

Pagination:

pp 50-56

Publication Date:

1987

Serial:

Transportation Research Record

Issue Number: 1121
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

66th Annual Meeting of the Transportation Board

Location: Washington District of Columbia, United States
Date: 1987-1-12 to 1987-1-15

ISBN:

0309045010

Media Type:

Print

Features:

Figures (10) ; References (9) ; Tables (2)

Uncontrolled Terms:

Computation; Suction

Old TRIS Terms:

Subject Areas:

Design; Highways; Hydraulics and Hydrology; Pavements; I22: Design of Pavements, Railways and Guideways

Files:

TRIS, TRB, ATRI

Created Date:

May 31 1988 12:00AM

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