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Title:

SIGNIFICANCE OF CYCLIC CONFINING STRESS IN REPEATED-LOAD TRIAXIAL TESTING OF GRANULAR MATERIAL

Accession Number:

00126819

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/isbn/0309023882

Abstract:

A number of research projects have been concerned with determining the nonlinear stress-strain characteristics of granular materials by using repeated-load triaxial tests. Improvements in materials testing equipment have lead to experiments in which the confining stress and the vertical stress were applied cyclically. There is an apparent difference in the resilient Poisson's ration determined under constant and under variable confining stresses. This difference is best explained by considering the behavior of granular materials in terms of volumetric stress-strain and shear stress-strain relationships. By doing this, one can show that Poisson's ratio is a function of the ratio of volumetric strain to shear strain. Resilient strains were investigated separetely from permanent strain because the permanent strain developed depended on the loading history of the sample and because the resilient behavior was not affected by any previous subfailure stress applications. To keep materials testing techniques simple, a constant confining stress equal to the mean value of a cyclic confining stress can be considered to be equal to the cyclic confining stress for determining the resilient modulus and permanent deformation.

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 #:

01411398

Authors:

BROWN, S F
HYDE, AFL

Pagination:

pp 49-58

Publication Date:

1975

Serial:

Transportation Research Record

Issue Number: 537
Publisher: Transportation Research Board
ISSN: 0361-1981

Conference:

54th Annual Meeting of the Transportation Research Board

Location: Washington District of Columbia
Date: 1975-1-13 to 1975-1-17

ISBN:

0309023882

Media Type:

Print

Features:

Figures (11) ; References (8) ; Tables (2)

Old TRIS Terms:

Subject Areas:

Geotechnology; Highways

Files:

TRIS, TRB

Created Date:

Dec 16 1975 12:00AM

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