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Title:

MECHANICAL PROPERTIES OF COMPACTED SOILS

Accession Number:

00235373

Record Type:

Component

Abstract:

THE STUDY DESCRIBES THE RESPONSE OF HIGHWAY SUBGRADE MATERIALS BY FUNDAMENTAL STRENGTH PROPERTIES WHICH CAN BE UTILIZED TO EVALUATE CHANGES IN THE STRENGTH AND DEFORMATION CHARACTERISTICS OF SOILS PRODUCED BY THE TYPE AND AMOUNT OF COMPACTION ENERGY APPLIED. THE DENSIFICATION OF SOILS WAS STUDIED FROM A MATERIAL SCIENCE POINT OF VIEW USING DATA FROM FAILURE AND NONFAILURE TYPES OF LABORATORY TESTS. FOUR SOILS REPRESENTATIVE OF THE NATURAL SOILS USED FOR HIGHWAY SUBGRADES WERE INVESTIGATED. EXPERIMENTS WERE PERFORMED TO INVESTIGATE THE APPLICATION OF THE LINEAR VISCOELASTIC THEORY AND MECHANISTIC MODELS TO UNSATURATED SOILS AND TO DETERMINE THE LIMITATIONS OF SUCH APPROACHES TO HIGHWAY COMPACTION PROBLEMS. THREE TO FIVE LEVELS OF IMPACT COMPACTION ENERGY WERE USED TO PREPARE THE TEST SPECIMENS OVER A RANGE OF MOLDING WATER CONTENTS OR SATURATIONS. THE UNCONFINED CONSTANT-LOAD CREEP TEST WAS THE PRINCIPAL TEST PERFORMED TO INVESTIGATE THE MECHANICAL PROPERTIES OF THE COMPACTED SOILS ON THE PHENOMENOLOGICAL LEVEL. FAILURE TESTS WERE ALSO PERFORMED TO EVALUATE THE MODULUS OF DEFORMATION AND THE ULTIMATE UNCONFINED COMPRESSIVE STRENGTH. THE STUDY HAS UTILIZED THE ELECTRICAL-MECHANICAL ANALOGY AND THE CONCEPT OF THE COMPLEX ELASTIC MODULUS TO DEFINE THE MECHANICAL PROPERTIES OF COMPACTED SOILS. DATA HAVE BEEN OBTAINED TO VALIDATE THE EVALUATION OF SOIL COMPACTION BY THE REHOLOGICAL STRENGTH PARAMETERS. /AUTHOR/

Supplemental Notes:

Paper sponsored by Committee on Compaction and presented at the 47th Annual Meeting. 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 #:

01410180

Authors:

Pagen, Charles A
Jagannath, Banad N

Pagination:

pp 13-26

Publication Date:

1968

Serial:

Highway Research Record

Issue Number: 235
Publisher: Highway Research Board

Media Type:

Print

Features:

Figures (7) ; References (12) ; Tables (1)

Old TRIS Terms:

Subject Areas:

Design; Geotechnology; Highways

Files:

TRIS, TRB

Created Date:

Jan 31 1994 12:00AM

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