TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

TRANSIENT TEMPERATURE INFLUENCES ON SOIL BEHAVIOR

Accession Number:

00237768

Record Type:

Component

Abstract:

IN CASES WHERE CHANGES IN TEMPERATURE AFFECT SOIL RESPONSES SUCH AS STRENGTH OF COMPACTED SUBGRADES AND EMBANKMENTS, CHANGES IN COMPACTION PROPERTIES DURING STABILIZATION DUE TO MOISTURE MIGRATION, AND CHANGES IN DEFORMATION OF STRESSED CLAY SOIL LAYERS, THE ABILITY TO PREDICT TEMPERATURE PROFILES WITHIN THE AFFECTED AREAS BECOMES HIGHLY DESIRABLE. THIS PAPER ANALYZES THE TEMPERATURE PROFILE THAT IS DEVELOPED IN SOIL SAMPLES FOR CONDITIONS OF TRANSIENT TEMPERATURE CHANGES AT ONE BOUNDARY SURFACE. THE STUDY IS DIVIDED INTO TWO PARTS. THE FIRST IS CONCERNED WITH TEMPERATURE DISTRIBUTION AS AFFECTED BY LOCAL INHOMOGENEITIES FOR NONSATURATED SOILS. CLOSE STUDY IS MADE ON MOISTURE CHANGES AS AFFECTED BY THIS SURFACE TEMPERATURE CHANGE. THE SECOND PART IS CONCERNED WITH THE PATTERN OF TEMPERATURE INCREASE AND DECREASE IMPOSED ON A STRESSED, SATURATED SOIL. FOR THIS CASE THE THEORY OF HEAT CONDUCTION WAS USED TO PREDICT THE TEMPERATURE DISTRIBUTION WITHIN THE SOIL SAMPLE. FOR THE STUDY OF THE FIRST PART, A PARABOLIC FORM OF TEMPERATURE INCREASE WAS APPLIED AT THE UPPER BOUNDARY SURFACE OF AN INSULATED CYLINDER TO AN UNSATURATED SAMPLE OF A CLAY SOIL COMPACTED AT VARYING MOISTURE CONTENTS AND DENSITY STATES. THE RESULTANT TEMPERATURE-TIME-SPACE DISTRIBUTION CURVES WERE ANALYZED AND THE RESULTANT MOISTURE CONTENT DISTRIBUTION CURVES WERE COMPARED WITH THE INITIAL MOISTURE CONTENT DISTRIBUTION CURVES. IN THE CONSTANT STRESS TESTS, A THERMAL PULSE WAS APPLIED AT THE UPPER SURFACE OF A SATURATED CONSOLIDATED SOIL, AND THE RESULTANT TEMPERATURE-TIME-SPACE DISTRIBUTION WAS DETERMINED. THE TESTS INDICATE THAT ESTABLISHMENT OF TEMPERATURE PROFILES ENABLES CORRELATION TO BE MADE BETWEEN SURFACE TEMPERATURE CHANGES AND MOISTURE CHANGES ON A TRANSIENT BASIS. WHERE SURFACE BOUNDARY CONDITIONS CAN BE ACCURATELY MODELED, HEAT CONDUCTION THEORY, ASSUMING A SAMPLE HOMOGENEITY, CAN BE USED TO PREDICT THESE TEMPERATURE PROFILES. /AUTHOR/

Supplemental Notes:

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 #:

01410773

Corporate Authors:

Highway Research Board (HRB)

Washington, DC

Authors:

Paaswell, Robert E

Pagination:

pp 220-230

Publication Date:

1969

Serial:

Highway Research Board Special Report

Issue Number: 103
Publisher: Highway Research Board

Conference:

Proceedings of an International Conference Held at Washington, D.C., January 16 1969 With the Support of the National Science Foundation

Location: Washington DC, United States
Date: 1969-1-16 to 1969-1-16
Sponsors: National Research Council; National Science Foundation

Media Type:

Digital/other

Features:

Figures (5) ; References (6) ; Tables (3)

Subject Areas:

Geotechnology; Highways

Files:

TRIS, TRB, ATRI

Created Date:

Aug 25 1994 12:00AM

More Articles from this Serial Issue: