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Title: AN EXPERIMENTAL STUDY OF SUBPRESSURE IN A FREEZING SOIL SYSTEM
Accession Number: 00237199
Record Type: Component
Abstract: A SERIES OF SOIL FREEZING EXPERIMENTS SIMULATING THE CONDITIONS OF NATURAL SOIL FREEZING IN NEW JERSEY WAS CONDUCTED AT THE FROST ACTION RESEARCH LABORATORY OF RUTGERS UNIVERSITY. THE STUDY CORRELATED THE OBSERVED PHENOMENON OF INDUCED SUBPRESSURE IN FREEZING SOIL TO ONE OF THE MAIN PHYSICAL PROPERTIES OF THE SOIL, POROSITY /WHICH IN A WAY REPRESENTS OTHER PHYSICAL PROPERTIES SUCH AS PORE SIZE AND SPECIFIC SURFACE/ AND THE FREEZING THERMAL GRADIENT, THE CHIEF CAUSE WHICH TRIGGERS THE WHOLE FREEZING MOISTURE-MIGRATION PROCESS. THE EFFECT OF THE TIME ELEMENT INVOLVING THE DEVELOPMENT OF THE SUBPRESSURE IN AN UNSTEADY STATE OF THERMAL CONDITION WAS RECOGNIZED. THE FINDINGS SHOW THE RELATIONSHIPS BETWEEN THE FOLLOWING FACTORS' /1/ THE MAXIMUM INDUCED SUBPRESSURE AND POROSITY OF THE SOIL, /2/ THE MAXIMUM SUBPRESSURE AND FROST DEPTH, /3/ THE MAXIMUM SUBPRESSURE AND THE SURFACE SUBFREEZING TEMPERATURE, /4/ THE MAXIMUM SUBPRESSURE AND THE FREEZING THERMAL GRADIENT, AND /5/ THE SUBPRESSURE AT A POINT AND DEPTH /PRESSURE PROFILE/. THE STUDY ALSO INCLUDED THE CORRELATION OF THE MAXIMUM INDUCED SUBPRESSURE TO THE FREEZING GROUND SURFACE TEMPERATURE AND FREEZING THERMAL GRADIENT. RELATIONSHIPS BETWEEN THE MAXIMUM INDUCED SUBPRESSURE AND FROST DEPTH WERE STUDIED.
Supplemental Notes: Paper sponsored by Committee on Frost Action and presented at the 45th 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 Title: Monograph Accession #: 01410082
Authors: Rao, R N SPagination: pp 18-24
Publication Date: 1966
Serial: Media Type: Print
Features: Figures
(6)
; References
(5)
TRT Terms: Geographic Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways; Safety and Human Factors
Files: TRIS, TRB
Created Date: Nov 7 1994 12:00AM
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