|
|
|
Title: FROST-HEAVING PRESSURES
Accession Number: 00237189
Record Type: Component
Abstract: CONSIDERABLE PRESSURE DEVELOPS ON FREEZING A SATURATED SOIL IN AN OPEN SYSTEM FROM THE TOP DOWN. THE PRESSURE IS THE RESULT OF THE SURFACE ENERGY OF A CURVED ICE-WATER INTERFACE. THE CURVATURE OF THE INTERFACE IS NECESSARY FOR ICE TO PROLIFERATE THROUGH THE SOIL PORES AND IS RELATED TO THE PORE SIZE DISTRIBUTION OF THE SOIL. THE TEST CHAMBER USED IS DESIGNED TO MINIMIZE THE FRICTION BETWEEN SOIL AND WALL. HEAT REMOVAL IS ACCURATELY CONTROLLED BY THERMOELECTRIC COOLING. A LOAD CELL PLACED ON TOP OF THE SAMPLE IS USED TO MEASURE THE PRESSURE DEVELOPED AND PREVENTS HEAVING OF THE SAMPLE. MEASUREMENT OF THE PRESSURE ON A LAYERED SAMPLE SHOWED THAT THE PRESSURE DEVELOPS AT THE FREEZING FRONT. RESULTS ON SEVERAL SOILS INDICATE THAT EACH SOIL DEVELOPS A CHARACTERISTIC MAXIMUM PRESSURE. FOR EACH SOIL USED, THE WATER CONTENT VS TENSION CURVE IS GIVEN AND THE MAXIMUM PRESSURE IS RELATED TO THIS CURVE. THE RESULTS SUGGEST THAT THE WATER CONTENT CURVE MIGHT BE A RELIABLE CRITERION FOR FROST SUSCEPTIBILITY. /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 Title: Monograph Accession #: 01410057
Authors: Hoekstra, PChamberlain, EFrate, TPagination: pp 28-38
Publication Date: 1965
Serial: Media Type: Digital/other
Features: Figures
(10)
; References
(16)
TRT Terms: Old TRIS Terms: Subject Areas: Geotechnology; Highways
Files: TRIS, TRB
Created Date: Feb 9 1994 12:00AM
More Articles from this Serial Issue: |
