CHANGES IN VOLUME OF SOIL AFTER REPEATED FREEZING AND THAWING
VOLYMFOERAENDRINGAR HOS JORDARTER EFTER UPPREPAD FRYSNING OCH TINING
The report describes model tests performed to obtain the magnitude of the net increase in volume following freezing-thawing cycles. Soils of varying composition were studied. Characteristic soil properties, such as distribution of grain size, capillarity, maximum dry density, mineralogical composition and shape of particles were determined at the beginning and the end of the tests. The soil samples were compacted in cylinders and the freezing was obtained by refrigeration plates on the upper surfaces. Capillary suction of water was made possible from a water level retainer. Temperatures and volumes were registered continuously. The samples were compacted to various dry densities and during the tests the loading on the sample was corresponding to that of the upper strata pressure found in naturally stratified soil or at a depth of one metre in a fill. Fine-grain soil proved to have a greater increase in volume than coarse-grain soil. Other factors resulting in a greater increase in volume were: larger content of clay, high degree of compaction and non-spherical shape of particles. The rate of freezing had no effect on the final outcome. Fine-grain sedimentary soils often had a net increase of volume exceeding 10%, while sandy silty moraine had 3-5%. /TRRL/
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Corporate Authors:
Stockholm University, Sweden
Kvartaergenlogiska Institution, P.O. Box 6701
S-11385 Stockholm, Sweden -
Authors:
- Hedberg, D
- Publication Date: 1976
Language
- Swedish
Media Info
- Features: Figures; References; Tables;
- Pagination: 109 p.
Subject/Index Terms
- TRT Terms: Clay soils; Compaction; Freeze thaw durability; Laboratories; Particles; Properties of materials; Shape; Soil compaction; Soil mechanics; Soil tests; Soils; Tests; Thaw; Theses; Volume; Volume changes
- Uncontrolled Terms: Increase; Model tests; Particle size distribution; Soil properties
- Old TRIS Terms: Freeze thaw effects; Freezing thawing effects; Particle shapes
- Subject Areas: Geotechnology; Highways; Materials; I26: Water Run-off - Freeze-thaw;
Filing Info
- Accession Number: 00149897
- Record Type: Publication
- Source Agency: Swedish National Road and Traffic Research Institute
- Report/Paper Numbers: Monograph
- Files: ITRD, TRIS
- Created Date: Jun 17 1977 12:00AM