THE RESISTANCE OF SOIL STRUCTURE TO CONSOLIDATION
THIS PAPER DESCRIBES A SERIES OF TESTS CARRIED OUT AT CONSTANT RATES OF COMPRESSION VARYING FROM 0.16 TO 8 PER CENT PER HOUR IN WHICH PORE PRESSURES WERE MEASURED. THE TESTS WERE PERFORMED ON SPECIMENS OF LEDA CLAY OBTAINED AT A DEPTH OF 53 FT FROM A SEWAGE PLANT EXCAVATION IN OTTAWA. THE CLAY HAS A SENSITIVITY GREATER THAN 50, A LIQUID LIMIT OF 31 PER CENT, AND A PLASTIC LIMIT OF 23 PER CENT. THE NATURAL WATER CONTENT AVERAGES 55 PER CENT AND THERE IS 65 PER CENT OF CLAY SIZE MATERIAL. THE EFFECTIVE STRESS-COMPRESSION CURVES ARE COMPARED WITH AN AVERAGE CURVE OBTAINED BY INCREMENTAL LOADINGS. IT IS CONCLUDED THAT THE COMPRESSIBILITY OF THIS SOIL IS DEPENDENT ON THE AVERAGE RATE OF COMPRESSION, AND THAT THE SOIL STRUCTURE HAS A SUBSTANTIAL TIME-DEPENDENT RESISTANCE TO COMPRESSION, WHICH MAY HAVE A SIGNIFICANT INFLUENCE ON COMPUTED PERMEABILITY COEFFICIENT AND FIELD RATES OF CONSOLIDATION. /RRL/
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Supplemental Notes:
- Vol2, No2, PP90-115, 18FIG, 1TAB, 2PHOT, 14REF
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Authors:
- CRAWFORD, C B
- Publication Date: 0
Media Info
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Serial:
- CANADIAN GEOTECHNICAL JOURNAL
- Issue Number: 0
- Publisher: National Research Council of Canada
Subject/Index Terms
- TRT Terms: Alternatives analysis; Average; Compression; Consolidations; Curves (Geometry); Effective stress; Loading and unloading; Measurement; Pore pressure; Soil consolidation test; Soil structure; Specimens
- Geographic Terms: Ottawa (Canada)
- Old TRIS Terms: Compression curves; Incremental loading; Leda clay; Resistance
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00230836
- Record Type: Publication
- Source Agency: Road Research Laboratory /UK
- Files: TRIS
- Created Date: Aug 15 2004 2:40AM