SETTLEMENT OF AN EMBANKMENT ON LEDA CLAY

BEFORE CONSTRUCTION STANDARD CONSOLIDATION TESTS INDICATED THAT THE STRESSES IMPOSED BY A HIGH EMBANKMENT ON A DEEP AND RELATIVELY HOMOGENEOUS DEPOSIT OF LEDA CLAY WOULD EXCEED THE PRECONSOLIDATION STRESS AND RESULT IN SETTLEMENTS OF UP TO 18 INCHES. LATER, THE RESULTS OF MORE REFINED SAMPLING AND TESTING SHOWED THAT THE PRECONSOLIDATION PRESSURE HAD BEEN UNDERESTIMATED BY 1 TON/SQ. FT. AND THAT THE IMPOSED STRESSES WOULD IN FACT FALL WITHIN THE RECOMPRESSION RANGE. TIME SETTLEMENT RELATIONSHIPS, HOWEVER, WERE NOT ELASTIC: VERTICAL STRAINS CONTINUED TO INCREASE LONG AFTER THE EMBANKMENT WAS COMPLETED. FIELD MEASUREMENTS OF SETTLEMENT ARE COMPARED WITH VALUES COMPUTED USING COMPRESSION MODULI DETERMINED BOTH FROM CONSOLIDATION AND COMPRESSION TESTS IN THE LABORATORY. /CGRA/

• Supplemental Notes:
  • Vol 5, No 1, PP 16-27, 6 FIG, 3 TAB, 10 REF
• Authors:
  • Burn, K N
  • Hamilton, J J
• Publication Date: 0

Media Info

• Serial:
  • CANADIAN GEOTECHNICAL JOURNAL
  • Issue Number: 0
  • Publisher: National Research Council of Canada

Subject/Index Terms

• TRT Terms: Clay; Compression tests; Embankments; Preconsolidation pressure; Settlement (Structures); Soil consolidation test; Stresses
• Old TRIS Terms: Compressive strength tests; Preconsolidation
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00230945
• Record Type: Publication
• Source Agency: CANADIAN GOOD ROADS ASSOCIATION
• Files: TRIS
• Created Date: Aug 15 2004 2:40AM