DYNAMIC SHEAR MODULUS OF TREATED EXPANSIVE SOILS

Dynamic shear modulus of expansive soils treated with lime, salt, and lime-salt combination has been determined by the resonant column technique to study the parametric effects of confining pressure, shear-strain amplitude, degree of saturation, treatment level, type of additives, and soil structure. The effect of each of these parameters on the dynamic shear modulus was found to be significant and could be explained in terms of the change in macrostructure and corresponding change in physichemical properties of the soil. It was found that the use of additives to stabilize expansive soils not only improved the static properties by reducing swelling and increasing the shear strength, but also improved the dynamic properties. The treatment with lime-salt combination was found to be the most effective as the addition of salt to bentonite clay-lime mixture produced a scatalytic acceleration of pozzolanic reactions and new cementitious minerals. It was also found that the dynamic shear modulus showed a good correlation to the static shear strength of the soil. (ASCE)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/3519342
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Au, W C
  • Chae, Y S
• Publication Date: 1980-3

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 255-273
• Serial:
  • Journal of Geotechnical and Geoenvironmental Engineering
  • Volume: 106
  • Issue Number: GT3
  • Publisher: American Society of Civil Engineers
  • ISSN: 1090-0241
  • Serial URL: http://ojps.aip.org/gto

Subject/Index Terms

• TRT Terms: Liming of soils; Percent saturation; Physicochemical properties; Pressure; Shear modulus; Shear strength; Sodium chloride; Sodium chloride; Soils; Solidification; Strain (Mechanics); Swelling soils
• Old TRIS Terms: Soil solidification; Strains
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00314630
• Record Type: Publication
• Report/Paper Numbers: ASCE 15287
• Files: TRIS
• Created Date: Oct 8 1980 12:00AM