Research Article
Mar 1980
Dynamic Shear Modulus of Treated Expansive Soils
Authors: Wing-Cheong Au and Yong S. Chae, M.ASCEAuthor Affiliations
Publication: Journal of the Geotechnical Engineering Division
Volume 106, Issue 3
Abstract
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 physiochemical 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 catalytic 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.
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Published In
Journal of the Geotechnical Engineering Division
Volume 106 • Issue 3 • March 1980
Pages: 255 - 273
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Mar 1980
Published online: Feb 11, 2021
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Affiliations
Wing-Cheong Au
Sr. Engr., W.D. Elton and Assoc., Philadelphia, Pa
Yong S. Chae, M.ASCE
Prof., Dept. of Civ. and Environmental Engrg., Piscataway, N.J.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.