Swell of Wyoming Montmorillonite and Sand Mixtures

by Mehmit A. Sherif, (M.ASCE), Prof. of Civ. Engrg.; Univ. of Washington, Seattle, Wash. 98195,
Isao Ishibashi, (M.ASCE), Assoc. Prof. of Civ. Engrg.; Univ. of Washington, Seattle, Wash. 98195,
B. W. Medhin, Grad. Student, Dept. of Civ. Engrg.; Univ. of Washington, Seattle, Wash. 98195,


Serial Information: Journal of the Geotechnical Engineering Division, 1982, Vol. 108, Issue 1, Pg. 33-45


Document Type: Journal Paper

Discussion: Post James L. (See full record)

Abstract: Eight blends of silica sand and Wyoming montmorillonite clay (volclay) at varying proportions by weight were tested at three different temperatures (24°C, 38°C, and 66°C) to investigate their swell characteristics. The study showed that the mixtures with liquid limits below 35 percent are not susceptible to expansion. An analytical equation and a general procedure are shown for estimating the percent of swell these soil mixtures exhibit as a function of time and their liquid limits. A general procedure and an illustrative example are presented to acquaint the reader with the use of laboratory swell test data to evaluate the swell behavior of in-situ field soils.

Subject Headings: Expansive soils | Mixtures | Clays | Sandy soils | Soil mixing | Sand (material) | Field tests | Laboratory tests | Soil analysis | Silica | Wyoming

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