Soaked Strength of Laboratory Compacted Clay

by James C. Scott, (A.M.ASCE), Geotechnical Engr.; Woodward-Clyde Consultants, Denver, Colo.,
Charles William Lovell, (F.ASCE), Prof. of Civ. Engrg.; Purdue Univ., West Lafayette, Ind.,
Adolph G. Altschaeffl, (F.ASCE), Prof. of Civ. Engrg.; Purdue Univ., West Lafayette, Ind.,

Serial Information: Journal of the Geotechnical Engineering Division, 1979, Vol. 105, Issue 11, Pg. 1273-1284

Document Type: Journal Paper


A glacial silty clay was studied to determine what variables control the laboratory compacted soaked strength and its variability. It was found that the soaked strength for specimens compacted dry of optimum was a function of energy, the interaction of water content and energy, and the interaction of dry density and energy. For specimens compacted wet of optimum, the soaked strength was found to be controlled by molding water content only. A prediction technique was developed using the laboratory soaked strength data that should ultimately be applicable for field data. If a designer selects a soaked strength desired for the compacted soil, and the variability he will accept, the technique will tell him the density, water content, or energy to specify for compaction of that soil using a specific type of compaction.

Subject Headings: Soil strength | Compacted soils | Hydro power | Water content | Soil water | Clays | Density currents | Silt

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