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The Effects of Drying on the Mechanical Strength of Lloyd Clay¹

ABSTRACT

Increases in the mechanical strength of a Lloyd clay soil were associated with moisture losses which occurred during the aging periods. While increases of 140% resulted from conditions favoring low moisture losses over a period of 240 days, this strength was approximately one-fifth that attained by larger moisture losses during a period of 3 hours. It appears that drying is one of the more important factors contributing to strength increases which were associated with the aging of this soil.

¹ Presented before Div. I, Soil Science Society of America, Aug. 7, 1958, at Lafayette, Ind.

² Soil Scientist, National Tillage Machinery Laboratory, USDA, Auburn, Ala.

Received for publication December 13, 1958. Accepted for publication February 26, 1959.