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Flow Properties of Unsaturated Soils Under Controlled Suction

by J. F. T. Juc?, Federal Univ of Pernambuco, Recife, Brazil,



Document Type: Proceeding Paper

Part of: Unsaturated Soils

Abstract:

Laboratory tests were performed for the hydraulic characterization of three compacted soils under high suction. Moisture changes were studied considering some factors affecting the time of moisture changes were studied considering some factors affecting the time of moisture equilibrium. Suction-moisture content tests were conducted in order to obtain data on soil water retention, suction-moisture capacity, and suction-moisture content-void ratio relationships. The hydraulic conductivity of these soils decreased about 4 to 5 orders of magnitude, relative to the saturated hydraulic conductivity, when the suction values increased from 0 to 400kPa.

Subject Headings: Soil suction | Soil water | Unsaturated soils | Saturated soils | Moisture | Hydraulic conductivity | Soil properties

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