In Situ Tests with Ko Stepped Bladeby Alan J. Lutenegger, Clarkson Univ, Potsdam, NY, USA,
David A. Timian, Clarkson Univ, Potsdam, NY, USA,
Abstract: The results of field tests conducted using the K//o Stepped Blade to determine lateral stresses and other geotechnical properties are presented. The sites tested represent a wide range of cohesive soils including sensitive marine clay, alluvial clay, eolian silt, and overconsolidated gumbotil. Results indicate that K//o values obtained in soft to medium consistency clays compare reasonably well with other insitu and laboratory estimates of K//o, however in overconsolidated soils, the K//o Stepped Blade results appear unreasonably high. The role of pore pressures generated during testing needs to be addressed if the Stepped Blade is to become a practical tool for geotechnical investigations.
Subject Headings: Field tests | Lateral stress | Soil stress | Marine clays | Soil pressure
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