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Factors Affecting Coefficient of Earth Pressure <i> K <sub>o</sub> </i>
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References
1973
Year
Rock TestingEngineeringMechanical EngineeringFactors Affecting CoefficientTriaxial ApparatusEarth ScienceSoil MechanicGeophysicsGeotechnical EngineeringAtmospheric ScienceStressstrain AnalysisLower AtmosphereClimate ChangeAtmosphere Of EarthGeographyRock PropertiesUnsaturated Soil MechanicsAtmospheric ConditionGeotechnical PropertyGeomechanicsEarth PressureRock MechanicsMechanics Of MaterialsInterpolation Method
The coefficient of earth pressure at rest can be accurately determined by conducting constant stress ratio tests in the triaxial apparatus (interpolation method). This method is stress controlled and thus the errors in strain measurements do not interfere with the test procedure and can be corrected for after the test is finished. Strains in a Ko increases with: (1) the increase in porosity, decrease in φμ, crushing; and (2) the increase in the modulus of elasticity of the particles mineral. The effects of allowing small lateral strains and the restraining direction on the value of Ko are examined.