Transcription of Soil Strength - i-astm.com
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Soil Strength - i-astm.com
soil StrengthSoil strengthu Soils are essentially frictional materials the Strength depends on the applied stressu Strength is controlled by effective stresses water pressures are requiredu soil Strength depends on drainage different strengths will be measured for a given soil that(a) deforms at constant volume (undrained) and(b) deforms without developing excess pore pressures (drained)Mohr-Coulomb failure criterionThe limiting shear stress ( soil Strength ) is given by = c + n tan where c = cohesion (apparent) = friction angle n The parameters c, are in general not soil constants.
• The parameters c, φ are in general not soil constants. They depend on • the initial state of the soil (OCR or I d ) • the type of loading (drained or undrained)
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