Math Problem Statement
Analyze the diagram and answer the answers below; 3The soil water characteristics curve of a soil sample is shown in the following figure. According to consolidated drained tests on saturated specimens of this soil, the shear strength parameters are obtained: c′ = 10 kPa and φ′=35°. Calculate the unsaturated shear strengths of the soil for the following matric suctions: 40 kPa, 120 kPa and 240 kPa. Assume the net normal stress is 100 kPa
Solution
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Math Problem Analysis
Mathematical Concepts
Soil Mechanics
Mohr-Coulomb Theory
Soil-Water Characteristic Curve (SWCC)
Unsaturated Soil Mechanics
Formulas
τ = c' + (σ - ua) tan(φ') + (ua - uw) tan(φb)
Theorems
Mohr-Coulomb Failure Criterion
Suitable Grade Level
Undergraduate Civil Engineering
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