Soil Mechanics
CEC-206
Introduction & Basic Properties of Soil: Scope of Soil Mechanics, Soil formation, Soil as a three‐phase system, Definitions of various parameters and their Interrelationships, Index properties‐water content, specific gravity, particle size distribution, sieve analysis, hydrometer method, consistency of soils, activity, sensitivity, thixotropic. Soil Classification & Clay Mineralogy: Unified and Indian standard soil classification system, Soil structure, Clay Minerals.
Soil Hydraulics: Stress conditions in soil–total, effective and neutral stresses and relationships. Permeability–Darcy's Law, Hydraulic conductivity, Equivalent hydraulic conductivity in stratified soil, Seepage through soils, Flow nets, Seepage calculation from a flow net, Flow nets in anisotropic soils, Uplift pressure, Piping, Capillarity, Seepage force, Quicksand condition, Seepage through earth dam, Phreatic line of an earth dam. Stress Distribution in Soil: Boussinesq equations, Vertical stress distribution diagrams, Vertical stress beneath loaded areas, Westergaard’s equation, Contact pressure.
Soil Compaction: Laboratory tests: Standard proctor test, modified proctor test, OMC, Factors affecting compaction, Compaction specifications and field control. Consolidation: Primary and secondary consolidation, Normal and Over Consolidated soils, Over Consolidation Ratio, Spring analogy for primary consolidation, Terzaghi's one dimensional consolidation theory and equation, Solutions of Terzaghi’s equation, Determination of coefficient of consolidation, Determination of primary consolidation settlement, Secondary consolidation.
Shear Strength of soil: Introduction, Mohr’s circle of stress, Mohr‐Coulomb failure criterion, shear parameters, Various Laboratory tests for measurement of shear strength, UU, CU and CD tests and their relevance to field problems, unconfined compression test, Pore pressure parameters, Shear characteristics of sand, liquefaction.