Subject Syllabus
CE-701 - Geotechnical Engineering
CIVIL · Semester 7
Course Modules
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Definition and scope of soil mechanics, Origin of soil, formation of soil, clay minerals, Soil structure3-phase soil system, Basic terminology, and their relationsIndex properties of soil - Water content, Field density, Specific gravity, Grain size distribution by sieve and hydrometer analysis, Relative densityAtterberg limits and their determination, Various indices - Flow-Index, Plasticity Index, Toughness Index, Liquidity Index, Activity RatioDifferent Systems of Soil Classification - Particle Size, Textural, Unified, HRB and IS classification; Field identification of soils
Types of soil water, Capillarity in soils, Flow of water through soils, Darcy's Law, permeability, Factors affecting permeabilityLaboratory & field tests for determination of coefficient of permeability, Permeability of layered soilsSeepage pressure, total, Neutral and effective stress, Upward and downward seepage through soilsFlow nets: characteristics, Methods of construction of flow net, Application of flow net, Quick conditionLaplace Equation for two-dimensional flow, Seepage through anisotropic soil and non-homogenous soil, Seepage through earth dam
Boussinesq's and Westergard's theories for point load, Uniformly loaded circular and rectangular areas, Pressure bulbVariation of vertical stress under point load along vertical and horizontal plane, Newmark's influence chart for irregular areasContact pressure distribution in sands and claysMechanism importance of compaction, Standard Proctor compaction test, Modified compaction testFactors affecting compaction, Effects of compaction on soil properties, Field compaction equipment and compaction quality control
Types of compressibility, Spring analogy, Immediate settlement, Primary consolidation and secondary consolidationStress history of clay, e-p and e-log p curvesNormally consolidated soil, Over consolidated soil and under consolidated soil, Pre-consolidation pressure and its determinationConsolidation test, Terzaghi's 1-D consolidation theory, Coefficient of consolidationSquare root time and Logarithm of time fitting methods, Computation of total settlement
Definition and importance of shear strength, Mohr and coulomb failure theories, Mohr's Stress CirclesMeasurement of shear strength-Different types of Shear Test namely, Direct Shear Test, Unconfined Compression Test, Tri Axial Compression Test & Vane Shear Test for strength parametersStrength tests based on drainage conditions, Measurement of pore pressure, Pore pressure parameters, Strength envelopsShear strength of sands, Critical void ratio, Liquefaction, Shear strength of clays; Factors affecting shear strength of granular soils and cohesive soilsStabilization of Soil: Mechanical, Cement, Lime, Bituminous, Chemical, Thermal, Electrical stabilization, Stabilization by groutingUse of geo-synthetic materials, Types, Functions and applications of geo-synthetics, Reinforced earth structures-components and construction