Geotechnical Seminar Topics For Civil Engineering

Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering is important in civil engineering, but is also used by military, mining, petroleum, or any other engineering concerned with construction on or in the ground. Geotechnical engineering usually uses principles of soil mechanics and rock mechanics to investigate subsurface conditions and materials; determine the relevant physical/mechanical and chemical properties of these materials; evaluate stability of natural slopes and man-made soil deposits; assess risks posed by site conditions; design earthworks and structure foundations; and monitor site conditions, earthwork and foundation construction

Engineering Geology and Groundwater

Weight-Volume Relationships (Phase Relationships) & Relative Density

Darcy’s Law for Flow through Porous Media

Soil Permeability & One-dimensional Flow

Special Cases of Permeability

2-D Flow and Flow Net Construction

Time-dependent Settlement and Spring Analogy


Compaction is the process by which the strength and stiffness of soil may be increased and permeability may be decreased. Fill placement work often has specifications requiring a specific degree of compaction, or alternatively, specific properties of the compacted soil. In-situ soils can be compacted either by excavation and recompaction, or by methods such as deep dynamic compaction, vibrocompaction, or compaction grouting.

Geotechnical investigation

A geotechnical investigation will include surface exploration and subsurface exploration of a site. Sometimes, geophysical methods are used to obtain data about sites. Subsurface exploration usually involves in-situ testing (two common examples of in-situ tests are the standard penetration test and cone penetration test). In addition site investigation will often include subsurface sampling and laboratory testing of the soil samples retrieved. The digging of test pits and trenching (particularly for locating faults and slide planes) may also be used to learn about soil conditions at depth. Large diameter borings are rarely used due to safety concerns and expense, but are sometimes used to allow a geologist or engineer to be lowered into the borehole for direct visual and manual examination of the soil and rock stratigraphy

The Odometer and Consolidation Testing

Determination of Preconsolidation Pressure

Terzaghi’s One-dimensional Consolidation Theory

Grouting & Rock Bolting

Groung Improvment in Granular Soil

Determining the Shear Strength of Soils

Evaluation of Cv (Coefficient of Consolidation)

Mohr-Coulomb Failure Criteria

Determining the Shear Strength of Soils


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