Course

Unit 1

Geosynthetics: Introduction– Types, applications, Manufacturing, Testing. Retaining structures: Types, Load transfer mechanisms, IS code-based Design, Stability analysis, Testing methods. Design of reinforced soil retaining walls supporting sloped backfill, bridge abutments.

Unit 2

Slope stability analysis: Finite and infinite slopes- Modes of failures- In-situ slope stabilization- Design of reinforced slopes- Embankments on soft soils

Facing elements: Construction procedure, design of Geosynthetics wrap around faced wall, geogrid reinforced soil walls, geocell wall, gabion wall

Unit 3

Drainage facilitation by geosynthetics: Accelerated consolidation of soft clays using geosynthetics – Geosynthetic encased stone columns for load support- Filtration – Erosion control. Natural geosynthetics and their applications – Geosynthetics for construction of municipal and hazardous waste landfills.

Experiments

List of experiments:-

• Physical properties:- Density, Thickness & Specific gravity
• Tensile strength :- Trapezoidal tear strength
• Drop cone test
• Grab strength
• Direct shear
• Pullout test
• Permittivity and Transmittivity
• Interface friction between Geotextile and soil
• Water absorption capacity & swell
• Bursting strength test

Prerequisite(s): nil

Course Objective

Understand the importance of geosynthetics in Civil Infrastructure development. To be able to design reinforced geo-structures

Course Outcome

CO1: Understand different types of geosynthetics.

CO2: Design of geosynthetics for geotechnical challenges

CO3: understand usage of geosynthetics for drainage functions.

CO-PO Mapping

Evaluation Pattern

*CA – Can be Quizzes, Assignment, Projects and Reports

Koerner, R. M.(2012). Designing with Geosynthetics, 6th Edition,Vol. 1 and 2,Xlibris corp., 914 p.

Giroud, J.P.(1984).”Geotextiles and Geomembranes. Definitions, Properties and Design,” Selected Papers, Revisions and Comments, 4th ed., IFAIPublishers, 325 p.

T.W. Lambe and Whitman, “Soil Mechanics”, Wiley, 2008.

Shukla, S.K. and Yin, J.-H. (2006). Fundamentals of Geosynthetic Engineering. Taylor and Francis, London, UK.

Reference(s)

Holtz, R. D., Christopher,B. R. and Berg, R. R.(1997) Geosynthetic engineering, Bitech publishers Ltd., 452p.

Hausmann, M. R.(1990).Engineering Principles of Ground Modification, McGraw-Hill Publishing Company, New York, 632 p. Ingold, T.S.(1982). Reinforced Earth, Thomas Telford Ltd., London, 141 p.

Das, B.M., “Principles of Geotechnical Engineering”, CL Engineering, 2013