WITH EFFECT FROM THE ACADEMIC YEAR 2013- 2014
CE 454
GROUND IMPROVEMENT TECHNIQUES
(Elective-II)
Instruction 4 Periods per week
Duration of University Examination 3 Hours
University Examination 75 Marks
Sessional 25 Marks
UNIT-I
Introduction: Need for ground improvement, applications, factors affecting - different mechanical, chemical, static and dynamic techniques - mechanical stabilisation - blending of aggregate - Rothfunt’s - Testing.
UNIT-II
Chemical Stabilization: Lime, cement, bitumen, factors influencing -Design approach, construction procedure, laboratory testing, additives. Suspension and solution grouts, principles, methods, equipment, applications, compaction grouting, jet grouting.
UNIT-III
Cohesionless Soils: In situ densification, vibro techniques -Mechanisms. Factors affecting, suitability number, compacting piles.Vibro replacement process.
UNIT-IV
Cohesive Soils: In situ densification, Pre-loading - Dewatering - sand drains. Sandwicks, geodrains.ropedrains, banddrains-stone columns, lime piles - thermal and vacuum methods.
UNIT-V
Geotextiles: Woven and non-woven fabrics. Types, functions and application – Geo-textiles, geo-grides test on geo-textiles. Reinforced earth principles and factors governing design.
Suggested Reading :
- 1.Hansmann, R., Engineering Principles of Ground Modification,McGraw Hill Publishing Co.,
- 2.Moseley, M.P., Ground Improvement.
- 3.Fang-Hsai - Yang, Foundation Engineering Hand Book, 2nd edition, CBS Publication, New Delhi.
- 4.Rao, G.V. and Raju, G.V.S.S., Engineering with Geosynthesis.