JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Course Objectives:

This course will provide a introduction to the design and philosophy of geotechnical site investigations and a legislation element incorporating contaminated land. Students will learn about the range of exploration and testing techniques available to geotechnical engineers. Students will also learn how investigations are planned and how the results of investigations relate to the design process.

Course Outcomes

At the end of the course, students will be able to

• Identify ground conditions and suggest method of improvement
• Design and assess the degree of improvement
• Understand the principles of soil reinforcement and confinement in engineering Constructions
• Design reinforced soil structures

UNIT - I

Introduction to Engineering Ground Modification: Need and Objective, Identification of soil types, in situ and laboratory tests to characterize problematic soils; Mechanical, Hydraulic, Physico- chemical, Electrical, Thermal methods, and their applications.

UNIT - II

Mechanical Modification – Deep Compaction Techniques- Blasting Vibrocompaction, Dynamic Tamping and Compaction piles.

UNIT - III

Hydraulic Modification – Objectives and techniques, traditional dewatering methods and their choice, Design of dewatering system, Electro-osmosis, Electro-kinetic dewatering. Filtration, Drainage and Seepage control with Geosynthetics, Preloading and vertical drains,

UNIT - IV

Physical and Chemical Modification – Modification by admixtures, Shotcreting and Guniting Technology, Modification at depth by grouting, Crack Grouting and compaction grouting, Jet grouting, Thermal Modification, Ground freezing.

UNIT - V

Modification by Inclusions and Confinement - Soil reinforcement, reinforcement with strip, and grid reinforced soil. In-situ ground reinforcement, ground anchors, rock bolting and soil nailing.

TEXT BOOKS:

• 1. Hausmann, M. R. (1990) – Engineering Principles of Ground Modifications, McGraw Hill publications
• 2. M. P. Moseley and K. Krisch (2006) – Ground Improvement, II Edition, Taylor and Francis.

REFERENCES:

• 1. Koerner, R. M (1994) – Designing with Geosynthetics – Prentice Hall, New Jersey
• 2. Jones C. J. F. P. (1985) – Earth Reinforcement and soil structures – Butterworths, London.
• 3. Xianthakos, Abreimson and Bruce - Ground Control and Improvement
• 4. K. Krisch& F. Krisch (2010) - Ground Improvement by Deep Vibratory Methods, Spon Press, Taylor and Francis nd
• 5. Donald P Coduto – Foundation Design Principles and Practices, 2 edition, Pearson, Indian edition, 2012.