JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Geo-Technical Engineering, Foundation Engineering

Course Objectives:

• To know the need of ground improvement
• To acquire the knowledge on the various ground improvement techniques available and their applications for different types of soils
• To understand suitable ground improvement technique for given soil conditions.

Course Outcomes

at the end of the course the student able to

• Know the necessity of ground improvement
• Understand the various ground improvement techniques available
• Select & design suitable ground improvement technique for existing soil conditions in the field

UNIT - I

Introduction to Engineering Ground Modification: Need and objectives, 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: Shallow Compaction Techniques- 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, Modification Grouting, Introduction to Thermal Modification including 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

REFERENCE BOOKS:

• 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, John Wiley & Sons, 1994.
• 4. K. Krisch & F. Krisch (2010) - Ground Improvement by Deep Vibratory Methods, Spon Press, Taylor and Francis
• 5. Donald P Coduto – Foundation Design Principles and Practices, 2nd edition, Pearson, Indian edition, 2012.