Civil MDC

2021 Soft Clay Engineering and Ground Improvement by Jay Ameratunga Nagaratnam Sivakugan Braja M. Das

Table of Contents

1. Introduction (J Ameratunga, N Sivakugan & B M Das)

2. Engineering Geology of Soft Clay (I Shipway)

3. Basic Soil Mechanics (N Sivakugan and J. Ameratunga)

4. Geotechnical Testing (J Ameratunga & N Sivakugan)

5. Parameter Derivation (J Ameratunga & N Sivakugan)

6. Ground Improvement Methods for Soft Clays (J Ameratunga & N Sivakugan)

7. Replacement (J Ameratunga & N Sivakugan)

8. Preloading (S Iyathurai & J Ameratunga)

9. Preloading with Wick Drains (S Iyathurai)

10. Stone Columns (K Chan & B Poon)

11. Semi-Rigid Inclusions (Thayalan Nall)

12. Lightweight Fill (J Ameratunga)

13. Deep Soil Mixing (T Muttuvel, S Iyathurai & J Ameratunga)

14. Basal High Strength Geotextiles for Ground Improvement of Soft Foundation Soils (C Lawson)

15. Mass Stabilization (A O′Sullivan)

16. Observational Approach and Geotechnical Instrumentation (K A Dissanayake & C A Bridges)

17. Geotechnical Risk Management (C A Bridges)

Preface

This book covers the design and implementation of ground improvement
techniques as applicable to soft clays in the eyes of experienced geotechnical
personnel, from academics to practitioners. Soft soils and ground improvement
have become major challenges to geotechnical engineers during the
last three decades. Planners, architects, consultants, and contractors are now
aware what soft soil is and the risks associated with development in areas
where soft soil is encountered. They know that ‘good’ land is limited and,
therefore, marginal lands need to be improved.


Ground improvement, in general, has been the theme for several international
conferences, and there are dedicated journals and reference books in
this area as well. However, very few books are available that are fully dedicated
to the improvement of soft soils. Soft soil is very different compared
to other weak geomaterials that require ground improvement. The objective
of this book has been to cover this niche area in a very comprehensive manner,
with numerical examples and case histories wherever appropriate.


As the title of the book emphasizes, soft clay engineering is intimately
related to soft clay ground improvement. There are several ground improvement
techniques available in the literature now that are applicable to soft
clay. Some are unique; however, most are slight variations from one another.
If one tries to cover all offshoots, the book will be extremely large and, more
importantly, the reader will get distracted, since so much needs to be
absorbed. Therefore, we have selected a few techniques that are most popular
around the world and concentrated on those to provide design and construction
methodologies. We have included some examples where it is
considered important to relay the message.

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