Methods of Treatment of Unstable Ground focuses on the methods of treatment that have been adopted by engineers in their attempts to make unstable ground usable. These methods are meant to stabilize ground, either temporarily as in ground-water lowering or freezing techniques, or permanently as in grouting. This book is comprised of 11 chapters. The first of which reviews some of the modern techniques in addressing problems caused by unstable ground, including those caused by water in excavations, instability of natural or excavated slopes, the settlement of structures on soft or loose soils, and subsidence due to extraction of minerals from the ground. These techniques range from ground-water lowering to the use of an impermeable barrier around the excavation to prevent inflow and at the same time maintain the surrounding water table at its normal level. Attention then turns to the use of electro-osmosis and electrochemical stabilization in ground engineering; control of groundwater by excluding it through grouting; and fundamental conditions governing the penetration of grouts. The remaining chapters explore grout selection based on engineering performance; ground conditions in mining areas; clay grouting and alluvial grouting; and ground freezing. Finally, the use of cement to stabilize soil and of vibroflotation to improve poor ground below foundations of structures is described. This book should prove useful to engineers engaged in ground engineering.

Written by an author with more than 25 years of field and academic experience, Soil Improvement and Ground Modification Methods explains ground improvement technologies for converting marginal soil into soil that will support all types of structures. Soil improvement is the alteration of any property of a soil to improve its engineering performance. Some sort of soil improvement must happen on every construction site. This combined with rapid urbanization and the industrial growth presents a huge dilemma to providing a solid structure at a competitive price. The perfect guide for new or practicing engineers, this reference covers projects involving soil stabilization and soil admixtures, including utilization of industrial waste and by-products, commercially available soil admixtures, conventional soil improvement techniques, and state-of-the-art testing methods. Conventional soil improvement techniques and state-of-the-art testing methods Methods for mitigating or removing the risk of liquefaction in the event of major vibrations Structural elements for stabilization of new or existing construction industrial waste/by-products, commercially available soil Innovative techniques for drainage, filtration, dewatering, stabilization of waste, and contaminant control and removal

Systematic treatment of difficult ground as a separate paper in undergraduate and postgraduate courses is gaining ground in Indian universities. Earlier, these topics were taught under a variety of subjects like Advanced Geotechnical Engineering, Retaining Structures, Dams, Pavement Designs, Application of Geosynthetics, Application of Soil Mechanics, and so on. However, field requirement and advances in the technology make a strong case for a focused treatment of the subject which this book provides. A full-fledged paper in ground improvement techniques concentrates on the topics of soil stabilization, compaction, preloading, vertical drains, geosynthetics, in-situ reinforcements and modelling of soil reinforcement. The book provides an overview of the basic concepts of ground modifications to difficult soils in a logical and illustrative way. It teaches how to apply alternative solutions to difficult foundation problems and evaluate their effectiveness before and after construction. The text is supported by a large number of examples, review and multiple choice questions, as well as practical problems. The book is intended to serve as a textbook for undergraduate and postgraduate students of Geotechnical, Transportation, Hydraulic and Environmental Engineering, and a reference work for practising civil engineers. Salient features 1. A well researched textbook on ground improvement techniques 2. Conforms to the syllabi of all Indian universities where the subject is taught 3. Written by an expert on the subject with a decade of teaching experience