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Chemical treatment is often used in ground engineering for the rapid stabilization of soft soil. Although different chemicals can be used, there are significant commonalities in their underlying principles and reactions. This book provides a holistic perspective on chemical stabilisation, covering its history, chemistry, factors affecting quality in the mixing processes, the properties and constitutive behaviour of improved soils, quality control, and design and construction.Uniquely, this book draws out the interrelationships between the various methods of chemical stabilisation of soils. A key example is the relation between the water content and strength, constitutive behaviour, and uniformity of mixing. Operating parameters may produce conflicting results. For instance, a high water content promotes flowability and thus miscibility, but can also result in binder-soil segregation due to density differences. Furthermore, higher water content tends to degrade the strength of the treated soil. Hence, it is important to find an optimum balance.This book is essential particularly for geotechnical engineers who are involved in the design and execution of chemical improvement of soil, as well as researchers.
Fook-Hou Lee is a full professor at the National University of Singapore as well as a professional engineer with extensive consultancy and advisory experience involving chemical stabilisation for deep excavations in soft soil.
1. Introduction2. Chemical Basis of Soil Stabilisation3. Mixing Quality4. Mechanical Properties and Behaviour of Stabilised Soils5. Quality Control6. Designing with Chemically Improved Soils
