A LABORATORY STUDY ON THE CONSOLIDATION CHARACTERISTICS OF MARINE CLAY TREATED WITH SILICA FUME AND ADDITIVES

B. Satyanarayana
Research Scholar, University College of Engineering JNTUK Kakinada, Andhra Pradesh, India , IN

Y. Saieswar
Research Scholar, University College of Engineering JNTUK Kakinada, Andhra Pradesh, India , IN

Dr. D. Koteswara Rao
Research Scholar, University College of Engineering JNTUK Kakinada, Andhra Pradesh, India , IN

Keywords: Marine clay, chemical stabilisation, Silica Fume, NH4Cl, KCl, FeCl3, Consolidation Characteristics.

Abstract

Marine clay is highly deformable soil in nature, available along the coastal corridor. Marine clays are highly compressible and possess moderate swelling behaviour. Marine clays are moderate in expansive nature due to the presence of chlorite, illite, kaolinite and montmorillonite. The natural water content of the marine clay is always greater than its liquid limit. The properties of marine clay differ
significantly in moist and dry conditions. Due to the poor engineering characteristics of these marine clay soil deposits causes several problems in pavement design and has potential to destroy building foundations in almost all the countries. Many of these areas covered with thick soft marine clay deposit, with very low shear strength and high compressibility. In this present study the consolidation characteristics i.e., coefficient of consolidation, compression index and rate of consolidation of untreated and treated marine clay were determined by adding Silica Fume as admixture and also with chemicals i.e. ammonium chloride, potassium chloride and ferric chloride.

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