1220 | Page STABILIZATION OF CLAYEY SOIL WITH CEMENT KILN DUST AND ALCCOFINE 1101 Amit Talgotra 1 ,Er. Neeraj Sharma 2 1 M.Tech. Student, Department of Civil Engineering, Sri Sai College of Engineering & Technology,(India) 2 Assistant Professor, Department of Civil Engineering, Sri Sai College of Engineering & Technology,(India) ABSTRACT Earth has been used for building for thousands of years throughout the world spanning a diverse range of climates and cultures. Earth itself is a multi-component system usually consisting of stones, sand, silt, clay, water and, near the ground surface, organic humus. Structural stability of earth buildings is maintained by the structural integrity of the sand and stone framework, by the pore filling capacity of the silt and most importantly, by the binding qualities of the clay, which are in turn influenced by the moisture content of the soil. Compared with some building materials earth can be considered to have some disadvantages – it has relatively low compressive strength, tensile strength and abrasion resistance. It may also lose a lot of its rigidity in the presence of water. Nevertheless, it is very cheap, very widely available, environmentally friendly, strongly linked to local cultures and traditions and, with skillful construction, can contribute significantly to the aesthetic appeal and user comfort of buildings. In the present study attempt has been made to increase the strength of soil. I.INTRODUCTION 1.1. Cement kiln Dust CKD “is particulate matter that is collected from cement kiln exhaust gases and consists of entrained particles of clinker, unreacted and partially calcined raw materials, and fuel ash enriched with alkali sulfates, halides and other volatiles”. The chemical and physical properties of CKD can be influenced by several factors. Because plant operations differ considerably with respect to raw feed, type of operation, dust collection facility, and type of fuel used, the use of the terms typical or average CKD when comparing different plants can be misleading. The dust from each plant can vary markedly in chemical, mineralogical and physical composition.