ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 04  NO. 02 APRIL 2015:

Title:           Improvement of subgrade CBR value by using Bagasse ash & Eggshell powder
Authors:     B. Ahmed, A. Rahman, J. Das
Abstract:  In many situations, soils in natural state do not present adequate geotechnical properties to be used as road service layers. In order to improve their geotechnical parameters to meet the requirements of technical specifications of construction industry, soil stabilization techniques are normally emphasized. This study aims to improve subgrade CBR value by using sugarcane bagasse ash and eggshell powder at varying percentages respectively and to find out the optimum percentage of both admixtures beyond which CBR value decreases of soil. Soil is treated with sugarcane bagasse ash and eggshell powder using different percentages up to CBR value increases. Soil is treated with sugarcane bagasse ash by weight (1%, 3%, 5%, 7%, 9%, and 11%) and eggshell powder using different percentage (1%, 3%, 5%, 7%, 9%, 11% and 13%). The results of conducted shows that initially the optimum moisture content of soil is 13.8% and for addition of bagasse ash upto 11% it has become in increase upto 15.20%. For addition of eggshell powder upto 13% the initial optimum moisture content of soil has become in increase upto 15.25%. Initially the CBR value of soil is 6.47%. For addition of bagasse ash upto 9% the CBR value of soil has become in increase upto 13.85% and after then for addition of 11% bagasse ash it has become in decrease 13.28%. For addition of eggshell powder upto 11% the CBR value of soil has become in increase upto 9.52% and after then for addition of 13% eggshell powder it has become in decrease 9.38%.

Keywords:  Sugarcane bagasse ash, Eggshell Powder, Optimum Moisture Content, CBR value
Pages:         86-91

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