Publication Date : 01/02/2008

Author(s) :

M.O.A. Mtallib.

Volume/Issue :
Volume 3
Issue 1
(02 - 2008)

Abstract :

The effect of lime-rice husk ash on the Atterberg limits properties vis-à-vis the engineering properties of lateritic soil was investigated. Samples of lateritic soil, lime, and rice husk ash were used in the study. 0%, 2%, 4%, 6%, 10%, and 12% lime, and 0%, 7.5%, 10%, and 12.5% rice husk ash by weight of the soil were applied in varying combinations with the soil. Three-way combinations comprising of lime-lateritic soil, rice husk ash – lateritic soil, and lateritic soil-lime-rice husk ash combinations was adopted. The most economical lime-rice-husk ash combinations to improve the Atterberg limits properties, hence the engineering properties of the soil was determined. Results show that lime-rice husk ash improves the Atterberg limits properties, and consequently the engineering properties of lateritic soil. The most economical lime-rice husk ash combination is 6% lime and 12.5% rice husk ash. It is recommended that 6% lime and 12.5% rice husk ash could be deployed to economically improve on the engineering properties of lateritic soil.

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