Table of Contents
ISRN Civil Engineering
Volume 2011 (2011), Article ID 138149, 5 pages
Research Article

Industrial Wastes in Soil Improvement

Department of Civil Engineering, S.R.K. Institute of Technology, Enikepadu, Vijayawada 521108, Andhra Pradesh, India

Received 11 June 2011; Accepted 18 July 2011

Academic Editors: M. Maslehuddin and D. Zeng

Copyright © 2011 G. V. Rama Subbarao et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Soil existing at a particular site may not be appropriate for construction of engineering structures. The present study made an attempt to enhance the geotechnical properties of a soil replaced with industrial wastes having pozzolanic value like rice husk ash (RHA) and fly ash (FA). Soil is replaced with RHA in 2%, 4%, and 6% to dry weight of soil. It is observed that soil replaced with 4% RHA is the optimum for the soil used in this study from geotechnical point of view. To know the influence of fly ash, soil is further replaced with 4% FA along with 4% RHA. It is found that results of soil replacement by both RHA and FA proved to be soil modification and not the improvement. Hence, a cost-effective accelerator like lime is used for further replacing the above soil-4%, RHA-4% FA mix. The optimum lime content is found to be 4%.