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Advances in Civil Engineering
Volume 2017 (2017), Article ID 9230279, 11 pages
Research Article

Experimental Study on the Utilization of Fine Steel Slag on Stabilizing High Plastic Subgrade Soil

Civil Engineering Department, College of Engineering, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan

Correspondence should be addressed to Hussien Aldeeky

Received 22 May 2016; Accepted 13 November 2016; Published 17 January 2017

Academic Editor: Claudio Tamagnini

Copyright © 2017 Hussien Aldeeky and Omar Al Hattamleh. 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.


The three major steel manufacturing factories in Jordan dump their byproduct, steel slag, randomly in open areas, which causes many environmental hazardous problems. This study intended to explore the effectiveness of using fine steel slag aggregate (FSSA) in improving the geotechnical properties of high plastic subgrade soil. First soil and fine steel slag mechanical and engineering properties were evaluating. Then 0%, 5%, 10%, 15%, 20%, and 25% dry weight of soil of fine steel slag (FSSA) were added and mixed into the prepared soil samples. The effectiveness of the FSSA was judged by the improvement in consistency limits, compaction, free swell, unconfined compression strength, and California bearing ratio (CBR). From the test results, it is observed that 20% FSSA additives will reduce plasticity index and free swell by 26.3% and 58.3%, respectively. Furthermore, 20% FSSA additives will increase the unconfined compressive strength, maximum dry density, and CBR value by 100%, 6.9%, and 154%. By conclusion FSSA had a positive effect on the geotechnical properties of the soil and it can be used as admixture in proving geotechnical characteristics of subgrade soil, not only solving the waste disposal problem.