Use of Silica Fume in Stabilizing Cement-Dune Sand for Highway Materials
American Journal of Civil Engineering
Volume 5, Issue 1, January 2017, Pages: 41-49
Received: Nov. 26, 2016; Accepted: Dec. 8, 2016; Published: Jan. 18, 2017
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Authors
M. Anisur Rahman, Department of Civil Engineering, Stamford University Bangladesh, Dhaka, Bangladesh
Ali Ahmed, Department of Civil Engineering, Stamford University Bangladesh, Dhaka, Bangladesh
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Abstract
This study presents the potential of silica fume (SF) in the stabilization of cement and dune sand for road bases and sub-bases. Ordinary Portland Cement (OPC) was used as a stabilizer and SF as an additive. Employed percentages of cement were 0, 6, 9 and 12, and silica fume/cement (SF/C) ratios were 0, 0.2, 0.4 and 0.6. Various geotechnical properties such as grain size distribution, maximum dry density (MDD), optimum moisture content (OMC), unconfined compressive strength (UCS), California bearing ratio (CBR), swell and wet-dry durability were studied. Test results showed that all these geotechnical properties were improved with the addition of both cement and SF. From the point of view of efficiency and economy, SF/C ratio of 0.20 would be called as “optimum ratio”. On the basis of UCS, CBR value, swell, soil-cement loss and mix proportion, this investigation recommends mix proportions (% SF + % cement + % sand) of 1.8 + 9.0 + 100 and 0 + 12 + 100 for base materials and 1.2 + 6 + 100 for sub-base materials.
Keywords
Silica Fume, Dune Sand, Stabilizer, Strength Criteria, Durability, Base and Sub-Base Materials
To cite this article
M. Anisur Rahman, Ali Ahmed, Use of Silica Fume in Stabilizing Cement-Dune Sand for Highway Materials, American Journal of Civil Engineering. Vol. 5, No. 1, 2017, pp. 41-49. doi: 10.11648/j.ajce.20170501.16
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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