Investigation of the Potential Use of Heavy Oil Fly Ash as Stabilized Fill Material for Construction
Publication: Journal of Materials in Civil Engineering
Volume 24, Issue 6
Abstract
The present study investigates the use of heavy oil fly ash (HOFA) generated in the power plants as a stabilizer or fill material for various construction activities. To recycle the HOFA as fill material, it was mixed with Portland cement at different ratios. Laboratory batch and column experiments were performed on the HOFA and fill materials to investigate the leaching behavior and possible environmental impacts of the potentially hazardous elements such as arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), mercury (Hg), nickel (Ni), lead (Pb), copper (Cu), zinc (Zn), selenium (Se), and vanadium (V) within the HOFA. The results showed that leaching of toxic elements from the HOFA can pose toxicity to the environment, Whereas stabilized material prepared by HOFA mixed with 40% cement proved environmentally safe for construction uses.
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Acknowledgments
Financial support provided by the Natural Sciences and Engineering Research Council (NSERC) of Canada is highly appreciated.
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Information
Published In
Journal of Materials in Civil Engineering
Volume 24 • Issue 6 • June 2012
Pages: 684 - 690
Copyright
© 2012. American Society of Civil Engineers.
History
Received: Mar 25, 2011
Accepted: Dec 7, 2011
Published online: Dec 9, 2011
Published in print: Jun 1, 2012
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