Gas Generation from Incinerator Bottom Ash: Potential Aerating Agent for Lightweight Concrete Production
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 7
Abstract
Incinerator bottom ash (IBA) has great potential to be utilized for civil engineering applications. This paper is to investigate the characteristic of gas generation from IBA and to study the potential of IBA as an aerating agent. Results show the aeration capacity of IBA used in this study is approximately 1% that of pure aluminum powder by mass. Finer particles, higher alkali molarity, and higher reaction temperature encourage the reaction and more gas is generated per gram of IBA. Type of alkaline solution does not seem to be an important factor for gas generation from IBA. Several exemplary lightweight mortars were produced by incorporating IBA as an aerating agent. It is highly plausible IBA can be used as an aerating agent to replace pure aluminum powder in the production of aerated concrete.
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Acknowledgments
The authors would like to acknowledge financial support from the Environment Technology Research Program (ETRP), National Environment Agency, Singapore (ETRP 1301 104), from the SinBerBEST program, National Research Foundation, Singapore, and from the National Key Technology R&D Program (2011BAA04B04) of China.
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 7 • July 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Apr 22, 2014
Accepted: Nov 3, 2015
Published online: Jan 28, 2016
Discussion open until: Jun 28, 2016
Published in print: Jul 1, 2016
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