Maize-cob Ash As Filler in Concrete
Publication: Journal of Materials in Civil Engineering
Volume 15, Issue 2
Abstract
This technical note discusses an innovative use of maize-cob ash (MCA) as a filler in concrete. MCA in the range of 0–30% was used as a partial replacement for ordinary portland cement in a concrete of mix ratio 1:2:4:0.6 (cement:sand:coarse aggregate:water-cement ratio). Fresh concrete properties, compressive, split tensile strengths, and modulus of rupture were measured for concrete mixtures with MCA within the investigated replacement levels. The results showed that the setting times of MCA concrete increased with higher ash content, while the compressive, split tensile strengths and modulus of rupture showed a reverse trend. It was further observed that almost all of the studied specimens attained over 70% of their 28-day strength at seven-day curing.
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References
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Information
Published In
Journal of Materials in Civil Engineering
Volume 15 • Issue 2 • April 2003
Pages: 205 - 208
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Feb 3, 2000
Accepted: Mar 5, 2002
Published online: Mar 14, 2003
Published in print: Apr 2003
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