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Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS)

ISSN:2141-7016

Article Title: Comparative Effects of Air and Water Curing on Concrete Containing Optimum Rice Husk Ash Replacement
by A.E. Abalaka and O. G. Okoli

Abstract:
Concrete cubes and cylinders containing optimum cement replacement with rice husk ash (RHA) at low specific surface were cured in water and ambient air. The RHA was thermally produced using a charcoal fired incinerator. The characterizations of the RHA show that it was predominantly composed of amorphous silica with minor traces of cristobalite. The relative effects of air and water curing regimes on the physical properties of the concrete specimens containing the RHA and control were determined at different ages and water/cement (w/c) ratios. The results of compressive strength tests show that at 90 days, concrete cube specimens containing RHA recorded higher compressive strength losses compared to cube specimens without RHA.
Keywords: concrete, curing, RHA, compressive strength, hydration.
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ISSN: 2141-7016

Editor in Chief.

Prof. Gui Yun Tian
Professor of Sensor Technologies
School of Electrical, Electronic and Computer Engineering
University of Newcastle
United Kingdom

 

 

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