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


Article Title: Guinea Corn Husk Ash As Partial Replacement Of Cement In Hollow Sandcrete Block Production
by Tahomah Alkamu, E.P. Datok and D.D. Jambol

The quality of sandcrete blocks is a function of the method employed in the production and the properties of the constituent materials. The production of sandcrete blocks using guinea corn husk ash (GCHA) as cement replacement was investigated. 3 number sandcrete blocks were cast for each replacement levels (0, 5, 10, 15 and 20 percentage) with GCHA. The blocks were cured and crushed at 7, 14 and 28 days. The results show that the compressive strength ranges from 2.30N/mm2 to 1.3N/mm2. The strength at the optimum level was within the recommended limit of the National Building Code. The results also showed that the strength decreased with an increase in the content of GCHA. The density also decreased with an increase in GCHA which indicates that GCHA is a light material. It was also observed that the chemical composition of the GCHA qualifies the grading for pozzolana by BS but falls short of ASTM standards. A 5% replacement was recommended as the maximum replacement percentage, although 10% exhibited good strength. The research was aimed at the use of Guinea corn husk as partial replacement of cement in sandcrete block production to curtail pollution problems created by the husk and improve the strength properties of blocks in terms of production.
Keywords: Compressive strength, Density, GCHA, Sandcrete blocks.
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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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