Effect of corncob ash blended cement on the properties of lateritic interlocking blocks
by Solomon O. Oyebisi; Festus A. Olutoge; Olatokunbo M. Ofuyatan; Abiodun A. Abioye
Progress in Industrial Ecology, An International Journal (PIE), Vol. 11, No. 4, 2017

Abstract: The increase in carbon dioxide emissions due to cement manufacturing and improper disposal of corncob leads to environmental pollution and agricultural wastage respectively. This study investigates the use of corncob ash (CCA) as cement additive in producing lateritic interlocking blocks (LIB). Portland limestone cement (PLC) was replaced by CCA in varying percentages 5, 10, 15 and 20%. Effect of CCA on compressive strength and water absorption were determined and compared with the Nigerian standard requirements. The experimental findings showed that 3% PLC, 15% CCA with a compressive strength of 4.49 MPa and water absorption of 6% at 28 days curing met the recommendations of both the Nigerian Building and Road Research Institute and the Nigerian Industrial Standards. Recycling of CCA as a promising raw material supplement appears to be a viable solution not only to the environmental problem but also to the problem of adopting indigenous waste material in the production of LIB.

Online publication date: Thu, 28-Jun-2018

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