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World Journal of Engineering
Research and Technology

An International Peer Reviewed Journal for Engineering Research and Technology

ISSN 2454-695X

Impact Factor : 5.218

ICV : 79.45

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Ayeni I. S.* and Akinlolu S. O.


This research work aims at using Cow Dung Ash (CDA) as partial replacement for cement in concrete production. The percentage replacements were varied from 0%, 5%, 10%, 15%, 20%, 25% and 30% with water cement ratio varied from 0.54, 0.57, 0.60, 0.64, 0.68, 0.72 and 0.77 respectively. The mixing ratio was 1:2:4. The result of chemical analysis conducted on cow dung ash shows that it is pozzolanic. The Workability results gives 20mm, 18mm, 17mm, 15mm, 14mm, 11mm, and 10mm for CDA with 0%, 5%, 10%, 15%, 20%, 25% and 30% replacements. Concrete cubes of size 150X150X150 were cast, cured and tested at different maturing ages of 7, 14, 28, 56 and 112 days. The compressive strength results for 0%, 5%, 10%, 15%, 20%, 25% and 30% replacement for CDA varied from 15.12-32.44, 14.86-31.95, 10.37-30.35, 9.39-26.13, 8.72-23.39, 8.24-14.72 and 7.20-12.79(N/mm2) for CDA respectively. The 20% replacement meets the strength requirement (17N/mm2) for light weight concrete.

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