Abstract
PERFORMANCE OF COW DUNG POWDER ON COMPRESSIVE STRENGTH OF BLENDED CONCRETE
Ayeni I. S.*, Adekanmi J. S. and Abodunrin David Olumuyiwa
ABSTRACT
This research work aims at using cow dung powder (CDP) 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. The mixing ratio was 1:2:4. The result of chemical analysis conducted on cow dung powder shows that it is pozzolanic. The Workability result gives 20mm, 15mm, 15mm, 13mm, 11mm, 9mm, and 8mm for CDP with 0%, 5%, 10%, 15%, 20%, 25% and 30% replacements. Concrete cubes of size 150 x 150 x 150mm 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 CDP varied from 15.12-32.44, 12.02-26.64, 8.72-22.48, 6.12-20.26, 5.09-18.03, 4.81-15.03, and 4.67-14.36 (N/mm2) respectively. The 20% replacement meets strength requirement (17N/mm2) for light weight concrete.
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