Potential Of Coconut Shell Ash As Partial Replacement Of Ordinary Portland Cement In Concrete Production

Adeala, A.J and Olaoye, J.O and Adeniji, A.A (2020) Potential Of Coconut Shell Ash As Partial Replacement Of Ordinary Portland Cement In Concrete Production. International Journal of Engineering Science Invention (IJESI), 9 (1). pp. 47-53. ISSN 2319-6726

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The cost implication of cement used in concrete construction works is accelerating and almost becoming unbearable, yet the need for sheltering and other infrastructure using this material keeps moving up. Thus the need to find alternative binding materials other than cement has become pressing issue in research and technology world. Agricultural waste material such as coconut shells were collected and pulverized in the furnace from C to C for four hours to produce coconut shell ash (CSA), after XRF analysis was carried out to determine its pozzolanic property, which was used as partial replacement of cement in concrete production. Concrete cubes were produced using graded levels of 0, 10, 15, and 20 percent replacement of CSA for Ordinary Portland Cement. The concrete mix ratio of 1:2:4 with water cement ratio of 0.5 were used and total of 60 cubes were produced and cured in water for 7, 14, 21 and 28 days. Properties such as Workability, density, compressive strength and water absorption were determined in accordance to British Standards and pozzolanic property in accordance to American Standards. The results showed that the densities of concrete cubes for 5% replacement was above 2400Kg/m3 while compressive strength were 25.17 N/mm2, 24.72 N/mm2, 23.08 N/mm2 and 20.94N/mm2 in step of 5% up to 20% at 28 days. It was observed that 10% replacement of CSA as has the lowest water absorption of 0.66%. XRF analysis showed that the CSA belongs to class F. Thus, replacement of OPC with CSA from 5% up to 15% is recommended for normal weight concrete production. (BS 8110:2, 1985)

Item Type: Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mr Adedamola Bameke
Date Deposited: 28 Jun 2020 19:49
Last Modified: 28 Jun 2020 19:49
URI: http://eprints.federalpolyilaro.edu.ng/id/eprint/746

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