Pozzolanicity and Effectiveutilization of Agro-Waste Materials forConventional Concrete Production.
Journal Title: IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) - Year 2018, Vol 15, Issue 4
Abstract
The need to reduce the high cost of Ordinary Portland Cement in order to provide accommodation for the populace has intensified research into the use of some locally available materials that could be used as partial replacement for Ordinary Portland Cement (OPC). A pozzolan is a siliceous and aluminous material which in itself possesses little or no cement value but which will in finely divided form and in the presence of water react chemically with calcium hydroxide at ordinary temperature to from compounds possessing cement properties. In this research three different pozzolans were used separately as partial replacement of cement in concrete, these are Rice Husk Ash (RHA), Cassava Peel Ash (CPA) and Periwinkle Shell Ash (PSA). Chemical composition, consistency, setting time, slump test and compressive test were carried out on fresh concrete and hardened concrete containing the ashes (RHA, CPA and PSA) respectively as partial replacement for cement. Concrete mixes of 1:2:4 were prepared containing the ashes at replacement level of 0%, 5%, 10% and 20%, and test was carried out on the 7th and 28th day curing ages. The results showed that at 7 days, the maximum compressive strength was obtained at 5% replacement for RHA (14.52N/mm2 ) and for 28 days curing age the result showed that 20% replacement level at (19.77N/mm2.) is workable for lightweight concrete It was concluded that RHA, CPA and PSA yielded favourable compressive test results however RHA takes the lead in terms of availability.
Authors and Affiliations
oladapo Silas Akinkunmiand, lofintuyi Ilesanmi Olanrewaju
Keywords
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- EP ID EP438466
- DOI 10.9790/1684-1504045461.
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