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The Aftermath of Cassava Effluent in the Behaviour of Concrete
Abstract
Concrete is formed from the mixing of cement, water and aggregate (coarse and fine) such as gravel and sand. For the hydration process to begin, water is needed to react with the cement in order to form concrete. With this, water is one of the most important elements in concrete production. The physico-chemical properties of cassava effluent and water polluted with cassava effluent were taken to KAPPA Biotechnology Laboratory, Ibadan where various elements present in the samples like Cyanide, Cadmium, Magnesium, Calcium, Copper, Iron, and Lead etc. were analyzed and compared with the WHO Standards. The tests carried out are slump, compaction factor, compressive strength and split tensile for the concrete mixed with potable water and cured in potable water (A); concrete mixed with potable and cured in cassava effluent (B); concrete mixed with cassava effluent and cured in cassava effluent (C); concrete mixed with cassava effluent and cured in potable water (D); concrete mixed with polluted water and cured in polluted water (E); and concrete mixed with polluted and cured in potable water (F) using a mixing ratio of 1:2:4. The results revealed that cassava effluent and water polluted with cassava effluent has no pronounced effect in the workability of concrete made with them when compared with concrete made with potable water but, concrete made/cured with cassava effluent and water polluted with cassava effluent were found to be having lesser strength when compared with those made with potable water in mixing and curing. Based on the reduction in the values of the Slump, Compacting factor, Compressive strength and Split tensile strength of concrete made with either cassava effluent in mixing or curing, it can be concluded that cassava effluent or water polluted with cassava effluent should be discouraged for mixing or curing of concrete as these will have adverse effects on such concrete.
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