The Effect of Local Brewery Waste and Bitter Cassava Flour on Compressive Strength and Shrinkage of Plaster Mortar for EcoHouse
Journal Title: International Journal of Engineering and Science Invention - Year 2017, Vol 6, Issue 4
Abstract
Cement is a major construction material worldwide. However, given the escalating costs of cement and the environmental hazards associated with the use of cement there is need to develop alternative, costeffective, non-conventional, locally available materials, especially those that can partially or wholly replace cement. This paper presents the results on the study of the effect of local brewery waste and bitter cassava flour on the compressive strength and shrinkage of plaster. The test was made with cement replaced by local brewery waste or bitter cassava (10-50%) and cement/sand mix as a control. The results showed an optimum of 20% cement replacement with bitter cassava for plaster mortar for high cost houses (18.1Mpa) and 10% cement replacement with local brewery waste for plaster mortar for low cost houses (2.1Mpa). Result show a maximum shrinkage of 8mm at 50% replacement with bitter cassava and zero shrinkage for 50% replacement with local brewery waste. Furthermore only the control, 40% and 50% with bitter cassava flour showed cracks of about 2mm for mix ratio 1:3 and 1:4.
Authors and Affiliations
Okello Thomas, Prof. Oyawa Walter, Dr. Ajwang Patrick
Keywords
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