Assessing the Use of Waste Motor Oil in Sandcrete Blocks
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Date
2025-04-28
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Uganda Christian University
Abstract
In Kawempe Division, the sandcrete blocks made by local manufacturers have a high-water absorption capacity which makes them more susceptible to dampness. This research therefore explored the incorporation of waste motor oil in the Sandcrete blocks to prevent dampness. The sample waste motor oil or used engine oil was collected and preparation of the representative waste motor oil from Shell Auto workshop wandegeya and was taken to the molecule technology Africa limited for analysis of the presence of contaminants in the waste engine oil such as lead, zinc and iron due to elemental concentration, pH value was done using a pH meter, the density was determined using the hydrometer, total acid number and kinetic viscosity. The water absorption capacity, compressive strength and capillary of the sandcrete blocks with waste motor oil proved to be lower than the water absorption capacity, compressive strength and capillary of the sandcrete blocks without waste motor oil with the optimal dosage being 0.5%. This is because 0.5% of waste motor oil concentration is optimal for reducing waste motor oil while maintaining strength as it reduced the water absorption capacity by 20% from 18.7% to 15.05% and has a lower capillary rise thereby addressing the problem of dampness in Sandcrete blocks.
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Undergraduate