| Summary: | Waste materials are no more a useless substances since many of the industries turn it into a functional materials for their product. Environment have suffered enough by the existence of the waste materials that are not properly disposed. Hence the attention is on the reuse of the waste material. Oleochemical waste can be one of the waste materials that has potential for replacement material in the concrete. For this study, oleochemical waste comes in semi-solid or sludge to partially replace the cement in the concrete mixture. This sludge is dried oven to remove the moisture. In order to get fine particles size, the sludge is grinded. The mixtures are prepared using 5% and 10% replacement of sludge in concrete G25. The dimension of the cubes used for compressive strength test is 100mm x 100mm and 100mm x 100mm x 650mm of prisms are used for flexural strength test. Compressive strength and flexural strength test are conducted to determine the strength of the concrete at 7 and 28 days. Water absorption test was carried out at 28 days to get the water absorbed by sludge concrete to determine the property of absorbing water when concrete are emerged in the water. It can be conclude, at all test conducted, the percentage of sludge added may give the poor result compare to the conventional concrete mixture.
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