Treatment of oil contaminated soil produced synthetically by using portland cement and rice husk ash

Abstract

The used oil waster contains a lot of heavy metal possess harmful effects towards environmental health of human if the waste untreated. The waste will easily leaching out to surrounding and our environment will be polluted. The mixture of sand and oil act as a contaminated soil. The stabilisation and solidification method toward reducing the waste from leaching out was important. The study was carried out to evaluate the compressive strength of the concrete with different amounts of waste in days 7 and days 28. There were two method curing proposed in experiment to identify the possible greater method in producing higher strength in compressive strength which were wet method and dry method. The element of all raw material and sample batch was analysed by using X-Ray Fluorescence (XRF). Based on the result, waste content of 1% and non-waste content does not show any different strength. However, the compressive strength started show change and the decreasing strength for 3% until 10% contain waste in concrete. The optimum compressive strength at 28 days is 16.4837 MPa. Next, the wet method have higher strength than dry method due to the moisture contain inside the concrete and continues hydration process occurs The usage of RHA as a binder gives a higher strength due to containing silica and its can occupied pores in concrete. This is proved that RHA gives addition strength toward concrete. Lastly, the amount of waste and RHA were effected the strength of concrete.