ABSTRACT
In an attempt to reduced non-renewable material usage, reduce green-house substances and at the same time be relevant to our environment, this research presents the progress of investigation going on to evaluate some properties of POEBA as partial replacement of cement in the production of structural concrete. This research work is carried out to determine the properties of Palm Oil Empty Bunch Ash (POEBA) when used as partial replacement for Ordinary Portland Cement (OPC) in concrete. The test being carried out include the test for the Chemical properties, fineness and specific gravity of the PO EBA and also tests for consistency. density, and compressive strength was carried out on concrete whose composition of cement is being proportioned and replaced with 5% interval of PO EBA by weight up to 50%. The mix design used for the concrete mix is 1 :2:4 and the Water/cement ratio used is 0.75. The concrete cubes were cured in water for 60, 75 and 90 days so as to attain its maximum attainable strength due to the process of hydration. The curing method implemented is moist curing. Based on the test results it was observed that workability of the concrete was improved due ~'.I{ to addition of PO EBA because ofits increased water demanding property. The compressive strength of the concrete is observed to decrease as the addition of PO EBA in proportions was increased but there is no significant difference between the compressive strength of the concrete with 5% replacement and the control. The concrete can as well be classified as a normal weight concrete based on the density range of the whole cube with different proportion of PO EBA which are all within the range of 2240 and 2400Kg/m 3. And from the above test results it was concluded that POEBA may be used as replacement materials of cement in concrete up to 5%.
