Compressive Strength of Palm Oil Fuel Ash Concrete

ABSTRACT As Malaysia focusing into main hub for bio-technology industry in the region, it is estimated that million tones of its waste will be produced yearly and Malaysian Government acquired to allocate more dumped area for disposal. Through public concerns and research efforts, the waste materials have potential to be utilized as construction material to replace conventional Ordinary Portland cement (OPC). One of the potential recycle materials from palm oil industry is palm oil fuel ash which contains siliceous compositions and reacted as pozzolans to produce a stronger and denser concrete. This paper will discussed the compressive strength of POFA in different replacement level and also compares with control mixture and other types of pozzolans with 15% replacement of OPC, namely quarry dust and fly ash. The results shows that concrete with 15% replacement gave the highest compressive strength and only series of concrete incorporating of fly ash surpass the strength of palm oil fuel ash concrete. However, by adding palm oil fuel ash into the concrete mixture, it gave the compressive strength up to 45 MPa at 28 days of curing.