The Potential Use of Palm Oil Fuel Ash (POFA) As Properties of Lightweight Concrete
Publication Date : 20/06/2019
Malaysia is well known as the main crude palm oil producer and exporter in the world. Million tonnes of agro wastes such as Palm Oil Fuel Ash (POFA) is being produced every year with no commercial return on it. Due to pozzolanic behaviour possessed by POFA, it could be significance if the POFA is being recycled and used in production of lightweight concrete. Thus, this study investigated the effects of Palm Oil Fuel Ash (POFA) on engineering properties in terms of compressive strength, flexural strength and splitting tensile strength. Three types of concrete were prepared, lightweight concrete with 100 % sand as control mix (CM), lightweight concrete with 10 % POFA replacement as part of filler (POFA10), and lightweight concrete with 20 % POFA replacement as part of filler (POFA20). All the specimens were water cured prior mechanical tests. The laboratory results showed that the incorporation of POFA into lightweight concrete has increased its compressive strength about 10%, flexural strength about 28% and splitting tensile strength about 23%. This shows that Palm Oil Fuel Ash has a great potential to be applied as part of lightweight concrete materials.
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