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Palm Oil Fuel Ash as the future supplementarycementitious material in concrete


Sustainable and durable concrete technology

 


The use of Palm Oil Fuel Ash (POFA) as a pozzolanic material for partial cement replacement in concrete reduces the cost of concrete as well as cuts down the number of landfill area required for disposing the ash. This paper presents a comprehensive review of the engineering properties and durability aspects of blended cement concrete incorporating POFA as a partial replacement of ordinary Portland cement (OPC). An Ordinary Portland Cement concrete mix termed P0 and two POFA concrete mixes with different fineness termed (POFA 45 and POFA 10) at 20% replacement level by weight of cement were considered in the study. Acid solution was found to be the most destructive under the applied exposure conditions on P0. The loss of mass and the resistance to chloride penetration were found to be depended on the degree of fineness of POFA to which the specimens were exposed. As for the values obtained from compressive strength test, P0 specimens were found to be the lowest compared with specimen consisting POFA. On the other hand, POFA 10 exhibited better resistance against acid than POFA 45. Conclusively, integration of POFA as partial cement replacement, especially very fine POFA increases the resistance of high strength POFA concrete towards both chloride attack and acid attack.

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CPi worldwide journals are trade journals for the concrete and precast concrete industry that are published in 10 different language editions in more than 170 countries. These trade journals, with their practical editorial reporting on research, production and applications, are specifically addressing the decision makers of the concrete and precast concrete industry.

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