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Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia





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Academic Editor: Luciano Feo

Abstract Palm oil fuel ash POFA has previously been used as a partial cement replacement in concrete. However, limited research has been undertaken to utilize POFA in high volume in concrete. This paper presents a study on the treatment and utilization of POFA in high volume of up to 50% by weight of cement in self-consolidating high strength concrete SCHSC. POFA was treated via heat treatment to reduce the content of unburned carbon. Ordinary Portland cement was substituted with 0%, 10%, 20%, 30%, and 50% treated POFA in SCHSC. Tests have been conducted on the fresh properties, such as filling ability, passing ability and segregation resistance, as well as compressive strength, drying shrinkage and acid attack resistance to check the effect of high volume treated POFA on SCHSC. The results revealed that compared to the control concrete mix, the fresh properties, compressive strength, drying shrinkage, and resistance against acid attack have been significantly improved. Conclusively, treated POFA can be used in high volume as a cement replacement to produce SCHSC with an improvement in its properties. View Full-Text

Keywords: self-consolidating concrete; treated palm oil fuel ash; high volume; compressive strength; drying shrinkage; acid attack self-consolidating concrete; treated palm oil fuel ash; high volume; compressive strength; drying shrinkage; acid attack





Autor: Belal Alsubari, Payam Shafigh and Mohd Zamin Jumaat *

Fuente: http://mdpi.com/



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