Evaluation of the sulfate resistance of concrete containing palm oil fuel ash

The effects of using palm oil fuel ash (POFA) as a new pozzolanic material on sulfate resistance in terms of expansion and loss in compressive strength of concretes exposed to 5% MgSO4 solution for up to 24 months were evaluated. POFA was processed to obtain different sized particles: small and medium sizes (SP and MP) were produced by grinding, and the large size (LP) used unground POFA. Portland cement type I was replaced by SP, MP, and LP at...