Compressive Strength and Expansion of Blended Cement Mortar Containing Palm Oil Fuel Ash

This research aims to utilize palm oil fuel ash (POFA) as a pozzolanic material for replacing portland cement. POFA was ground by ball milling until the median particle sizes were 19.91 (G1P) and 10.18μm (G2P). portland cement Type I was replaced by all POFA of 10–40% by weight of the binder. The effects of POFA fineness on the setting times, compressive strength, and expansion of mortars exposed to a 5% MgSO4 solution were investigated. It was...