Effect of Coconut Fiber on Strengths of Mortar Mixed with Palm Oil Fuel Ash

Abstract

This paper studied the influence of coconut fiber on strengths of mortar mixed with palm oil fuel ash. The sand/ binder ratios (S/B) of 50:50, 70:30 and 90:10, cement/palm oil fuel ash ratios (C/POFA) of 100:0, 90:10, 80:20 and 70:30, and coconut fiber contents (CF) of 0, 1, 3, 5 and 7% by binder weight were used. The 7-day compressive and flexural strengths of mortar mixed with POFA and CF were evaluated. It can be seen that S/B ratio, C/POFA ratio, and CF content affected the 7-day compressive and flexural strengths of sample Due to the increase in the hydration reaction. The optimal ingredient of sample was S/B ratio of 50/50, C/POFA ratio of 90/10, and CF content of 1%.