Experimental Investigation of Palm Frond Ash as an Alternative to Portland Cement in Concrete

Research areas: Year: 2013
Type of Publication: Article Keywords: Waste, Ash, Pozzolan, Concrete and Compressive Strength
Authors:
  • Obam, E. H. S. O. and Ogbo
Journal: Journal of Engineering and Energy Research Volume: 3
Number: 1 Pages: 1-6
Month: June
Abstract:
Palm trees are found in abundance in Nigeria, Malaysia and in many other parts of the World. The paper examined the engineering properties of Palm Frond Ash (PFA) with a view to determining its pozzolanic potentials as a construction material. The leaves were randomly sourced in Makurdi, Benue State Nigeria where the fronds are abundant and often left as open wastes, there by constituting environmental nuisance. The leaves were burnt in air and Laboratory tests carried out to determine some of the properties and composites of the ash. A prescribed concrete mix of 1:2:4 was adopted with water cement ratio of 0.50. Benue River gravel and sand were used as Coarse and Fine aggregates. The ash was replaced in the following percentages; 5%, 10%, 15% and 20%. Lime percentage of 20% was kept constant throughout the work. The results showed that PFA has a specific gravity of 2.5, initial and final setting times of 6 and 28 hours respectively. The average 28th day compressive strength of the concrete made with PFA was found to be 3.7 N/mm2. Ashes of some leaves may undergo hydrating activities and possibly replace Portland cement and consequently reduce construction cost.