Abstract
In Malaysia, issue of environmental pollution resulting from disposal of Palm Oil Fuel Ash (POFA) which is a by-product from palm oil mill has initiated research to incorporate this waste in Oil Palm Shell (OPS) lightweight aggregate concrete production. The current study investigates the effect of palm oil fuel ash content as partial cement replacement towards compressive strength OPS lightweight aggregate concrete. Several OPS lightweight aggregate concrete mixes were produced by replacing various percentage of POFA ranging from 10, 20, 30, 40 and 50%, respectively by weight of cement. All the mixes were cast in form of cubes and then subjected to water curing until the testing date. The compressive strength test is conducted in accordance to BSEN 12390 (2009) at 7 and 28 days. From the results, it was observed that the combination of appropriate POFA content would enhance the compressive strength of OPS lightweight aggregate concrete. Specimen produced using 20% POFA as partial cement replacement exhibit higher value of compressive strength than that of control OPS lightweight aggregate concrete. However, mixes consisting POFA up to 50% is also suitable for structural application.
Highlights
Owing to the low density of lightweight aggregate concrete that is in the range of 300 to 1850 kg/m3, this material is suitable for a wide range of purposes such as block production, panels, sound barrier walls and floating structural
Two types of mixes has been used in this experimental work that is plain oil palm shell lightweight aggregate concrete and oil palm shell lightweight aggregate concrete containing Palm Oil Fuel Ash (POFA) as partial cement replacement material
The work has been conducted at laboratory of Faculty of Civil Engineering and Earth Resources, University Malaysia Pahang
Summary
Owing to the low density of lightweight aggregate concrete that is in the range of 300 to 1850 kg/m3, this material is suitable for a wide range of purposes such as block production, panels, sound barrier walls and floating structural. Uses of POFA as partial cement replacement in production of OPS lightweight aggregate concrete making yet to be explored. It is anticipated that formulation of OPS lightweight aggregate concrete integrating POFA to substitute the use of cement partially would produce a greener concrete and assist palm oil industry to be more environmental friendly.
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