Effect of combining palm oil fuel ash (POFA) and rice husk ash (RHA) as partial cement replacement to the compressive strength of concrete

Tambichik, Muhammad Afiq and Abdul Samad, Abdul Aziz and Mohamad, Noridah and Mohd Ali, Ahmad Zurisman and Mydin, Md Azree Othuman and Mohd Bosro, Mohamad Zulhairi and Iman, Muhamad Afif (2018) Effect of combining palm oil fuel ash (POFA) and rice husk ash (RHA) as partial cement replacement to the compressive strength of concrete. International Journal of Integrated Engineering, 10 (8). pp. 61-67. ISSN 2229-838X

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Abstract

The increase in agricultural waste has been one of the main concerns today. Usually, the excessive waste is dumped in the landfill without any consideration to the environment. Previous research has found that waste containing highly reactive silica can react with calcium hydroxide in concrete resulting in a compact concrete microstructure. Hence, this paper focuses on the mechanical properties of concrete containing Palm Oil Fuel Ash (POFA) and Rice Husk Ash (RHA) as replacement of cement in concrete and also the combination of both materials as pozzolan in one concrete mix. Properties studied include its workability for fresh concrete, and compressive strength of hardened concrete. Replacement level for POFA and RHA was at 10%, 15%, 20%, 25%, and 30% by weight of Ordinary Portland Cement (OPC). Results show that the addition of 10% to 30% of POFA and RHA reduces concrete workability from 35 mm to 20 mm for POFA and 39 mm to 21mm for RHA. Replacement of POFA and RHA at 10% has the highest compressive strength compared to other replacement level. Finally, the optimum combination for POFA and RHA to achieve the targeted strength of 30 MPa was recorded at 10% POFA and 15% RHA.

Item Type:	Article
Uncontrolled Keywords:	Partial cement replacement; Palm Oil Fuel Ash; Rice Husk Ash; Compressive Strength
Subjects:	T Technology > T Technology (General)
Divisions:	Faculty of Civil Engineering and Built Environment > Department of Civil Engineering : Structural and Materials Engineering
Depositing User:	Miss Afiqah Faiqah Mohd Hafiz
Date Deposited:	22 Nov 2021 03:08
Last Modified:	22 Nov 2021 03:08
URI:	http://eprints.uthm.edu.my/id/eprint/3797

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