High strength of bricks made up of POFA and fly ash as cement replacement

Muhammad Faqih, Bin Mohd Jaafar (2017) High strength of bricks made up of POFA and fly ash as cement replacement. [Final Year Project Report] (Unpublished)

	PDF High strength of bricks made up of POFA 24pgs.pdf Download (1MB)
	PDF (Please get the password by email to repository@unimas.my , or call ext: 3914 / 3942 / 3933) High strength of bricks made up of POFA ft.pdf Restricted to Registered users only Download (2MB)

Abstract

Palm Oil Fuel Ash (POFA) is known as the by-product from palm oil industry while fly ash is a by-product of coal-fired power stations which both are substituted for Ordinary Portland Cement (OPC). The plenty amount of these waste products creates an opportunity for researchers to discover the potential of these materials as partial cement replacement. Both materials have pozzolanic properties which like Ordinary Portland cement (OPC). The properties are alumina, silica and hydrogen bond which give strength to the concrete or mortar bricks. This alternative way is not only could contribute to extra income for palm oil mill and coal mill but helps in reducing the environmental pollution. Previous studies have successfully proved that the substitution of cement with POFA and fly ash will give benefits to the construction industry especially the concrete and brick manufacturer. Thus, this research is carried out to produce ultrafine size POFA is 0.24 µm in a short period and compare with fly ash as cement replacement too. After collect POFA at mill, the raw POFA will undergo oven drying process at 100 degrees for 24 hours. Then, the POFA will sieve to remove fibre and large particle before burning process. Next, POFA will undergo burning process at 500 degrees by using kiln for 6 hours in two days. This process to eliminate the excessive carbon content that leads to decrease the mortar brick and concrete strength. The production of ultrafine sized POFA is conducted using a 25000-rpm electric grinder to grind POFA for 30 minutes. Samples of the grinded burned POFA are analyzed to check its particle size at D50 by using the Particle Size Analyzer. The accepted size of burned POFA is then implemented into the production of the mortar brick samples for the purpose of the experimental test which compressive test on 7th, 14th, 28th and 56 days.

Actions (For repository members only: login required)

View Item