Mechanical Activation of Fly Ash by High Energy Planetary Ball Mill and the Effects on Physical and Morphology Properties

Rashidah Mohammed Hamidi; Zakaria Man; Khairun Azizi Azizli; Lukman Ismail; Mohd Fadhil Nuruddin

doi:10.4028/www.scientific.net/AMM.625.38

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 625Mechanical Activation of Fly Ash by High Energy...

Mechanical Activation of Fly Ash by High Energy Planetary Ball Mill and the Effects on Physical and Morphology Properties

Abstract:

Fly ash has a high potential to be converted into geopolymeric material due to its abundant supplies and low cost. However, large particle size of the fly ash caused low reactivity which results in low properties of the end product. The improvement on the fly ash properties by mechanical activation allows it as a new possible raw material in wider application besides solving the low reactivity issue which hindered its range of utilization. In this study, fly ash was mechanically activated by high energy planetary ball mill for 1 hour at different speed, ranging from 100 to 350 rpm and with varied ball to powder ratio (2:1, 3:1 and 4:1). The effects towards its particle size, specific surface area and morphology were determined by particle size analyzer and SEM. It was observed that, increasing of speed to 350 rpm and 4:1 ball to powder ratio (BPR) results in finest size of fly ash where at d (0.1), d (0.5) and d (0.9) the sizes were 1.861, 6.765 and 17.065μm respectively and largest surface specific area (1.46 m²/g).

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Periodical:

Applied Mechanics and Materials (Volume 625)

Pages:

38-41

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.625.38

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Online since:

September 2014

Authors:

Rashidah Mohammed Hamidi, Zakaria Man*, Khairun Azizi Azizli, Lukman Ismail, Mohd Fadhil Nuruddin

Keywords:

Fly Ash (FA), Mechanical Activation, Planetary Ball Mill, Reactivity

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