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

Hamidi, Rashidah Mohamed and Man, Zakaria and Mohd Azizli, Khairun Azizi and Ismail, Lukman and Nuruddin, F (2014) Mechanical Activation of Fly Ash by High Energy Planetary Ball Mill and the Effects on Physical and Morphology Properties. [Citation Index Journal]

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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).

Item Type:Citation Index Journal
Subjects:T Technology > T Technology (General)
T Technology > TP Chemical technology
Academic Subject One:Academic Department - Chemical Engineering - Material Development
Departments / MOR / COE:Departments > Chemical Engineering
Departments > Civil Engineering
ID Code:11333
Deposited By: Prof Ir Dr Muhd Fadhil Nuruddin
Deposited On:13 Oct 2014 02:52
Last Modified:13 Oct 2014 02:52

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