Mechanical activation in blended cement processing

Kumar, Rakesh and Kumar, Sanjay and Mehrotra, S P (2011) Mechanical activation in blended cement processing. In: VI International Conference on Mechanochemistry and Mechanical Alloying (INCOME 2008), 1-4 December 2008, NML Jamshedpur, India.



The foucs this paper is on the mechanically induced reactivity of granulated blast furnace slag and fly ash. Mechanical activation of blast furnace and fly ash is mill specific, that is, it depends on milling mechanism and mill dynamics. Slag after wet milling in an attrition mill hydrates completely in sharp contrast with ball milled slag of same fineness (~ 12 µm). The hydration product of attrition milled slag shows a number of unique characteristics, for example : increased crystallinity of the phases in the hydration product with an increase in the milling time, formation of cement phases that forms under hydrothermal conditions, etc. The vibratory milled fly ash showed higher lime reactivity vis-à-vis raw and attrition milled fly ash. The origin of mechanically induced reactivity, development of improved blended cements and their prospects are presented.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Mechanical activation, Blast furnace slag, Fly Ash, Reactivity, Blended cements, Energy, Resource conservation
Divisions:Metal Extraction and Forming
ID Code:5142
Deposited On:14 May 2012 12:11
Last Modified:14 May 2012 12:11
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