Kumar, S and Das, S K and Das, S K and Daspoddar, P K (2004) Synthesis of mullite aggregates from fly ash: effect on thermomechanical behaviour of low cement castables. British Ceramic Transactions, 103 (4). pp. 176-180. ISSN 0967-9782

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Abstract

Refractory aggregates were synthesised from beneficiated fly ash by reaction sintering with calcined alumina at 1600degreesC, and 83010 mullite yield was achieved The aggregates had low porosity, low thermal expansion and good refractoriness. To study compatibility in castable refractories, the aggregates were used in high alumina cement based low cement castables and their thermomechanical behaviour was studied. Microstructural characterisation revealed that the emergence of new bondphases such as mullite and calcium hexa-aluminate had a beneficial effect on the hot modulus of rupture and creep resistance Of castables. An attempt was made to establish a structure-property relationship.

Item Type:	Article
Uncontrolled Keywords:	fly ash; low cement castable; mullite synthesis; thermomechanical properties
Subjects:	Cements, Limes, Plasters
Divisions:	UNSPECIFIED
Depositing User:	Subhra Lahiri
Date Deposited:	30 Jan 2012 09:58
Last Modified:	08 Feb 2017 09:39
URI:	http://cgcri.csircentral.net/id/eprint/518

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