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Synthesis of mullite aggregates from fly ash: effect on thermomechanical behaviour of low cement castables

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata

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Title Synthesis of mullite aggregates from fly ash: effect on thermomechanical behaviour of low cement castables
 
Creator Kumar, S
Das, S K
Das, S K
Daspoddar, P K
 
Subject Cements, Limes, Plasters
 
Description 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.
 
Publisher Maney Publishing
 
Date 2004
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://cgcri.csircentral.net/518/1/British_Ceram_Trans_%282004%29.pdf
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
 
Relation http://cgcri.csircentral.net/518/