Jana, Manidip and Bhattacharya, Debasis and Bahinipati, Rajesh and Das, Swapan Kumar (2014) Thermo-Mechanical Behaviour of LCC in Presence of Glassy Phase Containing Sintered Alumina Aggregate. Journal of the Australian Ceramic Society, 50 (2). pp. 1-8. ISSN 0004-881X

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Abstract

Two types of low cement castable (LCC) coded as C1 and C2 were prepared utilizing 50wt% previously synthesized sintered alumina aggregate (HA]. and HA2), 25wt% calcined kaolin aggregate, 20wt% reactive alumina and 5wt% calcium aluminate cement (CAC). Physico and thermo-mechanical properties of both the castables heated at different temperatures were compared. The results indicated that the C2 castable showed higher density and cold crushing strength due to enhanced sintering in presence of glassy phase. In contrast, C1 castable exhibited higher thermo-mechanical properties due to aggregate purity. The deterioration in hot modulus of rupture (HMOR values 5.98 MPa for Cl and 5.10 MPa for C2) and refractoriness under load (RUL values 1620 for C1 and 1515 degrees C for C2) in C2 is within the acceptable limit for many high temperature applications. The phase composition of 1500 degrees C heated castables and densely packed microstructure with clusters of corundum grains (major) and rod like mullite crystals embedded in the matrix shown beneficial effect on their physico and thermo-mechanical properties.

Item Type:	Article
Subjects:	Refractories
Divisions:	Refractory
Depositing User:	Bidhan Chaudhuri
Date Deposited:	19 Dec 2014 06:22
Last Modified:	19 Dec 2014 06:22
URI:	http://cgcri.csircentral.net/id/eprint/2673

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