Hot Modulus of Rupture Model of Refractory Materials

Jan Macháček, Jiří Hamáček, Jan Urbánek

Department of Glass and Ceramics, Institute of Chemical Technology, Prague 16628/Czech Republic


Volume 6, Issue 4, Pages 83 - 88


A new model of the temperature dependence of the hot modulus of rupture (HMOR) has been proposed. This HMOR model presumes a viscoelastic behavior of a refractory material at the point of rupture. In the simplest case, a refractory material is considered to be a Maxwellian solid for which the viscosity parameter of a dash-pot is described by a simple Arrhenian relationship and the elastic parameter of a spring is independent of temperature. Experimental data points were interlaid by the model curve and the excellent agreement has been found in spite of the fact that only three adjustable parameters are involved in the HMOR model.


hot modulus of rupture, refractory castables, model


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