Advanced Creep Testing of Refractories Providing New Insight into Material Behaviour
The application of rather low preload during heating up procedure and creep measurement on the cylindrical surface of specimens allows for determining the creep onset and deformation accurately. The study of an ultralow cement alumina castable demonstrated that the creep of the virgin castable below 1500 °C is overruled by sintering, which is sensitive to the preheating conditions of preload, dwell time and temperature. Caution shall be taken on the creep testing conditions for monolithics, and the consideration of service conditions is necessary. The
identification of sintering contribution to the deformation during creep testing is also essential to gain advanced understanding on the thermomechanical behaviour of industrial vessel refractory linings.