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Published in:
2016 | OriginalPaper | Chapter
Room Temperature Creep Behaviour of Ramming Paste Baked at Different Temperatures
Authors : Pierre-Olivier St-Arnaud, Donald Picard, Houshang Alamdari, Donald Ziegler, Mario Fafard
Published in: Light Metals 2014
Publisher: Springer International Publishing
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To simulate the thermo-mechanical behaviour of ramming paste in aluminium electrolysis cells, experimental data are required to feed 3D constitutive models. Both axial and radial strain measurements are necessary to design constitutive laws and to identify the parameters. However, radial strains are difficult to obtain at high temperature due to limitations of measuring devices. Moreover, samples need to be sufficiently large to acquire significant radial strain amplitude. Hence, the creep behaviour of ramming paste was studied at room temperature so the radial behaviour could then be extrapolated for the high temperature case using the axial strain evolution as a function of the temperature. Mechanical properties of ramming paste, baked at temperatures ranging from 250 °C to 1000 °C, were measured at room temperature. Uniaxial creep tests were performed at three different stress levels for each baking temperature.