Abstract
The present work addresses the importance of considering the working structural conditions when evaluating the expansive behavior of alumina–magnesia castables under chemical corrosion. Slag resistance tests were conducted on spinel castables with different expansion levels, inserted in cement-bonded high alumina blocks, to limit their expansion, and compared to the results attained after performing the same experiments without any constraint. The results pointed out that in an expansion controlled condition, the penetration indexes were reduced as a result of the lower volume of pores in the castable microstructure. Moreover, this benefit was enhanced for the coarser MgO-containing materials, contradicting the trends usually observed when no structural constraint is considered.
Published Version
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