Abstract
Oxide-graphite refractories represent the new paradigm of materials for extreme environments since 1970's: materials that resist thanks to "in situ" microstructural changes. The analysis of post-mortem linings necessitates the use of small specimens because main microstructural changes occur within the matrix, exhibiting zonal distributions relatively small compared to maximum aggregate sizes. In this paper the minimized tensile strength of discs (diameter = 18 mm, width = 8 mm) tested in diametral compression is addressed for commercial materials representative of the typical microstructures. Effects of aggregate and graphite sizes, graphite anisotropy and size of the specimens on the quasi-brittle fracture of these heterogeneous materials are discussed.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call