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AN X‐RAY STUDY OF THE TOUGHNESS OF PAVING BRICK *
Author(s) -
Stong Guy E.
Publication year - 1933
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1933.tb16938.x
Subject(s) - brick , mullite , cristobalite , materials science , ceramic , toughness , composite material , mineralogy , geology , quartz
X‐ray diffraction photographs of paving brick were compared with those of pure materials. The most important result obtained in this work is the discovery of a line in the X‐ray diffraction pattern of paving brick which is characteristic of high‐grade shale paving brick. This line, produced by an undetermined crystal, is more intense in the tougher than in the weaker brick. The line falls at 2.03 ± 0.01 Ångström units. A further result of this investigation is the proof that cristobalite, mullite, sillimanite, alumina, and cyanite are not present in the paving brick studied. This also shows that mullite is not produced in ceramic materials at the relatively low temperature at which paving brick are fired.