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THE PHYSICAL PROPERTIES OF THE FINENESS FRACTIONS OF SLAKED SEMIFLINT CLAY 1
Author(s) -
Holmes M. E.,
Paul A. J.
Publication year - 1930
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.1151-2916.1930.tb16300.x
Subject(s) - fineness , fraction (chemistry) , mineralogy , grain size , materials science , clay minerals , geology , composite material , chemistry , chromatography
A select sample of Missouri semiflint clay was slaked to its natural size of grain and screened into the following sizes: on 20, 20 to 40, 40 to 60, 60 to 100, and through 100‐mesh. The 100‐mesh fraction is a very dense firing clay, giving a high dry and fired modulus of rupture, and would be effective as a “dope” for a weak clay. The properties of the intermediate finenesses are substantially an average of the properties of all the finenesses. Points of inferiority in the coarse fractions are supplemented by points of superiority in the fine fractions, and vice versa. All fractions are therefore desirable, and further, there are indications that no substantial improvement could be made by screening out any one of the fractions.