A Note on the Statistical Examination of Some Results of Porosity and After-Contraction Tests on Refractory Specimens

JSGT 1947 V31 T147-T152

From many test results, correlation coefficients have been calculated between the porosities and the after-contractions for a group of cast sillimanite and a group of fireclay samples. For the sillimanite there is poor correlation and for clay good correlation. This divergence is explained as arising from a difference in the shapes in the two materials of the cavities which give rise to the porosity.

S. C. Waterton