Transactions of the INDIAN CERAMIC SOCIETY Vol. 19 1960
STATISTICAL STUDIES ON PROPERTIES OF CERAMIC
WALL TILES, PART I-CRAZING RESISTANCE
S. KUMAR AND S. B. RoY*
Pages : 44-50
DOI :10.1080/0371750X.1960.10855389
Abstract
Samples of ceramic wall tiles were collected
from two plants, one of which employs continuous
tunnel kiln and the other intermittent down draft
kiln for firing the tilel. Appropriate sampling
schemes were followed to ensure that important
sources of variation were taken into account.
A procedure is described for evaluating crazing
resistance and from the results of crazing resis·
tance measurements the following conclusions
were drawn:
( r) The property is highly susceptible to such
changes in firing temperature as are likely
to occur in the furnace due to uneven dis·
tribution of heat.
(2) The samples from one of the plants show
a sharp rise in crazing resistance above a
critical firing temperature. The samples
from the second plant having a different
body composition show continuous increase
in crazing resistance with increasing firing
temperature.
(3) Size of the tiles seriJes as a useful guide in
predicting crazing resistance. The samples
can be arbitrarily classified into low resistant
and high resistant types from measurement
of their size.
Introduction
