| Evaluation of Some Tile Clays from Kerala ·
Physicochemical Analysis |
P. K. PILLAI, D. THOMAS AND M. PATEL*
Pages : 53-58
DOI : 10.1080/0371750X.1981.10822520 |
| Abstract |
| Nine clay samples from five districts of Kerala have been studied to
assess their suitability for roofing tiles and allied products from their
physico-chemical behaviours. It has been confirmed from chemical
analysis that these clays are essentially kaolinite (27-65 %) with feldspar
and quartz as main impurities. From the study of physical properties
like particle size, plasticity, solubility etc and chemical analysis
on raw samples and of water of absorption, shrinkage, modulus
of rupture etc on fired bodies (800°-l000°C), it has been established
that all the first seven clays are suitable for making roofing tiles,
although the qualities will be variable and the last two are unsuitable.
While 800°C may be sufficient for Bharat and Commonwealth plastic
clays for production of tiles, it may require more than 1000°C in other
five clays. The interdependence of various properties is fairly respected.
Some uses other than that in tile industries have been
suggested. |
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