Assessment of Some Clays from Gercus Formation (M. Eocene) for Brick Manufacture Sulaimani Area, NE Iraq

Tola A. Merza

College of Science, University of Sulaimani

This study deals with investigating some clay deposits from the upper part of Gercus Formation (Middle Eocene), north-eastern Iraq and their evaluation for brick manufactures. Grain size analyses and Atterberge limits of raw materials have been studied. Chemical analyses show that such materials are containing low percent of SiO2 and A12O3 and high percent of CaCO3. Fourty test tiles were prepared from the clay samples by semi-dry pressing (250 Kg./cm2 and about 8% moisture content) and fired at 700, 800, 900, 1000 and 1100'C. The various characteristics of &e end products prepared from properly selected samples under optimum working conditions are determined.

Keywords:- Clay, Ceramic, Atterberge limits, Semi-dry pressing.

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