Abstract
Clayey ceramics are being traditionally fabricated in the municipal area of Campos dos Goytacazes, Rio de Janeiro, Brazil, by a mixture of different clays to attend the technical specifications. In several cases, the simple mixture of clays is not able to grantee the required properties for a given fired ceramic product. In the present work, distinct formulation using two types of clays, with or without the addition of ornamental stone waste, were investigated for the effect on the technical properties of ceramics fired at 950°C. The results indicated that at this firing temperature the ornamental stone waste was not able to act as a fluxing agent and only the linear shrinkage was effectively improved.
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