Autores: Zimmer, A.|Bergmann C.P.
Fuente: Waste management
27 (1), 59-38
The aim of this work was to evaluate the use of mineral coal fly ash as a raw material in the production of ceramic tiles. The samples of fly ash came from Capivari de Baixo, a city situated in the Brazilian Federal State of Santa Catarina. The fly ash and the raw materials were characterized regarding their physical chemical properties, and, based on these results; batches containing fly ash and typical raw materials for ceramic tiles were prepared. The fly ash content in the batches varied between 20 and 80wt%. Specimens were molded using a uniaxial hydraulic press and were fired. All batches containing ash up to 60wt% present adequate properties to be classified as several kinds of products in the ISO 13006 standard regarding its different absorption groups (pressed). The results obtained indicate that fly ash, when mixed with traditional raw materials, has the necessary requirements to be used as a raw material for production of ceramic tiles
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