Utilization of Granite Powder Waste in Ceramic Bodies for Civil Construction
The industry of ornamental stones processing from Espírito Santo State produces high amounts of powder waste from sawing and polishing of granite. This waste is a non-biodegradable material that when disposed generates pollution and environmental damage. Clay/waste mixtures were prepared with a kaolinitic clay and waste additions up to 10 wt.%. Various bodies were prepared by uniaxial pressing and sintered in air between 850°C and 1150°C. Emphasis is given on the drying and firing properties. The results revealed that the ceramic bodies containing granite powder waste are adequate for manufacture of structural ceramic. In addition, the employed methodology is environmentally correct and can contribute to the sustainable development.
Lucio Salgado and Francisco Ambrozio Filho
J.M.S. Moreira et al., "Utilization of Granite Powder Waste in Ceramic Bodies for Civil Construction", Materials Science Forum, Vols. 498-499, pp. 517-522, 2005