This paper present the results obtained using a clayfrom Sardinia island, Italy, added with 10 wt% ofdifferent bentonites available on Italian territory inorder to obtain a decreasing of the body costs. Twoserie of bodies was prepared a first serie substitutingcompletely Germany clay and partially Ukraine clay(5wt%), a second serie substituting completely theUkraine clay into a porcelain stoneware body.Rheological measures were carried out on thesuspensions prepared in order to verify the effect of thebentonites presence on the shear and time dependence.The fired specimens were characterized across thetechnological parameters, mechanical and aestheticalproperties and compared with a standard/industrialcomposition.
Valorization of Italian clay added bentonites for porcelain stoneware bodies.Study of the rheological behaviour and mechanical properties / Andreola, Nora Maria; Siligardi, Cristina; Manfredini, Tiziano; C., Carbonchi; P., Danasino. - ELETTRONICO. - (2007), pp. 1666-1669. (Intervento presentato al convegno 10th International Conference of the european ceramic society tenutosi a Berlino nel 17-21 Giugno 2007).