This paper presents the results obtained by replacing German and Ukrainian clays in a porcelain stoneware body with a clay from Sardiniaisland, Italy, added with 10 wt% of different bentonites available on Italian territory in order to lower the body costs. Two series of bodies wereprepared: a first series by substituting completely German clay and partially Ukrainian clay (5 wt%) and a second series by substituting completelythe Ukraine clay. Rheological measures were carried out on the suspensions prepared in order to verify the effect of the bentonites presence on theshear and time dependence. The fired specimens were characterized across the technological parameters (water absorption, linear shrinkage, etc.),mechanical and aesthetical properties and compared with a standard/industrial composition.

Rheological behaviour and mechanical properties of porcelainstoneware bodies containing Italian clay added with bentonites / F., Andreola a; Siligardi, Cristina; Manfredini, Tiziano; C., Carbonchi. - In: CERAMICS INTERNATIONAL. - ISSN 0272-8842. - ELETTRONICO. - 35(2009), pp. 1159-1164.

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