Abstract
This work is a contribution to the amelioration of the mechanical and rheological properties of a slip of ceramic used in the ceramic fabrication process. A study of characterization of slip of ceramic modified by bentonite has been accomplished chemically, physically, mechanically and rheologically. Chemical analysis showed that the slip modified by bentonite consist essentially of silica with a ratio (SiO_2/Al_2 O_3) average equal to 3.5 and the ratio of clays (Al2O3/SiO2) is relatively stable with increasing percentage of bentonite in the slip, with an average 0.28. The mechanical and rheological tests showing that increasing the percentage of bentonite in base slip caused an increase in the mechanical resistance, the yield stress and rapid decrease in density of the slip.
Highlights
The ceramic tile industry today is an important sector whose technological innovation and market trends have drawn a complex picture of products and processes
According to Dondi et al (2014) the production of ceramic tiles is growing worldwide at a rate of 300 million m2/year and has already passed 10 billion m2 in 2012. For this reason a many additives have been added to slip of ceramic such as the electrolytes (Hayashi, 2012), polymers (Mansur, 2008), Sludge of wastewater treatment (Martínez-García, 2012) in order to improve the quality of ceramic
The degree of interaction between bentonite and slip particles depended on the bentonite concentration added to the ceramic slip
Summary
The ceramic tile industry today is an important sector whose technological innovation and market trends have drawn a complex picture of products and processes. According to Dondi et al (2014) the production of ceramic tiles is growing worldwide at a rate of 300 million m2/year and has already passed 10 billion m2 in 2012. For this reason a many additives have been added to slip of ceramic such as the electrolytes (Hayashi, 2012), polymers (Mansur, 2008), Sludge of wastewater treatment (Martínez-García, 2012) in order to improve the quality of ceramic. The objective of this study is to ameliorate the mechanical and rheological properties of slip of ceramic by bentonite clay. The bentonite is employed as a thickener in waterproofing of hydraulic structures (dams, large reservoirs, etc...)
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