Effect of Kaolin-Quartz-Feldspar Mixing Ratio on Density, Water Absorption, and Strength in Porcelain Ceramics

Alvarado C.; Huaccha A.; Alfaro I.V.; Alvarado-Quintana H. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2022) · DOI: 10.18687/laccei2022.1.1.408

Resumen

The objective of this research was to find the optimum mixing ratio of kaolin-quartz-feldspar concerning the possibility of obtaining porcelain ceramics with the highest strength and density and the lowest water absorption. Statistica 12 software was used to optimize the mix design using the simplex centroid method. Ten compositions were prepared according to the mentioned design, formed by extrusion in the form of cylindrical specimens in triplicate, after sintering the specimens in a gas oven at a temperature of 1280°C, their apparent bulk density and water absorption properties were determined using an immersion method and diametral compressive strength in a 50 kNload press at a sp eed of 1m m/m in. Contour plots were constructed to determine the optimal mixing ra tio for the three investigated properties. From the analysis of these graphs, it was concluded that the triaxial paste with the highest resistance and density and the lowest water absorption is that of 75% kaolin, 5% quartz, and 20% feldspar. Finally, a dilatom etric study was carried out for a mixturewith that mixing ratio fro m ro om temperature to 1300°C to monitor its linear thermal expansion with temperature.

Instituciones: Universidad Privada del Norte