Thermal Performances of Silicatic Based Materials

摘要

In this work thermal conductivity of traditional ceramic materials with different porosity is investigated in order to assess the contribution of the microstructure. The aim is to correlate microstructural and physical characteristics of ceramic tiles with their thermal conductivity. A porcelain stoneware mix has been selected as reference material. The contribution of the open and closed pores to thermal conductivity is investigated by using different percentages of two polymethylmethacrylate (PMMA) powders, as pore-forming agents, and by varying the firing cycle. The evaluation of the experimentally measured values evidences the influence of microstructure and porosity of the materials on the thermal conductivity and diffusivity.