TY - JOUR
TI - Influence of fly ash added to a ceramic body on its thermophysical properties
AU - Kováč Jozef
AU - Trník Anton
AU - Medveď Igor
AU - Štubňa Igor
AU - Vozár Libor
JN - Thermal Science
PY - 2016
VL - 20
IS - 2
SP - 603
EP - 612
PT - Article
AB - We study thermal expansion, mass changes, heat capacity, and thermal  diffusivity and conductivity for a ceramic body with 20 mass% and without fly  ash content, using the TDA, TG, DTA, DSC, and flash method. The measurements  were performed (a) for green samples either isothermally or by a linear  heating up to a temperature 600°C, 1050°C, or 1100°C, depending on the  measurement method; (b) at the room temperature for samples preheated at  100°C, 200°C, ..., 1100°C. In case (a) addition of fly ash changes the final  contraction only above ~900°C, while the thermal properties remain almost  unchanged. In case (b) the final contraction of samples at 1100°C is the  same. The thermal diffusivity is nearly identical up to 700°C, and fly ash  causes the diffusivity to stay almost constant up to 1000°C.