International Scientific Journal


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.
PAPER REVISED: 2014-06-18
PAPER ACCEPTED: 2014-06-20
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THERMAL SCIENCE YEAR 2016, VOLUME 20, ISSUE Issue 2, PAGES [603 - 612]
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