Dehydration investigations of a refractory concrete using DTA method
Abstract
The base mix refractory concrete is corundum-based, containing corundum as refractory aggregate and CAC as hydraulic binder, with a spinel as an additive. The authors investigated the dehydration reactions which occur from the moment when water is added (at the beginning of components mixing), to the moment when installed refractory concrete lining is put into the service. Sintering process kinetic of low-cement content refractory concrete was investigated by means of differential thermal analysis at four different heating rates (5, 10, 20, and 30 A degrees C/min). Thus, temperature was increased from 20 to 1100 A degrees C. It was noticed that first dehydration step occurs at lower temperatures, indicating at a desorption of physically adsorbed and interlayer water molecules. Second dehydration step, at higher temperatures is due to dehydroxylation of the lattices and decomposition of the interlayer anions.
Keywords:
Sintering kinetics / Refractory concrete / DTASource:
Journal of Thermal Analysis and Calorimetry, 2012, 110, 1, 37-41Publisher:
- Springer, Dordrecht
Funding / projects:
- Serbian Academy of Sciences and Arts
- Directed synthesis, structure and properties of multifunctional materials (RS-172057)
- Development and application of multifunctional materials using domestic raw materials in upgraded processing lines (RS-45008)
DOI: 10.1007/s10973-011-1880-3
ISSN: 1388-6150
WoS: 000309709900005
Scopus: 2-s2.0-84867520176
Collections
Institution/Community
Institut za ispitivanje materijalaTY - JOUR AU - Obradović, Nina AU - Terzić, Anja AU - Pavlović, Ljubica AU - Filipović, S. AU - Pavlović, Vladimir PY - 2012 UR - http://rims.institutims.rs/handle/123456789/158 AB - The base mix refractory concrete is corundum-based, containing corundum as refractory aggregate and CAC as hydraulic binder, with a spinel as an additive. The authors investigated the dehydration reactions which occur from the moment when water is added (at the beginning of components mixing), to the moment when installed refractory concrete lining is put into the service. Sintering process kinetic of low-cement content refractory concrete was investigated by means of differential thermal analysis at four different heating rates (5, 10, 20, and 30 A degrees C/min). Thus, temperature was increased from 20 to 1100 A degrees C. It was noticed that first dehydration step occurs at lower temperatures, indicating at a desorption of physically adsorbed and interlayer water molecules. Second dehydration step, at higher temperatures is due to dehydroxylation of the lattices and decomposition of the interlayer anions. PB - Springer, Dordrecht T2 - Journal of Thermal Analysis and Calorimetry T1 - Dehydration investigations of a refractory concrete using DTA method EP - 41 IS - 1 SP - 37 VL - 110 DO - 10.1007/s10973-011-1880-3 ER -
@article{ author = "Obradović, Nina and Terzić, Anja and Pavlović, Ljubica and Filipović, S. and Pavlović, Vladimir", year = "2012", abstract = "The base mix refractory concrete is corundum-based, containing corundum as refractory aggregate and CAC as hydraulic binder, with a spinel as an additive. The authors investigated the dehydration reactions which occur from the moment when water is added (at the beginning of components mixing), to the moment when installed refractory concrete lining is put into the service. Sintering process kinetic of low-cement content refractory concrete was investigated by means of differential thermal analysis at four different heating rates (5, 10, 20, and 30 A degrees C/min). Thus, temperature was increased from 20 to 1100 A degrees C. It was noticed that first dehydration step occurs at lower temperatures, indicating at a desorption of physically adsorbed and interlayer water molecules. Second dehydration step, at higher temperatures is due to dehydroxylation of the lattices and decomposition of the interlayer anions.", publisher = "Springer, Dordrecht", journal = "Journal of Thermal Analysis and Calorimetry", title = "Dehydration investigations of a refractory concrete using DTA method", pages = "41-37", number = "1", volume = "110", doi = "10.1007/s10973-011-1880-3" }
Obradović, N., Terzić, A., Pavlović, L., Filipović, S.,& Pavlović, V.. (2012). Dehydration investigations of a refractory concrete using DTA method. in Journal of Thermal Analysis and Calorimetry Springer, Dordrecht., 110(1), 37-41. https://doi.org/10.1007/s10973-011-1880-3
Obradović N, Terzić A, Pavlović L, Filipović S, Pavlović V. Dehydration investigations of a refractory concrete using DTA method. in Journal of Thermal Analysis and Calorimetry. 2012;110(1):37-41. doi:10.1007/s10973-011-1880-3 .
Obradović, Nina, Terzić, Anja, Pavlović, Ljubica, Filipović, S., Pavlović, Vladimir, "Dehydration investigations of a refractory concrete using DTA method" in Journal of Thermal Analysis and Calorimetry, 110, no. 1 (2012):37-41, https://doi.org/10.1007/s10973-011-1880-3 . .