Investigation of thermally induced processes in corundum refractory concretes with addition of fly ash
Само за регистроване кориснике
2015
Чланак у часопису (Објављена верзија)
,
Akadémiai Kiadó, Budapest, Hungary
Метаподаци
Приказ свих података о документуАпстракт
The effects that the fly ash addition has on the behavior of thermally resistant corundum concrete were discussed. Experimental program implied production of two refractory composites: "referent" concrete from 20 % of high-aluminate cement and 80 % of corundum aggregate, "recycled" concrete from 10 % of high-aluminate cement, 20 % of lignite coal ash, and 70 % of corundum aggregate. The fly ash was mechanically activated by a vibratory disk mill. In the concrete matrix, the ash had a role of cement partial replacement and microfiller. The mechanical and thermal properties of the concretes were studied at temperatures ranging from ambient to 1,400 °C as adopted maximum. Mechanisms of thermally induced processes were observed by differential thermal analysis at 10, 20, and 30 °C min-1 heating rates. Referent and recycled concretes showed differences in calculated activation energies. The variations in refractory concretes performances were discussed with support of scanning electron micr...oscope imagining and X-ray diffraction results. The recycled ash concrete exhibited properties that met the requirements for the castables, which proves it suitable for use in severe conditions at high temperature and highlights the reusing principle and possibility of cleaner and economically sustainable production. © 2014 Akadémiai Kiadó, Budapest, Hungary.
Кључне речи:
activation energy / composites / dehydration / mechanical activation / powder processing / sinteringИзвор:
Journal of Thermal Analysis and Calorimetry, 2015, 119, 2, 1339-1352Издавач:
- Springer Netherlands
Финансирање / пројекти:
- Усмерена синтеза, структура и својства мултифункционалних материјала (RS-MESTD-Basic Research (BR or ON)-172057)
- Развој и примена мултифункционалних материјала на бази домаћих сировина модернизацијом традиционалних технологија (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45008)
DOI: 10.1007/s10973-014-4230-4
ISSN: 1388-6150
WoS: 000348192400065
Scopus: 2-s2.0-84925487208
Институција/група
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Terzić, Anja AU - Obradović, Nina AU - Andrić, Ljubiša AU - Stojanović, Jovica AU - Pavlović, Vladimir B. PY - 2015 UR - https://dais.sanu.ac.rs/123456789/3545 AB - The effects that the fly ash addition has on the behavior of thermally resistant corundum concrete were discussed. Experimental program implied production of two refractory composites: "referent" concrete from 20 % of high-aluminate cement and 80 % of corundum aggregate, "recycled" concrete from 10 % of high-aluminate cement, 20 % of lignite coal ash, and 70 % of corundum aggregate. The fly ash was mechanically activated by a vibratory disk mill. In the concrete matrix, the ash had a role of cement partial replacement and microfiller. The mechanical and thermal properties of the concretes were studied at temperatures ranging from ambient to 1,400 °C as adopted maximum. Mechanisms of thermally induced processes were observed by differential thermal analysis at 10, 20, and 30 °C min-1 heating rates. Referent and recycled concretes showed differences in calculated activation energies. The variations in refractory concretes performances were discussed with support of scanning electron microscope imagining and X-ray diffraction results. The recycled ash concrete exhibited properties that met the requirements for the castables, which proves it suitable for use in severe conditions at high temperature and highlights the reusing principle and possibility of cleaner and economically sustainable production. © 2014 Akadémiai Kiadó, Budapest, Hungary. PB - Springer Netherlands T2 - Journal of Thermal Analysis and Calorimetry T1 - Investigation of thermally induced processes in corundum refractory concretes with addition of fly ash SP - 1339 EP - 1352 VL - 119 IS - 2 DO - 10.1007/s10973-014-4230-4 UR - https://hdl.handle.net/21.15107/rcub_dais_3545 ER -
@article{ author = "Terzić, Anja and Obradović, Nina and Andrić, Ljubiša and Stojanović, Jovica and Pavlović, Vladimir B.", year = "2015", abstract = "The effects that the fly ash addition has on the behavior of thermally resistant corundum concrete were discussed. Experimental program implied production of two refractory composites: "referent" concrete from 20 % of high-aluminate cement and 80 % of corundum aggregate, "recycled" concrete from 10 % of high-aluminate cement, 20 % of lignite coal ash, and 70 % of corundum aggregate. The fly ash was mechanically activated by a vibratory disk mill. In the concrete matrix, the ash had a role of cement partial replacement and microfiller. The mechanical and thermal properties of the concretes were studied at temperatures ranging from ambient to 1,400 °C as adopted maximum. Mechanisms of thermally induced processes were observed by differential thermal analysis at 10, 20, and 30 °C min-1 heating rates. Referent and recycled concretes showed differences in calculated activation energies. The variations in refractory concretes performances were discussed with support of scanning electron microscope imagining and X-ray diffraction results. The recycled ash concrete exhibited properties that met the requirements for the castables, which proves it suitable for use in severe conditions at high temperature and highlights the reusing principle and possibility of cleaner and economically sustainable production. © 2014 Akadémiai Kiadó, Budapest, Hungary.", publisher = "Springer Netherlands", journal = "Journal of Thermal Analysis and Calorimetry", title = "Investigation of thermally induced processes in corundum refractory concretes with addition of fly ash", pages = "1339-1352", volume = "119", number = "2", doi = "10.1007/s10973-014-4230-4", url = "https://hdl.handle.net/21.15107/rcub_dais_3545" }
Terzić, A., Obradović, N., Andrić, L., Stojanović, J.,& Pavlović, V. B.. (2015). Investigation of thermally induced processes in corundum refractory concretes with addition of fly ash. in Journal of Thermal Analysis and Calorimetry Springer Netherlands., 119(2), 1339-1352. https://doi.org/10.1007/s10973-014-4230-4 https://hdl.handle.net/21.15107/rcub_dais_3545
Terzić A, Obradović N, Andrić L, Stojanović J, Pavlović VB. Investigation of thermally induced processes in corundum refractory concretes with addition of fly ash. in Journal of Thermal Analysis and Calorimetry. 2015;119(2):1339-1352. doi:10.1007/s10973-014-4230-4 https://hdl.handle.net/21.15107/rcub_dais_3545 .
Terzić, Anja, Obradović, Nina, Andrić, Ljubiša, Stojanović, Jovica, Pavlović, Vladimir B., "Investigation of thermally induced processes in corundum refractory concretes with addition of fly ash" in Journal of Thermal Analysis and Calorimetry, 119, no. 2 (2015):1339-1352, https://doi.org/10.1007/s10973-014-4230-4 ., https://hdl.handle.net/21.15107/rcub_dais_3545 .