High-temperature concrete binders based on fly ash
Abstract
High-temperature concrete binders in which fly ash, as environmentally harmful secondary raw material, is combined with masonry and refractory cement is a new option for reapplication of this coal combustion by-product. In this study, the design of the bonding agents was based on the fly ash from lignite coal combustion process and two types of cement: Portland cement and aluminate cement. Fly ash was applied without any further mechanical or thermal treatment. Mechanical properties of the binders were investigated and subsequently correlated with changes which occurred in the phase composition and microstructure of the agents. Scanning electron microscopy was used in investigation of microstructural changes caused by temperature. X-ray diffraction method was used in monitoring of the mineral phase changes also induced by increasing temperature. The investigations conducted on the bonding agents highlighted presence of good refractory properties and temperature-resistance, and also sho...wed high values of compressive strength. The investigated bonding agents, thus, can be applied in refractory concretes, but also in various types of thermo-insulations.
Keywords:
refractory cement / Portland cement / microstructure / fly ash / compressive strengthSource:
Revista Romana de Materiale/ Romanian Journal of Materials, 2013, 43, 3, 269-275Funding / projects:
- 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)
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Institution/Community
Institut za ispitivanje materijalaTY - JOUR AU - Terzić, Anja AU - Radojević, Zagorka AU - Miličić, Ljiljana AU - Pavlović, Ljubica AU - Stojanović, Jovica PY - 2013 UR - http://rims.institutims.rs/handle/123456789/203 AB - High-temperature concrete binders in which fly ash, as environmentally harmful secondary raw material, is combined with masonry and refractory cement is a new option for reapplication of this coal combustion by-product. In this study, the design of the bonding agents was based on the fly ash from lignite coal combustion process and two types of cement: Portland cement and aluminate cement. Fly ash was applied without any further mechanical or thermal treatment. Mechanical properties of the binders were investigated and subsequently correlated with changes which occurred in the phase composition and microstructure of the agents. Scanning electron microscopy was used in investigation of microstructural changes caused by temperature. X-ray diffraction method was used in monitoring of the mineral phase changes also induced by increasing temperature. The investigations conducted on the bonding agents highlighted presence of good refractory properties and temperature-resistance, and also showed high values of compressive strength. The investigated bonding agents, thus, can be applied in refractory concretes, but also in various types of thermo-insulations. T2 - Revista Romana de Materiale/ Romanian Journal of Materials T1 - High-temperature concrete binders based on fly ash EP - 275 IS - 3 SP - 269 VL - 43 UR - https://hdl.handle.net/21.15107/rcub_rims_203 ER -
@article{ author = "Terzić, Anja and Radojević, Zagorka and Miličić, Ljiljana and Pavlović, Ljubica and Stojanović, Jovica", year = "2013", abstract = "High-temperature concrete binders in which fly ash, as environmentally harmful secondary raw material, is combined with masonry and refractory cement is a new option for reapplication of this coal combustion by-product. In this study, the design of the bonding agents was based on the fly ash from lignite coal combustion process and two types of cement: Portland cement and aluminate cement. Fly ash was applied without any further mechanical or thermal treatment. Mechanical properties of the binders were investigated and subsequently correlated with changes which occurred in the phase composition and microstructure of the agents. Scanning electron microscopy was used in investigation of microstructural changes caused by temperature. X-ray diffraction method was used in monitoring of the mineral phase changes also induced by increasing temperature. The investigations conducted on the bonding agents highlighted presence of good refractory properties and temperature-resistance, and also showed high values of compressive strength. The investigated bonding agents, thus, can be applied in refractory concretes, but also in various types of thermo-insulations.", journal = "Revista Romana de Materiale/ Romanian Journal of Materials", title = "High-temperature concrete binders based on fly ash", pages = "275-269", number = "3", volume = "43", url = "https://hdl.handle.net/21.15107/rcub_rims_203" }
Terzić, A., Radojević, Z., Miličić, L., Pavlović, L.,& Stojanović, J.. (2013). High-temperature concrete binders based on fly ash. in Revista Romana de Materiale/ Romanian Journal of Materials, 43(3), 269-275. https://hdl.handle.net/21.15107/rcub_rims_203
Terzić A, Radojević Z, Miličić L, Pavlović L, Stojanović J. High-temperature concrete binders based on fly ash. in Revista Romana de Materiale/ Romanian Journal of Materials. 2013;43(3):269-275. https://hdl.handle.net/21.15107/rcub_rims_203 .
Terzić, Anja, Radojević, Zagorka, Miličić, Ljiljana, Pavlović, Ljubica, Stojanović, Jovica, "High-temperature concrete binders based on fly ash" in Revista Romana de Materiale/ Romanian Journal of Materials, 43, no. 3 (2013):269-275, https://hdl.handle.net/21.15107/rcub_rims_203 .