Prethodno priopćenje
https://doi.org/10.17794/rgn.2020.4.2
THE INFLUENCE OF PROCESS CONDITIONS ON GROUND COAL SLAG AND BLAST FURNACE SLAG BASED GEOPOLYMER PROPERTIES
Quyen V. Trinh
; Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, Vietnam; Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam
Gábor Mucsi
; Institute of Raw Material Preparation and Environmental Processing, University of Miskolc, H-3515 Miskolc Egyetemváros, Miskolc, Hungary
Thai V. Dang
; Institute of Theoretical and Applied Research, Duy Tan University, Hanoi, 100000, Vietnam; Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, 550000, Vietnam
Ly P. Le
; Institute of Concrete Technology, Nghia Tan, Cau Giay, Hanoi, 100000, Vietnam
Van H. Bui
; Faculty of Physics, VNU Hanoi University of Science, 334 Nguyen Trai, Hanoi, 100000, Vietnam
Sándor Nagy
; Institute of Raw Material Preparation and Environmental Processing, University of Miskolc, H-3515 Miskolc Egyetemváros, Miskolc, Hungary
Sažetak
In this study, the material characterization of Vietnamese ground coal slag and ground granulated blast furnace slag (GGBFS), such as particle size distribution, chemical composition, bulk density and particle density are shown. The geopolymer specimens were prepared by mixing an 80 m/m% mass of solid materials (ground coal slag and GGBFS in a different ratio) with 20 m/m % of a 10M NaOH alkaline activator. A systematic experimental series was carried out in order to optimize the preparation process. In that series, the heat curing temperature was 60°C for 6 hours, and then selected specimens were heat treated at a high temperature (1000 °C) for 1 hour. After 7 days of ageing, the physical properties of the geopolymer (compressive strength, specimen density) were measured. Also, after 180 days of ageing, the pH values of water in the geopolymer leaching preparation were determined. The results show that the geopolymer can be used for refractory applications due to its good heat resistance properties. However, geopolymers that were heated at 1000 °C had lower compressive strength, specimen density and pH values of water containing the geopolymer than those that were cured at 60 °C.
Ključne riječi
coal slag; blast furnace slag; compressive strength; geopolymer
Hrčak ID:
246070
URI
Datum izdavanja:
9.11.2020.
Posjeta: 1.121 *