Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue
In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Cao, Zhao [verfasserIn] |
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E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016transfer abstract |
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| Umfang: |
6 |
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| Übergeordnetes Werk: |
Enthalten in: Designing a reverse logistics network to manage construction and demolition wastes: A robust bi-level approach - Jahangiri, Adel ELSEVIER, 2022, Amsterdam [u.a.] |
|---|---|
| Übergeordnetes Werk: |
volume:146 ; year:2016 ; day:10 ; month:01 ; pages:23-28 ; extent:6 |
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| DOI / URN: |
10.1016/j.minpro.2015.11.008 |
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| 520 | |a In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. | ||
| 520 | |a In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. | ||
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10.1016/j.minpro.2015.11.008 doi GBVA2016010000003.pica (DE-627)ELV019331711 (ELSEVIER)S0301-7516(15)30048-X DE-627 ger DE-627 rakwb eng 550 550 DE-600 690 330 VZ 43.35 bkl 85.35 bkl Cao, Zhao verfasserin aut Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue 2016transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. Cao, Yongdan oth Dong, Hongjuan oth Zhang, Jinshan oth Sun, Chunbao oth Enthalten in Elsevier Science Jahangiri, Adel ELSEVIER Designing a reverse logistics network to manage construction and demolition wastes: A robust bi-level approach 2022 Amsterdam [u.a.] (DE-627)ELV008849315 volume:146 year:2016 day:10 month:01 pages:23-28 extent:6 https://doi.org/10.1016/j.minpro.2015.11.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 146 2016 10 0110 23-28 6 045F 550 |
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10.1016/j.minpro.2015.11.008 doi GBVA2016010000003.pica (DE-627)ELV019331711 (ELSEVIER)S0301-7516(15)30048-X DE-627 ger DE-627 rakwb eng 550 550 DE-600 690 330 VZ 43.35 bkl 85.35 bkl Cao, Zhao verfasserin aut Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue 2016transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. Cao, Yongdan oth Dong, Hongjuan oth Zhang, Jinshan oth Sun, Chunbao oth Enthalten in Elsevier Science Jahangiri, Adel ELSEVIER Designing a reverse logistics network to manage construction and demolition wastes: A robust bi-level approach 2022 Amsterdam [u.a.] (DE-627)ELV008849315 volume:146 year:2016 day:10 month:01 pages:23-28 extent:6 https://doi.org/10.1016/j.minpro.2015.11.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 146 2016 10 0110 23-28 6 045F 550 |
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10.1016/j.minpro.2015.11.008 doi GBVA2016010000003.pica (DE-627)ELV019331711 (ELSEVIER)S0301-7516(15)30048-X DE-627 ger DE-627 rakwb eng 550 550 DE-600 690 330 VZ 43.35 bkl 85.35 bkl Cao, Zhao verfasserin aut Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue 2016transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. Cao, Yongdan oth Dong, Hongjuan oth Zhang, Jinshan oth Sun, Chunbao oth Enthalten in Elsevier Science Jahangiri, Adel ELSEVIER Designing a reverse logistics network to manage construction and demolition wastes: A robust bi-level approach 2022 Amsterdam [u.a.] (DE-627)ELV008849315 volume:146 year:2016 day:10 month:01 pages:23-28 extent:6 https://doi.org/10.1016/j.minpro.2015.11.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 146 2016 10 0110 23-28 6 045F 550 |
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10.1016/j.minpro.2015.11.008 doi GBVA2016010000003.pica (DE-627)ELV019331711 (ELSEVIER)S0301-7516(15)30048-X DE-627 ger DE-627 rakwb eng 550 550 DE-600 690 330 VZ 43.35 bkl 85.35 bkl Cao, Zhao verfasserin aut Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue 2016transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. Cao, Yongdan oth Dong, Hongjuan oth Zhang, Jinshan oth Sun, Chunbao oth Enthalten in Elsevier Science Jahangiri, Adel ELSEVIER Designing a reverse logistics network to manage construction and demolition wastes: A robust bi-level approach 2022 Amsterdam [u.a.] (DE-627)ELV008849315 volume:146 year:2016 day:10 month:01 pages:23-28 extent:6 https://doi.org/10.1016/j.minpro.2015.11.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 146 2016 10 0110 23-28 6 045F 550 |
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10.1016/j.minpro.2015.11.008 doi GBVA2016010000003.pica (DE-627)ELV019331711 (ELSEVIER)S0301-7516(15)30048-X DE-627 ger DE-627 rakwb eng 550 550 DE-600 690 330 VZ 43.35 bkl 85.35 bkl Cao, Zhao verfasserin aut Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue 2016transfer abstract 6 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. Cao, Yongdan oth Dong, Hongjuan oth Zhang, Jinshan oth Sun, Chunbao oth Enthalten in Elsevier Science Jahangiri, Adel ELSEVIER Designing a reverse logistics network to manage construction and demolition wastes: A robust bi-level approach 2022 Amsterdam [u.a.] (DE-627)ELV008849315 volume:146 year:2016 day:10 month:01 pages:23-28 extent:6 https://doi.org/10.1016/j.minpro.2015.11.008 Volltext GBV_USEFLAG_U GBV_ELV SYSFLAG_U SSG-OPC-GGO 43.35 Umweltrichtlinien Umweltnormen VZ 85.35 Fertigung VZ AR 146 2016 10 0110 23-28 6 045F 550 |
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Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. 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effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue |
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Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue |
| abstract |
In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. |
| abstractGer |
In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. |
| abstract_unstemmed |
In this paper, a systematic study was conducted to investigate the influence of calcination conditions including grinding time of raw material, temperature, holding time and heating rate on the pozzolanic activity of calcined coal gangue (abbreviated as CCG hereinafter). Furthermore, the changes of mineral composition, chemical structure and morphology of coal gangue during calcination were characterized by means of thermogravimetric-differential scanning calorimeter (TG-DSC), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) analyses. The results show that heating temperature affects directly the mineralogy and crystallinity of CCG. Kaolinite in coal gangue transforms into metakaolin which is an irregular and amorphous phase as calcined at 600°C–800°C because of the dehydroxylation of Al–(O,OH) octahedrons together with the depolymerization of Si–O tetrahedrons. The amorphous metakaolin is of high pozzolanic activity; however, it will lose its activity due to the recrystallization into mullite when heating temperature is over 1000°C. The pozzolanic activity of CCG is mainly dependent on the non-crystallizing degree of kaolinite after calcination. |
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Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal gangue |
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