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Evolution and Formation Kinetics of Gehlenite Phase in Ordinary Sulfoaluminate Cement Clinker with Low Al2O3/SiO2 Ratio
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Qingchun YANG, Jiaming WU, Changqing HU, Teng NIU, Xiangyu HAN, Xueyan FENG, Zhengmao YE
Journal of the Chinese Ceramic Society | 2022, 50(7) : 1972 - 1977
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Journal of the Chinese Ceramic Society | 2022, 50(7): 1972-1977
• Research Articles •
Evolution and Formation Kinetics of Gehlenite Phase in Ordinary Sulfoaluminate Cement Clinker with Low Al2O3/SiO2 Ratio
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Qingchun YANG, Jiaming WU, Changqing HU, Teng NIU, Xiangyu HAN, Xueyan FENG, Zhengmao YE
Affiliations
  • College of Materials Science and Engineering, University of Jinan, Jinan 250000, China

    • YANG Qingchun (1997-), male, Doctoral candidate. E-mail:

About Author:

YANG Qingchun (1997-), male, Doctoral candidate. E-mail:

Published: 2022-07-20 doi: 10.14062/j.issn.0454-5648.20211015
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To reveal the mechanism of the inert gehlenite (C2AS) phase in sulfoaluminate cement clinker at a low Al2O3/SiO2 ratio, a series of clinkers were prepared at different calcination temperatures and holding time as well as a fixed Al2O3/SiO2 ratio of 2. The evolution of C2AS was investigated by X-ray diffraction combined with the Rietveld method and thermogravimetry-differential scanning calorimetry. The results show that C2AS is produced by the reaction of CaO, SiO2 and Al2O3 at 950-1 200 ℃. C2AS is mainly produced by the reaction of CA and CaO decomposed from C4A3$ with the residual SiO2 when the temperature exceeds 1 200 ℃. It is indicated that the kinetics of the C2AS formation above 1 200 ℃ is mainly controlled by the diffusion of Ca2+, and the activation energy of the reaction is (305±20) kJ/mol. This study provides a a guidance for the use of low-grade bauxite in the calcination of sulfoaluminate cement clinker.

sulfoaluminate cement clinker  /  low alumina to silica ratio  /  gehlenite  /  formation kinetics
杨庆春, 吴佳明, 胡常庆, 牛腾, 汉翔宇, 冯雪艳, 叶正茂. 低铝硅比条件下硫铝酸盐水泥熟料中钙铝黄长石相的演变及形成动力学. 硅酸盐学报, 2022 , 50 (7) : 1972 -1977 . DOI: 10.14062/j.issn.0454-5648.20211015
Qingchun YANG, Jiaming WU, Changqing HU, Teng NIU, Xiangyu HAN, Xueyan FENG, Zhengmao YE. Evolution and Formation Kinetics of Gehlenite Phase in Ordinary Sulfoaluminate Cement Clinker with Low Al2O3/SiO2 Ratio[J]. Journal of the Chinese Ceramic Society, 2022 , 50 (7) : 1972 -1977 . DOI: 10.14062/j.issn.0454-5648.20211015
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Year 2022 volume 50 Issue 7
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Article Info
doi: 10.14062/j.issn.0454-5648.20211015
  • Receive Date：2021-11-26
  • Online Date：2026-10-20
  • Published：2022-07-20
Article Data
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History
  • Received：2021-11-26
  • Revised：2021-12-17
Funding
Affiliations
    College of Materials Science and Engineering, University of Jinan, Jinan 250000, China

Corresponding:

WU Jiaming (1992-), female, Ph.D., Lecturer; E-mail:
YE Zhengmao (1975-), male, Ph.D., Professor.
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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