Barium calcium sulfoaluminate (C2·75B1·25A3S¯) mineral was prepared with analytical pure chemical reagents calcium carbonate, aluminium oxide, barium carbonate and barium sulfate. The sintering temperature and formation mechanism of the C2·75B1·25A3S¯ mineral were investigated by X-ray diffraction, differential scanning calorimetry/thermogravimetric analysis, scanning electron microscopy and infrared spectrometer analysis. The effect of iron (III) oxide on the C2·75B1·25A3S¯ mineral formation is discussed. The experimental results show that the beginning formation temperature, the large-amount formation temperature and decomposition temperature for C2·75B1·25A3S¯ mineral are 1100°C, 1350°C and 1370°C respectively. C2·75B1·25A3S¯ mineral is formed by solid reaction with 12CaO.7Al2O3 (C12A7), monocalcium aluminate (CA) or monobarium aluminate (BA) regarded as the interphase, as verified by variation of the Gibbs free energy of the reaction. An appropriate amount of iron (III) oxide can replace alumina to form iron-bearing C2·75B1·25A3S¯.
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June 2014
Research Article|
June 01 2014
Formation mechanism of barium calcium sulfoaluminate mineral
Shoude Wang;
Shoude Wang
Associate Professor, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, China
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Yongbo Huang;
Yongbo Huang
Postgraduate student, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, China
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Chenchen Gong;
Chenchen Gong
Lecturer, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, China
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Lingchao Lu;
Lingchao Lu
Professor, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, China
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Xin Cheng
Xin Cheng
Professor, Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, China
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Publisher: Emerald Publishing
Revision Received:
February 01 2013
Revision Requested:
July 16 2013
Accepted:
August 26 2013
Online ISSN: 1751-7605
Print ISSN: 0951-7197
ICE Publishing: All rights reserved
2014
Advances in Cement Research (2014) 26 (3): 169–176.
Article history
Revision Received:
February 01 2013
Revision Requested:
July 16 2013
Accepted:
August 26 2013
Citation
Wang S, Huang Y, Gong C, Lu L, Cheng X (2014), "Formation mechanism of barium calcium sulfoaluminate mineral". Advances in Cement Research, Vol. 26 No. 3 pp. 169–176, doi: https://doi.org/10.1680/adcr.13.00016
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