The Role of Brownmillerite in Preparation of High-Belite Sulfoaluminate Cement Clinker

Xuemei Chen; Jun Li; Zhongyuan Lu; Serina Ng; Yunhui Niu; Jun Jiang; Yigang Xu; Zhenyu Lai; Huan Liu

doi:10.3390/app12104980

Applied Sciences (May 2022)

The Role of Brownmillerite in Preparation of High-Belite Sulfoaluminate Cement Clinker

Xuemei Chen,
Jun Li,
Zhongyuan Lu,
Serina Ng,
Yunhui Niu,
Jun Jiang,
Yigang Xu,
Zhenyu Lai,
Huan Liu

Affiliations

Xuemei Chen: State Key Laboratory of Environment-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Jun Li: State Key Laboratory of Environment-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Zhongyuan Lu: State Key Laboratory of Environment-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Serina Ng: Shijiazhuang Chang’An Yucai Building Materials Co., Ltd., No. 11 Fucheng Rd., Shijiazhuang 051430, China
Yunhui Niu: State Key Laboratory of Environment-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Jun Jiang: State Key Laboratory of Environment-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Yigang Xu: Jiahua Special Cement Co., Ltd., No. 2 Ma’anshan Jiufeng Rd, Shizhong District, Leshan 614003, China
Zhenyu Lai: State Key Laboratory of Environment-Friendly Energy Materials, School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China
Huan Liu: Shijiazhuang Chang’An Yucai Building Materials Co., Ltd., No. 11 Fucheng Rd., Shijiazhuang 051430, China

DOI: https://doi.org/10.3390/app12104980
Journal volume & issue: Vol. 12, no. 10
p. 4980

Abstract

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High-belite sulfoaluminate cement (HBSC) clinker containing brownmillerite was prepared using the industrial raw materials limestone, aluminum tailings, aluminum ore waste rock, and anhydrite. The effect of brownmillerite on clinker sintering and clinker minerals and the mechanical performance of HBSC was investigated using thermal analysis, petrographic analysis, and quantitative X-ray diffraction (QXRD). Results indicated that brownmillerite promoted the formation of clinker minerals and stabilized calcium sulfoaluminate (C4A3$) through the substitution of Fe3+ for Al3+ in C4A3$, which increased the actual C4A3$ content and decreased the brownmillerite content compared to that of the designed theoretical mineral composition. However, the early compressive strength of HBSC pastes decreased with the increase in brownmillerite content due to the decrease in the total amount of early-strength clinker minerals. Brownmillerite also influenced belite (C2S) structures and increased the γ-C2S content with poor hydration activity, thus inhibiting the strength development of HBSC pastes. The proper amount of brownmillerite in HBSC clinker can ensure the early strength and strength development of HBSC pastes.

Published in Applied Sciences

ISSN: 2076-3417 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Engineering (General). Civil engineering (General); Science: Biology (General); Science: Physics; Science: Chemistry
Website: http://www.mdpi.com/journal/applsci

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