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

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

Content Provider	MDPI
Author	Chen, Xuemei Li, Jun Lu, Zhongyuan Ng, Serina Niu, Yunhui Jiang, Jun Xu, Yigang Lai, Zhenyu Liu, Huan
Copyright Year	2022
Description	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 $(C_{4}A_{3}) through the substitution of $Fe^{3+}$ for $Al^{3+}$ in $C_{4}A_{3}, which increased the actual $C_{4}A_{3} 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 $(C_{2}$S) structures and increased the $γ-C_{2}$S 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.
Starting Page	4980
e-ISSN	20763417
DOI	10.3390/app12104980
Journal	Applied Sciences
Issue Number	10
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-05-14
Access Restriction	Open
Subject Keyword	Applied Sciences Brownmillerite High-belite Sulfoaluminate Cement Clinker Mineral Composition Compressive Strength
Content Type	Text
Resource Type	Article

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