@Article{jrm.2023.027544,
AUTHOR = {Cheng Hu, Weiheng Xiang, Ping Chen, Yi Yang, Libo Zhou, Jiufang Jiang, Shunkai Li, Yang Ming, Qing Li},
TITLE = {Influence of Bayer Red Mud on the Operational and Mechanical Characteristics of Composite Cement Mortar},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {11},
YEAR = {2023},
NUMBER = {11},
PAGES = {3945--3956},
URL = {http://www.techscience.com/jrm/v11n11/54432},
ISSN = {2164-6341},
ABSTRACT = {The aim of this study is to enhance the value and utilization of red mud generated in the Bayer process by preparing composite cement mortars. The effects of two different types of Bayer red mud with varying physical and
chemical characteristics on the fluidity, mechanical strength, mineral composition, and microstructure of the
composite cement mortar were systematically evaluated. The results showed that the optimal addition of red
mud A was 10 wt%, while it was 20 wt% for red mud B. The mechanical properties of the composite cement
mortar met the standards for P·O42.5 cement. Furthermore, the composite mortar with the addition of red
mud B showed higher flexural and compressive strengths compared to the composite mortar with red mud A.
This improvement is attributed to the smaller particle size of red mud B, which filled the micro-pores and
increased the compactness of the cement stone, as well as its higher content of Na<sub>2</sub>O, K<sub>2</sub>O, and other free alkalis,
which resulted in more obvious alkali activation, accelerating the hydration of the active minerals in the slurry.},
DOI = {10.32604/jrm.2023.027544}
}