Song, Y., Qian, X., Yan, D., Unluer, C. , Peng, Y., Kong, D., Hu, C., Wang, S. and Ruan, S. (2023) Understanding the role of seeds in reactive magnesia cement (RMC) formulations. Journal of the American Ceramic Society, 106(6), pp. 3812-3831. (doi: 10.1111/jace.19038)
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Abstract
Nucleation effects of seeds in reactive magnesia cement (RMC) systems have been reported, but this process has never been directly observed. In this study, different types and contents of seeds were introduced in RMC formulations. Results show that seeded RMC samples revealed accelerated hydration/carbonation that led to their more rapid strength development, and the use of magnesite outperformed other seeds given their overall performances, as explained by their more homogenous microstructures. Further, in the model solution, the amount of Mg2+ ions adsorbed onto seeds particles continuously increased with the increment of Mg2+ concentrations, confirming the nucleation effects of seeds in RMC formulations directly, and seeds surfaces revealed a much higher affinity for Mg2+ ions than other ions due to their acid-base interactions. Therefore, the use of seeds could act as accelerators that shorten the curing period of RMC-based concrete products on a large scale.
| Item Type: | Articles |
|---|---|
| Additional Information: | The authors acknowledge the financial support of the National Natural Science Foundation of China (grant number: 52108255) and Fundamental Research Funds for the Central Universities (grant number: 2021QNA4023). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Unluer, Dr Cise |
| Authors: | Song, Y., Qian, X., Yan, D., Unluer, C., Peng, Y., Kong, D., Hu, C., Wang, S., and Ruan, S. |
| College/School: | College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| Journal Name: | Journal of the American Ceramic Society |
| Publisher: | Wiley |
| ISSN: | 0002-7820 |
| ISSN (Online): | 1551-2916 |
| Published Online: | 04 February 2023 |
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