期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 301, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2021.123982
关键词
C-A-S-H; Characterization; Alkali; LiOH; Katoite
资金
- National Natural Science Foundation of China [51872137]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
In this study, C-A-S-H with varying Li contents were synthesized via hydrothermal method, with the incorporation of Li leading to changes in interlayer distance, crystallinity, and polymerization degree. The specific surface area of C-(Li)-A-S-H decreased significantly with the addition of LiOH, and the formation of katoite on the surface at high LiOH concentrations altered the pore structure. The Ca/Li ratio was identified as a key parameter for successful Li incorporation into C-A-S-H.
In this paper, C-A-S-H with different Li contents have been synthesized by hydrothermal method at 95celcius. Incorporation of Li decreases mean interlayer distance, increases crystallinity and polymerization degree of C-A-S-H. The specific surface area of C-(Li)-A-S-H decreases sharply with the addition of LiOH. What's more, katoite forms on the surface of C-(Li)-A-S-H and results in the change of pore structure at high LiOH concentrations. The results show that Ca/Li ratio is the key parameter for Li incorporation into C-A-S-H. (c) 2021 Elsevier Ltd. All rights reserved.
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