Studies on lithium salts to mitigate ASR-induced expansion in new concrete: a critical review
- Department of Civil Engineering, University of New Brunswick, PO Box 4400, Fredericton, NB E3B 5A3 (Canada)
- MRI Center, University of New Brunswick, PO Box 4400, Fredericton, NB E3B 5A3 (Canada)
- Department of Civil Engineering, University of Texas, Austin, TX 78712 (United States)
This paper provides a critical review of the research work conducted so far on the suppressive effects of lithium compounds on expansion due to alkali-silica reaction (ASR) in concrete and on the mechanism or mechanisms by which lithium inhibits the expansion. After a thorough examination of the existing literature regarding lithium salts in controlling ASR expansion, a summary of research findings is provided. It shows that all the lithium salts studied, including LiF, LiCl, LiBr, LiOH, LiOH.H{sub 2}O, LiNO{sub 3}, LiNO{sub 2}, Li{sub 2}CO{sub 3}, Li{sub 2}SO{sub 4}, Li{sub 2}HPO{sub 4}, and Li{sub 2}SiO{sub 3}, are effective in suppressing ASR expansion in new concrete, provided they are used at the appropriate dosages. Among these compounds, LiNO{sub 3} appears to be the most promising one. Although the mechanism(s) for the suppressive effects of lithium are not well understood, several mechanisms have been proposed. A detailed discussion about these existing mechanisms is provided in the paper. Finally, some recommendations for future studies are identified.
- OSTI ID:
- 20706236
- Journal Information:
- Cement and Concrete Research, Vol. 35, Issue 9; Other Information: DOI: 10.1016/j.cemconres.2004.10.013; PII: S0008-8846(04)00450-8; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0008-8846
- Country of Publication:
- United States
- Language:
- English
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