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Long-term effectiveness and mechanism of LiOH in inhibiting alkali-silica reaction

Mo, Xiangyin / Yu, Chenjie / Xu, Zhongzi

A practical alkali reactive aggregate-Beijing aggregate was used to test the long-term effectiveness of LiOH in inhibiting alkali-aggregate reaction (AAR) expansion. In this paper, the most rigorous conditions were so designed that the mortar bars had been cured at 80 degree C for 3 years after being autoclaved for 24 h at 150 degree C. At this condition, LiOH was able to inhibit long-term alkali-silica reaction (ASR) expansion effectively. Not only was the relationship between molar ratio of n(Li)/n(Na) and the alkali contents in systems established, but also the governing mechanism of such effects was studied by SEM.

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Long-term effectiveness and mechanism of LiOH in inhibiting alkali-silica reaction

Mo, Xiangyin / Yu, Chenjie / Xu, Zhongzi

A practical alkali reactive aggregate-Beijing aggregate was used to test the long-term effectiveness of LiOH in inhibiting alkali-aggregate reaction (AAR) expansion. In this paper, the most rigorous conditions were so designed that the mortar bars had been cured at 80 degree C for 3 years after being autoclaved for 24 h at 150 degree C. At this condition, LiOH was able to inhibit long-term alkali-silica reaction (ASR) expansion effectively. Not only was the relationship between molar ratio of n(Li)/n(Na) and the alkali contents in systems established, but also the governing mechanism of such effects was studied by SEM.

Long-term effectiveness and mechanism of LiOH in inhibiting alkali-silica reaction

Mo, Xiangyin / Yu, Chenjie / Xu, Zhongzi

A practical alkali reactive aggregate-Beijing aggregate was used to test the long-term effectiveness of LiOH in inhibiting alkali-aggregate reaction (AAR) expansion. In this paper, the most rigorous conditions were so designed that the mortar bars had been cured at 80 degree C for 3 years after being autoclaved for 24 h at 150 degree C. At this condition, LiOH was able to inhibit long-term alkali-silica reaction (ASR) expansion effectively. Not only was the relationship between molar ratio of n(Li)/n(Na) and the alkali contents in systems established, but also the governing mechanism of such effects was studied by SEM.

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Title:

Long-term effectiveness and mechanism of LiOH in inhibiting alkali-silica reaction

Contributors:

Mo, Xiangyin (author) / Yu, Chenjie (author) / Xu, Zhongzi (author)

Published in:

Cement and Concrete Research ; 33 ; 115-119

Publication date:

2002

Size:

5 Seiten, 13 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0008-8846(02)00934-1

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Lithiumhydroxid , Reaktionskinetik , Siliciumoxid , Autoklav , Mörtel , Rasterelektronenmikroskopie , Alkali-Silica-Reaktion , Inhibitor (Hemmstoff)

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