Alkali - Silica Reaction Inhibited by LiOH and Its Mechanism

• Published in: Journal of Wuhan University of Technology. Materials science edition Vol. 18; no. 1; pp. 13 - 16
• Main Author: MOXiang-yin XUZhong-zi WUKe-ru TANGMing-shu
• Format: Journal Article
• Language: English
• Published: Wuhan Springer Nature B.V 01.03.2003; Nanjing Normal University; Tongji University%Nanjing University of Technology%Tongji University
• Subjects: Alkali-silica reactions; ASR; Effectiveness; LiOH; Mortars (material); Perlite; 化学反应; 反应机制; 氢氧化锂; 碱金属-硅反应; 长时间反应; lithium compounds; long-term performance; mechanism; alkali-silica reaction
• ISSN: 1000-2413; 1993-0437
• DOI: 10.1007/bf02835077

A high alkali reactive aggregate-zeolitization perlite was used to test the long-term effectiveness of LiOH in inhibiting alkali-silica reaction. In this paper, the rigorous conditions were designed that the mortar bars had been cured at 80℃ for 3 years after autoclaved 24 hours at 150℃. Under this condition, LiOH was able to inhibit the alkali-silica reaction long-term effectiveness. Not only the relationship between the molar ratio of n ( Li)/(Na) and the alkali corttents in systems was established, but also the governing mechanism of such effects was also studied by SEM.