The effects of lithium ions on chemical sequence of alkali-silica reaction

详细信息    查看全文

• 作者：Taehwan Kim ; ^{taehwan.kim@okstate.edu" class="auth_mail" title="E-mail the corresponding author} ; Jan Olek
• 关键词：Alkali-Aggregate Reaction (C) ; Alkalis (C) ; Lithium compounds (D) ; Pore solution (B)
• 刊名：Cement and Concrete Research
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：79
• 期：Complete
• 页码：159-168
• 全文大小：1160 K

文摘

This paper presents the results of the investigation on the effects of Li⁺ ions on the chemical and physical changes in the cementitious system undergoing alkali-silica reaction (ASR). Specifically, this paper focuses on determining which chemical steps of ASR processes are affected by the presence of Li⁺ ions in the pore solution in order to provide better understanding of the role of Li⁺ ions in the mitigation process of ASR.

The results presented in this paper strongly support the hypothesis that the Li⁺ ions facilitate the formation of a physical barrier on the surface of reactive silica, and thus prevent further attack on the reactive sites by hydroxyl ions.