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Abstract：
Alkali-silica reaction (ASR)of concrete is essentially the reaction of ions and water molecules in the pore solution with active silica in the aggregate. According to the influence of different ions on ASR,ions can be divided into alkali ions (Na+,K+ and OH-),lithium ion and aluminum ion,calcium ion. Alkali ions promote the alkali-silica reaction of concrete,resulting in more severe expansive damage to concrete. Lithium and aluminum ions slow down the expansive damage caused by alkali-silica reaction of concrete. The role of Ca2+ is closely related to n(Ca)/ n(Si)(molar ratio). When the n(Ca)/ n(Si)2+ promotes ASR. When the n(Ca)/ n(Si)%0. 2,Ca2+ inhibits ASR. Firstly,the latest research progresses of ASR products are introduced,including the types,micro morphology,atomic structure and water stability of ASR products. Then,influences of these ions on the ASR process,the composition of ASR products,the crystallization properties and expansion of ASR products are reviewed. Finally,the future research direction of the influence of different ions on ASR is prospected. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.
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Materials Reports
ISSN： 1005-023X
CN： 50-1078/TB
Year： 2024
Issue： 2
Volume： 38
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SCOPUS Cited Count：
ESI Highly Cited Papers on the List： 0 Unfold All
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30 Days PV： 8
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