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Alkali–Silica Reaction: the Influence of Calcium on Silica Dissolution and the Formation of Reaction Products

✍ Scribed by Andreas Leemann; Gwenn Le Saout; Frank Winnefeld; Daniel Rentsch; Barbara Lothenbach


Book ID
109263355
Publisher
John Wiley and Sons
Year
2010
Tongue
English
Weight
495 KB
Volume
94
Category
Article
ISSN
0002-7820

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Mechanism of alkali-silica reaction and
✍ H. Wang; J.E. Gillott 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 415 KB

Experiments indicate that Ca(OH)2 [CH] aggravates alkali-silica reaction causing increased expanslon of mortar bars. Ca(OH) 2 has two major functions: firstly it acts a "buffer" to maintain a high pH, i.e. a high concentration of hydroxyl ions in pore solutions; secondly, Ca++ ions may exchange for