Repair of Alkali-Silica Reaction Damage in a Massive Arch Skewback
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Bibliographic Details
| Author(s): |
Wagdy Wassef
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | 18th IABSE Congress: Innovative Infrastructures – Towards Human Urbanism, Seoul, Korea, 19-21 September 2012 | ||||
| Published in: | IABSE Congress Seoul 2012 | ||||
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| Page(s): | 1500-1507 | ||||
| Total no. of pages: | 8 | ||||
| DOI: | 10.2749/222137912805112121 | ||||
| Abstract: |
Damage due to alkali-silica reaction (ASR) may be found in concrete structures and pavements. Due to the alkalinity of Portland cement, a chemical reaction takes place at the interface between certain types of aggregate and the cement paste. The chemical reaction produces a chemical compound generally referred to as the “ASR gel”. In the presence of moisture, the ASR gel expands causing the aggregate to separate from the surrounding cement paste. This process causes the concrete to deteriorate. |
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| Keywords: |
post-tensioning alkali-silica reaction bridge rehabilitation concrete drilling concrete coring
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