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Contribution of modeling to the appraisal of infrastructures affected by alkali-silica reaction



Title: Contribution of modeling to the appraisal of infrastructures affected by alkali-silica reaction
Author(s): Bruno Capra, Kefei Li
Paper category : conference
Book title: International RILEM Symposium on Concrete Science and Engineering: A Tribute to Arnon Bentur
Editor(s): J. Weiss, K. Kovler, J. Marchand, and S. Mindess
Print-ISBN: None
e-ISBN: 2912143926
Publisher: RILEM Publications SARL
Publication year: 2004
Nb references: 19
Language: English


Abstract: The alkali-silica reaction (ASR) is a group of internal chemical processes in concrete between the reactive silica in aggregate and the pore solution. The formed chemical products have an expansion capacity and can accumulate a pressure surpassing the material tension strength. The impact of ASR on the durability of concrete infrastructures can be very important and becomes presently a concern for structure management and maintenance. To this end numerous research efforts are dedicated to quantify the behaviour of affected concrete. After a brief review of the acquired chemical knowledge and the available chemo-mechanical models, the structural degradation evaluation is treated in two typical cases: one with the reconstituted expansion characteristics of structural concrete and the other without this information. Then credibility of model-based quantification is discussed for each case. Finally some general conclusions are drawn on how to make a rational use of the laboratory models.


Online publication: 2004-03-25
Classification: General Issues in Durability
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143926.050