Journal
NUCLEAR ENGINEERING AND DESIGN
Volume 310, Issue -, Pages 295-310Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.nucengdes.2016.10.012
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Funding
- U.S. Department of Energy (DOE) Light Water Reactor Sustainability Program
- UT-Battelle, LLC [DE-AC05-00OR22725]
- U.S. Department of Energy
- Department of Energy
- DOE Public Access Plan
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The residual structural shear resistance of concrete members without shear reinforcement and subject to alkali-aggregate reaction (ASR) is investigated by finite element analysis. A parametric numerical study of 648 analyses considering various structural members' geometries, boundary conditions, ASR-induced losses of materials properties, ASR expansions and reinforcement ratios is conducted. As a result of competitive mechanisms (e.g., ASR-induced prestressing caused by the longitudinal reinforcement) and loss of concrete materials properties, important scatter in terms of gain or loss of shear strength is observed: about 50% of the studied configurations lead to a degradation of structural performance. The range of variation in terms of post-ASR shear resistance is extremely scattered, in particular, when ASR results in out of -plane expansion only. Influencing factors are derived by two methods: (i) visual inspection of boxplots and probability distributions, and (ii) information criteria within multiple-linear regression analysis. (C) 2016 Elsevier B.V. All rights reserved.
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