Alkali-silica reaction expansion model for confined concrete with stress-dependency and casting direction anisotropy

Hayes, Nolan W.; Benboudjema, Farid; Le Pape, Yann; Ma, Zhongguo John

doi:10.1016/j.cemconres.2023.107260

Alkali-silica reaction expansion model for confined concrete with stress-dependency and casting direction anisotropy

Journal Article · Sat Jul 22 00:00:00 EDT 2023 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2023.107260· OSTI ID:1992730

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Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); University of Tennessee, Knoxville, TN (United States)
University Paris-Saclay, Gif-sur-Yvette (France)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
University of Tennessee, Knoxville, TN (United States)

Alkali-silica reaction (ASR) is a deleterious chemical reaction between alkali hydroxyl ions and types of silica found in some aggregates of concrete. Owners and regulators of nuclear power plants aim to ensure the safety of the concrete structures with optimal maintenance strategies. A new model was developed for predicting the expansion of concrete structures affected by alkali-silica reaction. The model includes a novel combination of existing models as an alkali-silica reaction advancement model, a casting direction anisotropic expansion model, a stress-dependent anisotropic expansion model, and a material property evolution model dependent on the degree of ASR expansion. The model parameters were calibrated based on existing literature data and data generated by previous efforts of this study. The calibrated model was then validated with the experiments carried out in previous efforts of this study. The model was shown to accurately predict the ASR-expansion of large-scale reinforced concrete specimens with confinement.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1992730

Journal Information:: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 1 Vol. 173; ISSN 0008-8846

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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36 MATERIALS SCIENCE
alkali-silica reaction
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model

Alkali-silica reaction expansion model for confined concrete with stress-dependency and casting direction anisotropy

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References (14)

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