Monitoring alkali-silica reaction significance in nuclear concrete structural members

Nolan Wesley Hayes; Qiang Gui; Ammar Abd-Elssamd; Yann Le Pape; Alain Benjamin Giorla; Sihem Le Pape; Eric R. Giannini; Zhongguo John Ma

doi:10.3151/jact.16.179

Monitoring alkali-silica reaction significance in nuclear concrete structural members

Nolan Wesley Hayes, Qiang Gui, Ammar Abd-Elssamd, Yann Le Pape, Alain Benjamin Giorla, Sihem Le Pape, Eric R. Giannini, Zhongguo John Ma

Nuclear Structures and Construction

Research output: Contribution to journal › Article › peer-review

26 Scopus citations

Abstract

A large-scale testing program on alkali silica reaction (ASR)-affected concrete structural members without shear reinforcement representative of structural members found in nuclear power plants is presented. Three concrete specimens, designed to experience a free expansion rate of approximately 0.15% per year were fabricated and placed within a controlled environmental chamber (38 ± 1°C (100 ± 2°F) and 95 ± 5% relative humidity (RH)). Sixty-four (64) embedded transducers and twelve (12) long-gauge fiber-optic sensors provide evidence of strong anisotropic expansion and oriented ASR-induced cracking resulting from the confinement effect caused by the reinforcement layout and additional structural boundary conditions. Surface cracking is not indicative of internal ASR-induced damage/expansion.

Original language	English
Pages (from-to)	179-189
Number of pages	11
Journal	Journal of Advanced Concrete Technology
Volume	16
Issue number	4
DOIs	https://doi.org/10.3151/jact.16.179
State	Published - Apr 2018

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Nuclear Energy, Light Water Reactor Sustainability Program, under contract number DE-AC05-00OR22725. This manuscript has been coauthored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the arti- cle for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (https://www.energy.gov/ This material is based upon work supported by the U.S. Department of Energy, Office of Nuclear Energy, Light Water Reactor Sustainability Program, under contract number DE-AC05-00OR22725. This manuscript has been coauthored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (https://www.energy.gov/downloads/doe-public-access-plan).

Funders	Funder number
Office of Nuclear Energy, Light Water Reactor Sustainability Program
UT-Battelle, LLC
U.S. Department of Energy	DE-AC05-00OR22725
Office of Nuclear Energy

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abstract = "A large-scale testing program on alkali silica reaction (ASR)-affected concrete structural members without shear reinforcement representative of structural members found in nuclear power plants is presented. Three concrete specimens, designed to experience a free expansion rate of approximately 0.15% per year were fabricated and placed within a controlled environmental chamber (38 ± 1°C (100 ± 2°F) and 95 ± 5% relative humidity (RH)). Sixty-four (64) embedded transducers and twelve (12) long-gauge fiber-optic sensors provide evidence of strong anisotropic expansion and oriented ASR-induced cracking resulting from the confinement effect caused by the reinforcement layout and additional structural boundary conditions. Surface cracking is not indicative of internal ASR-induced damage/expansion.",

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Monitoring alkali-silica reaction significance in nuclear concrete structural members

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