Combined Effects of Temperature and Irradiation on Concrete Damage

Le Pape, Yann; Giorla, Alain; Sanahuja, Julien

doi:10.3151/jact.14.70

Title: Combined Effects of Temperature and Irradiation on Concrete Damage

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Abstract

Aggregate radiation-induced volumetric expansion (RIVE) is a predominant mechanism in the formation of mechanical damage in the hardened cement paste (hcp) of irradiated concrete under fast-neutron flux (Giorla et al. 2015). Among the operating conditions difference between test reactors and light water reactors (LWRs), the difference of irradiation flux and temperature is significant. While a temperature increase is quite generally associated with a direct, or indirect (e.g., by dehydration) loss of mechanical properties (Maruyama et al. 2014), we found that it causes a partial annealing of irradiation amorphization of α-quartz, hence, reducing RIVE rate. Based on data collected by Bykov et al. (1981), an incremental RIVE model coupling neutron fluence and temperature is developed. The elastic properties and coefficient of thermal expansion (CTE) of irradiated polycrystalline quartz are interpreted through analytical homogenization of experimental data on irradiated α-quartz published by Mayer and Lecomte (1960). Moreover, the proposed model, implemented in the meso-scale simulation code AMIE, is compared to experimental data obtained on ordinary concrete made of quartz/quartzite aggregate (Dubrovskii et al. 1967). Substantial discrepancy, in terms of damage and volumetric expansion developments, is found when comparing irradiation scenarios assuming constant flux and temperature, as opposed to more realistic test reactormore » operation conditions.« less

Authors:

Le Pape, Yann ^[1]; Giorla, Alain ^[1]; Sanahuja, Julien ^[2]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
EDF Lab, Cedex (France)

Publication Date:: Fri Jan 01 00:00:00 EST 2016

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1248792

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Advanced Concrete Technology

Additional Journal Information:: Journal Volume: 14; Journal Issue: 3; Journal ID: ISSN 1346-8014

Publisher:: Japan Concrete Institute

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Le Pape, Yann, Giorla, Alain, and Sanahuja, Julien. Combined Effects of Temperature and Irradiation on Concrete Damage.  United States: N. p., 2016. 
Web.  doi:10.3151/jact.14.70.

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                    Le Pape, Yann, Giorla, Alain, & Sanahuja, Julien. Combined Effects of Temperature and Irradiation on Concrete Damage.  United States.  https://doi.org/10.3151/jact.14.70

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                    Le Pape, Yann, Giorla, Alain, and Sanahuja, Julien. Fri .  
"Combined Effects of Temperature and Irradiation on Concrete Damage".  United States.  https://doi.org/10.3151/jact.14.70.  https://www.osti.gov/servlets/purl/1248792.

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@article{osti_1248792,

  title        = {Combined Effects of Temperature and Irradiation on Concrete Damage},

  author       = {Le Pape, Yann and Giorla, Alain and Sanahuja, Julien},

  abstractNote = {Aggregate radiation-induced volumetric expansion (RIVE) is a predominant mechanism in the formation of mechanical damage in the hardened cement paste (hcp) of irradiated concrete under fast-neutron flux (Giorla et al. 2015). Among the operating conditions difference between test reactors and light water reactors (LWRs), the difference of irradiation flux and temperature is significant. While a temperature increase is quite generally associated with a direct, or indirect (e.g., by dehydration) loss of mechanical properties (Maruyama et al. 2014), we found that it causes a partial annealing of irradiation amorphization of α-quartz, hence, reducing RIVE rate. Based on data collected by Bykov et al. (1981), an incremental RIVE model coupling neutron fluence and temperature is developed. The elastic properties and coefficient of thermal expansion (CTE) of irradiated polycrystalline quartz are interpreted through analytical homogenization of experimental data on irradiated α-quartz published by Mayer and Lecomte (1960). Moreover, the proposed model, implemented in the meso-scale simulation code AMIE, is compared to experimental data obtained on ordinary concrete made of quartz/quartzite aggregate (Dubrovskii et al. 1967). Substantial discrepancy, in terms of damage and volumetric expansion developments, is found when comparing irradiation scenarios assuming constant flux and temperature, as opposed to more realistic test reactor operation conditions.},

  doi          = {10.3151/jact.14.70},

  journal      = {Journal of Advanced Concrete Technology},

  number       = 3,

  volume       = 14,

  place        = {United States},

  year         = {Fri Jan 01 00:00:00 EST 2016},

  month        = {Fri Jan 01 00:00:00 EST 2016}

}

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