Journal
CEMENT AND CONCRETE RESEARCH
Volume 142, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2020.106349
Keywords
Neutron irradiation; Finite element simulation; Radiation induced volumetric expansion; Damage; Elastic modulus
Funding
- Department of Energy's Nuclear Energy University Program [DOE-NEUP: DE-NE0008398]
- U.S. Department of Energy [DE-AC05-00OR22725, DE-AC07-05ID14517]
Ask authors/readers for more resources
This study presents a 3D mesoscale simulation approach that considers the effects of temperature, moisture content, and high neutron fluence on damage prediction in concrete irradiated in a test reactor. The simulation framework involves hygro-thermal analysis and radiation-induced volumetric expansion, providing a predictive tool for quantifying damage in concrete due to neutron irradiation under different conditions.
This paper reports the development of a 3D mesoscale hygro-thermal-mechanical simulation approach to predict damage in concrete irradiated in a test reactor. This framework, developed in MOOSE, considers the effects of elevated temperature, moisture content, and high neutron fluence (energy threshold, E > 0.1 MeV) on the mortar and aggregates separately. The first-stage simulation implements hygro-thermal analysis to determine the temperature and RH inside the specimen as a function of imposed radiation energy. These are used as inputs to the second stage, which considers radiation-induced volumetric expansion (RIVE) of aggregates, and creep, shrinkage, and stress-strain response of mortar to predict the expansion, stresses, and damage in specimens made using different coarse aggregates and subjected to different irradiation times. The irradiation time-dependent damage in the mortar is expressed using an isotropic damage parameter. This multi-physics model serves as a predictive tool for damage quantification in concrete due to neutron irradiation.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available