Evaluation of irradiation effects on concrete structure-background and preparation of neutron irradiation test

Ippei Maruyama, Osamu Kontani, Shohei Sawada, Osamu Sato, Go Igarashi, Masayuki Takizawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

21 Citations (Scopus)


Methods for assessing the soundness of concrete exposed to irradiation are being developed within the framework of a project of the Nuclear Regulation Authority (NRA) "Japan Ageing Management Program for System Safety". This paper presents the background of this project and recent research works. The major reason for deterioration of concrete under irradiation conditions is expansion of aggregate due to neutron and gamma-ray irradiation. Dislocation of atoms in covalent structures of aggregate minerals, and resultant lattice constant change and alteration to amorphous phase are produced by fast neutrons. In addition, through electronic exertion, some energy deposition is accumulated as permanent distortion/strain in atomic structures. Other effects are also summarized. We plan to conduct a neutron irradiation test from May 2013. In selecting mix proportions and concrete components for the irradiation test program, sample size as a function of capsule size and gamma-heating, cement type, and aggregate size and type are determined based on preliminary experiments.

Original languageEnglish
Title of host publicationRAM; Plant Syst., Struct., Components and Mat. Issues; Simple and Combined Cycles; Adv. Energy Syst. and Renewables (Wind, Solar and Geothermal); Energy Water Nexus; Thermal Hydraulics and CFD;
PublisherAmerican Society of Mechanical Engineers
ISBN (Print)9780791856062
Publication statusPublished - 2013
EventASME 2013 Power Conference, POWER 2013 - Boston, MA, United States
Duration: 2013 Jul 292013 Aug 1

Publication series

NameAmerican Society of Mechanical Engineers, Power Division (Publication) POWER


ConferenceASME 2013 Power Conference, POWER 2013
Country/TerritoryUnited States
CityBoston, MA

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Mechanical Engineering


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