Effect of hydrophobic paints coating for tritium reduction in concrete materials

Y. Edao, S. Fukada, Y. Nishimura, K. Katayama, T. Takeishi, Y. Hatano, A. Taguchi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The effects of hydrophobic paint coating on a concrete material of cement paste on the tritium transport are investigated. The cement paste is coated with two kinds of paints, acrylic-silicon resin paint and epoxy resin paint. We investigated the amount of tritium trapped in the samples exposed to tritiated water vapor by means of sorption and release. It was found that both the hydrophobic paints could reduce effectively tritium permeation during 50 days exposure of tritiated water vapor. The effect of tritium reduction of the epoxy paint was higher than that of silicon while the amount of tritium trapped in the epoxy paint was larger than that of silicon due to difference of the structure. Based on an analysis of a diffusion model, the rate-determining step of tritium migration through cement paste coated with the paints is diffusion through the paints respectively. It was found that tritium was easy to penetrate through silicon because there were many pores or voids in the silicon comparatively. In the case of tritium released from the epoxy paint, it is considered that tritium diffusion in epoxy is slow due to retardation by isotope exchange reaction to water included in epoxy paint.

Original languageEnglish
Pages (from-to)995-998
Number of pages4
JournalFusion Engineering and Design
Volume87
Issue number7-8
DOIs
Publication statusPublished - Aug 1 2012

Fingerprint

Tritium
Paint
Concretes
Coatings
Silicon
Ointments
Cements
Steam
Water vapor
Epoxy Resins
Adhesive pastes
Permeation
Epoxy resins
Isotopes
Acrylics
Sorption
Resins

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

Effect of hydrophobic paints coating for tritium reduction in concrete materials. / Edao, Y.; Fukada, S.; Nishimura, Y.; Katayama, K.; Takeishi, T.; Hatano, Y.; Taguchi, A.

In: Fusion Engineering and Design, Vol. 87, No. 7-8, 01.08.2012, p. 995-998.

Research output: Contribution to journalArticle

Edao, Y, Fukada, S, Nishimura, Y, Katayama, K, Takeishi, T, Hatano, Y & Taguchi, A 2012, 'Effect of hydrophobic paints coating for tritium reduction in concrete materials', Fusion Engineering and Design, vol. 87, no. 7-8, pp. 995-998. https://doi.org/10.1016/j.fusengdes.2012.02.058
Edao, Y. ; Fukada, S. ; Nishimura, Y. ; Katayama, K. ; Takeishi, T. ; Hatano, Y. ; Taguchi, A. / Effect of hydrophobic paints coating for tritium reduction in concrete materials. In: Fusion Engineering and Design. 2012 ; Vol. 87, No. 7-8. pp. 995-998.
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