Penetration of tritiated water vapor through hydrophobic paints for concrete materials

Y. Edao, Y. Kawamura, T. Yamanishi, S. Fukada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Behavior of tritium transfer through hydrophobic paints of epoxy and acrylic-silicon resin was investigated experimentally. The amounts of tritium permeating through their paint membranes were measured under the HTO concentration condition of 2-96 Bq/cm3. Most of tritium permeated through the paints as a molecular form of HTO at room temperature. The rate of tritium permeating through the acrylic-silicon paint was correlated in terms of a linear sorption/release model, and that through the epoxy paint was controlled by a diffusion model. Although effective diffusivity estimated by a diffusion model was obtained 1.1 × 10-13-1.8 × 10-13 m2/s for epoxy membranes at the temperature of 21-26 °C, its value was found to be hundreds times larger than that for cement-paste coated with epoxy paint. Hence, resistance of tritium diffusion through interface between cement-paste and the epoxy paint was considered to be the most effective in the overall tritium transfer process. Clarification of tritium transfer behavior at the interface is important to understand the mechanism of tritium transfer in concrete walls coated with various paints.

Original languageEnglish
Pages (from-to)2062-2065
Number of pages4
JournalFusion Engineering and Design
Volume89
Issue number9-10
DOIs
Publication statusPublished - Oct 2014

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Tritium
Steam
Paint
Water vapor
Concretes
Silicon
Ointments
Acrylics
Cements
Membranes
Sorption
Resins
Temperature

All Science Journal Classification (ASJC) codes

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

Cite this

Penetration of tritiated water vapor through hydrophobic paints for concrete materials. / Edao, Y.; Kawamura, Y.; Yamanishi, T.; Fukada, S.

In: Fusion Engineering and Design, Vol. 89, No. 9-10, 10.2014, p. 2062-2065.

Research output: Contribution to journalArticle

Edao, Y. ; Kawamura, Y. ; Yamanishi, T. ; Fukada, S. / Penetration of tritiated water vapor through hydrophobic paints for concrete materials. In: Fusion Engineering and Design. 2014 ; Vol. 89, No. 9-10. pp. 2062-2065.
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