Penetration of tritiated water vapor through hydrophobic paints for concrete materials

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

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)


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.

ジャーナルFusion Engineering and Design
出版ステータス出版済み - 10月 2014

!!!All Science Journal Classification (ASJC) codes

  • 土木構造工学
  • 原子力エネルギーおよび原子力工学
  • 材料科学一般
  • 機械工学


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