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 language | English |
|---|---|
| Pages (from-to) | 2062-2065 |
| Number of pages | 4 |
| Journal | Fusion Engineering and Design |
| Volume | 89 |
| Issue number | 9-10 |
| DOIs | |
| Publication status | Published - Oct 2014 |
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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 journal › Article
}
TY - JOUR
T1 - Penetration of tritiated water vapor through hydrophobic paints for concrete materials
AU - Edao, Y.
AU - Kawamura, Y.
AU - Yamanishi, T.
AU - Fukada, S.
PY - 2014/10
Y1 - 2014/10
N2 - 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.
AB - 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.
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U2 - 10.1016/j.fusengdes.2014.02.059
DO - 10.1016/j.fusengdes.2014.02.059
M3 - Article
AN - SCOPUS:84905976785
VL - 89
SP - 2062
EP - 2065
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
SN - 0920-3796
IS - 9-10
ER -