[2N11-17] Various Measurements and Non-destructive Inspection by Using Particle Accelerators

[2N15] Development of A Mobile 3.95 MeV Electron Linac-driven Neutron Source for On-site Non-destructive-testing of Concrete Bridges

*Jean-Michel Antoine Bereder¹, Yuki Mitsuya¹, Yuya Takahashi¹, Katsuhiro Dobashi¹, Joichi Kusano², Yasushi Tanaka³, Yoshinobu Oshima⁴, Masahiro Ishida⁴, Mitsuru Uesaka¹ (1. School of Engineering, Univ. of Tokyo, 2. Accuthera Inc., 3. IIS, Univ. of Tokyo, 4. PWRI)

Keywords:Non destructive testing, Mobile electron linac, Bridge inspection, Moisture detection, Neutron source

The major cause of corrosion of rebars is the invasion of oxide ions and chloride ions by the free water reaching the rebars. A backscatter neutron moisture detection system was developed. The crack detection experiments of concrete structures was conducted, in order to detect free water penetration paths.