[2I11-16] Applications of X-ray and Neutron

[2I12] On-site moisture measurement of PC bridges using a mobile 3.95 MeV electron linac-driven neutron source

*Jean-Michel Antoine Bereder¹, Yuki Mitsuya¹, Yuya Takahashi³, Katsuhiro Dobashi¹, Joichi Kusano⁵, Yasushi Tanaka², Yoshinobu Oshima⁴, Masahiro Ishida⁴, Mitsuru Uesaka¹ (1. UT NEM, 2. UT IIS, 3. UT CE, 4. PWRI, 5. Accuthera Inc.)

Keywords:Non Destructive Testing, Mobile Electron Linac, Bridge Inspection, Moisture Detection, Neutron Source

The major cause of corrosion of PC wires is the invasion of oxide ions and chloride ions by the free water reaching the wires. A backscatter neutron moisture detection system was developed. A series of experiments for detecting moisture poition inside the PC duct were conducted in this research.