Study for long-term adhesion characteristics evaluation of post-installed anchor

Shobu, Takahisa  ; Mukai, Tomohisa*; Ariki, Katsuyoshi*; Choe, H.*; Yamamoto, Shin*; Han, B.*; Morooka, Satoshi  ; Kurita, Keisuke  ; Iikura, Hiroshi  

In this study, it was conducted to evaluate the long-term adhesion characteristics of post-installed anchors using neutrons, which have extremely high penetrating power for materials. In CT measurement, it was clarified that the observation inside the reinforced concrete of about 60 mm can be evaluated with the spatial resolution of about 0.2 mm. On the other hand, since the strain distribution under loading did not show a monotonous change in the strain distribution of the anchor, it was clarified that there are some problems.