In case of Enlargement method using Post-installed Anchors, mechanical expansion anchors were resisting tensile and shear force of Modular extension structure in exist building. The purpose of this study is to investigate strength of Post-installed Anchor on 16 MPa low strength Concrete under less than standard effective depth(hef). The fracture pattern of the specimens in Pull-out tests was pull-out failure and concrete break out failure. In monotonic load shear tests the fracture pattern was steel failure of anchor and concrete break out failure.

• 김형도(한국건설기술연구원) | Kim, Hyung-Do
• 곽명근(한국건설기술연구원) | Kwak, Myong-keun 교신저자
• 배규웅(한국건설기술연구원) | Bae, Kyu-Woong
• 백정훈(한국건설기술연구원) | Baek, Cheong Hoon