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 the strength showed 19% less than that of the design strength on test anchor manufacturer. In cyclic load shear tests the fracture pattern was steel failure of anchor and the strength showed 10% less value than that.

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