This study is, when we pour the concrete, doing bonding shear performance evaluation to search the influence about an adhesive interface by a generated cold joint with a retardation time. In conclusion, this experiment shows that the higher a compressive strength of the concrete is, the higher a reduction ratio of the bonding shear strength is, and the instance of a none agitation and a compaction with 15 minutes of a retardation time are the lowest influence in a whole of the results; each of the reduction ratio of the bonding shear strength is approximately 4.5%.

• 장현오(한양대학교 건축시스템공학과, 박사과정) | Jang, Hyun O
• 김민성(한양대학교 건축시스템공학과, 석사과정) | Kim, Min Seong
• 조근희(한국건설기술연구원 구조융합연구소, 수석연구원) | Cho, Keun hee
• 이한승(한양대학교 건축학부 교수, 공학박사) | Lee, Han Seung 교신저자