The paper introduces an experimental program for the newly developed vertical joints between Precast Concrete (PC) walls to improve their in-plane shear capacity. Compared to the existing vertical joints, two types of vertical joints were developed by increasing the transverse reinforcement ratio and improving frictional force at the joint interface. A total of four specimens including the Reinforced Concrete (RC) wall and PC walls with developed vertical joints were designed and constructed. The constructed specimens were experimentally investigated through monotonic shear tests. The observed damage, load-deformation relationship, strain and strength are investigated and compared with the cases of RC wall specimen. Experimental results indicate that the maximum force and initial stiffness of the PC wall with proposed vertical joints were decreased by comparing with those of RC wall. However, the ultimate displacement increased by up to 217.30% compared to the RC wall specimen. In addition, brittle failure did not occurred and relatively few cracks and damages occurred.

Abstract
1. 서론
2. 개발 PC 벽체 수직접합부
    2.1 이음철근 및 전단키 적용 수직접합부
    2.2 도브테일 형상 수직접합부
3. PC 벽체 수직접합부의 전단성능평가
    3.1 실험체 개요
    3.2 사용 재료
    3.3 실험 방법
4. 실험결과 및 분석
    4.1 균열 및 파괴양상
    4.2 하중-변위 관계
    4.3 전단변형
5. 결론
감사의 글
References

• 문교영(계명대학교 건축공학전공, 박사과정) | Moon Kyo Young (Department of Architectural Engineering, Keimyung University)
• 김승직(계명대학교 건축공학전공 부교수, 공학박사) | Kim Sung Jig (Department of Architectural Engineering, Keimyung University) Corresponding author
• 이기학(세종대학교 건축공학과 교수, 공학박사) | Lee Kihak (Department of Architectural Engineering, Sejong University)
• 김용남(㈜미래구조엔지니어링, 대표) | Kim Yong Nam (Mirae Structural Engineering.co., Ltd)