Experimental Research on Shear of Interface between New and Old Concrete with Bond-In Reinforcement and Practical Calculation

Abstract:

The shear property of bonding interface between new and old concrete with bonding-in reinforcement was researched. The shear experiment was done to 6 groups with 18 specimens with 5 interface agent types of casting new concrete directly, painting neat cement, painting merchandise agent and with bonded-in reinforcement. The shear properties of bonding interface were analyzed, and the shear strengths were compared with each other. The experiment results show that the shear strength of the interface could be enhanced remarkably with bonded-in reinforcement. The practical calculation formula was proposed, considering the influence of interface roughness, agent and bonded-in reinforcement. In the end, the formula was validated by other experiment and could be used in the strengthening design for concrete structure.

• Periodical: Advanced Materials Research (Volumes 941-944)
• Pages: 756-760
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.941-944.756
• Online since: June 2014
• Authors: Li Li*, Zhen Ling Wang
• Keywords: Bonded-In Reinforcement, Bonding Interface, New and Old Concrete, Shear Property

References

[1] Gao Jian-ping, Pan Jing-long, Wang Yu-guang: J. of Harbin University of C . E . & Architecture(in Chinese). 2001，34(5), p.25.

[2] Han Juhong, Zhao Guofan.: China Civil Engineering Journal(in Chinese). 2003, 36(6): p.31.

[3] Wang Zhenling, Lin Yongjun: J. of Southwest Jiaotong University(in Chinese). 2005, 47(4).

[4] Guo Jinjun: Study on new and old concrete bonding mechanics after high temperature [D]. Dalian university of technology Ph. D thesis(in Chinese). (2003).