Mechanical Research on Bond-Slip Behaviors of Recycled Aggregate Concrete-Filled Square Steel Tubes

Abstract:

In order to research the interface bond-slip behaviors of recycled aggregate concrete-filled square steel tube (RACFSST), ten specimens using waste concrete were designed for launch test. The three changing parameters were concrete strength grade, embedded length and recycled coarse aggregate replacement rate. The load–slip curves of square steel tubes and recycled aggregate concrete were obtained, and starting bond strength and ultimate bond strength influenced by each changing parameter were analyzed. The results show that the replacement rate had a slight influence on the starting bond strength and ultimate bond strength, while the embedded length had the opposite effect. The shorter embedded length specimens had larger bond strength. The concrete strength had a relatively large influence on them.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 3233-3236
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.3233
• Online since: May 2012
• Authors: Jun Tao Li, Jin Jun Xu, Zong Ping Chen, Yi Li, Ying Liang
• Keywords: Bond-Slip, Recycled Aggregate Concrete-Filled Square Steel Tube (RACFSST), Starting Bond Strength, Ultimate Bond Strength

References

[1] Oikonomou N D: Cement and Concrete Composites, Vol. 27(2) (2005), p.315−318

[2] Olorunsogo F T, Padayachee N: Cement and Concrete Research, Vol. 32(2) (2002), p.179−185

[3] Luo Xingwen, Guan Changsheng: Rock and Soil Mechanics,Vol.28(11) (2007),p.2440−2444

[4] Sun Yuedong, Xiao Jianzhuang, Zhou Deyuan and Zhang Peng: China Civil Engineering Journal, Vol. 39(5) (2006),pp.9-15