BOND BEHAVIOR BETWEEN STEEL-FRP COMPOSITE BAR (SFCB) AND CONCRETE UNDER TENSILE LOADING
Steel-FRP Composite Bar (SFCB) is a new kind of reinforcing material which is made up of steel wrapped by fiber reinforced polymer (FRP) in longitudinal direction. Previous study showed that SFCB has high elastic modulus, stable post-yield stiffness and low residual strain under repeated tensile loading. The bond behavior between SFCB and concrete is analyzed in this paper based on 9 standard pullout tests following Chinese code. The results show that there is good bond behavior between SFCB and concrete; there are three failure modes including SFCB pulling out after steel yielding, SFCB pulling out before steel yielding, and SFCB rupture. The theoretical model for the bond-slip relationship of SFCB bars in concrete also has been preliminary established. For the factory production of SFCB, there is some variation of bond behavior, which can be improved by sandblasting, changing of the wrap direction, rib spacing and further improvement of production technology.
steel-FRP composite bar (SFCB) pullout test bond strength
Lin- Lin Zhang Gang Wu Ze-Yang Sun Zhi-Shen Wu
International Institute for Urban Systems Engineering, Southeast University, Nanjing 210096, P.R. Ch International Institute for Urban Systems Engineering, Southeast University, Nanjing 210096, P.R. Ch
国际会议
广州
英文
95-101
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）