侧向拉力下光圆钢筋与自密实轻骨料混凝土的粘结性能

Bond Behavior of Plain Round Bars in Self-compacting Lightweight Concrete Subjected to Lateral Tension

采用39个立方体拉拔试件进行了试验,通过测定粘结强度、残余粘结强度和极限粘结应力对应的滑移量,研究了光圆钢筋与自密实轻骨料混凝土在不同侧向拉力下的粘结性能.结果表明,随着侧向拉力的增加,相对粘结强度和残余粘结强度降低,而极限粘结应力对应的滑移量先增大后保持不变.

A total of 39 pull-out specimens are tested. Through the measurements of bond strength, the residual bond strength, slip at the peak bond stress, the bond behavior between plain round bars and self-compacting lightweight concrete under lateral tension with different ratios are analyzed. The experimental results show that the ultimate and residual bond strengths decrease, but the slip at the peak bond stress first increases and then keeps constant with the increase of the lateral tension.