Bond performance between self-compacting recycled concrete and ribbed steel bar
YU Fang
ZHU Xianglong
YAO Dali
WANG Jianzhen
Abstract：To study the bond performance between self-compacting recycled concrete(RASCC)and ribbed steel bar,18 sets of specimens were designed,and the effects of concrete strength,steel bar diameter,bond length and protective layer thickness on bond performance were studied by central pull-out test.The results show that the bond strength between RASCC and ribbed steel bar increases exponentially with the compressive strength of concrete,increases linearly with the splitting tensile strength,increases parabolically with the diameter and bond length of steel bar,and increases first and then stabilizes with the increase of protective layer thickness.According to the experimental results,the formulas for calculating the bond strength and critical anchorage length of RASCC and ribbed steel bar were proposed,and the bond-slip constitutive model of RASCC and ribbed steel bar was established.
Keywords：self-compacting recycled concretebond strengthbond stressbond slipbond lengthprotective layer thicknesscritical anchorage lengthconstitutive model
Publication Date：2024-05-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 339-346 )