Comparison of Bond-Slip Behaviour Between Three Different Concrete Grades and Deformed Steel Bars

To investigate the bond-slip behaviour between three different concrete strengths and deformed steel bars for structural design improvement. Cubic and cylinder specimens were cast from the produced concretes. Deformed steel bars of 16 mm and 20 mm diameter were embedded constantly (65 mm) into pullout specimens. The pullout loads, compressive strength, splitting tensile strength and modulus elasticity of the specimens were attained from various testing methods. The mechanical properties of the surrounding concrete had significant effects the bond stress when interact with the deformed steel bar. Bond stress data between concrete with different grades and deformed steel bar are compared with data from other researchers. The finding test results could benefit to the development of design procedures of concrete structural.