The influence of concrete compressive strength on bonding of concrete bundled bars

• Published in: IOP conference series. Materials Science and Engineering 2021-03, Vol.1098 (2), p.22057
• Main Authors: Walujodjati, E, Tjondro, J A, Farida, I, Permana, S
• Format: Article
• Language: English
• Subjects: Bonding strength; Compressive strength; Concrete; Concrete properties; Parameters; Pull out tests; Reinforced concrete; Reinforcement; Reinforcing steels; Strain; Tensile stress; Tensile tests
• ISSN: 1757-8981; 1757-899X
• DOI: 10.1088/1757-899X/1098/2/022057

The reinforced concrete, one of the things that cause reinforcement and concrete to work together is bonding. Where the perfect attachment between the concrete and reinforcement produces a strain on the reinforcement is the same as the strain on the concrete around it. Reinforcement bundles as an alternative solution to the limitations of the cross-sectional dimensions are feasible to be developed. Experimental studies are needed to see the ability of the reinforcement bundle associated with the bonding stress produced by several parameters. Concrete strength as an important parameter in reinforced concrete is related to the use of reinforcement bundles that need to be examined. Concrete compressive strength test produces 27 MPa 36 MPa, and 39 MPa. The reinforcement steel tensile test produces 462 MPa yielding stress and 628 MPa ultimate stress. With the pull-out test of the concrete cylindrical specimen diameter of 150 mm x 200 mm produces a variety of bonding stress values. Variations in the compressive strength of concrete in the reinforcement bundle did not appear to influence the value of bonding stress significantly. Only the visible increase in bonding stress increases with the strength of the concrete and the number of bars in the bundle.