Bond of High Strength Concrete with High Strength Reinforcing Steel

Muhammad N.S. Hadi*
Faculty of Engineering, University of Wollongong, Wollongong 2522, Australia.

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© 2008 Muhammad N.S. Hadi.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Faculty of Engineering, University of Wollongong, Wollongong 2522, Australia; Tel: +61242214762; Fax: +61242213238; E-mail:


This paper presents a study about the bond of high strength concrete with high strength steel. Fourteen pull out tests were carried out to determine the bond. The concrete strength was about 70 MPa and the steel was a 500 MPa grade. Bar diameters used were 12, 16, 20, 25, 28, 32 and 36 mm. In order to investigate the effect of cover, each test was done twice, once in a 240 mm diameter concrete cylinder and the second in a 300 mm diameter cylinder. Based on the test results a new equation representing the bond is proposed.

Keywords: Reinforced concrete, Bond, High strength concrete, High strength steel.