Bond between Ultra-High Performance Concrete and Steel Bars

  • Mo Alkaysi (University of Michigan)
  • Sherif El-Tawil (University of Michigan)


As continued research on Ultra High Performance Concrete (UHPC) becomes more readily available, researchers are becoming increasingly interested in developing new structural applications for the material. UHPC performance under tension and compression are well understood, however studies on the interaction between UHPC and Steel Bar reinforcement remains limited and data for non-proprietary UHPCs are sparse. The current work attempts to clarify this. A series of bar pull out tests were conducted using plain and epoxy-coated grade 60 bars with nominal diameters of 13 mm, 16 mm, and 19 mm. Other experimental parameters include three development lengths (50 mm, 75 mm and 100 mm). Testing shows that bond stress achieved increases at low embedded lengths and that 1% fiber volume content in UHPC vs. 2% fiber volume content leads to a reduction of approximately 24% in bond strength.

How to Cite:

Alkaysi, M. & El-Tawil, S., (2016) “Bond between Ultra-High Performance Concrete and Steel Bars”, International Interactive Symposium on Ultra-High Performance Concrete 1(1). doi:

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Published on
18 Jul 2016