Abstract
The paper discusses the bond strength between a high-performance concrete (HPC having a 28-day strength of 95 MPa) and reinforcing bars. This was measured in a series of beam tests in which the concrete type (HPC and ordinary concrete), reinforcement diameter (between 10 and 25 mm), and reinforcement surface condition (smooth and deformed bars) were varied. In general, concrete-reinforcement bond strength increases with the tensile strength of the concrete, and at a hgher rate with smaller reinforcement (a more marked scale effect).
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