1990 Volume 1 Issue 1 Pages 51-59
Experimental studies were carried out to clarify the mechanism of the flexural behavior of reinforced concrete beams with low reinforcement. Experimental results showed that the strain of tensile reinforcement at the crack portion reached the strain hardening point immediately while the reinforcement at the other portion was under the yielding stress. The load-deflection curves were shown to fluctuate after the yielding of the beam due to the local strain hardening and the bond failure near the crack portion. An analytical model to evaluate these phenomena was obtained.
