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Computers and Concrete
  Volume 18, Number 1, July 2016 , pages 139-154
DOI: https://doi.org/10.12989/cac.2016.18.1.139
 


Post-cracking behavior of UHPC on the concrete members reinforced by steel rebar
H.A. Rahdar and M. Ghalehnovi

 
Abstract
    Since the concrete strength around the reinforcement rebar affects the tension stiffening, the tension stiffening effect of ultra high performance concrete on the concrete members reinforced by steel rebar is examined by testing the specimens with circular cross section with the length 850 mm reinforced by a steel rebar at the center of a specimen\'s cross section in this research. Conducting a tensile test on the specimens, the cracking behavior is evaluated and a curve with an exponential descending branch is obtained to explain the post-cracking zone. In addition, this paper proposes an equation for this branch and parameters of equation is obtained based on the ratio of cover thickness to rebar diameter (c/d) and reinforcement percentage (
 
Key Words
    Ultra High Performance Concrete (UHPC); reinforcement; tension stiffening; reinforced concrete member; crack
 
Address
H.A. Rahdar and M. Ghalehnovi: Civil Engineering Department, Faculty of Engineering, Ferdowsi University Of Mashhad, Mashhad, Iran
 

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