Influence of Reinforcing Bar Type on Autogenous Shrinkage Stress and Bond Behavior of Ultra High Performance Fiber Reinforced Concrete

Title
Influence of Reinforcing Bar Type on Autogenous Shrinkage Stress and Bond Behavior of Ultra High Performance Fiber Reinforced Concrete
Author
류두열
Keywords
Ultra high performance fiber reinforced concrete; Reinforcing bars; Autogenous shrinkage stress; Degree of restraint; Cracking potential; Bond performance
Issue Date
2014-04
Publisher
Elsevier B.V
Citation
Cement and Concrete Composites, April 2014, 48, 150-161
Abstract
This study investigated the effects of reinforcing bar type and reinforcement ratio on the restrained shrinkage behaviors of ultra high performance fiber reinforced concrete (UHPFRC), including autogenous shrinkage stress, degree of restraint, and cracking potential. In addition, the influence of the type and embedment length of reinforcing bars on the bond behavior of UHPFRC was evaluated by performing pullout test. Three different reinforcing bars (deformed steel bar, round steel bar, and GFRP bar) were investigated in the restrained shrinkage and pullout tests. The GFRP bar exhibited the best performance in relation to the autogenous shrinkage stress, degree of restraint, and cracking potential because of its low stiffness. The highest bond strength was obtained for the deformed steel bar, and the bar yielding was observed when the bar embedment length of lb=2db was used. The round steel bar exhibited the poorest behaviors for both of the restrained shrinkage and pullout.
URI
https://www.sciencedirect.com/science/article/pii/S0958946513001996http://hdl.handle.net/20.500.11754/50998
ISSN
0958-9465
DOI
10.1016/j.cemconcomp.2013.11.014
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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