TY - JOUR
T1 - The influence of steel fibers on the bond slip behavior between rebars and concrete
T2 - Experimental and analytical investigation
AU - Monteiro, Vitor Moreira de Alencar
AU - Cardoso, Daniel Carlos Taissum
AU - Silva, Flávio de Andrade
AU - Mobasher, Barzin
N1 - Publisher Copyright:
© 2023 Elsevier Ltd
PY - 2024/1/12
Y1 - 2024/1/12
N2 - Present research brings a broad analysis on the influence of steel fibers on quasi-static and fatigue rebar pull out loading. The analysis covers the impact of fiber addition on diverse mechanical parameters, such as peak bond strength, stiffness and bond degradation under fatigue. A model previously developed for single fiber pull out in the literature was modified in order to study the bond response through analytical equations. The fiber reinforcement is responsible for providing post-crack resistance to the composite, raising the confinement around the interface and significantly increasing the peak bond strength. Moreover, by enhancing the bond strength, the addition of steel fibers could successfully increase fatigue life of cyclic pull out tests. Finally, the proposed model for rebar pull out from steel fiber reinforced concrete matrices successfully fitted the bond-slip behavior observed the experimental data. The model divided the bond-slip response in three distinct stages: elastic, nonlinear and dynamic.
AB - Present research brings a broad analysis on the influence of steel fibers on quasi-static and fatigue rebar pull out loading. The analysis covers the impact of fiber addition on diverse mechanical parameters, such as peak bond strength, stiffness and bond degradation under fatigue. A model previously developed for single fiber pull out in the literature was modified in order to study the bond response through analytical equations. The fiber reinforcement is responsible for providing post-crack resistance to the composite, raising the confinement around the interface and significantly increasing the peak bond strength. Moreover, by enhancing the bond strength, the addition of steel fibers could successfully increase fatigue life of cyclic pull out tests. Finally, the proposed model for rebar pull out from steel fiber reinforced concrete matrices successfully fitted the bond-slip behavior observed the experimental data. The model divided the bond-slip response in three distinct stages: elastic, nonlinear and dynamic.
KW - Analytical model
KW - Bond degradation
KW - Bond-slip behavior
KW - Fatigue response
KW - Pull out
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U2 - 10.1016/j.conbuildmat.2023.134357
DO - 10.1016/j.conbuildmat.2023.134357
M3 - Article
AN - SCOPUS:85183580015
SN - 0950-0618
VL - 411
JO - Construction and Building Materials
JF - Construction and Building Materials
M1 - 134357
ER -