Influence of CFRP confinement on bond behavior of steel deformed bar embedded in concrete exposed to high temperature

Structures ◽  
2020 ◽  
Vol 24 ◽  
pp. 240-252 ◽  
Author(s):  
Habib Akbarzadeh Bengar ◽  
Mehdi Hosseinpour ◽  
Murude Celikag
Keyword(s):  
High Temperature ◽  
Bond Behavior ◽  
Deformed Bar ◽  
Cfrp Confinement

Study on the Effect of Bond-Anchoring Factor on Bond Behavior between Deformed Bar and Shale Ceramic Concrete

2011 ◽  
Vol 403-408 ◽  
pp. 444-448
Author(s):  
Wei Jun Yang ◽  
Jie Yu ◽  
Yan Wang
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Anchorage Length ◽  
Bond Behavior ◽  
Pull Out ◽  
Practical Project ◽  
Deformed Bar

In this paper, the effect of bond-anchoring factor on bond behavior between deformed bar and shale ceramic concrete was analyzed by four groups of pull-out tests with different anchorage length. And three reinforced concrete pull-out tests used for comparative analysis were prepared at the same time. We obtained a series of experimental data and based on these data .A more accurate formula was summed up. This formula has a high value in guiding the practical project to choose the anchorage length.

scholarly journals Bond Behavior between BFRP Bars and Hybrid Fiber Recycled Aggregate Concrete after High Temperature

2021 ◽  
Vol 9 (3) ◽  
pp. 507-521
Author(s):  
Boheng Zhu ◽  
Huaxin Liu ◽  
Genjin Liu ◽  
Abasal Hussain ◽  
Xiaofei Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Hybrid Fiber ◽  
Aggregate Concrete ◽  
Bond Behavior

Study on the Effect of Cover Thickness on Bond Behavior between Deformed Bar and Shale Ceramsite Concrete

2011 ◽  
Vol 366 ◽  
pp. 281-285 ◽  
Author(s):  
Jian Yu Yang ◽  
Jie Yu ◽  
Yan Wang
Keyword(s):  
Experimental Data ◽  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Bond Behavior ◽  
Pull Out ◽  
Practical Project ◽  
Cover Thickness ◽  
Deformed Bar

In this paper, the effect of cover thickness on bond behavior between deformed bar and shale ceramsite concrete was analyzed by four groups of pull-out tests which with different cover thickness. And three reinforced concrete pull-out tests used for comparative analysis were prepared at the same time. We obtained a series of experimental data and based on these data a more accurate formula was summed up. This formula has a high value in guiding the practical project to choose the cover thickness.

Numerical Simulation of Bond Behavior for Adhesive Anchor in Steel-to-Concrete Connection Exposed to Fire

2013 ◽  
Vol 351-352 ◽  
pp. 860-864
Author(s):  
Qun Xie ◽  
Chong Ji Zhu ◽  
Hao Xue Ju
Keyword(s):  
Numerical Simulation ◽  
Tensile Strength ◽  
High Temperature ◽  
Elevated Temperature ◽  
Bond Strength ◽  
Fe Model ◽  
Bond Behavior ◽  
Anchor Length ◽  
Tensile Performance ◽  
Negative Effect

Adhesive anchor is an effective tool for a steel-to-concrete connection combined with the way of post-installed anchorage. However the bond strength of adhesive will decrease at elevated temperature which has a negative effect on anchorage behavior. In this paper a numerical analysis with 3D FE model has been carried out to investigate the tensile performance of adhesive anchor in a steel-to-concrete connection subjected to fire and the results show that high temperature have significant impact on bond strength of anchor even with the protection of fire resisting coating covering the surface of concrete base and the bond stress does not distribute along anchor length during the process of heating. The tensile strength of adhesive anchor presents a great reduction at elevated temperature compared with the strength in normal temperature.

Research on Bond Behavior of Corroded Reinforcing Bar in Concrete Wrapped with Carbon Fiber Reinforced Polymer Sheets

2013 ◽  
Vol 357-360 ◽  
pp. 1348-1352
Author(s):  
Jian Hui Li ◽  
Chun Xia Miao
Keyword(s):  
Bond Strength ◽  
Fiber Reinforced Polymers ◽  
Fiber Reinforced ◽  
Reinforced Polymers ◽  
Bond Behavior ◽  
Reinforcing Bar ◽  
Slowing Down ◽  
Frp Confinement ◽  
Cfrp Confinement ◽  
Ultimate Bond Strength

Right evaluation of the bond behavior between corroded reinforcing bar and concrete wrapped with fiber reinforced polymers (FRPs) is a chief problem to confirm the effect of FRP confinement. the pullout tests on 96 test specimens were conducted to study the effect of Carbon FRP (CFRP) confinement on the bond behavior between corroded reinforcing bar and concrete, test variables included reinforcing bar types, concrete covers, degrees of corrosion and CFRP confinements. The test results show that CFRP confinements can make the failure mode of deformed reinforcing bar specimens change from concrete splitting to bar pullout. When the degree of corrosion is less than 5%, the ultimate bond strength of corroded specimens increases by 5%~7%; and the CFRP confinement has less contribution on the ultimate bond strength, but it is effective on slowing down the bond stress descending speed and maintaining the bond strength. When the degree of corrosion is higher than 5%, the ultimate bond strength of corroded specimens drops gradually with the increase of degree of corrosion.

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