Combined effects of wetting–drying cycles and sustained load on the behaviour of FRP-strengthened RC beams

2020 ◽  
Vol 213 ◽  
pp. 110570 ◽  
Author(s):  
Wenshui Tang ◽  
Shan Li ◽  
Yiyan Lu ◽  
Zhen Li
Keyword(s):  
Sustained Load ◽  
Combined Effects ◽  
Rc Beams

scholarly journals An Effect of Concrete Surface Coating on Internal Stress of ASR-affected RC Beams and RC Columns under Sustained Load

1995 ◽  
Vol 6 (2) ◽  
pp. 9-20
Author(s):  
Hidenori Hamada ◽  
R.N. Swamy ◽  
Shin Tanikawa ◽  
Jaw-Chang Laiw
Keyword(s):  
Internal Stress ◽  
Surface Coating ◽  
Concrete Surface ◽  
Sustained Load ◽  
Rc Beams ◽  
Rc Columns

Influence of Longitudinal Reinforcement Ratio on Shear Strength of RC Slender Beam Under Different Loading Rates

2020 ◽  
Vol 897 ◽  
pp. 91-97
Author(s):  
Halwan Alfisa Saifullah ◽  
Kenichiro Nakarai ◽  
Nobuhiro Chijiwa ◽  
Koichi Maekawa ◽  
Stefanus Kristiawan
Keyword(s):  
Shear Strength ◽  
Loading Rate ◽  
Concrete Structures ◽  
Shear Resistance ◽  
Reinforcement Ratio ◽  
Sustained Load ◽  
Longitudinal Reinforcement ◽  
Rc Beams ◽  
Shear Cracks ◽  
Loading Rates

. A primary current focus in concrete shear design is how to ensure the shear resistance of the concrete structures to withstand the possible adverse creep effects during the service life. All shear-carrying actions are supposed to depreciate due to the enhanced critical shear cracks under sustained loads. However, only a few studies that evaluated the performance of concrete structures failing in shear due to long-term loading. As the longitudinal tensile reinforcement strain influences the shear strength of RC beam, the shear resistance of the beam under sustained load may also be affected by the amount of longitudinal reinforcement. The present study aims at investigating the influence of flexural reinforcement ratio on the shear creep failures of reinforced concrete (RC) beams without stirrups by non-linear finite element analysis. In this study, the numerical model of RC beams with reinforcement ratios varying from 0.4% to 3.2% was evaluated under different loading rates. A loading rate of 1000 and 10000 times slower than the static loading rate were adopted to reveal the creep effects of RC beams.

Strengthening Schemes for Flexure and Torsion Using FRP Laminates: A State of Art Review

2014 ◽  
Vol 567 ◽  
pp. 511-516
Author(s):  
Muhammad Imran ◽  
Nasir Shafiq ◽  
Ibrisam Akbar
Keyword(s):  
Experimental Studies ◽  
Testing Procedure ◽  
Structural Member ◽  
Experimental Setup ◽  
Combined Effects ◽  
Rc Beams ◽  
Flexural Strengthening ◽  
State Of Art

RC beams as a structural member contain a variety of non-uniform loads. These non-uniform loads caused combined effects of flexure and torsion. There are numerous studies available, that suggests different strengthening schemes using FRP laminates, as a solution for flexure and torsion deficient beams. Most of the experimental studies suggested individual strengthening schemes for flexure or torsional deficiency RC beams. However, the combined effects were not studied due to difference in experimental setup, testing procedure and specimen detailing. Therefore, the outcome of previous studies was needed to combine together to facilitate the strengthening process as a guideline case of such deficiency. Therefore, a combined review is presented by suggesting different configuration for flexure and torsion deficient RC beams. Most of the studies suggested that the application of FRP laminates at the soffit of beam is suitable for flexural strengthening. The application of U-shape or full wrap are suitable for strengthen torsion deficient beams. Similarly, 45° wraps are more effective than 90°wraps for improving ductility of torsion deficient beams.

The combined effects of wet-dry cycles and sustained load on the bond behavior of FRP-concrete interface

2018 ◽  
Vol 40 (3) ◽  
pp. 1006-1017 ◽  
Author(s):  
Hongjun Liang ◽  
Shan Li ◽  
Yiyan Lu ◽  
Ting Yang
Keyword(s):  
Sustained Load ◽  
Combined Effects ◽  
Bond Behavior ◽  
Concrete Interface
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