Experimental analysis on flexural behaviour of RC beams strengthened with CFRP laminates and under fire conditions

2018 ◽  
Vol 189 ◽  
pp. 516-528 ◽  
Author(s):  
Thiago B. Carlos ◽  
João Paulo C. Rodrigues ◽  
Rogério C.A. de Lima ◽  
Dhionis Dhima
Keyword(s):  
Experimental Analysis ◽  
Rc Beams ◽  
Flexural Behaviour ◽  
Cfrp Laminates ◽  
Fire Conditions

scholarly journals Flexural Performance of RC Beams Strengthened with Externally-Side Bonded Reinforcement (E-SBR) Technique Using CFRP Composites

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2809
Author(s):  
Md. Akter Hosen ◽  
Fadi Althoey ◽  
Mohd Zamin Jumaat ◽  
U. Johnson Alengaram ◽  
N. H. Ramli Sulong
Keyword(s):  
Absorption Capacity ◽  
Experimental Program ◽  
Rc Beams ◽  
Rc Structures ◽  
Functional Changes ◽  
Flexural Strengthening ◽  
Cfrp Laminates ◽  
Flexural Performance ◽  
Design Loads ◽  
Predicted Values

Reinforced concrete (RC) structures necessitate strengthening for various reasons. These include ageing, deterioration of materials due to environmental effects, trivial initial design and construction, deficiency of maintenance, the advancement of design loads, and functional changes. RC structures strengthening with the carbon fiber reinforced polymer (CFRP) has been used extensively during the last few decades due to their advantages over steel reinforcement. This paper introduces an experimental approach for flexural strengthening of RC beams with Externally-Side Bonded Reinforcement (E-SBR) using CFRP fabrics. The experimental program comprises eight full-scale RC beams tested under a four-point flexural test up to failure. The parameters investigated include the main tensile steel reinforcing ratio and the width of CFRP fabrics. The experimental outcomes show that an increase in the tensile reinforcement ratio and width of the CFRP laminates enhanced the first cracking and ultimate load-bearing capacities of the strengthened beams up to 141 and 174%, respectively, compared to the control beam. The strengthened RC beams exhibited superior energy absorption capacity, stiffness, and ductile response. The comparison of the experimental and predicted values shows that these two are in good agreement.

scholarly journals Experimental Study of Aged and Seriously Damaged RC Beams Strengthened Using CFRP Composites

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Ning Zhuang ◽  
Honghan Dong ◽  
Da Chen ◽  
Yeming Ma
Keyword(s):  
Mechanical Properties ◽  
Fiber Reinforced Polymer ◽  
Carbon Fiber Reinforced Polymer ◽  
Rc Beams ◽  
Yield Load ◽  
Cfrp Laminates ◽  
Load Growth ◽  
Reinforced Polymer ◽  
Bonding Length ◽  
Damaged Beams

This paper presents results from experiments on aged and seriously damaged reinforced concrete (RC) beams strengthened with different arrangements of external carbon fiber-reinforced polymer (CFRP) laminates and end anchorages. Seven RC beams from an old bridge, measuring 250 × 200 × 2300 mm, were tested. All specimens were loaded to yield load to evaluate initial mechanical properties. Then, these seriously damaged specimens were repaired using different CFRP-reinforcing schemes and reloaded to failure. The yield load growth due to CFRP reinforcement ranged from 5% to 36%. Different parameters including CFRP dimension and position, bonding length, and end anchorage were investigated and facilitated conclusions on beam ductility, load-midspan deflection response, and failure mode. This research contributes to knowledge about the CFRP repair of aged and seriously damaged beams to ensure better performance in overloaded conditions.

Study on flexural behaviour of glulam beams reinforced by Near Surface Mounted (NSM) CFRP laminates

2015 ◽  
Vol 91 ◽  
pp. 23-31 ◽  
Author(s):  
Weidong Lu ◽  
Zhibin Ling ◽  
Qifan Geng ◽  
Weiqing Liu ◽  
Huifeng Yang ◽  
...  
Keyword(s):  
Flexural Behaviour ◽  
Near Surface ◽  
Cfrp Laminates ◽  
Near Surface Mounted

Effects of Fibres on the Flexural Behaviour of Sound and Damaged RC Beams

2020 ◽  
pp. 423-432
Author(s):  
Raúl L. Zerbino ◽  
María C. Torrijos ◽  
Graciela M. Giaccio ◽  
Antonio Conforti
Keyword(s):  
Rc Beams ◽  
Flexural Behaviour

scholarly journals Behavior of RC beams flexurally strengthened with NSM CFRP laminates

2018 ◽  
Vol 201 ◽  
pp. 363-376 ◽  
Author(s):  
S.J.E. Dias ◽  
J.A.O. Barros ◽  
W. Janwaen
Keyword(s):  
Rc Beams ◽  
Cfrp Laminates
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