Experimental and analytical investigation into the flexural performance of RC beams with partially and fully bonded NSM FRP bars/strips
Source abstract
Abstract
Thirteen reinforced concrete (RC) beams strengthened with partially and fully bonded near surface mounted (NSM) reinforcement and one unstrengthened beam (CB) were prepared and tested in order to study the effect of bond length, construction details and fiber reinforced polymer (FRP) characteristics on flexural performance. Carbon fiber reinforced polymer (CFRP) bars and strips and glass fiber reinforced polymer (GFRP) bars were used as the NSM reinforcement. Two bonded lengths (384. mm and 480. mm in each shear span) were studied for beams strengthened with partially bonded NSM reinforcement, while the bond length was 2000. mm in beams strengthened with fully bonded NSM reinforcement. The effect of transverse wrapping and end anchorage on the behavior and load capacity of strengthened beams was also studied. The results showed that the RC beam strengthened with fully bonded NSM FRP had greater stiffness and bearing capacity than the beams with partially bonded NSM FRP. The use of NSM FRP with end anchorage or with transverse wrapping for the strengthening of RC beams increased their load carrying capacity and stiffness. The analytical model predicted well the response of the tested beams
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Concrete Corrosion and Durability · Structural Response to Dynamic Loads
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (45)
Show source-provided references
1. Near-surface mounted FRP reinforcement: an emerging technique for strengthening structures10.1016/j.compositesb.2006.08.003 ↗
2. A modified pull-out test for bond of near-surface mounted FRP rods in concrete10.1016/S1359-8368(02)00052-5 ↗
3. Bond performance of near-surface mounted FRP bars10.1061/(ASCE)CC.1943-5614.0000150 ↗
4. Effect of different material and construction details on the bond behaviour of NSM FRP bars in concrete10.1016/j.conbuildmat.2012.09.015 ↗
5. Effect of construction details on the bond performance of NSM FRP bars in concrete10.1260/136943309789867836 ↗
6. An experimental study of different factors affecting the bond of NSM FRP bars in concrete10.1016/j.compstruct.2012.12.014 ↗
7. Near surface-mounted fiber-reinforced polymer reinforcements for flexural strengthening of concrete structures
8. Flexural behavior of concrete beams strengthened with near surface mounted CFRP strips
9. Anchorage length of near-surface mounted fiber-reinforced polymer bars for concrete strengthening-experimental investigation and numerical modeling
10. Bond between near-surface mounted carbon-fiber reinforced polymer laminate strips and concrete10.1061/(ASCE)1090-0268(2004)8:6(519) ↗
11. Bond efficiency of EBR and NSM FRP systems for strengthening concrete members10.1061/(ASCE)CC.1943-5614.0000204 ↗
12. Modeling of bond between near-surface mounted CFRP laminate strips and concrete10.1016/j.compstruc.2004.03.047 ↗
13. Experimental study of bond of NSM FRP reinforcement10.1016/j.conbuildmat.2006.05.054 ↗
14. Bond strength of near surface mounted FRP-to-concrete joints10.1061/(ASCE)1090-0268(2007)11:4(401) ↗
15. Shear strengthening of reinforced concrete beams with near-surface mounted fiber reinforced polymer rods
16. Debonding failures of RC beams strengthened with near-surface mounted CFRP strips10.1061/(ASCE)1090-0268(2006)10:2(92) ↗
17. Assessing the effectiveness of embedding CFRP laminates in the near surface for structural strengthening10.1016/j.conbuildmat.2005.01.030 ↗
18. Bond between near-surface mounted carbon-fiber reinforced polymers laminate strips and concrete10.1061/(ASCE)1090-0268(2004)8:6(519) ↗
19. Investigation of bond in concrete structures strengthened with near surface mounted carbon fiber reinforced polymer strips10.1061/(ASCE)1090-0268(2003)7:3(248) ↗
20. Performance of reinforced concrete T beams strengthened in shear with NSM CFRP laminates10.1016/j.engstruct.2009.10.001 ↗
21. Strengthening of RC members with near-surface mounted CFRP rods10.1016/j.compstruct.2009.04.040 ↗
22. Bond mechanism of near-surface-mounted fiber-reinforced polymer bars for flexural strengthening of concrete structures
23. Flexural behaviour of concrete beams strengthened with near surface mounted fibre reinforced polymer bars10.1139/L10-077 ↗
24. Embedding NSM FRP plates for improved IC debonding resistance10.1061/(ASCE)1090-0268(2008)12:6(635) ↗
25. Behavior of beams strengthened with novel self-anchored near surface mounted CFRP bars10.1061/(ASCE)CC.1943-5614.0000183 ↗
26. Z.Y. Sun, G. Wu, Z.S. Wu and Y.B. Luo. Flexural strengthening of concrete beams with near-surface mounted steel– fiber-reinforced polymer composite bars. Journal of Reinforced Plastics and Composites 30(18) 1529–1537.10.1177/0731684411427209 ↗
27. Experimental study of influence of bond on flexural behavior of concrete beams pretensioned with aramid fiber reinforced plastics
28. Analysis of concrete beams with partially bonded composite reinforcement
29. Partially bonded near-surface mounted CFRP bars for strengthened concrete T-beams10.1016/j.conbuildmat.2010.11.056 ↗
30. Flexural response of reinforced concrete beams strengthened with end-anchored partially bonded carbon fiber-reinforced polymer strips10.1061/(ASCE)1090-0268(2005)9:2(170) ↗
31. ACI 440.2R-08. Guide test methods for fiber-reinforced polymer (FRPs) composites for reinforcing or strengthening concrete structures. American Concrete Institute, 2012. p. 23.
32. Flexure strengthening of reinforced concrete beams using external unbonded steel bars
33. Sallam HEM, Sherbini AS, Bonduk H, Assessment of strengthened RC beam by external unbonded bars. In: Int. conf. bridge management systems-monitoring, assessment and rehabilitation, 21–23 March, HBRC, Giza, 2006.
34. Theoretical model for ultimate moment capacity of RC beams strengthened by unbonded reinforcement10.1007/s13369-012-0294-2 ↗
35. Rafeeqi SFA. Flexural behaviour of reinforced concrete beams strengthened by external unbounded reinforcement [Ph.D. thesis]. Scotland, Edinburgh, UK: Heriot-Watt University; 2000. p. 371.
36. Flexural behavior of strengthened steel-concrete composite beams by various plating methods10.1016/j.jcsr.2010.03.005 ↗
37. Discussion of “Flexural strengthening of steel bridges with high modulus CFRP strips” by David Schnerch and Sami Rizkalla10.1061/(ASCE)BE.1943-5592.72 ↗
38. Ductile strengthening using externally bonded and near surface mounted composite systems10.1016/j.compstruct.2010.03.009 ↗
39. Park · 1975
40. Strengthening of reinforced concrete beams with externally bonded composite laminates
41. RC beams strengthened with FRP plates. II: analysis and parametric study10.1061/(ASCE)0733-9445(1991)117:11(3434) ↗
42. A fracture-based model for FRP debonding in strengthened beams10.1016/j.engfracmech.2009.04.011 ↗
43. FRP-strengthened RC beams. I: Review of debonding strength models10.1016/S0141-0296(01)00105-5 ↗
44. Premature failure of externally plated reinforced concrete beams10.1061/(ASCE)0733-9445(1990)116:4(978) ↗
45. Reinforced concrete beams with plates glued to their soffits10.1061/(ASCE)0733-9445(1992)118:8(2023) ↗