THE ANALYSIS OF FLEXURAL BEHAVIOR OF CORRODED RC BEAMS STRENGTHENED WITH CFRP UNDER FATIGUE LOADS

Ge Ruodong; Liang Jinxiu; Wang Lei

doi:10.13204/j.gyjz201206016

Volume 42 Issue 6

Dec. 2014

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Ge Ruodong, Liang Jinxiu, Wang Lei. THE ANALYSIS OF FLEXURAL BEHAVIOR OF CORRODED RC BEAMS STRENGTHENED WITH CFRP UNDER FATIGUE LOADS[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(6): 72-76. doi: 10.13204/j.gyjz201206016

Citation:

Ge Ruodong, Liang Jinxiu, Wang Lei. THE ANALYSIS OF FLEXURAL BEHAVIOR OF CORRODED RC BEAMS STRENGTHENED WITH CFRP UNDER FATIGUE LOADS[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(6): 72-76. doi: 10.13204/j.gyjz201206016

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THE ANALYSIS OF FLEXURAL BEHAVIOR OF CORRODED RC BEAMS STRENGTHENED WITH CFRP UNDER FATIGUE LOADS

doi: 10.13204/j.gyjz201206016

1.
1. College of Civil Engineering &Architecture,Guangxi University,Nanning 530004,China;
2.
2. Department of Civil Engineering,Guilin University of Technology,Guilin 541004,China

Received Date: 2011-11-11
Publish Date: 2012-06-20

Abstract

Abstract

Eight RC beams including four CFRP strengthened beams were tested after short-term fatigue. Thedistortion, stress distribution, ultimate load of corroded reinforced concrete beams were investigated. Both theexperimental and analytical results indicated that fatigue loading had a significant impact on the performance ofcorroded RC beams; It could reduce the ultimate strength and ductility of the beams substantially. The ultimate loadcarrying capacity of the CFRP-strengthened corroded beams are enhanced evidently and had a preferable ductilityduring damage. The loading capacity of RC beams with CFRP strengthened was in creased by 22% to 47 %. The Uwrap CFRP sheet had an obvious effect on beams, the potential delamination of the concrete cover following steelcorrosion could cause sudden failure of RC beams strengthened with CFRP at later loading stages. Repairing a lowcorrosion rate beams by CFRP still had good mechanical properties after a short-term fatigue loadings.
- carbon fiber,
- fatigue load,
- reinforced concrete beam,
- corrosion

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References(11)

References

Goitseone Malumbela,Pilate Moyo,Mark Alexander.Behaviour ofRC Beams Corroded Under Sustained Service Loads[J].Construction and Building Materials,2009,23:3346-3351.

[2] 宋力,曲福来,赵顺波.锈蚀钢筋与混凝土黏结性能试验研究[J].混凝土,2010(4):74-76.

[3] Sherwood E G,Soudki K A.Rehabilitation of Corrosion DamagedConcrete Beams with CFRP Laminates:A Pilot Study[J].Composites:Part B,2000(31):453-459.

[4] Angst U,Elsener B,Larsen C K,et al.Critical Chloride Contentin Reinforced Concrete-A:Review[J].Cem Concr Res,2009,39(12):1122-1138.

[5] Bertolini L,Carsana M,Redaelli E.Conservation of HistoricalReinforced Concrete Structures Damaged by Carbonation InducedCorrosion by Means of Electrochemical Re-alkalization[J].J CultHerit,2008,9(4):376-385.

[6] 易伟建,孙晓东.锈蚀钢筋混凝土梁疲劳性能试验研究[J].土木工程学报,2007,40(3):6-10.

[7] Huet B,L'hostis V,Santarini G,et al.Steel Corrosion inConcrete Determinist Modeling of Cathodic Reaction as a Functionof Water Saturation Degree[J].Corros Sci,2007,49(4):1918-1932.

[8] Yeong-soo S,Chadon L.Flexural Behavior of Reinforced ConcreteBeams Strengthened with Carbon Fiber-reinforced PolymerLaminates at Different Levels of Sustaining Load[J].ACIStructural Journal,2003,100(2):231-240.

[9] 梁进修.碳纤维加固锈蚀钢筋混凝土梁的疲劳抗弯性能研究[D].桂林:桂林理工大学,2010.

[10] 陈留国,方从启,寇新建,等.受腐蚀钢筋混凝土的粘结性能[J].工业建筑,2004,34(5):15-17.

[11] 范进,董福兴.疲劳荷载下钢筋锈蚀混凝土构件粘结性能试验研究[J].南京理工大学学报:自然科学版,2009(12):734-737.

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