The effect of bond length on the flexural behavior of RC beam strengthened with NSM CFRP Bar

Author

Wang Shi-Ping ; Hou Shu-Liang ; Wang Bo

Author_Institution

Sch. of Civil Eng., Jilin Archit. & Civil Eng. Inst., Changchun, China

fYear

2011

fDate

22-24 April 2011

Firstpage

6278

Lastpage

6281

Abstract

Near Surface Mounted (NSM) reinforcement is becoming a viable material for strengthening existing concrete structures in flexure. This paper presents the test results of 4 concrete beams strengthened with different bond length NSM bar. The ultimate load bearing capacity increases 15.17%, 26.74%, 65.42% according to the bond length compared to the control beam. The stiffness and crack restrict can improve with the bond length. The failure mode is the concrete cover debonding where as the resin, CFRP bar and the compressive concrete remain intact.

Keywords

bars; beams (structures); bending strength; carbon fibre reinforced plastics; compressive strength; cracks; elasticity; failure (mechanical); reinforced concrete; NSM CFRP bar; RC beam; bond length; compressive concrete; concrete beams; crack; debonding; failure mode; flexural behavior; flexure; near surface mounted reinforcement; stiffness; strengthening; ultimate load bearing capacity; Civil engineering; Concrete; Educational institutions; Helium; Monitoring; Polymers; Structural beams; CFRP bar; NSM; bond length; flexural behavior;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Technology and Civil Engineering (ICETCE), 2011 International Conference on

Conference_Location

Lushan

Print_ISBN

978-1-4577-0289-1

Type

conf

DOI

10.1109/ICETCE.2011.5775833

Filename

5775833