A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Hybrid Composite System for Strengthening Concrete Columns
Strengthening existing concrete columns using fiber-reinforced polymers (FRP) in the form of longitudinal near-surface-mounted (NSM) bars has not gained that much attention due to the possibility of premature crushing and/or buckling of NSM bars. This paper investigates a hybrid system using both NSM and wrapping methods to prevent the premature failure and extend the contribution of NSM bars due to extended strain of confined concrete. A total of 21 plain concrete cylinders (150 mm x 300 mm) were prepared, strengthened, and tested to characterize the performance of the hybrid system. Multiple glass FRP (GFRP) bars (#4) were mounted in 20 mm by 20 mm surface grooves, and unidirectional basalt FRP (BFRP) was used to wrap the specimens. The specimens were instrumented with multiple strain and displacement gauges and loaded under uniaxial compression. It was shown that the wrapping system effectively prevented the premature failure and extended the contribution of NSM bars, significantly.
A Hybrid Composite System for Strengthening Concrete Columns
Strengthening existing concrete columns using fiber-reinforced polymers (FRP) in the form of longitudinal near-surface-mounted (NSM) bars has not gained that much attention due to the possibility of premature crushing and/or buckling of NSM bars. This paper investigates a hybrid system using both NSM and wrapping methods to prevent the premature failure and extend the contribution of NSM bars due to extended strain of confined concrete. A total of 21 plain concrete cylinders (150 mm x 300 mm) were prepared, strengthened, and tested to characterize the performance of the hybrid system. Multiple glass FRP (GFRP) bars (#4) were mounted in 20 mm by 20 mm surface grooves, and unidirectional basalt FRP (BFRP) was used to wrap the specimens. The specimens were instrumented with multiple strain and displacement gauges and loaded under uniaxial compression. It was shown that the wrapping system effectively prevented the premature failure and extended the contribution of NSM bars, significantly.
A Hybrid Composite System for Strengthening Concrete Columns
Sadeghian, Pedram (author) / Fillmore, Brandon (author)
Structures Congress 2018 ; 2018 ; Fort Worth, Texas
Structures Congress 2018 ; 81-89
2018-04-17
Conference paper
Electronic Resource
English
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