Login for students

Login for employees

Publication detail

Post-damage recovery of substandard RC columns by CFRPs
Authors: Yurdakul Özgür | Vnenk Petr | Řoutil Ladislav | Culek Bohumil | Avsar Ozgur
Year: 2024
Type of publication: článek v odborném periodiku
Name of source: Engineering Structures
Publisher name: Elsevier Science
Place: Oxford
Page from-to: 1-21
Titles:
Language Name Abstract Keywords
cze Post-damage recovery of substandard RC columns by CFRPs Cyclic response of substandard reinforced concrete (RC) columns and structural repair of pre -damaged columns by carbon -fiber -reinforced polymers (CFRPs) were investigated through combination of experimental and advanced numerical modeling methods. The specimens, representing typical RC columns in substandard buildings, were constructed from low -strength concrete, plain round bars, and nonconforming reinforcement details. The key parameters under investigation included the lap -splice, hook detail in the longitudinal reinforcement, and axial load ratio. First, the RC columns were subjected to cyclic loading until the attainment of their heavy damage state. The failure mode was dominated by the flexural response alongside significant reinforcement slip and axial damage, involving concrete crushing and reinforcement buckling. Subsequently, the severe cracks and concrete damage were repaired by the externally wrapped CFRP sheets. The former loadcarrying capacities of the repaired RC columns were recovered. The damage formation in the concrete and reinforcement was transferred to CFRP sheets. The final failure mode was characterized by local deformations in the CFRP, with minimal damage observed in the concrete and reinforcement bars. Furthermore, the numerical solution effectively reproduced the nonlinear behavior of the as -built specimens. The crack patterns and capacities observed in the numerical solutions align with the responses observed in the experimental tests. Substandard; Low-strength concrete; Plain round bar; Column; Repair; Bond-Slip
eng Post-damage recovery of substandard RC columns by CFRPs Cyclic response of substandard reinforced concrete (RC) columns and structural repair of pre -damaged columns by carbon -fiber -reinforced polymers (CFRPs) were investigated through combination of experimental and advanced numerical modeling methods. The specimens, representing typical RC columns in substandard buildings, were constructed from low -strength concrete, plain round bars, and nonconforming reinforcement details. The key parameters under investigation included the lap -splice, hook detail in the longitudinal reinforcement, and axial load ratio. First, the RC columns were subjected to cyclic loading until the attainment of their heavy damage state. The failure mode was dominated by the flexural response alongside significant reinforcement slip and axial damage, involving concrete crushing and reinforcement buckling. Subsequently, the severe cracks and concrete damage were repaired by the externally wrapped CFRP sheets. The former loadcarrying capacities of the repaired RC columns were recovered. The damage formation in the concrete and reinforcement was transferred to CFRP sheets. The final failure mode was characterized by local deformations in the CFRP, with minimal damage observed in the concrete and reinforcement bars. Furthermore, the numerical solution effectively reproduced the nonlinear behavior of the as -built specimens. The crack patterns and capacities observed in the numerical solutions align with the responses observed in the experimental tests. Substandard; Low-strength concrete; Plain round bar; Column; Repair; Bond-Slip

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement