TY - JOUR
T1 - Effect of CFRP strengthening on response of RC columns to lateral static and impact loads
AU - Swesi, Alaa O.
AU - Cotsovos, Demitrios M.
AU - Val, Dimitri V.
N1 - Funding Information:
The authors gratefully acknowledge the funding grant/financial support (grant reference AS132-262-47801) provided by the Libyan Embassy-Cultural Attaché-London. The authors would also like to thank the technical staff of the Structural Laboratory at Heriot-Watt University for their support throughout this research. The raw/processed data required to reproduce these findings cannot be shared at this time as the data also forms part of an ongoing study.
Funding Information:
The authors gratefully acknowledge the funding grant/financial support (grant reference AS132-262-47801) provided by the Libyan Embassy-Cultural Attaché-London. The authors would also like to thank the technical staff of the Structural Laboratory at Heriot-Watt University for their support throughout this research.
Publisher Copyright:
© 2022 Elsevier Ltd
PY - 2022/5/1
Y1 - 2022/5/1
N2 - The paper presents results of an experimental study of twenty RC columns, with and without carbon fibre-reinforced polymer (CFRP) wrapping, subjected to the combined action of axial and transverse loads. To better understand how the rate of the transverse load application affects the behaviour of both unstrengthened and strengthened columns, half of the specimens were tested under transverse static loading, while the other half – under transverse impact loading. Six different configurations of CFRP layers were used to strengthen the specimens. The test results presented in the paper include the maximum transverse static and impact forces, load-deflection curves, time-histories of impact and reaction forces, deflections, strains, crack patterns and failure modes. Comparison between the results of the static and impact tests demonstrates that the resistance of the specimens to impact loading was significantly higher than that established in the case of static loading. The corresponding dynamic increase factor (DIF) had values mainly between 8 and 12.The results also show that CFRP strengthening can increase the resistance of RC columns to lateral static and impact loads. However, the increase depends strongly on the configuration of CFRP layers.
AB - The paper presents results of an experimental study of twenty RC columns, with and without carbon fibre-reinforced polymer (CFRP) wrapping, subjected to the combined action of axial and transverse loads. To better understand how the rate of the transverse load application affects the behaviour of both unstrengthened and strengthened columns, half of the specimens were tested under transverse static loading, while the other half – under transverse impact loading. Six different configurations of CFRP layers were used to strengthen the specimens. The test results presented in the paper include the maximum transverse static and impact forces, load-deflection curves, time-histories of impact and reaction forces, deflections, strains, crack patterns and failure modes. Comparison between the results of the static and impact tests demonstrates that the resistance of the specimens to impact loading was significantly higher than that established in the case of static loading. The corresponding dynamic increase factor (DIF) had values mainly between 8 and 12.The results also show that CFRP strengthening can increase the resistance of RC columns to lateral static and impact loads. However, the increase depends strongly on the configuration of CFRP layers.
KW - CFRP strengthening
KW - Failure behaviour
KW - Impact load
KW - Lateral load
KW - RC columns
KW - Testing
UR - http://www.scopus.com/inward/record.url?scp=85124704505&partnerID=8YFLogxK
U2 - 10.1016/j.compstruct.2022.115356
DO - 10.1016/j.compstruct.2022.115356
M3 - Article
SN - 0263-8223
VL - 287
JO - Composite Structures
JF - Composite Structures
M1 - 115356
ER -