Abstract—Over the past 15 years, large scale construction of medium-rise buildings, built using Low Ductility Reinforced Concrete (LDRC) wall, have been commonplace in Peru. These walls do not have boundary columns and have a small quantity of reinforcing bars at each end, therefore is expected to fail in flexural mode. From past studies, where a retrofitting method was proposed by using Carbon fibEr Sheet (CFS) over the LDRC wall, it was verified that CFS delays the concrete crushing of the wall base that occurs during flexural failure and that deformation capacity was improved. In order to verify the confinement effect of the carbon fiber sheet over the concrete, an experiment was conducted using concrete samples with CFS by changing the size, shape and amount of CFS layers. In total, 39 concrete samples were tested under compressive loading (monotonic and cyclic). From the experiment, it was confirmed that deformation performance improved and the strength of the concrete was increased due to the confinement. However, it should be noted that the stress-strain relationship of concrete with CFS depends on the shape of the concrete sample.
 

Index Terms—reinforced concrete, carbon fiber sheet, confinement effect

Cite: Roy Reyna, Taiki Saito, Tomoya Matsui, and Kazuhiro Hayashi, "Confinement Effect of Concrete with Carbon Fiber Sheet Reinforcement under Compressive Loading," International Journal of Structural and Civil Engineering Research, Vol. 5, No. 4, pp. 250-257, November 2016. doi: 10.18178/ijscer.5.4.250-257