An Experimental Study on the Stress-Strain Relationship of Concrete Confined with Spiral & Carbon Fiber Sheets

탄소섬유쉬트와 나선형철근으로 동시에 구속된 콘크리트의 응력-변형률 관계에 대한 실험적 연구

The stress-strain curve of concrete confined with both spiral and carbon fiber sheet(CFS) is different to that of concrete confined with only spiral or CFS. The objective of this study is to investigate the stress-strain relation of concrete confined by composite material. In this study, 24 concrete cylinders were tested. The main variable of the cylinders was the content rate of spiral to CFS. The test results indicated that while the compressive strength of cylinder confined with both spiral and CFS increased proportionally to the aided amount of two materials, the maximum strain of cylinder depended on the larger strain of spiral or CFS.