JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Effect of Multi-Layer Carbon Fiber Sheet Used for Strengthening Reinforced Concrete Beams
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Effect of Multi-Layer Carbon Fiber Sheet Used for Strengthening Reinforced Concrete Beams
You Young-Chan; Choi Ki-Sun; Kim Keung-Hwan;
  PDF(new window)
 Abstract
The purpose of this study is to investigate the flexural strengthening effects of CF(Carbon Fiber) sheet for the full-scale RC beams with multi-layer CF sheets. The partial strength reduction factors of CF sheets are suggested from the full-scale RC beams tests strengthened with multi-layer CF sheets up to six layers as well as material tests. From the material tensile tests, it was observed that the average tensile strengths of CF sheets per layer are decreased as the number of CF sheets is increased. Also the steep strength reductions of CF sheets in material test results at rupture are observed compared with the structural tests results for the full-scale RC beams strengthened with multi-layer CF sheets. Finally, the partial strength reduction factors far CF sheets up to six layers are suggested considering the effects of multi-layer and unit weight of CF sheets.
 Keywords
CF(carbon fiber) sheet;CFRP(carbon fiber reinforced Polymer);partial strength reduction factor;design strength;multi-layer;
 Language
English
 Cited by
 References
1.
Sin, S.-W., 'Effect of anchorage type of CFS on flexural behavior of RC beam ', Journal of Korea institute for Structural Maintenance Inspection, Vol.2 No.2, 1998, pp.202-208

2.
Lee, Y.-T., 'Improvement of flexural capacity of reinforced concrete beams reinforced by CFS,' Journal of Korea institute for Structural Maintenance Inspection, Vol.3 No.3, 1999, pp.203-211

3.
Lee, H.-S., 'Strength of material of CFS,' Journal of Korea Concrete Institute, Vol. 10 No.2, 1998, pp.803-808

4.
Architectural Institute of Korea, 'Repairing and strengthening of concrete structure,' Technical Report ATR 97-1, 1997, pp.127-131

5.
You, Y.-C., Kim, K.-H., Choi, K.-S., 'Performance Evaluation of Repair and Strengthening for RC Building Structure,' Korea Institute of Construction Technology, 2001, pp.220-261

6.
建築研究振興協會, '炭素纖維シート補強工事の材料と工法', 建築研究振興協曾, 1997, pp.23-26

7.
日本コンクリー卜工學協會, '炭素纖維シートによるコンクリート構造物の補修.補強設計.施工マニュアル(案) 橋脚編', 連績纖維補強コンクリート研究委員曾報告集, 1997, pp.122-124

8.
ACI Committee 440, 'Guide for the Design and Construction of Externally Bonded FRP System for Strengthening Concrete Structure,' American Concrete Institute, 2002, pp.21-25