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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.14 No.5
- 발행연도
- 2020.9
- 수록면
- 643 - 659 (17page)
이용수
초록· 키워드
오류제보하기
Steel fiber reinforced polymer (SRP) composite materials, which consist of continuous unidirectional steel wires (cords) embedded in a polymeric matrix, have recently emerged as an effective solution for strengthening of reinforced concrete (RC) structures. SRP is bonded to the surface of RC structures by the same matrix to provide external reinforcement. Interfacial debonding between the SRP and concrete is a primary concern in this type of application. This study aimed to investigate the bond characteristics between SRP and concrete determined by single-lap direct shear tests with different composite bonded lengths and fiber sheet densities (cord spacings). Specimens with medium density fibers failed mainly due to composite debonding, whereas those with low density fibers failed due to fiber rupture. Results of specimens that exhibited debonding were used to determine the bond-slip relationship of the SRP-concrete interface and to predict the full-range load response, which was in good agreement with the experimental results. A database of SRP-concrete direct shear tests reported in the literature was also established. Four analytical equations derived for fiber reinforced polymer (FRP)-concrete debonding were evaluated based on the database results and were found to predict the maximum load within approximately 15% error on average, however, they all underestimated the effective bond length.
목차
Abstract
1. Introduction
2. Materials
3. Methods
4. Experimental results and discussion
5. Determination of bond–slip relationship from the peak load‑bonded length relationship
6. Evaluation of equations for FRP‑concrete bond‑slip behavior
7. Conclusions
References
참고문헌 (43)
참고문헌 신청
2017 / ACI 440.2R-17. (2017). Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures / American Concrete Institute
Alabdulhady, M. Y. / 2019 / Torsional strengthening of reinforced concrete beams with externally bonded composites : A state of the art review / Construction and Building Materials 205:148~163
Ascione, F. / 2017 / An experimental investigation on the bond behavior of steel reinforced polymers on concrete substrate / Composite Structures 181:58~72
2017 / ASTM C39/C39M-17b. (2017). Standard test method for compressive strength of cylindrical concrete specimens / ASTM International
2017 / ASTM C496, C496M. (2017). Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens / ASTM International :2011
Alabdulhady, M. Y. / 2019 / Torsional strengthening of reinforced concrete beams with externally bonded composites : A state of the art review / Construction and Building Materials 205:148~163
Ascione, F. / 2017 / An experimental investigation on the bond behavior of steel reinforced polymers on concrete substrate / Composite Structures 181:58~72
2017 / ASTM C39/C39M-17b. (2017). Standard test method for compressive strength of cylindrical concrete specimens / ASTM International
2017 / ASTM C496, C496M. (2017). Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens / ASTM International :2011
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UCI(KEPA) : I410-ECN-0101-2020-532-001290843