한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제46권3호
  • /
  • Pages.73-81
  • /
  • 2004
  • /
  • 1738-3692(pISSN)
  • /
  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
권호 표지
DOI QR코드

DOI QR Code

화학적 환경에 노출된 콘크리트 보강용 FRP 보강근의 부착 성능

Bond Performance of FRP Reinforcing Bar for Concrete Structures after Chemical Environmental Exposure

  • 박찬기 (건국대학교 사회환경시스템공학과) ;
  • 원종필 (건국대학교 사회환경시스템공학과)
  • 발행 : 2004.05.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

FRP reinforcing bars(rebars) are produced through a variety of manufacturing process includes pultrusion, and filament winding and braiding etc. Each manufacturing method produces a different surface condition of FRP rebar. The surface properties of FRP rebar is an important property for mechanical bond with concrete. Current methods of providing surface deformation to FRP rebars include helical wrapping, surfaces and coating and rib molding. The problem with the helical wrapping method is that it can not provide enough surface deformation for good bond and it can be easily sheard off from the FRP rebars. Sand coating and rib molding provide surface deformation only to the outer FRP skins. Therefore, FRP rebar has about 60% of bond strength of steel rebar. The main objective was to evaluate the bond properties of FRP rebar after environmental exposure. Five types of FRP rebar includes CFRP ISO, GFRP Aslan, AFRP Technora CFRP(Korea), and GFRP(Korea) rebars performed direct bond tests. Also, FRP rebar bond specimens were subjected to exposure conditions including alkaline solution, acid solution, salt solution and deionized water etc. According to bond test results, CFRP(Korea) and CFRP(Korea) rebars were found to have better bond strength with concrete than previous FRP rebars. Also, FRP(Korea) rebar had more than about 70% in bond strength of steel rebar.

키워드

참고문헌

  1. ACI Report 440R, 1996, State-of-the-art report on fiber reinforced plastic reinforcement for concrete structure, reported by ACI Committee 440, Detroit, Ml, USA
  2. ACI 440H, 2000, Guide for the Design and Construction of Concrete Reinforced with FRP bars, American Concrete Institute Committee 440.
  3. Al-Dulaijan, S.U., A. Nanni, M.M. Al-Zahrani., and C.E. Bakis., 1996, Bond Evaluation of Environmentally Conditioned GFRP/Concrete System, Proceedings of the Second International Conference on Advanced Composite Materials in Bridges and Structures (ACMBS-2), M. M. EI-Badry, Ed., Canadian Society for Civil Engineering, Montreal, Quebec, pp.845-852
  4. Bakis, C. E., A.J. Freimanis., D. Gremel., and A. Nanni., 1998, Effect of Resin Material on Bond and Tensile Properties of Unconditioned and Conditioned FRP Reinforcement Rods, Proceedings of the First international Conference on Durability of Composites for Construction, B. Benmokrane, and H. Rahman, Eds., Sherbrooke, Quebec. pp.525-535
  5. Bank, L.C., M. Puterman., and A. Katz., 1998, The Effect of Material Degradation on Bond Properties of FRP Reinforcing Bars in Concrete, ACI Materials Journal, V. 95, No. 3, pp.232-243.
  6. Boothby, T.E., A. Nanni., C.E. Bakis., and H. Huang., 1995, Bond of FRP Rods Embedded in Concrete, Engineering Mechanics, Proc. 10th Conf., Vol. 1, S. Sture, ed., American Society Civil Engineers. New York, pp.114-117.
  7. Chaallal, O. and B. Benmokrane., 1993, Pullout and Bond of Glass - Fibre Rods Embedded in Concrete ard Cement Grout, Materials and Structures, 26, pp.167-175. https://doi.org/10.1007/BF02472934
  8. Faza, S.S., and H.V.S. GangaRao., 1990, Bending and Bond Behavior of Concrete Beams Reinforced with Plastic Rebars, Transportation Research Record 1290, pp.185-193.
  9. Freimanis, A.J., C.E. Bakis., A. Nanni., and D. Gremel., 1998, A Comparison of Pullout and Tensile Behaviors of FRP Reinforcement for Concrete, Proceedings of the Second International Conference on Composites in Infrastructure (lCCI-98), Tucson, Arizona, V. 2, pp. 52-65.
  10. Johnston, D.W. and P. Zia., 1982, Bond Characteristics of Epoxy Coated Reinforcing Bars, Report No. FHWA/NC/82-002, North Carolina State University, Raleigh, North Carolina.
  11. Larralde, J., R. Silva- Rodriguez., J. Burdette., and B. Harris., 1994, Bond Tests of Fiberglass-Reinforced Plastic Bars in Concrete, Journal of Testing and Evaluation, 22(4), pp.351-359. https://doi.org/10.1520/JTE11844J
  12. Mathey, R. G. and D. Watstein., 1961, Investigation of Bond in Beam and Pull- Out Specimens with High-Yield-Strength Deformed Bars, Journal of the American Concrete Institute, 57(9), pp. 1071-1090.
  13. Nanni A., S. Rizkalla., C.E. Bakis., J.O. Conrad., and A.A. Abdelrahman., 1998, Characterization of GFRP Ribbed Rod Used for Reinforced Concrete Construction, Proceedings of the International Composites Exhibition (ICE-98), Nashville, Tennessee, pp. 16A/1-6. 26
  14. Park, C. G, and J.P. Won., 2004, Tensile Behavior and Fracture Properties of Ductile Hybrid FRP Reinforcing Bar for Concrete Reinforcement, Journal of the Korean Society of Agricultural Engineers, Vol. 46, No. 1 , pp. 41-51. (in Korean)

피인용 문헌

  1. Comparison between Spatial Interpolation Methods of Temperature Data for Garlic Cultivation vol.53, pp.5, 2011, https://doi.org/10.5389/KSAE.2011.53.5.001
  2. Durability Characteristics of Glass Fiber Reinforced Polymer Composite Clapping Plates for Application of Rubber Dam vol.53, pp.5, 2011, https://doi.org/10.5389/KSAE.2011.53.5.017