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Development of Optimum Grip System in Developing Design Tensile Strength of GFRP Rebars
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 Title & Authors
Development of Optimum Grip System in Developing Design Tensile Strength of GFRP Rebars
You Young-Chan; Park Ji-Sun; You Young-Jun; Park Young-Hwan; Kim Keung-Hwan;
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Previous test results showed that the current ASTM(American Standard for Testing and Materials) grip adapter for GFRP(Glass Fiber Reinforced Polymer) rebar was not fully successful in developing the design tensile strength of GFRP rebars with reasonable accuracy. It is because the current ASTM grip adapter which is composed of a pair of rectangular metal blocks of which inner faces are grooved along the longitudinal direction does not take into account the various geometric characteristics of GFRP rebar such as surface treatment, shape of bar cross section as well as physical characteristics such as poisson effect, elastic modulus in the transverse direction and so on. The objective of this paper is to provide how to proportion the optimum diameter of inner groove in ASTM grip adapter to develop design tensile strength of GFRP rebar. The proportioning of inner groove in ASTM grip adapter is based on the force equilibrium of GFRP rebar between tensile capacity and minimum frictional resistance required along the grip adapter. The frictional resistance of grip adapter is calculated based on the compressive strain compatibility in radial direction induced by the difference between diameter of GFRP rebar and inner groove In ASTM grip. All testing procedures were made according to the CSA S806-02 recommendations. From the preliminary test results on round-type GFRP rebars, it was found that maximum tensile loads acquired under the same testing conditions is highly affected by the diameter of inner groove in ASTM grip adapter. The grip adapter with specific dimension proportioned by proposed method recorded the highest tensile strength among them.
GFRP(glass fiber reinforced polymer) rebar;testing methods;tensile strenght;grip system;ASTM(American Standard for Testing and Material) grip;
 Cited by
섬유보강 콘크리트(ECC)와 GFRP 보강근의 부착 특성,최윤철;박금성;최창식;최현기;

한국콘크리트학회논문집, 2011. vol.23. 6, pp.809-815 crossref(new window)
GFRP 보강근으로 겹침이음된 휨 부재의 거동에 관한 실험적 연구,최윤철;최현기;최창식;

대한건축학회논문집:구조계, 2011. vol.27. 4, pp.3-10
GFRP 보강근으로 겹이음된 콘크리트 보의 보강비에 따른 거동특성,최윤철;박금성;최현기;최창식;

한국구조물진단유지관리공학회 논문집, 2011. vol.15. 1, pp.67-76 crossref(new window)
Bond Properties of GFRP Rebar in Fiber Reinforced Concrete (Engineered Cementitious Composite), Journal of the Korea Concrete Institute, 2011, 23, 6, 809  crossref(new windwow)
원종필, 박찬기, 서정민, 공태웅, 성상경, 최석원, '고연성 하이브리드 FRP 리바의 화학적 환경 노출 후 부착 성능', 한국콘크리트학회 2004 가을 학술발표회논문집, Vol.16, No.2, 2004, pp.333-336

박찬기, 원종필, 강주원, '콘크리트 보강용 FRP 보강 근의 내구성 설계를 위한 환경영향계수의 제안', 콘크리트학회 논문집, Vol.16, No.4, 004, pp.529-539

원종필, 박찬기, 황금식, 윤종환, '콘크리트 보강용 하이브리드 FRP 리바의 특성', 한국콘크리트학회 2003 봄 학술발표회논문집, Vol.15, No.1, 2004, pp.255-260

박지선, 유영찬, 박영환, 최기선, 유영준, 김긍환, 'GFRP Rebar의 인장특성 및 시험법에 관한 연구', 한국콘크리트학회 2003 봄 학술발표회논문집, Vol.15, No.1, 2004, pp.172 -175

박지선, 유영찬, 박영환, 김형열, 유영준, 김긍환, 'GFRP Rebar의 적정 인장강도 발현을 위한 정착구 개발에 관한 연구', 한국콘크리트학회 2004 가을 학술 발표회 논문집, Vol.16, No.2, 2004, pp.797-800

ISIS Canada, Reirforcing Concrete Structures with Fiber Reinforced Polymers, Design Manual No.3, Sep. 2001, pp.5.1 -13.4

Canadian Standard Association, Design and Construction of Building Components with Fiber-Reinforced Polymers, Canadian Standard Association, May 2002, pp.73-83

American Society for Testing and Materials, Standard Test Method for Tensile Properties of Pultruded Glass-Fiber-Reinforced Plastic Rod (ASTM D3916-02), Annual Book of ASTM Standards, Vol.08.03, 2002, pp.1-4

A. Al-Mayah, K Soudki, and A Plumtree, 'Mechanical Behavior of CFRP Rod Anchors under Tensile Loading', Journal of Composites for Construction, Vol.5, No.2, May 2001, pp.128-135 crossref(new window)

L. Javier Malvar, 'Tensile and Bond Properties of GFRP Reinforcing Bars', ACI Materials Journal, Vol.92, No.3, May-Jun. 1995, pp.276-285