A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Fibres for enhancing of the bond capacity between GFRP rebar and concrete
The effect of steel fibres (SF) and macro-polypropylene fibres (PPA) on the bond capacity between GFRP rebar and concrete has been studied in this work. A novel method using the equivalent bond strength to evaluate the bond toughness is proposed. In comparison with the bond property of GFRP rebar in plain concrete (PC) matrix, the investigation indicates that adding macro mono fibres or hybrid fibres into concrete can enhance both the bond strength and the bond toughness. Especially, the hybrid use of SF and PPA demonstrates a significant positive synergetic effect on the bond behavior of GFRP rebars in concrete. The results show that the bond capacity of GFRP rebars in concrete reinforced by hybrid fibres can be equivalent to that or better than that of steel rebar in plain concrete. ; The authors gratefully acknowledge the National Natural Science Foundation: Grants: 51078058 and 51121005, Fundação para a Ciência e a Tecnologia (SFRH/BPD/22680/2005) and The FEDER Funds through “Programa Operacional Factores de Competitividade - COMPETE” and by Portuguese Funds through FCT - within the Projects PEst-CMAT/UI0013/2011 and PTDC/MAT/112273/2009
Fibres for enhancing of the bond capacity between GFRP rebar and concrete
The effect of steel fibres (SF) and macro-polypropylene fibres (PPA) on the bond capacity between GFRP rebar and concrete has been studied in this work. A novel method using the equivalent bond strength to evaluate the bond toughness is proposed. In comparison with the bond property of GFRP rebar in plain concrete (PC) matrix, the investigation indicates that adding macro mono fibres or hybrid fibres into concrete can enhance both the bond strength and the bond toughness. Especially, the hybrid use of SF and PPA demonstrates a significant positive synergetic effect on the bond behavior of GFRP rebars in concrete. The results show that the bond capacity of GFRP rebars in concrete reinforced by hybrid fibres can be equivalent to that or better than that of steel rebar in plain concrete. ; The authors gratefully acknowledge the National Natural Science Foundation: Grants: 51078058 and 51121005, Fundação para a Ciência e a Tecnologia (SFRH/BPD/22680/2005) and The FEDER Funds through “Programa Operacional Factores de Competitividade - COMPETE” and by Portuguese Funds through FCT - within the Projects PEst-CMAT/UI0013/2011 and PTDC/MAT/112273/2009
Fibres for enhancing of the bond capacity between GFRP rebar and concrete
Ding, Yining (author) / Ning, Xiliang (author) / Zhang, Yulin (author) / Pacheco-Torgal, F. (author) / Aguiar, J. L. Barroso de (author)
2014-01-01
doi:10.1016/j.conbuildmat.2013.10.089
Article (Journal)
Electronic Resource
English
DDC:
690
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