The outstanding corrosion resistance performance of FRP bars can avoid the deterioration of concrete structure which is mainly caused by the bar corrosion. Therefore
concrete reinforced with FRP bars has attracted the attention of researchers at home and abroad. The bond behavior between FRP bars and concrete and the anchorage length of FRP bars are the main parameters which can influence the cooperative work of FRP bars and concrete. In this research
pull-out tests of different FRP bars embedded in concrete specimens are carried out. The damage mechanism and bond strength are analyzed. And the formula to estimate the anchorage length of FRP bars is derived
providing the theoretical guidance and basis for the practical engineering.
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references
WEI W, LIU F, XIONG Z, et al . Bond performance between fibre-reinforced polymer bars and concrete under pull-out tests [J ] . Construction and Building Materials, 2019, 227: 116803.
LIN W X, LIU H R, WU D L. Disease analysis and reinforcement practice of Nanshui Bridge [J]. Journal of Guangdong University of Technology, 2008, 25(4): 94-97.
YU Z T, HAN D J. Current conditions evaluation and maintenance plans for a reinforced concrete bridge [J]. Journal of Guangdong University of Technology, 2004, 21(1): 83-87.
HUI Y L, LI R, LIN Z S, QUAN M Y. Experimental studies on the property before and after corrosion of rebars in basic concrete members [J]. Industrial Construction, 1997(6): 15-19, 58.
HASSAN M, BENMOKRANE B, ELSAFTY A, et al . Bond durability of basalt-fiber-reinforced-polymer (BFRP) bars embedded in concrete in aggressive environments [J ] . Composites Part B Engineering, 2016, 106: 262-272.
BENMOKRANE B, ALI A H, MOHAMED H M, et al . Laboratory assessment and durability performance of vinyl-ester, polyester, and epoxy glass-FRP bars for concrete structures [J ] . Composites Part B: Engineering, 2017, 114: 163-174.
FIORE V, SCALICI T, DI BELLA G, et al . A review on basalt fibre and its composites [J ] . Composites Part B: Engineering, 2015, 74: 74-94.
LEE J Y, KIM T Y, KIM T J, et al . Interfacial bond strength of glass fiber reinforced polymer bars in high-strength concrete [J ] . Composites Part B: Engineering, 2008, 39(2): 258-270.
ACHILLIDES Z, PILAKOUTAS K. Bond behavior of fiber reinforced polymer bars under direct pullout conditions [J]. Journal of Composites for Construction, 2004, 8(2): 173-181.
FEI Y, LIN Z, YANG M. Bond mechanism and bond strength of GFRP bars to concrete: A review [J]. Composites Part B Engineering, 2016, 98: 56-69.
ACI Committee 440. ACI 440. 1R-06, Guide for the design and construction of concrete reinforced with FRP bars[S]. Farmington Hills, MI, US: ACI Committee 440, 2007.
CHUS H, KWAN A K H. A new method for pull out test of reinforcing bars in plain and fibre reinforced concrete [J]. Engineering Structures, 2018, 164: 82-91.
EL REFAI A, ABED F, ALTALMAS A. Bond durability of basalt fiber-reinforced polymer bars embedded in concrete under direct pullout conditions [J]. Journal of Composites for Construction, 2015, 19(5): 04014078.
ISLAM S, AFEFY H M, SENNAH K, et al . Bond characteristics of straight- and headed-end, ribbed-surface, GFRP bars embedded in high-strength concrete [J ] . Construction and Building Materials, 2015, 83: 283-298.
COSENZA E, MANFREDI G, REALFONZO R. Development length of FRP straight rebars [J]. Composites Part B: Engineering, 2002, 33(7): 493-504.