Bond behaviour of recycled aggregate concrete with basalt fibre-reinforced polymer bars

Xiong，Zhe1; Wei，Wei2; Liu，Feng1,3; Cui，Chuying4; Li，Lijuan1,3; Zou，Rui1; Zeng，Yin1

2021-01-15

10.1016/j.compstruct.2020.113078

COMPOSITE STRUCTURES   影响因子和分区

0263-8223

1879-1085

The combination of recycled aggregate concrete (RAC) and fibre-reinforced polymer (FRP) bars can effectively avoid corrosion. Bond performance is an important factor affecting the bearing capacity of RAC structures reinforced with FRP bars. In this study, the effects of the contact interface, concrete type, bar dimension, and surface shape of FRP bars on the bond performance of 39 pull-out specimens were investigated. The failure mode was analysed, and the evolution of damage at the interface between the concrete and basalt fibre-reinforced polymer (BFRP) bars was investigated. Moreover, the bond mechanism and the characteristics of the bond stress-slip curves were revealed. The effects of the design parameters on the bond strength, bond stiffness, residual bond strength, and slip were determined. A constitutive model was proposed to simulate the bond stress-slip relationship. Formulae to estimate the characteristic parameters were derived to develop the proposed model. The proposed model was shown to agree well with the experimental bond stress-slip curves. Finally, the development length of the BFRP bar-reinforced RAC structures was determined. The findings from this study could promote the application of BFRP bar-reinforced RAC structures and provide an experimental and theoretical basis for the design of their bond performance.

BFRP bars Constitutive model Development length Evolution of damage RAC

SCI ; EI

英语

其他

Natural Science Foundation of Guangdong Province[2018A030310547] ; National Natural Science Foundation of China[12032009] ; Science and Technology Project of Guangdong Province[2017B020238006] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0503]

Mechanics ; Materials Science

Mechanics ; Materials Science, Composites

WOS:000600453500008

ELSEVIER SCI LTD

20204309376894

Bridge decks ; Corrosion ; Reinforced concrete ; Basalt ; Concrete aggregates ; Constitutive models ; Bond strength (materials) ; Fiber reinforced plastics ; Structural design

Bridges:401.1 ; Structural Design, General:408.1 ; Concrete:412 ; Industrial Wastes:452.3 ; Mathematics:921 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85092727759

Scopus

1.School of Civil and Transportation Engineering,Guangdong University of Technology,Guangzhou,510006,China
2.Guangdong Construction Polytechnic,Guangzhou,510440,China
3.Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou),Guangzhou,511458,China
4.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Xiong，Zhe,Wei，Wei,Liu，Feng,et al. Bond behaviour of recycled aggregate concrete with basalt fibre-reinforced polymer bars[J]. COMPOSITE STRUCTURES,2021,256.

Xiong，Zhe.,Wei，Wei.,Liu，Feng.,Cui，Chuying.,Li，Lijuan.,...&Zeng，Yin.(2021).Bond behaviour of recycled aggregate concrete with basalt fibre-reinforced polymer bars.COMPOSITE STRUCTURES,256.

Xiong，Zhe,et al."Bond behaviour of recycled aggregate concrete with basalt fibre-reinforced polymer bars".COMPOSITE STRUCTURES 256(2021).