Stress-Strain Behavior of FRP-Confined Recycled Aggregate Concrete

被引:94
|
作者
Zhao, J. L. [1 ]
Yu, T. [2 ]
Teng, J. G. [1 ]
机构
[1] Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China
[2] Univ Wollongong, Fac Engn & Informat Sci, Sch Civil Min & Environm Engn, Wollongong, NSW 2522, Australia
关键词
Recycled aggregate concrete; Fiber-reinforced polymer (FRP); Confinement; Stress-strain behavior; COMPRESSIVE BEHAVIOR; MODEL; COLUMNS; PERFORMANCE; SHRINKAGE;
D O I
10.1061/(ASCE)CC.1943-5614.0000513
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
A large amount of research has been conducted on recycled aggregate concrete (RAC) due to its social, environmental, and economic significance. However, the in situ application of RAC has so far been mainly limited to nonstructural purposes, as the performance of RAC, in both the short and long term, is inferior to its normal concrete counterpart. Existing research has shown that the performance of concrete in compression members can be significantly enhanced through external confinement using steel tubes and fiber-reinforced polymer (FRP) tubes/wraps. Some recent research has examined the behavior of steel tubes filled with RAC, but the research on the behavior of RAC confined with FRP has been rather limited. Research is therefore needed to better understand the stress-strain behavior of and develop a reliable stress-strain model for FRP-confined RAC to facilitate the design of members with FRP-confined RAC. This paper presents the results of the first systematic experimental study on the axial compressive behavior of FRP-confined RAC in which 18 FRP-confined RAC cylinders were tested. The effects of the replacement ratio of coarse aggregate (ratio between the mass of recycled coarse aggregate to the total mass of coarse aggregate) and degree of FRP confinement are investigated. Both the axial and lateral strain responses of the specimens are examined in detail. The test results show that specimens with a replacement ratio of 20% behave similarly to that of normal concrete, but specimens with a replacement ratio of 100% exhibit a lower strength and a different stress-strain response. The applicability of two existing stress-strain models for FRP-confined normal concrete to FRP-confined RAC is also examined. (C) 2014 American Society of Civil Engineers.
引用
收藏
页数:11
相关论文
共 50 条
  • [1] Effect of aggregate sizes on dilation properties and stress-strain behavior of FRP-confined recycled aggregate concrete
    Huang, De-Qing
    Li, Peng -Da
    JOURNAL OF BUILDING ENGINEERING, 2024, 89
  • [2] Stress-Strain Behavior of FRP-Confined Recycled Aggregate Concrete in Square Columns of Different Sizes
    Chen, Guangming
    Zhang, Junjie
    Wu, Yufei
    Lin, Guan
    Jiang, Tao
    JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2021, 25 (05)
  • [3] Stress-strain behavior of FRP-confined concrete containing recycled concrete lumps
    Zhou, J. K.
    Lin, Guan
    Teng, J. G.
    CONSTRUCTION AND BUILDING MATERIALS, 2021, 267
  • [4] Path-Dependent Stress-Strain Model for FRP-Confined Recycled Brick Aggregate Concrete
    Jiang, T.
    Chen, P.
    Ji, P.
    Chen, G. M.
    JOURNAL OF COMPOSITES FOR CONSTRUCTION, 2022, 26 (04)
  • [5] Stress-strain relationship for FRP-confined concrete prisms
    Wu, G
    Wu, Z
    Lu, Z
    FIBRE-REINFORCEMENT POLYMER: REINFORCEMENT FOR CONCRETE STRUCTURES, VOLS 1 AND 2, PROCEEDINGS, 2003, : 561 - 570
  • [6] A new stress-strain model for FRP-confined concrete
    Lam, L
    Teng, JG
    FRP COMPOSITES IN CIVIL ENGINEERING, VOLS I AND II, PROCEEDINGS, 2001, : 283 - 292
  • [7] Stress-strain relationship for FRP-confined concrete cylinders
    Wu, G
    Lu, Z
    Wu, Z
    FIBRE-REINFORCEMENT POLYMER: REINFORCEMENT FOR CONCRETE STRUCTURES, VOLS 1 AND 2, PROCEEDINGS, 2003, : 551 - 560
  • [8] Design-Oriented Stress-Strain Model for FRP-Confined Lightweight Aggregate Concrete
    Dabbagh, Hooshang
    Delshad, Maysam
    Amoorezaei, Kasra
    KSCE JOURNAL OF CIVIL ENGINEERING, 2021, 25 (01) : 219 - 234
  • [9] Design-Oriented Stress-Strain Model for FRP-Confined Lightweight Aggregate Concrete
    Hooshang Dabbagh
    Maysam Delshad
    Kasra Amoorezaei
    KSCE Journal of Civil Engineering, 2021, 25 : 219 - 234
  • [10] Stress-strain model for FRP-confined concrete for design applications
    Lam, L
    Teng, JG
    FIBRE-REINFORCEMENT POLYMER: REINFORCEMENT FOR CONCRETE STRUCTURES, VOLS 1 AND 2, PROCEEDINGS, 2003, : 99 - 110