Numerical Investigation of the Bond–Slip Mechanism Between Deformed CFRP Bars and Ultra-High Performance Concrete
Source abstract
Abstract
To further investigate the bond behavior between carbon fiber-reinforced polymer (CFRP) bars and ultra-high-performance concrete (UHPC) under monotonic loading, a finite element model was established in ABAQUS based on existing experimental data. The material parameters, constitutive models, and interface contact definitions were verified through numerical simulation. Utilizing this modeling strategy, 36 center-pull finite element models with dimensions of 150 mm × 150 mm × 150 mm were analyzed. By systematically varying the geometric parameters of the CFRP bars, the effects of surface configuration, bar diameter, and rib spacing on the bond performance between CFRP bars and UHPC were analyzed. The results demonstrate that uniform-ribbed bars exhibit the highest bond performance, followed by helical-ribbed bars, whereas dented-ribbed bars show the lowest bond strength. The ultimate bond strength decreases with increasing bar diameter. For uniform-ribbed bars, the optimal rib spacing is 1.2D (where D is the bar diameter), resulting in the highest peak bond strength.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Innovative concrete reinforcement materials · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Intelligent Health Perception and Ecological Restoration of Rivers and Lakes, School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China
References (30)
Show source-provided references
1. Precise design and characteristics prediction of Ultra-High Performance Concrete (UHPC) based on artificial intelligence techniques10.1016/j.cemconcomp.2021.104171 ↗
2. Ductility characteristics of strain-hardening ultra-high-performance concrete: ANN and empirical approaches
3. Development and characterization of printable rubberised ultra-high-performance concrete10.1016/j.jobe.2025.113192 ↗
4. Axial compressive behaviour of H-shaped steel members strengthened with ultra-high performance concrete with coarse aggregates (CA-UHPC): Experimental study and theoretical analysis10.1016/j.conbuildmat.2025.143257 ↗
5. Transfer learning for intelligent design of lightweight Strain-Hardening Ultra-High-Performance Concrete (SH-UHPC)10.1016/j.autcon.2025.106241 ↗
6. Bonding behavior and prediction of helically ribbed CFRP bar embedded in ultra high-performance concrete (UHPC)
7. Axial compression behaviour of concrete columns with CFRP-mesh fabric (CFRP-MF) stirrup and steel-FRP composite bar (SFCB): Experimental investigation and mechanism research10.1016/j.conbuildmat.2024.136853 ↗
8. Investigation on the electrochemical and mechanical performance of CFRP and steel-fiber composite bar used for impressed current cathodic protection anode10.1016/j.conbuildmat.2020.119377 ↗
9. Method of measuring the mechanical impact loads of lightning on CFRP composites
10. Bond of Reinforcement in Ultra-High-Performance Concrete10.14359/51687912 ↗
11. Numerical analysis on bonding performance between CFRP bar and concrete at polar low temperatures
12. Ouyang, L.Z., Song, X.B., Yin, C.R., Xiao, X.W., and Qi, L.G. (2025). Bond behavior between CFRP bars with different surface characteristics and concrete. China Civ. Eng. J., 1–11.
13. Experimental Study on the Bond Behavior of the CFRP Bar-UHPC Interface in Composite Anchorage10.1061/JCCOF2.CCENG-4936 ↗
14. Bar surface treatment effect on the bond-slip behavior and mechanism of basalt FRP bars embedded in concrete10.1016/j.conbuildmat.2021.122844 ↗
15. Effect of CFRP confinement on bond-slip behavior of steel rebar in low-strength concrete: Experimentation, prediction and parametric study10.1016/j.conbuildmat.2025.141333 ↗
16. Steel rebar bond-slip behavior in CFRP-strengthened low-strength concrete: ML-driven solution and reliability analysis10.1016/j.conbuildmat.2025.142302 ↗
17. (2012). Standard for Test Method of Concrete Structures (Standard No. GB50152-2012). (In Chinese).
18. Study on hydraulic concrete cracking criterion in smeared crack numerical model
19. Behavior of Steel Fiber-Reinforced Concrete under Biaxial Stresses
20. A plastic-damage model for concrete under compression10.1016/j.ijmecsci.2018.10.042 ↗
21. Modelling of reinforced concrete structures and composite structures with concrete strength degradation taken into consideration10.1016/S1644-9665(12)60105-8 ↗
22. Bond durability of basalt-fiber-reinforced-polymer (BFRP) bars embedded in concrete in aggressive environments10.1016/j.compositesb.2016.09.039 ↗
23. A review on machinability of carbon fiber reinforced polymer (CFRP) and glass fiber reinforced polymer (GFRP) composite materials10.1016/j.dt.2018.02.001 ↗
24. Shan, B. (2002). Experimental Studies on Long-Term Behavior of FRP Retrofitted RC Columns with Earthquake Loading Damage. [Ph.D. Thesis, Hunan University].
25. Zhang, Z. (2016). Bending Behaviors of Composite Bridge Deck System Composed of OSD and Reinforced UHPC Layer. [Ph.D.Thesis, Hunan University].
26. A review on constitutive relationship of ultra-high-performance concrete under uniaxial compression and tension
27. Bond behavior between steel bar and concrete considering cryogenic temperatures and confinement
28. Experimental study on bonding behavior between CFRP smooth bar and UHPC under impact loading
29. Hsu, T.T. (2017). Unified Theory of Reinforced Concrete, Routledge.
30. Experimental study and calculating method for bond strength between helically ribbed GFRP bar and UHPC