A Machine Learning-Based Method for Predicting Bond Strength Between FRP Bars and Concrete

LI Hua; GU Jinben; TAO Yi

doi:10.3724/j.gyjzG25080202

Volume 55 Issue 10

Oct. 2025

Turn off MathJax

Article Contents

Article Navigation > INDUSTRIAL CONSTRUCTION > 2025 > 55(10): 102-114

LI Hua, GU Jinben, TAO Yi. A Machine Learning-Based Method for Predicting Bond Strength Between FRP Bars and Concrete[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(10): 102-114. doi: 10.3724/j.gyjzG25080202

Citation:

LI Hua, GU Jinben, TAO Yi. A Machine Learning-Based Method for Predicting Bond Strength Between FRP Bars and Concrete[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(10): 102-114. doi: 10.3724/j.gyjzG25080202

LI Hua, GU Jinben, TAO Yi. A Machine Learning-Based Method for Predicting Bond Strength Between FRP Bars and Concrete[J]. INDUSTRIAL CONSTRUCTION, 2025, 55(10): 102-114. doi: 10.3724/j.gyjzG25080202

Citation:

PDF( 2858 KB)

A Machine Learning-Based Method for Predicting Bond Strength Between FRP Bars and Concrete

doi: 10.3724/j.gyjzG25080202

LI Hua¹,
GU Jinben^1,2,
TAO Yi^{1,2
,
,}

1. College of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. State Key Laboratory of Green Building, Xi'an 710055, China

Received Date: 2025-08-02
Publish Date: 2025-10-31

Abstract

Abstract

This study investigates the bond strength between fiber-reinforced polymer （FRP） bars and concrete. A database was constructed by integrating 487 pull-out test data points from 16 literature sources， featuring 12 input variables such as fiber type， forming process， and surface characteristics. Seven machine learning algorithms， such as RF， XGBoost， and LightGBM， were employed for prediction. The influence mechanisms of the 12 variables on the bond strength were analyzed and compared. The prediction results indicated the compressive strength of concrete， along with the tensile strength and elastic modulus of the FRP bars， as the key factors affecting the bond strength. Among them， tree models showed superior performance to non-tree models， with the LightGBM algorithm exhibiting high accuracy and efficiency. SHAP value evaluation revealed that forming processes （e.g.， the RB process） had a greater influence on the bond strength than fiber type did. Furthermore， the significance of all involved variables was quantitatively ranked using the LightGBM algorithm， showing that the mechanical properties of the materials and the surface characteristics of the FRP bars had a more significant effect on the bond strength.
- FRP bars,
- concrete,
- bond strength,
- machine learning,
- forming process

FullText(HTML)

References(26)

References

[1]	叶佳淇，刘华新. FRP筋与混凝土粘结性能研究进展[J]. 佛山陶瓷，2025，35（2）:4-6.
[2]	HOLLAWAY L C. A review of the present and future utilisation of FRP composites in the civil infrastructure with reference to their important in-service properties[J]. Construction and Building Materials，2010，24（12）:2419-2445.
[3]	蒋田勇，杨康培，喻晨宇，等. 基于SSA-XGBoost的FRP筋与多种类混凝土粘结强度预测模型研究[J/OL]. 工程力学，1-15[ 2025-03-24]. https://doi.org/10.6052/j.issn.1000-4750.2024.10.0775.
[4]	康俊涛，胡聪，余泽川. 考虑筋肋参数耦合作用的螺旋肋FRP筋与混凝土粘结强度预测[J]. 武汉理工大学学报，2024，46（9）:45-52.
[5]	SAQIB H，MUSAAD Z N K，HAMMAD A K. Bond performance of basalt FRP bar against aggressive environment in high-strength concrete with varying bar diameter and bond length[J]. Construction and Building Materials，2022，349，128779.
[6]	齐爱朋. 机器学习在系统性学习中的应用探析[J]. 电脑知识与技术，2024，20（34）:14-16.
[7]	白晟渝. FRP筋-再生混凝土粘结性能试验研究[D]. 兰州:兰州交通大学. 2023.
[8]	郝庆多，王言磊，侯吉林，等. GFRP带肋筋粘结性能试验研究[J]. 工程力学，2008（10）:158-165.
[9]	MOHAMED F M F，SHEHAB ELDEEN A S A，WU Z S. Bar surface treatment effect on the bond-slip behavior and mechanism of basalt FRP bars embedded in concrete[J]. Construction and Building Materials，2021，289，122844.
[10]	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.
[11]	MARIA A A，MARIANOVELLA L，MARISA P. Bond performances of FRP rebars-reinforced concrete[J]. Journal of Materials in Civil Engineering，2007，19（3）:205-213.
[12]	SANDOR S，GYÖRGY L B. Bond of FRP bars with different surface characteristics[J]. Construction and Building Materials，2020，264，119839.
[13]	ZHANG P，ZHANG S，GAO D，et al. Influence of rib parameters on mechanical properties and bond behavior in concrete of fiber-reinforced polymer rebar[J]. Advances in Structural Engineering，2021，24（1）:196-208.
[14]	AHMED E R，MOHAMED-AMINE A，RADHOUANE M. Bond Performance of Basalt Fiber-Reinforced Polymer Bars to Concrete[J]. Journal of Composites for Construction，2015，19（3），04014050.
[15]	HARAJLI M，ABOUNIAJ M. Bond performance of GFRP bars in tension:experimental evaluation and assessment of ACI 440 guidelines[J]. Journal of Composites for Construction，2010，14（6）:659-668.
[16]	JENNJFER L，HAMDY M A，HOSSEIN A，et al. Bond characteristics of glass-fibre-reinforced polymer bars in high-strength concrete[J]. Structures and Buildings，2022，175（10）:748-764.
[17]	YAN F，LIN Z，ZHANG D，et al. Experimental study on bond durability of glass fiber reinforced polymer bars in concrete exposed to harsh environmental agents:Freeze-thaw cycles and alkaline-saline solution[J]. Composites Part B:Engineering，2017，116:406-421.
[18]	WEI W，LIU F，XIONG Z，et al. Effect of loading rates on bond behaviour between basalt fibre-reinforced polymer bars and concrete[J]. Construction and Building Materials，2020，231，117138.
[19]	MA G W，HUANG Y M，ASLANI F，et al. Tensile and bonding behaviours of hybridized BFRP-steel bars as concrete reinforcement[J]. Construction and Building Materials，2019，201:62-71.
[20]	KIM B，DOH J H，YI C K，et al. Effects of structural fibers on bonding mechanism changes in interface between GFRP bar and concrete[J]. Composites Part B:Engineering，2013，45（1）:768-779.
[21]	高嘉琪. 不同表面特性FRP筋与海水海砂混凝土粘结性能试验研究[D]. 大连:大连理工大学，2022.
[22]	范小春，郭浩宇，张澳，等. BFRP筋与混杂钢纤维超高性能混凝土粘结性能分析[J]. 河海大学学报（自然科学版），2025，53（5）:154-161.
[23]	Am Concr Inst. Guide for the design and construction of structural concrete reinforced with fiber-reinforced polymer（FRP）bars:ACI 440.1R-15[S]. Farmington Hills MI:Am Concr Inst，2015.
[24]	LI P，JIN L，ZHANG R，et al. Static bond performance between BFRP bars and concrete with stirrup confinement:a refined modelling[J]. Eng Struct，2022，262，114379.
[25]	NEPOMUCENO E，SENA-CRUZ J，CORREIA L，et al. Review on the bond behavior and durability of FRP bars to concrete[J]. Constr Build Mater，2021，287，123042.
[26]	DIAB A，ELYAMANY H E，HUSSEIN M，et al. Bond behavior and assessment of design ultimate bond stress of normal and high strength concrete[J]. Alexandria Engineering Journal，2014，53:355-371.