Experimental and theoretical studies on bond behavior between BFRP bars and HFRC under dynamic load

Ming Zhou; Huayi Wang; Jia He; Zhiyi Tang; Bingyan Wei

doi:10.1016/j.cscm.2025.e05348

Experimental and theoretical studies on bond behavior between BFRP bars and HFRC under dynamic load

Ming Zhou
, Huayi Wang^*
, Jia He^*
, Zhiyi Tang
, Bingyan Wei

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

1 Citation (Scopus)

1 Downloads (CityUHK Scholars)

Abstract

Due to its excellent crack resistance, hybrid fiber-reinforced concrete (HFRC) has begun to be practically applied in engineering. However, the bond behavior between HFRC and the novel corrosion-resistant fiber-reinforced polymer materials under dynamic loading conditions remains limited. To address this issue, this study fabricated 60 pull-out specimens to investigate the interface between basalt fiber-reinforced polymer (BFRP) bars and concrete. Using an MTS testing system, an in-depth study was conducted on the dynamic bond behavior at the interface between BFRP bars and HFRC under four different loading rates (3E-1 s⁻¹、3E-2 s⁻¹、3E-3 s⁻¹、3E-5 s⁻¹). The research focused on analyzing the impacts of hybrid fiber content and loading rate on the bond performance. By observing the failure modes of specimens under different strain rates and combining with the elastic calculation theory, an improved dynamic bond stress calculation model was deduced, and this model was corrected according to the experimental results. Based on the experimental results, the model was revised. The test results show that the interfacial bond performance between BFRP reinforcement and HFRC is sensitive to the loading rate. When the loading rate (Formula presented), it can be observed that the residual stress-strain development during the slip process of the reinforcement in HFRC exhibits a triangular function shape fluctuation, with its fluctuation period related to the rib spacing. At this time, the failure mode is characterized by the interfacial bond failure between the surface layer of the reinforcement and HFRC. However, when (Formula presented), the development of residual stress is not significant, and the reinforcement rapidly detaches from HFRC, with the failure mode shifting to the destruction caused by the compression of concrete on the resin surface of the reinforcement. © 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license. http://creativecommons.org/licenses/by/4.0/

Original language	English
Article number	e05348
Journal	Case Studies in Construction Materials
Volume	23
Online published	24 Sept 2025
DOIs	https://doi.org/10.1016/j.cscm.2025.e05348
Publication status	Published - Dec 2025
Externally published	Yes

Funding

The authors may wish to express their sincere appreciation for the financial support provided by Science and Technology Project of the Department of Transportation of Hubei Province (No. 2022–11–2–8), National Natural Science Foundation of China (No. 51178361), the Fundamental Research Funds for the Central Universities (No.2023-vb-009)( No.2024-JL-024).

Research Keywords

BFRP bar
Bond stress-slip relationship
Dynamic loading
Polypropylene and steel fiber-reinforced concrete
Strain rate effect

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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@article{1197db04a7aa493d899f3183a0f084ad,

title = "Experimental and theoretical studies on bond behavior between BFRP bars and HFRC under dynamic load",

abstract = "Due to its excellent crack resistance, hybrid fiber-reinforced concrete (HFRC) has begun to be practically applied in engineering. However, the bond behavior between HFRC and the novel corrosion-resistant fiber-reinforced polymer materials under dynamic loading conditions remains limited. To address this issue, this study fabricated 60 pull-out specimens to investigate the interface between basalt fiber-reinforced polymer (BFRP) bars and concrete. Using an MTS testing system, an in-depth study was conducted on the dynamic bond behavior at the interface between BFRP bars and HFRC under four different loading rates (3E-1 s−1、3E-2 s−1、3E-3 s−1、3E-5 s−1). The research focused on analyzing the impacts of hybrid fiber content and loading rate on the bond performance. By observing the failure modes of specimens under different strain rates and combining with the elastic calculation theory, an improved dynamic bond stress calculation model was deduced, and this model was corrected according to the experimental results. Based on the experimental results, the model was revised. The test results show that the interfacial bond performance between BFRP reinforcement and HFRC is sensitive to the loading rate. When the loading rate (Formula presented), it can be observed that the residual stress-strain development during the slip process of the reinforcement in HFRC exhibits a triangular function shape fluctuation, with its fluctuation period related to the rib spacing. At this time, the failure mode is characterized by the interfacial bond failure between the surface layer of the reinforcement and HFRC. However, when (Formula presented), the development of residual stress is not significant, and the reinforcement rapidly detaches from HFRC, with the failure mode shifting to the destruction caused by the compression of concrete on the resin surface of the reinforcement. {\textcopyright} 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license. http://creativecommons.org/licenses/by/4.0/",

keywords = "BFRP bar, Bond stress-slip relationship, Dynamic loading, Polypropylene and steel fiber-reinforced concrete, Strain rate effect",

author = "Ming Zhou and Huayi Wang and Jia He and Zhiyi Tang and Bingyan Wei",

year = "2025",

month = dec,

doi = "10.1016/j.cscm.2025.e05348",

language = "English",

volume = "23",

journal = "Case Studies in Construction Materials",

issn = "2214-5095",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Experimental and theoretical studies on bond behavior between BFRP bars and HFRC under dynamic load

AU - Zhou, Ming

AU - Wang, Huayi

AU - He, Jia

AU - Tang, Zhiyi

AU - Wei, Bingyan

PY - 2025/12

Y1 - 2025/12

N2 - Due to its excellent crack resistance, hybrid fiber-reinforced concrete (HFRC) has begun to be practically applied in engineering. However, the bond behavior between HFRC and the novel corrosion-resistant fiber-reinforced polymer materials under dynamic loading conditions remains limited. To address this issue, this study fabricated 60 pull-out specimens to investigate the interface between basalt fiber-reinforced polymer (BFRP) bars and concrete. Using an MTS testing system, an in-depth study was conducted on the dynamic bond behavior at the interface between BFRP bars and HFRC under four different loading rates (3E-1 s−1、3E-2 s−1、3E-3 s−1、3E-5 s−1). The research focused on analyzing the impacts of hybrid fiber content and loading rate on the bond performance. By observing the failure modes of specimens under different strain rates and combining with the elastic calculation theory, an improved dynamic bond stress calculation model was deduced, and this model was corrected according to the experimental results. Based on the experimental results, the model was revised. The test results show that the interfacial bond performance between BFRP reinforcement and HFRC is sensitive to the loading rate. When the loading rate (Formula presented), it can be observed that the residual stress-strain development during the slip process of the reinforcement in HFRC exhibits a triangular function shape fluctuation, with its fluctuation period related to the rib spacing. At this time, the failure mode is characterized by the interfacial bond failure between the surface layer of the reinforcement and HFRC. However, when (Formula presented), the development of residual stress is not significant, and the reinforcement rapidly detaches from HFRC, with the failure mode shifting to the destruction caused by the compression of concrete on the resin surface of the reinforcement. © 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license. http://creativecommons.org/licenses/by/4.0/

AB - Due to its excellent crack resistance, hybrid fiber-reinforced concrete (HFRC) has begun to be practically applied in engineering. However, the bond behavior between HFRC and the novel corrosion-resistant fiber-reinforced polymer materials under dynamic loading conditions remains limited. To address this issue, this study fabricated 60 pull-out specimens to investigate the interface between basalt fiber-reinforced polymer (BFRP) bars and concrete. Using an MTS testing system, an in-depth study was conducted on the dynamic bond behavior at the interface between BFRP bars and HFRC under four different loading rates (3E-1 s−1、3E-2 s−1、3E-3 s−1、3E-5 s−1). The research focused on analyzing the impacts of hybrid fiber content and loading rate on the bond performance. By observing the failure modes of specimens under different strain rates and combining with the elastic calculation theory, an improved dynamic bond stress calculation model was deduced, and this model was corrected according to the experimental results. Based on the experimental results, the model was revised. The test results show that the interfacial bond performance between BFRP reinforcement and HFRC is sensitive to the loading rate. When the loading rate (Formula presented), it can be observed that the residual stress-strain development during the slip process of the reinforcement in HFRC exhibits a triangular function shape fluctuation, with its fluctuation period related to the rib spacing. At this time, the failure mode is characterized by the interfacial bond failure between the surface layer of the reinforcement and HFRC. However, when (Formula presented), the development of residual stress is not significant, and the reinforcement rapidly detaches from HFRC, with the failure mode shifting to the destruction caused by the compression of concrete on the resin surface of the reinforcement. © 2025 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license. http://creativecommons.org/licenses/by/4.0/

KW - BFRP bar

KW - Bond stress-slip relationship

KW - Dynamic loading

KW - Polypropylene and steel fiber-reinforced concrete

KW - Strain rate effect

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-105018299976&origin=recordpage

U2 - 10.1016/j.cscm.2025.e05348

DO - 10.1016/j.cscm.2025.e05348

M3 - RGC 21 - Publication in refereed journal

SN - 2214-5095

VL - 23

JO - Case Studies in Construction Materials

JF - Case Studies in Construction Materials

M1 - e05348

ER -

Experimental and theoretical studies on bond behavior between BFRP bars and HFRC under dynamic load

Abstract

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Research Keywords

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