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Experimental Investigation on the Interfacial Bond Failure Between FRP Bars and Sea Sand Concrete
https://orcid.org/http://orcid.org/0009-0007-6699-5310
https://orcid.org/http://orcid.org/0000-0002-0855-1531
https://orcid.org/http://orcid.org/0000-0002-8256-2482
The interface between the fiber-reinforced polymer (FRP) bars and sea sand concrete (SSC) is to connect the two materials, and the interfacial bonding performance (IBP) is crucial for the load-bearing capacity of structural members. To investigate the impacts of different factors, including bar type, bar diameter, and concrete strength, on the IBP between FRP bars and SSC, pull-out tests are performed on twenty-seven specimens.Based on the thick-walled cylinder theory, a semi-empirical model of interfacial ultimate bond strength at ambient temperature was proposed. The results show that the early interfacial bond strength of FRP bars-SSC specimens is slightly higher than that of steel rebar-SSC specimens. The profile of ribs has a greater impact on the IBP than the bar type and bar diameter. During the pull-out process, the surface of FRP bars is severely worn, and some fibers on the bar surface undergo brittle fracture, resulting in a reduction of interfacial bond strength. The interfacial bond strength estimated by the proposed model is in good agreement with the experimental results.
Experimental Investigation on the Interfacial Bond Failure Between FRP Bars and Sea Sand Concrete
https://orcid.org/http://orcid.org/0009-0007-6699-5310
https://orcid.org/http://orcid.org/0000-0002-0855-1531
https://orcid.org/http://orcid.org/0000-0002-8256-2482
The interface between the fiber-reinforced polymer (FRP) bars and sea sand concrete (SSC) is to connect the two materials, and the interfacial bonding performance (IBP) is crucial for the load-bearing capacity of structural members. To investigate the impacts of different factors, including bar type, bar diameter, and concrete strength, on the IBP between FRP bars and SSC, pull-out tests are performed on twenty-seven specimens.Based on the thick-walled cylinder theory, a semi-empirical model of interfacial ultimate bond strength at ambient temperature was proposed. The results show that the early interfacial bond strength of FRP bars-SSC specimens is slightly higher than that of steel rebar-SSC specimens. The profile of ribs has a greater impact on the IBP than the bar type and bar diameter. During the pull-out process, the surface of FRP bars is severely worn, and some fibers on the bar surface undergo brittle fracture, resulting in a reduction of interfacial bond strength. The interfacial bond strength estimated by the proposed model is in good agreement with the experimental results.
Experimental Investigation on the Interfacial Bond Failure Between FRP Bars and Sea Sand Concrete
https://orcid.org/http://orcid.org/0009-0007-6699-5310
https://orcid.org/http://orcid.org/0000-0002-0855-1531
https://orcid.org/http://orcid.org/0000-0002-8256-2482
The interface between the fiber-reinforced polymer (FRP) bars and sea sand concrete (SSC) is to connect the two materials, and the interfacial bonding performance (IBP) is crucial for the load-bearing capacity of structural members. To investigate the impacts of different factors, including bar type, bar diameter, and concrete strength, on the IBP between FRP bars and SSC, pull-out tests are performed on twenty-seven specimens.Based on the thick-walled cylinder theory, a semi-empirical model of interfacial ultimate bond strength at ambient temperature was proposed. The results show that the early interfacial bond strength of FRP bars-SSC specimens is slightly higher than that of steel rebar-SSC specimens. The profile of ribs has a greater impact on the IBP than the bar type and bar diameter. During the pull-out process, the surface of FRP bars is severely worn, and some fibers on the bar surface undergo brittle fracture, resulting in a reduction of interfacial bond strength. The interfacial bond strength estimated by the proposed model is in good agreement with the experimental results.
Experimental Investigation on the Interfacial Bond Failure Between FRP Bars and Sea Sand Concrete
Lecture Notes in Civil Engineering
Guo, Wei (editor) / Qian, Kai (editor) / Tang, Honggang (editor) / Gong, Lei (editor) / Yang, Ben (author) / Zhou, Chunheng (author) / Zhang, Zihua (author)
International Conference on Green Building, Civil Engineering and Smart City ; 2023 ; Guiyang, China
2024-02-02
10 pages
Article/Chapter (Book)
Electronic Resource
English
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