Experimental Research on Bond Behavior Between GFRP Bars and Stirrups-Confined Concrete
Autor: | Li Xinping, Zhao Li, Jianwei Tu, Kui Gao, Jiarui Zhang |
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Rok vydání: | 2019 |
Předmět: |
Materials science
Bar (music) 020101 civil engineering 02 engineering and technology Slip (materials science) lcsh:Technology pullout tests 0201 civil engineering lcsh:Chemistry Stress (mechanics) stirrups-confined concrete bond behavior General Materials Science Composite material Ductility lcsh:QH301-705.5 Instrumentation Fluid Flow and Transfer Processes GFRP bar lcsh:T Bond strength Process Chemistry and Technology Bond General Engineering bond stress-slip relationship Fibre-reinforced plastic 021001 nanoscience & nanotechnology lcsh:QC1-999 Experimental research Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:Physics |
Zdroj: | Applied Sciences, Vol 9, Iss 7, p 1340 (2019) Applied Sciences Volume 9 Issue 7 |
ISSN: | 2076-3417 |
Popis: | This paper presents the results of a series of pullout tests that were performed on Glass-fiber-reinforced polymer (GFRP) bars embedded in concrete, while providing a detailed report on the influence of various variables that impinge upon bond behavior, such as the surface characteristics and diameter of the bars, concrete strength, as well as the confined effect of stirrups. The Bertero-Popov-Eligehausen (BPE) and Cosenza-Manfredi-Realfonzo (CMR) models analyzed the bond stress (&tau )&ndash slip (s) relationship between GFRP bar and stirrups-confined concrete. The tests results indicate that when the bond failure interface only occurs on the surface of a GFRP bar, the bond strength is not dependent upon the concrete strength. Moreover, the results indicate that in comparison to specimens without stirrups, their stirrup-containing counterparts are more prone to pullout failure with greater ductility and higher bond strength and corresponding slip. The BPE and CMR models are able to investigate the &tau s relationship between GFRP bars and the stirrups-confined concrete with accuracy. With the experimental data, the specific parameters in the models classified by surface characteristics have been suggested. |
Databáze: | OpenAIRE |
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