Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static Loading
There is an interesting potential for the use of GFRP-pultruded profiles in hybrid GFRP-concrete structural elements, either for new constructions or for the rehabilitation of existing structures. This paper provides experimental and numerical investigations on the flexural performance of reinforced...
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| Format: | Article |
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MDPI AG
2022-06-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/13/4519 |
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| author | Enas M. Mahmood Abbas A. Allawi Ayman El-Zohairy |
| author_facet | Enas M. Mahmood Abbas A. Allawi Ayman El-Zohairy |
| author_sort | Enas M. Mahmood |
| collection | DOAJ |
| description | There is an interesting potential for the use of GFRP-pultruded profiles in hybrid GFRP-concrete structural elements, either for new constructions or for the rehabilitation of existing structures. This paper provides experimental and numerical investigations on the flexural performance of reinforced concrete (RC) specimens composite with encased pultruded GFRP I-sections. Five simply supported composite beams were tested in this experimental program to investigate the static flexural behavior of encased GFRP beams with high-strength concrete. Besides, the effect of using shear studs to improve the composite interaction between the GFRP beam and concrete as well as the effect of web stiffeners of GFRP were explored. Encasing the GFRP beam with concrete enhanced the peak load by 58.3%. Using shear connectors, web stiffeners, and both improved the peak loads by 100.6%, 97.3%, and 130.8%, respectively. The GFRP beams improved ductility by 21.6% relative to the reference one without the GFRP beam. Moreover, the shear connectors, web stiffeners, and both improved ductility by 185.5%, 119.8%, and 128.4%, respectively, relative to the encased reference beam. Furthermore, a non-linear Finite Element (FE) model was developed and validated by the experimental results to conduct a parametric study to investigate the effect of the concrete compressive strength and tensile strength of the GFRP beam. The developed FE model provided good agreement with the experimental results regarding deformations and damaged patterns. |
| first_indexed | 2024-03-09T10:27:05Z |
| format | Article |
| id | doaj.art-4cd8b835c9554367895408835fd5f176 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T10:27:05Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-4cd8b835c9554367895408835fd5f1762023-12-01T21:34:13ZengMDPI AGMaterials1996-19442022-06-011513451910.3390/ma15134519Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static LoadingEnas M. Mahmood0Abbas A. Allawi1Ayman El-Zohairy2Department of Civil Engineering, University of Baghdad, Baghdad 17001, IraqDepartment of Civil Engineering, University of Baghdad, Baghdad 17001, IraqDepartment of Engineering and Technology, Texas A&M University-Commerce, Commerce, TX 75429, USAThere is an interesting potential for the use of GFRP-pultruded profiles in hybrid GFRP-concrete structural elements, either for new constructions or for the rehabilitation of existing structures. This paper provides experimental and numerical investigations on the flexural performance of reinforced concrete (RC) specimens composite with encased pultruded GFRP I-sections. Five simply supported composite beams were tested in this experimental program to investigate the static flexural behavior of encased GFRP beams with high-strength concrete. Besides, the effect of using shear studs to improve the composite interaction between the GFRP beam and concrete as well as the effect of web stiffeners of GFRP were explored. Encasing the GFRP beam with concrete enhanced the peak load by 58.3%. Using shear connectors, web stiffeners, and both improved the peak loads by 100.6%, 97.3%, and 130.8%, respectively. The GFRP beams improved ductility by 21.6% relative to the reference one without the GFRP beam. Moreover, the shear connectors, web stiffeners, and both improved ductility by 185.5%, 119.8%, and 128.4%, respectively, relative to the encased reference beam. Furthermore, a non-linear Finite Element (FE) model was developed and validated by the experimental results to conduct a parametric study to investigate the effect of the concrete compressive strength and tensile strength of the GFRP beam. The developed FE model provided good agreement with the experimental results regarding deformations and damaged patterns.https://www.mdpi.com/1996-1944/15/13/4519encased GFRP beamhigh-strength concretestrainsdeformationFE analysisparametric study |
| spellingShingle | Enas M. Mahmood Abbas A. Allawi Ayman El-Zohairy Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static Loading Materials encased GFRP beam high-strength concrete strains deformation FE analysis parametric study |
| title | Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static Loading |
| title_full | Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static Loading |
| title_fullStr | Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static Loading |
| title_full_unstemmed | Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static Loading |
| title_short | Flexural Performance of Encased Pultruded GFRP I-Beam with High Strength Concrete under Static Loading |
| title_sort | flexural performance of encased pultruded gfrp i beam with high strength concrete under static loading |
| topic | encased GFRP beam high-strength concrete strains deformation FE analysis parametric study |
| url | https://www.mdpi.com/1996-1944/15/13/4519 |
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