Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beams

Abstract Fiber-reinforced-polymers (FRPs) have gained popularity as a substitute for conventional steel bars in reinforced concrete, yet there remain specific knowledge gaps in the behavior of lap-spliced glass and basalt bars. This research addresses these gaps by investigating the behavior of thes...

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Main Authors: Hala Mamdouh, Ahmed Hassan, Nasr Zenhom, Amr Ali, O. A. Mohamed, Amany Salman
Format: Article
Language:English
Published: Springer 2025-02-01
Series:Discover Applied Sciences
Subjects:
Online Access:https://doi.org/10.1007/s42452-025-06507-2
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author Hala Mamdouh
Ahmed Hassan
Nasr Zenhom
Amr Ali
O. A. Mohamed
Amany Salman
author_facet Hala Mamdouh
Ahmed Hassan
Nasr Zenhom
Amr Ali
O. A. Mohamed
Amany Salman
author_sort Hala Mamdouh
collection DOAJ
description Abstract Fiber-reinforced-polymers (FRPs) have gained popularity as a substitute for conventional steel bars in reinforced concrete, yet there remain specific knowledge gaps in the behavior of lap-spliced glass and basalt bars. This research addresses these gaps by investigating the behavior of these spliced FRP bars both experimentally and numerically using ANSYS. Twelve reinforced concrete beams were tested, divided into three groups with spliced steel and FRP bars, to analyze the effects of bar type, splice length, and transverse spacing. Key findings indicate that longer splice lengths significantly improve beam behavior, and non-contact splices exhibit better flexural resistance. Applying a modification factor of 1.3 to the development length of FRP bars notably enhances serviceability criteria, load capacity, deflection, crack pattern, and bond strength of non-contact splice specimens. This study contributes to the existing body of knowledge by providing specific insights and practical recommendations for the improved use of spliced FRP bars in concrete structures.
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institution Kabale University
issn 3004-9261
language English
publishDate 2025-02-01
publisher Springer
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series Discover Applied Sciences
spelling doaj-art-085172028e424d438286b185879bab252025-02-09T12:49:53ZengSpringerDiscover Applied Sciences3004-92612025-02-017212710.1007/s42452-025-06507-2Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beamsHala Mamdouh0Ahmed Hassan1Nasr Zenhom2Amr Ali3O. A. Mohamed4Amany Salman5Department of Civil Engineering, Helwan UniversityDepartment of Civil Engineering, Beni-Suef UniversityDepartment of Civil Engineering, Helwan UniversityDepartment of Civil Engineering, Helwan UniversityEnvironmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef UniversityDepartment of Civil Engineering, Helwan UniversityAbstract Fiber-reinforced-polymers (FRPs) have gained popularity as a substitute for conventional steel bars in reinforced concrete, yet there remain specific knowledge gaps in the behavior of lap-spliced glass and basalt bars. This research addresses these gaps by investigating the behavior of these spliced FRP bars both experimentally and numerically using ANSYS. Twelve reinforced concrete beams were tested, divided into three groups with spliced steel and FRP bars, to analyze the effects of bar type, splice length, and transverse spacing. Key findings indicate that longer splice lengths significantly improve beam behavior, and non-contact splices exhibit better flexural resistance. Applying a modification factor of 1.3 to the development length of FRP bars notably enhances serviceability criteria, load capacity, deflection, crack pattern, and bond strength of non-contact splice specimens. This study contributes to the existing body of knowledge by providing specific insights and practical recommendations for the improved use of spliced FRP bars in concrete structures.https://doi.org/10.1007/s42452-025-06507-2Lap splicesBasalt barsGlass barContact and non-contact splicesANSYS
spellingShingle Hala Mamdouh
Ahmed Hassan
Nasr Zenhom
Amr Ali
O. A. Mohamed
Amany Salman
Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beams
Discover Applied Sciences
Lap splices
Basalt bars
Glass bar
Contact and non-contact splices
ANSYS
title Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beams
title_full Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beams
title_fullStr Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beams
title_full_unstemmed Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beams
title_short Splicing behaviour of GFRP, BFRP, and steel bars in reinforced concrete beams
title_sort splicing behaviour of gfrp bfrp and steel bars in reinforced concrete beams
topic Lap splices
Basalt bars
Glass bar
Contact and non-contact splices
ANSYS
url https://doi.org/10.1007/s42452-025-06507-2
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