Prediction of Axial Compressive Strength of Hybrid Reinforced Concrete Columns under Static Loading

Mohamed, Mostafa; Ahmed, Abdel-Rahman; Ahmed, Mohamed; Farghal, Omar A

doi:10.21608/jesaun.2022.149280.1153

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	Prediction of Axial Compressive Strength of Hybrid Reinforced Concrete Columns under Static Loading
Article 1, Volume 51, Issue 1, January and February 2023, Page 1-16 PDF (1.58 MB)
Document Type: Research Paper
DOI: 10.21608/jesaun.2022.149280.1153
View on SCiNiTO
Authors
Mostafa Mohamed ¹; Abdel-Rahman Ahmed²; Mohamed Ahmed²; Omar A Farghal²
¹PhD Graduate student, Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt
²Professor, Civil Engineering Department, Faculty of Engineering, Assiut University, Assiut, Egypt
Abstract
Steel corrosion is thought to be one of the primary causes of the inadequate durability of concrete buildings in the maritime environment. Because of this, adopting Fiber-Reinforced Polymer (FRP) bars in harsh settings has attracted a lot of attention for its appealing mechanical properties as well as to prevent corrosion issues. But because there hasn't been much research in this area, we don't fully understand how fiber-reinforced polymer (FRP) bars behave when they are compressed. This work's goal is to assess the expected axial compressive strength of columns when hybrid reinforcement is used in place of steel reinforcement. Hybrid bars are steel bars surrounded by a cover shell of Glass or Carbon FRP (hybrid-steel) for longitudinal reinforcement and/or transverse reinforcement. 17 column specimens were included in an experimental study program that was created. The specimens were tested to failure with an axial loading condition. The parameters studied were the type of fibers, the percentage of steel in the hybrid reinforcement for longitudinal main reinforcement ρL(0.96, 0.44, and 0.25), the ratio of the web reinforcement (internal ties), the proportion of fiber in the hybrid bars, as well as the columns' cross sections' rectangularity. Based on the data, mathematical models were devised and assessed to forecast the load bearing capability of the column. The findings indicate that hybrid reinforced concrete columns have acceptable levels of dependability index in general.
Keywords
hybrid CFRP-steel; hybrid GFRP-steel; Columns; Compression
Main Subjects
Civil Engineering: structural, Geotechnical, reinforced concrete and steel structures, Surveying, Road and traffic engineering, water resources, Irrigation structures, Environmental and sanitary engineering, Hydraulic, Railway, construction Management.


References
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