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Two-Way Shear Resistance of FRP Reinforced-Concrete Slabs: Data and a Comparative Study
Fahid Aslam1, Mohamed AbdelMongy2,3, Majed Alzara2
1Department of civil Engineering, College of Engineering in Al-kharj, Prince Sattam bin Abdulaziz University, Al-Kharj 16278, Saudi Arabia.
Polymers
|September 23, 2022
Summary
This study evaluates concrete slabs reinforced with fiber-reinforced polymers (FRP), comparing 21 models to predict shear strength. The EE-b model shows the highest consistency for FRP-reinforced concrete slabs.
Area of Science:
- Civil Engineering
- Materials Science
Background:
- Fiber-reinforced polymers (FRP) offer an alternative to steel reinforcement in concrete structures.
- Understanding the shear strength of FRP-reinforced concrete slabs is crucial for structural integrity and design.
- Existing models for predicting shear strength vary in their accuracy and applicability.
Purpose of the Study:
- To investigate and compare the two-way shear strength of concrete slabs utilizing FRP reinforcements.
- To evaluate the performance of 21 existing strength models against experimental data.
- To identify key parameters influencing shear strength and suggest areas for future research.
Main Methods:
- A comprehensive literature review was conducted, collecting data from 248 concrete slabs with FRP reinforcements across 50 studies.
- Twenty-one distinct shear strength models were analyzed and compared.
- Behavior trends and correlations between shear strength and various parameters were identified.
Main Results:
- The American Concrete Institute (ACI) model demonstrated the least consistency due to its exclusion of critical factors like size and dowel action.
- The EE-b model exhibited the highest consistency, accurately reflecting the influence of size effect, concrete compressive strength, depth-to-control perimeter ratio, and shear span-to-depth ratio.
- Experimental data confirmed the EE-b model's superior performance, attributed to its foundation in observed behavior and mechanical principles.
Conclusions:
- The EE-b model is recommended for predicting the two-way shear strength of FRP-reinforced concrete slabs due to its high consistency and mechanical basis.
- The ACI model requires revision to incorporate additional parameters for improved accuracy.
- Further research should focus on refining existing models and developing new ones that account for all significant influencing factors.
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