Document Type : Original Article
Authors
1
Kafrelsheikh University, Kafrelsheikh, Egypt
2
Faculty of Engineering Kafrelsheikh University
3
civil Engineering, Faculty of Engineering Kafrelsheikh University
4
Kafrelsheikh Mechanical Engineering, Faculty of Engineering
10.21608/jctae.2025.384479.1053
Abstract
This research review presents a comprehensive examination of recent advancements in strengthening techniques for reinforced concrete (RC) slabs, with a focus on enhancing structural performance under critical conditions such as punching shear, flexural loads, thermal exposure, corrosion, and impact. The studies analyzed explore both traditional and innovative materials and configurations, including externally bonded aluminum sheets, embedded aluminum sections, CFRP and GFRP composites, textile-reinforced mortar (TRM), strain-hardening cementitious composites (SHCC), ferrocement strips, and ultra-high-performance concrete (UHPC). Experimental investigations across the reviewed papers reveal that these strengthening strategies significantly improve load-carrying capacity, ductility, energy absorption, and stiffness, with some configurations restoring or exceeding original structural performance. Special attention is given to slabs with service openings, fire-damaged concrete, and blast or projectile loading, where hybrid systems such as NSM-CFRP ropes and UHPC overlays proved especially effective. Analytical and finite element models validated these results, supporting their application in both retrofitting and new construction. Collectively, the studies offer practical insights for engineers seeking to extend service life, enhance safety, and address deterioration in RC slabs, providing a valuable foundation for future structural strengthening initiatives.
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