The behavior of one-way reinforced void concrete slabs with different types of reinforcement and strengthened with textile-reinforced mortar (TRM) under the influence of static load Available to Purchase

This study aims to investigate the effect of changing the type of reinforcement used in the behavior of one-way void concrete slabs before and after strengthening them with Textile-Reinforced Mortar (TRM) under the influence of uniform distributed static loads. The study includes casting 6 specimens of slabs with dimensions of (40001000180) mm. These slabs have voids with a ratio of 21.8% and are divided into two groups, each containing three slabs. One of these groups is strengthening with TRM, while the other three slabs in the other group are unstrengthened. Each specimen in the same group is reinforced with one of the different types of reinforcement, including normal steel reinforcement, GFRP bar reinforcement, and hybrid reinforcement with both types. The tests revealed that by changing the type of reinforcement, the ultimate load value decreased by 61.7% when changing from normal steel reinforcement to GFRP bar reinforcement. This decrease percentage was reduced to 7.4% when using the hybrid reinforcement. Strengthening the slabs with TRM significantly increases the ultimate load value, where its value increased for the strengthened slabs by (24.3%, 15.1%, and 21.9%) compared to their unstrengthened counterparts. Meanwhile, the corresponding deflection values for the ultimate load decreased for the same slabs by (13.1%, 12%, and 3.9%) compared to their unstrengthened counterparts.