Punching shear behavior for flat slabs with CFRP and openings

This study is devoted to investigate the flexural behavior of geopolymer flat slab that have transverse web openings with CFRP. The shear reinforcement is considered one of the important solutions to increase the resistance of the slabs to the failure of the punching shear and it is also possible through the use of these collars to provide service openings next to the columns. Three molds made of wood were prepared to examine 15 samples of geopolymer concrete under concentrated conditions, Dimensions of section are of total (70*70*7 cm) and Dimensions of column (15*15*15 cm). Three groups of models comprise the models for this research: the first group looks at the impact of the column's location; the second group looks at the impact of an opening next to the column or not; and the third group looks at the impact of CFRP. The findings demonstrated that the presence of transverse web openings affects the general flexural behavior of flat slab geopolymer reinforced concrete as a result of the reduction of concrete within the geopolymer concrete section. CFRP specimens demonstrated superior due to the inherent mechanical properties of the material. Among the various repairing procedures used, the full wrapping technique yielded the best results after the repairs.