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Volume Title: ICASGE2023

DOI: ICASGE-RCS

¹Rania Sera ; ²Ahmed Hamoda; ³Boshra Eltaly; ³Boshra Eltaly

¹Eng. M.D. Student, Faculty of Engineering, Menofia University, Egypt

²Associate Professor, Faculty of Engineering, Kafrelsheikh University, Egypt

³Professor, Faculty of Engineering, Menofia University, Egypt

RC broken Slabs (BSs) are very essential elemnt in RC strcture that exists in all multistory reinforced concrete structures.This numerical investigation presents a Finite Element Modeling (FEM) for these BSs. To compare and study the effect of additional UHPC layer and Near Surface Mounted (NSM) steel bars as strengthening strategy on the structural performance of RC BSs under static loadings, the numerical analysis is implemented based on ABAQUS and validated well with the published previous experimental results, as will reported in the introduction A parametric study and a numerical validation for full-scale RC BSs strengthened with two styrengthening Scenario were prepared and examined by 12 slabs divided into three groups. The main studied variables were: number/layout of NSM steel bars and the thickness of UHPC layer. All structural behaviour was agumnted by the NSM steel bars numbers were increased.The cracking and ultimate loads were improved by increasing the layer thicknesses by about 120% and 270%, respectively.Two slabs were validated against two counterparts observed from literature study.

Broken slabs; UHPC; Sustainable strengthening material; Strengthening techniques; Finite Element Modeling

Reinforced Concrete Structures (RCS)