Progressive Collapse Resistance of RC Beam–Slab Substructures Made with Rubberized Concrete

Abnormal loads can produce localized damage that eventually cause progressive collapse of the whole reinforced concrete (RC) structure. This might have devastating financial repercussions and numerous severe casualties. Numerical simulation, using finite element method (FEM), consequences abnormal on buildings is thus required to avoid significant expenses associated with testing full-scale save time. In this paper, FEM simulations, ABAQUS software, were employed investigate resistance three-dimensional (3D) beam–slab substructures, considering two mixes, namely: normal (NC) rubberized (RuC) which was made by incorporating crumb rubber at 20% volume replacement for sand. The accuracy dependability validated available experimental test results. Concrete steel material non-linearity considered in FE modelling. numerical study extended include eight new models various specifics (a set parameters) further understanding collapse. Results showed slabs contribute more than a third load resistance, also significantly improves building’s resistance. Moreover, performance RuC specimens excellent catenary stage, develops additional resilience deformation prevent or even mitigate