The effect of non-removable void generators on the strength of monolithic reinforced concrete floor slabs clamped along the contour

Abstract

The article presents the results of a numerical experiment to determine the effect of non-removable void generators on the strength of monolithic reinforced concrete floor slabs clamped along the contour. The experimental samples are made in the form of spatial models using volumetric finite element models in the LIRA-CAD software package. The tests were carried out on 4 series of samples, differing in terms of dimensions and reinforcement. Detailed descriptions of the dependencies used and the laws of deformation of materials during the construction of models are given. The values of compressive stresses in concrete and reinforcement, as well as tensile stresses in reinforcement obtained as a result of tests, were subjected to comparative analysis. Based on the conducted experiment, it was found that the use of non-removable voids in a monolithic reinforced concrete slab does not reduce its strength, while reducing concrete consumption by 18.3-23.1%.