Propiedades del hormigón reciclado para el uso como soleras de hormigón en pavimentos industriales=Properties of recycled concrete to use as concrete slabs in industrial pavements

The present study analyzes the tensional state of different thin plates supported on elastic terrain using finite element models for different types of recycled and first-use concretes, different values of loads and ground support conditions, concluding that the tensions that are obtained in recycled concretes are approximately 4.5% lower than in concrete made with aggregates of first use, in any of the cases analyzed. With the data obtained for the tensions, graphs of sizing of the minimum thickness necessary in Ultimate Limit State of flexion have been drawn up. These graphs show lower thicknesses required in the case of recycled concretes, although the possible reductions do not exceed 0.5 cm for the loads analyzed. Another aspect to be taken into account is that, given that the fatigue depletion process in concrete depends mainly on the maximum tension reached in the concrete with respect to ist resistant capacity and not only the tension oscillation, the recycled concrete allows to extend the useful life of the structure.