Estudio del comportamiento en zonas sísmicas del hormigón pretensado con refuerzo de fibras = Study of the behavior in seismic zones of reinforced prestressed concrete

Prestressed concrete reinforced with fibers, simultaneously presents the advantages of prestressed concrete and reinforced with fibers. It achieves a high performance material in terms of its toughness, ductility and tensile strength, as well as to improve the cracking and deformation characteristics of the structural elements of the concrete caused by seismic stresses. In this work the mechanical behavior of a prestressed concrete reinforced with steel and polyamide fibers and its ability to withstand the large forces of inertia caused by seismic stresses has been studied. For a comparative evaluation, cyclic cutting tests are presented between structural walls constructed with conventional concrete and those reinforced with fibers using hysteresis models. The results show the variation of concrete response with time, the existing difference with traditional concrete and the feasibility of using fibers. Finding that the addition of fibers in conventional reinforced concrete can improve the structural and functional performances of concrete structures related to seismic actions, in turn steel fibers are more effective in improving the PCCV cutting performance than fibers of polyamide.