Hormigones autocompactables reforzados con fibras
Abstract
The incorporation of short fibers dispersed in the matrix of concrete enhances the control of cracks growth and increases the tenacity. It is recognized that fiber reinforced concrete (FRC) is a material of high performance for the manufacture of precast elements, coatings of tunnels, pavements or boards of bridges. Also it is possible to replace or to combine the cross-sectional steel bars with the fiber reinforcement to improve the shear stress capacity and to obtain a more ductile behavior, which is of interest in structural elements of thin soul. Although the steel fibers have been the most used to reinforce concrete, at the present time have been developed structural synthetic fibers that can compete sometimes with the previous ones. The development of high strength FRC and more recently Fiber Reinforced Self-compacting Concrete (FRSCC) give rise to new alternatives of application; the most important being repairs and reinforcements of old structures. This work shows the first experiences developed with the purpose of exploring the elaboration possibilities and properties of FRSCC, the studies were oriented to the evaluation of structural elements of application in road engineering including both steel and synthetic fibers.
