Mechanical response of fiber reinforced concrete overlays over asphalt concrete substrate: Experimental results and numerical simulation

摘要

Fiber reinforced concrete overlays are nowadays an alternative for repairing and reinforcing pavements. The contribution of concrete overlays strongly depends on the bond with the substrate. The fibers help sewing contraction joints and eventual cracks and, in this way prevent the propagation of cracks along the substrate-overlay interface. Therefore, the addition of fibers to the overlay allows reducing repair thickness, increasing service life and improving pavements general performance.