SikaQuick 2500 is a 1-component, very rapid hardening, early strength gaining, cementitious, patching material for concrete. Where to Use Use on grade, above, and below grade on concrete. Highway overlays and repairs. Structural repair material for concrete roadways, parking structures, bridges, dams and ramps. Full depth patching repairs. Economical patching material for horizontal repairs of concrete and mortar. Coverage: 20 sf/bag at 1/4” thick. Stocked in 50 Ib. bags.