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. Specially suited for hot weather applications when extended working time is required. Rapid hardening as defined by ASTM C-928. Epoxy coatings can be applied as early as 6 hrs. On site testing is recommended for verification. Please consult coatings manufacturer for recommendations. Freeze/thaw resistant. Easy to use, labor-saving material. Not gypsum-based. High early strength. Open to foot traffic in 4 hours; to vehicle traffic in 6 hours (at 73°F). Easily applied to clean, sound substrate. Not a vapor barrier.