ARDEX ERM™ Exterior Ramp Mortar is a trowel-grade, polymer-modified, Portland cement-based structural repair mortar. It is used in depths ranging from1/4" to 2" neat, and can be extended up to 8" for deeper and full depth repairs of deteriorated exterior and interior concrete above, on or below grade. ARDEX ERM has a corrosion inhibitor built-in to protect reinforcing steel, is easy to apply and readily bonds to concrete. The resulting patch has low shrinkage and resists delamination, producing a surface suitable for commercial, institutional and multi-unit residential traffic. Typical applicactions include sidewalks, plazas, walkways, driveways, parking garages and balconies.