ARDEX ERM™ Exterior Ramp Mortar is a trowel-grade, polymer-modified Portland cement-based, structural repair mortar for deteriorated exterior and interior concrete above, on or below grade. It can be used at depths ranging from 1/4 - 2” (6 mm - 5.1 cm) neat and up to 8’’ (20.3 cm) when extended with aggregate. ARDEX ERM has a corrosion inhibitor built-in to protect reinforcing steel. It also is easy to apply and readily bonds to concrete. The resulting patch has low shrinkage, resists delamination and produces a surface suitable for normal commercial, institutional and multi-unit residential traffic. Typical applications include sidewalks, plazas, walkways, driveways, parking garages and balconies.