Use FreezBan multipurpose admixtures with portland cement/lime mortar, prepared masonry mortars, and non-reinforced concrete. This formulation combines an effective and time-proven chemical accelerator (calcium chloride) with a powerful wetting agent. A chloride-free version will not promote corrosion when used in concrete in contact with reinforcing steel, door and window jams, and other metallic building materials. ChemMasters Corporation.