How To Apply MasterEmaco T 545 Repair Mortar Concrete must be structurally sound and fully cured. Surface should be prepared following current ICRI Guideline No. 310.2R surface preparation guide. Add 4 pints (1.9 L) of potable water into a clean mixing container Gradually sift in powder, 1/3 of the bag at a time, while mixing continuously at a slow speed Mix material for 90 seconds to ensure a uniform, lump-free consistency Work material firmly into the bottom and sides of patch. Avoid feather edging. Placement time is approximately 5 minutes Level MasterEmaco T 545 and screed to the elevation of surrounding concrete. Minimal finishing is required. No curing is required. Protect from rain immediately after placing. Refer to the MasterEmaco T 545 technical data guide for more information.