Vol 2 - Garney Construction

D. Apply scrub coat of mortar worked into existing substrate surface with a stiffbristled brush. Use of epoxy resin bonding agent is not acceptable.E. Work mortar firmly and quickly into repair area before scrub slurry coatbegins to dry.F. Finish repair mortar to smooth even surface matching adjacent concretesurface.3.06 CURINGA. Prior to curing, apply water fog to repair mortar system in accordance withrepair mortar system manufacturer’s printed instructions.B. Cure in accordance with repair mortar manufacturer’s printed instructions.C. Where permitted by repair mortar manufacturer’s printed instructions,continue water fog curing after repair mortar system application and whencuring will not cause erosion of mortar.D. Continuously water fog cure repair mortar system for a period of 7 days.E. Do not cure using curing compound or membrane, unless method is part ofrepair mortar system manufacturer’s printed instructions and approval isobtained from Engineer.F. Cure intermediate layers of repair mortar in accordance with repair mortarmanufacturer’s printed instructions.G. Where curing compound is permitted by repair mortar system manufacturer,apply curing compound in accordance with Section 03 39 00, ConcreteCuring.3.07 FIELD QUALITY CONTROLA. Sounding for Hollow Areas:1. Light hammer tap repaired areas listening for hollow sound to determineareas that have not properly bonded to substrate concrete.2. Mark hollow areas for removal and replacement.REPAIR OF VERTICAL AND OVERHEADPW/WBG/382059CONCRETE SURFACES AUGUST 15, 201203 01 32 - 10 ©COPYRIGHT 2012 CH2M HILL