CoatingsPro Magazine

MAY 2018

CoatingsPro offers an in-depth look at coatings based on case studies, successful business operation, new products, industry news, and the safe and profitable use of coatings and equipment.

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Page 53 of 92

COATINGSPRO MAY 2018 53 spray applied using a WIWA airless sprayer. e Zinc Clad III Organic Zinc-Rich Primer was specifi- cally designed for application in marine environments, such as bridges and drilling rigs, where there is exposure to the elements and a great deal of moisture. e crew applied the primer to an average of 3 mils (76.2 microns). Two coats of the primer were applied in some areas where a lot of blasting was required to properly prepare the steel. For the mid-coat, the crew applied Macropoxy 646 Fast Cure Epoxy. is high solids, high-build, fast-drying, polyam- ide epoxy is designed to protect steel in industrial exposures, especially in marine environments. e high solids content also ensures adequate protection of sharp edges, corners, and welds. e Southern Road & Bridge team first applied a stripe coat to the steel, including eyebar chains, towers, floor beams, and girders, and then a full coat was applied at an average of 6‒8 mils (152.4‒203.2 microns). It was then time for the application of the Acrolon 218 HS Acrylic Polyurethane, a polyester modified, aliphatic, acrylic polyurethane that is fast drying and provides color and gloss retention for exterior exposure. e crew applied this polyure- thane finish coat at an average thickness of approximately 4 mils (101.6 microns). Some areas of steel received slightly different coating appli- cations. e cells on the inside of the stiffening girder received a coat of Zinc Clad III Organic Zinc-Rich Primer and two separate coats of Macropoxy 646 Fast Cure Epoxy. "However, when we came back for the second mobilization, we found that right in the center of the stiffening girder, rust was bleeding through the plates. To address these areas, we used brushes and rollers to spot coat these areas with Epoxy Mastic Aluminum II at a thickness of approximately 2‒3 mils [50.8‒76.2 microns]," explained Skaroulis. Epoxy Mastic Aluminum II is a high solids, aluminum-filled, polyamine-bisphenol epoxy coating formu- lated to provide a high-performance chemical and moisture barrier. According to Skaroulis, these interior cells were closed by custom-designed steel plates so a finish coat was not necessary. e handrails above the bridge deck not only received a different coating system, but they were also one of the only areas not abrasive blasted prior to coating application. e handrails were pressure washed using a Bearcat hot water, Andy Warhol Bridge VENDOR TEAM 3M Safety equipment manufacturer 3M Center St. Paul, MN 55144 (800) 364-3577 ARS Recycling Systems LLC Equipment manufacturer 4000 McCartney Rd. Lowellville, OH 44436 (330) 536-8210 Bullard Safety equipment manufacturer 1898 Safety Way Cynthiana, KY 41031 (877) 285-5273 Eagle Industries Equipment manufacturer 5531 River Rd. New Orleans, LA 70123 (800) 266-8246 ECHO Bear Cat Equipment manufacturer 237 12th St. NW West Fargo, ND 58078 (701) 282-5520 Nova Respirators by RPB Safety Safety equipment manufacturer 2807 Samoset Rd. Royal Oak, MI 48073 (866) 494-4599 Safespan Safety equipment manufacturer 252 Fillmore Ave. Tonawanda, NY 14150 (716) 694-1100 The Sherwin-Williams Company Coatings manufacturer 101 W Prospect St. Cleveland, OH 44115 (800) 474-3794 Weiler Equipment manufacturer One Weiler Dr. Cresco, PA 18326 (570) 595-7495 WIWA LP Equipment manufacturer 107 N Main St. P.O. Box 398 Alger, OH 45812 (419) 757-0141 Re ad e r In qui r y at co ati n g sp ro m a m /i n q0518

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