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COATINGSPRO SURFACE PREP 2018 29 unnamed, had the floor area outside of baler B repaired first. By the time they got to baler A's area, the pair had it down pat. Combo Platter Luckily, access to the area wasn't a chore. Because the facility was already used to unloading and loading 53-foot (16.2 m) trailers with the materials, the Geo-Blast crew could use one of the bays, too. A ll they had to do was back their own mobile unit into the bay and open up shop! e unit included a Geo-Blaster 600SA (aka standalone) with a combined 200 feet (61.0 m) of hose. at was made of four 50-foot-long (15.2 m) sections coupled together. Because the blaster didn't have its own water tank, the crew's one-ton (0.9 metric ton) truck also carried a 225-liter (59.4 gallon) water tank and an Atlas Copco X AS375 compressor, which offered 375 CFM (10.6 m³/min.) of diesel. Once they were set up, Geo-Blast's work on baler A included containing the area, vapor blasting, and cleanup. e crew installed poly tarps around electrical controls on the equipment and set up caution tape and cones around the perimeter of the work area. A lthough the surface prep work was done after regular day shift hours (aka 4 p.m.), there could still be other workers in the facility, so the perimeter helped restrict access to the blasting area. Inside that area is where Geo-Blast's work was completed. at happened in two phases — blasting and washing down — for two reasons. First, it cleaned any contaminants off of the concrete. e crew worked to remove "anything that would interfere with the bonding of the concrete repair material, so any dirt, grime, or beverage resid- ual [had to be removed]; potentially there were obviously bits of labels and tabs off cans," Cook said. e second reason for the work was to profile the concrete. A lthough there wasn't a spec to call for a specific concrete surface profile, some profile was needed for the coatings to grab onto. at was accom- plished with the combo of water and abrasive. "e water acts as a hydraulic cleaning agent in combina- tion with the air pressure from the compressor. Introducing Facility Floors "It was kind of a tie in — an interesting tie in because we were using crushed glass to clean the floor, and that's exactly what they do," said Tim Cook, operations manager at Geo-Blast Inc. The bales were getting stuck on the uneven concrete caused by the facility's materials. Bales were bunching up and causing issues with the machines. The solution chosen was to blast and coat the floor. The two-person crew from Geo-Blast used a Geo-Blaster 600SA unit with 200 feet (61.0 m) of hose, an Atlas Copco XAS375 compressor, and glass aggregate from Enviro-Grit. And even that glass was recycled!

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