Concrete Products

MAR 2018

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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Page 54 of 75 March 2018 • 53 Like a symphony, tradesmen began an intricate pattern of con- trolling the pour and ushering laser screeds for leveling. The Mega Slab started with a relatively small section, but by Sunday morning was two-thirds the way down the hangar. A revolving door of crews ensured everyone got the rest, food and hydration needed before jumping back into the fire. As the team started the second half of the pour, ride-on trowel machines could be seen blading their way across the surface of the hardening slab, looking like go-karts from a distance. As the trowels moved toward the end, saws soon followed. MASS SUCCESS By 6 a.m. Monday, the work was finished almost as quickly as it began. Lasting 32.5 hours, the operation resulted in an average placement rate of 315 yd./hour. The slab was burnished, finished and achieved overall FF/FL numbers of 56.22/42.06. Moreover, the site prep crew was able to grade within 3/16th of an inch across the placement's entire square footage, keeping the concrete order within 2 percent of estimated volume. COVER STORY TEXAS MEGA SLAB Barton Malow, Lloyd Concrete Services and Unlimited Concrete Solutions assembled a management team and trades crew of four super- visors, four safety representatives, 62 finishers, 42 laborers, eight carpenters, seven operators, two rodbusters and two layout engineers. Their Mega Slab "fleet" included 38 ride-on and 12 walk behind trowel machines, 10 saws, four laser screeds, and four power rakes. PHOTOS: Jon Humphrey, courtesy of Barton Malow

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