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Green U-beams spell safe travels for Phoenix Sky Train

U.S. Concrete Precast Group has completed the production of 130 prestressed, green concrete U-beams for the Sky Train project, a massive, $1 billion-plus public works effort now under construction at the east end of the Phoenix Sky Harbor International Airport. U.S. Concrete secured the project in 2009 with lead contractor Hensel Phelps Construction Co. Production of high-strength U-beams began at the company’s Phoenix manufacturing facility in February 2010, utilizing environmentally friendly concrete mix design, EF Technology, which used 12.5 percent fly ash replacement and can have a carbon footprint 30 percent lower than standard concrete mix designs.

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‘D’ Silo scores A for performance

Lehigh Cement officials formally commissioned a 20,000-metric-ton, multi-compartment, environmentally friendly silo at the company’s Leeds, Ala., mill late last year with an open house. With a 79-ft. outside diameter, the 239-ft. structure stores the operation’s three product lines: Type I/Type II general purpose cement; Type V specialty cement, used mainly for concrete pipe production; and Type C1157 HE, a limestone-based powder suitable for mix designs in infrastructure projects.

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Homeowner Incentives

With cash prizes of $500 or $1,000, Hanson Hardscapes’ Before & After Photo Contest was open to all residents of the U.S. and Canada. Participants were encouraged to create something out of the ordinary on their own, or with their contractors/installers, using Hanson Hardscapes paving stone or segmental retaining wall units.

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