EULESS, Texas, Sept. 4, 2013 (GLOBE NEWSWIRE) -- Celebrating the opening of the San Francisco-Oakland Bay Bridge, Central Concrete Supply Co., Inc., a business unit of U.S. Concrete, Inc. (Nasdaq:USCR), and the leader in delivering low-CO 2 concrete to the San Francisco Bay Area, has posted a photo gallery showcasing the innovative concrete solutions deployed for the Bay Bridge construction project. This Visual Album, "The Bay Bridge, A Thirteen-Year Retrospective," provides visitors with a unique view of the enormity of the Bay Bridge project.
Thirteen-Year Retrospective: Highlights
By the NumbersCentral Concrete started work on the San Francisco-Oakland Bay Bridge in 2001. Twelve years later, Central Concrete has supplied over a quarter of a million cubic yards of concrete—equivalent to covering a football field with concrete, 153 feet thick. At peak times, Central Concrete utilized four plants, 60 trucks at a time (using 136 trucks for the East Span Deck pour alone), and multiple 12- to 16-hour pours, including several overnight placements. Rigorous Requirements The Bay Bridge project entailed a number of rigorous requirements, such as concrete durability, CO 2 reduction, rapid setting and pumpability. To meet these requirements, Central Concrete engineered more than 40 specialty mixes, leading to many new performance milestones. Not only were the mixes optimized to deliver the aggressive performance specified for this large-scale, technically challenging project, but Central Concrete's use of 25 percent to 50 percent cement replacement materials significantly reduced the Bay Bridge's carbon footprint. The low-C0 2 mix designs resulted in at least 60 million pounds of CO 2 reduction, as compared to traditional Portland cement concrete. "Central Concrete, at every turn, was ready to take on the uncompromising demands presented by the Bay Bridge Project," said Greg Allen, project manager for MCM Construction, one of the lead contractors on the bridge project. "We selected Central Concrete for their deep technical expertise, outstanding problem-solving skills, and ability to deliver the highly engineered mixes required for this job. At the same time, they offered the broad and deep resources necessary for this enormous project, while running their business with the personal care seldom found in large companies."
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