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2013SprShotcreteEMag

New Products & Processes QUIKRETE Reshapes a National island in November, and we had to complete our portion of Historic Landmark the work before the birds returned in February, which meant everything had to be expedited starting with the delivery of material. Beyond the challenging schedule, the application process was full of danger. The nozzlemen had to be hoisted more than 60 ft (18 m) in lifts to spray apply the shotcrete before sculptors repelled down the cliff to shape the material. The QUIKRETE® Companies recently supplied shotcrete in The end result was a structurally sound slope that matched the 3000 lb (1361 kg) bulk bags for a restoration project on Alca- surrounding environment.” traz Island, also known as The Rock. Boulderscape, a premier In one weekend, 131 bulk bags of QUIKRETE Shotcrete design architect that specializes in shotcrete application, used MS–Fiber Reinforced and 126 bulk bags of QUIKRETE QUIKRETE Shotcrete MS – Fiber Reinforced and QUIKRETE Shotcrete MS were delivered to Alcatraz Island for the project. Shotcrete MS to successfully repair and stabilize a failing slope QUIKRETE delivered16 truckloads of material to Pier 50 in on the 22-acre island. In addition to facing dangerous applica- San Francisco before being shipped on two barges to Pier 33 tion conditions, a condensed 6-week shotcrete schedule was on Alcatraz Island where it was offloaded at night by crane required to avoid disruptions to regular tour operations while one-by-one before finally being transported to the job site on considering the habitat and migration patterns of local sea birds. trailers pulled by four-wheel all-terrain vehicles. “Navigating a variety of unique factors made this a very QUIKRETE Shotcrete MS–Fiber Reinforced is a single- fulfilling project for everyone,” said Steve Jimenez, Senior component micro silica-enhanced repair and restoration mate- Vice President of Commercial Sales for Boulderscape. “We rial that achieves more than 9000 psi (62 MPa) at 28 days and couldn’t start until the indigenous birds migrated from the features very low rebound and permeability characteristics. The QUIKRETE Companies offers a full line of shotcrete products that can be applied through a wet or dry process to deliver high strength, high adhesion, low rebound, and low sag in rehabilitating bridges, tunnels, parking garages, ramps, piers, dams, and other concrete structures. QUIKRETE shotcrete has been used on many unique and high-profile renovation and restoration projects including the Pleasure Pier in Texas, the Stanford Linear Accelerator in California, the Spokane River in Washington, and the Dennis Edward Tunnel in Oregon. For more information on QUIKRETE and its products, visit www.quikrete. com, Like it on Facebook, and follow it on Twitter @QUIKRETE. Blastcrete’s Concrete Pump Attachment Features Universal Design Blastcrete Equipment Company, a manu- facturer of concrete mixers, pumps, and related products, offers the Model RD6536 skid steer pump attachment. The 3 in. (76 mm) hydraulic squeeze pump is ideal for ICF, block fill, form and pour, driveways, basements, and various shotcrete applications, with an ability to pump grout materials, 3/8 in. (10 mm) 44 Shotcrete • Spring 2013


2013SprShotcreteEMag
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