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2015WinterShotcreteEMag

The construction schedule was compressed and required multiple operations to run concur- rently in multiple tanks at the same time. Concrete demolition, abrasive blasting, welded wire rein- forcement installation, and shotcrete application were all tasks which were required to take place at the same time. Shotcrete Placement To complete this project, 640 bulk bags of King Packaged Materials MS-W1 with synthetic fiber were used. The prepackaged dry material was placed into a Cemen-Tech MCD 10-150 mobile concrete dispenser, where it was mixed to the proper slump and conveyed into an Allentown Powercreter 20S shotcrete pump. Pumping dis- tances varied from 200 to 300 ft (61 to 91 m) in length. Shooting wires were installed and shot- crete was placed by ACI-certified nozzlemen. The Fig. 4: Shotcrete placement final finish was with steel trowel to provide a uniform surface to receive the final protective lining system (Fig. 4 through 6). David Graham, Project Man- ager for PCiRoads, LLC, since 2007, is an ACI Certified Nozzleman for both dry- and wet-mix shotcrete. With over 30 years of experience in the shotcrete industry, he has managed numerous projects nationwide that include the use of shotcrete on buildings, bridges, tunnels, dams, silos, tanks, and soil stabilization. Honorable Mention Fig. 5: Shotcrete placement at weir Project Name Long Prairie Packing-Digester Rehabilitation Project Location Long Prairie, MN Shotcrete Contractor PCiRoads, LLC* General Contractor PCiRoads, LLC* Architect/Engineer BKBM Engineers Material Supplier/Manufacturer King Shotcrete Solutions* Project Owner Long Prairie Packing Co. *Corporate Member of the American Shotcrete Association Fig. 6: Completed repair 42 Shotcrete • Winter 2015


2015WinterShotcreteEMag
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