Fibrillated Microfibers

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Slabs On-Deck and On-Grade

Project Description:

HNTB project engineers specified two levels of fiber-reinforcement concrete crack control for this 25,000-seat football stadium facility. For plastic-crack control, specifications called for 1.5 lbs. per cubic yard of a polypropylene fibrillated (net-shaped) fiber – FORTA® ECONO-NET® - which was used in over 3,000 cubic yards of concrete slabs-on-metal-deck for the 15 corporate boxes and the press box. For post-crack control, specifiers called for 4.5 lbs./cu. yd. of a polypropylene/polyethylene blend macrosynthetic fiber – FORTA-FERRO® - which was used in over 4,000 cubic yards of concrete bleachers in the stadium as well as a large concrete parking lot surrounding the stadium. In all, over 23,000 pounds of synthetic fibers were used on this $54 million stadium project. This multi-plex stadium was constructed primarily to facilitate collegiate football, but is of sufficient size and configuration to accommodate NCAA and professional soccer as well. The project served as the initial project in the United States that used a special 'high-fiber round-bar' pump grate developed by FORTA Corporation to allow for easy flow-through of the high-volume macro-fibers in a considerable volume of pumped concrete for the bleacher segments of the stadium.

Project Photos: Click on a photo for larger view.

• Owner: University of Akron - Facilities Planning and Construction, Akron, OH
• Location: Akron Zips Football Stadium, Akron, OH
• Application: Parking lot slab-on-ground, corporate boxes/press box/bleachers slabs-on-deck
• Architect: HNTB Architects/Engineers/Planners, Kansas City, MO
• Consulting Architect: HNTB Ohio, Inc., Cleveland, OH
• Construction Manager: Hunt Construction Group, Paradise Valley, AZ, and Welty Building Corporation, Fairlawn, OH
• Ready-Mix Supplier: Mack Concrete, Akron, OH, and Medina Supply, Cuyahoga Falls, OH
• Fibers: FORTA-FERRO® macrosynthetic, 1-1/2" long, 4.5 lbs./cu. yd. dosage and FORTA® ECONO-NET® fibrillated, 1-1/2" long, 1.5 lbs./cu. yd. dosage

Special Note: The Akron Zips University Football Stadium project was the FORTA Corporation United States Project of the Year Award winner for 2008, awarded to William D. Coursen, Territory Sales Manager.

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