Concrete Products

JAN 2019

Concrete Products covers the issues that attract producers of ready mixed and manufactured concrete focusing on equipment and material technology, market development and management topics.

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88 • January 2019 INNOVATIONS EQUIPMENT & PRODUCTS With an eye to making concrete delivery safer and more efficient, Con-Tech Manufacturing has developed the Power Chute, which elimi- nates the need to physically handle and swing mixer truck extension chutes. The component was unveiled at the National Ready Mixed Concrete Association's 2018 ConcreteWorks conference and will be prominently featured at World of Concrete 2019. The Power Chute consists of a main, foldover and four extensions that are permanently attached to the rear pedestal. The chutes are "nested" in the stowed position and can be deployed as required to achieve the necessary pour distance. Hydraulic cylinders fold and unfold the segments, while a hydraulic swing function allows the operator to control chute rotation to place the concrete as required. The position is controlled via wireless transmitter; it adds a level of safety by allowing the operator to be located away from the pouring activity or in the cab. "Worker safety is our focus on this project. By eliminating the need to handle the chutes, we can reduce chances of injury," says Con-Tech Vice President Grant McNeilus. "We consider ourselves fortunate and privileged to have the opportunity to partner with customers during the development of this product. Dolese Bros. exemplifies forward thinking, innovation and teamwork. Their focus on jobsite safety and valued input during the design and testing process allows us to bring new ideas like this to our customers." — Con-Tech Manufacturing, Dodge Center, Minn., 507/374-2239; World of Concrete Booth C6226 The premier Power Chute was shown at ConcreteWorks, ahead of duty in the Oklahoma fleet of Dolese Bros. Con-Tech Power Chute takes hands off approach Putzmeister Concrete Pumps GmbH is extending its range of mechanized shotcrete machines with Wetkret 4, billed as the next generation of equipment specially designed for underground construction. Wetkret 4 suits narrow galleries, thanks to its heavy-duty chassis, compact size (6-ft. wide, 7-ft. high), and reduced turning radiuses. It boasts two spraying arm versions, one with a maximum vertical reach of 33 feet, the other 26.5 feet. With material flow of 26 yd./hour, the Wetkret 4 pump assures a homogeneous shot- crete application, leading to layer quality and thickness accuracy while reducing rebound. Wetkret 4 is also equipped to automatically synchronize additive dosage with concrete flow, and features a FOPS/ROPS-certified cabin that faces the direction of travel, ICVD hydrostatic transmission, integrated air com- pressor and optimal weight distribution. Along with the Wetkret 4 rollout, Mixkret 3 expands Putzmeister's material delivery options the overall shotcrete process. Mix- kret 3 is compact and robust, small in size and turning radius. An ideal complement to Wetkret 4, engineers note, the robotized concrete spraying equipment was launched in the second half of 2018, and has the same components as Wetkret 4—facilitating and improving spare parts management. Mixkret 3 is the only mixer in the market of its height (7 feet) that has a mixing capacity of 4 yd. The tank's novelty lifting system offers a wide versatility in terms of Machines mine efficiency in underground shotcrete practice the height of concrete release in robotized equipment for shotcrete. Like the rest of the Putzmeister Mixkret range, Mixkret 3 has a four-cylinder diesel engine, which equips it with capacity for climbing, transfer and work at height. Its continuously variable hydrostatic transmission system runs with- out gear changes, improving climbing ability, transfer speed, starting acceleration and fuel consumption. — Putzmeister America Inc., Sturtevant, Wis., 262/886-3200, 800/884- 7210;

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