Concrete Products

JUN 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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40 • June 2019 INNOVATIONS REPORT PRECAST/PRESTRESSED Elematic Oyj rode into the bauma 2019 trade fair, Munich, with a fifth generation plank and slab extruder sporting new compaction control, bouncing prevention and mix recycling mechanisms. The Extruder E9 sets what company engineers dub a new benchmark for high-speed casting at low operating costs. Equipped with an advanced touch screen user interface and added intelligence features, the machine is geared to offer a new level of user experience and the potential for significant material savings measured against predecessor models. RAISING RETURNS The E9 plays to a new metric in extruded plank and slabs: Speed. In today's construction market, Elematic notes, fast casting is desired because of tight project scheduling demands. With reportedly the industry's highest casting speed—up to 2.7 meters per minute, 30 percent to 70 percent faster than prior models—the new machine responds to market requirements for fast plank or slab turnaround. "The speed translates into eight to 10 cast beds in the same amount of time that previously produced only six cast beds. This means as many as 18 cast beds per day, which brings high return on investment and profitable business for the precast producer," says Elematic Product Director, Floor Technologies Jani Eilola. The stepped-up pace is achieved with a new extruding screw design, independent screw drives and optimized casting parameters. Similar to its predecessors, the new E9 is based on shear compaction technology. Efficient compaction allows for minimum cement content in slabs, owing to the high concrete density and exponential effect on compressive strength development. Elematic injects speed, recycling capability into flagship extruder The fifth generation E9 Extruder was the centerpiece of the Elematic exhibit at the 2019 bauma trade fair. New technology and components equip the machine to deliver advanced plank and slab quality, plus mix optimization and recycling. The retooled E9 rounds out an Elematic extruder family, joining the S5 and P7 models.

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