The Process

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	Concrete Spreader Placing Concrete

Concrete Placement
The steel table exits the panel layout stations and travels on rollers to the concrete placement station. Stringent quality control procedures are followed to insure proper strength of the concrete mixture. Precast concrete needs to achieve high strengths in a very rapid time frame. Compressive strengths of 3000 psi after 8 or 9 hours can be attained through the use of high early-strength mixtures. New state-of-the-art materials such as self compacting concrete (SCC) are used to guarantee the highest surface quality finishes.

A batch plant mixes up the exact quantity of concrete mixture for the panels on each table. Each batch will be sampled and then tested for quality control purposes. The concrete spreader will receive the concrete mixture and dispense the concrete into the panels in a highly automated fashion. The spreader has ten gates which can be open or closed depending on panel size and presence of any openings. The roto-vane auger inside, as well as each gate sprinkle the concrete mixture into each wall of floor panel. This diminishes the force that the concrete comes out at, ensuring that the reinforcing steel is not displaced. After all of the panels on the table are filled with concrete, the table moves along the rollers to the next station for final consolidation.