Concrete Vibration and Consolidation
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چکیده
Concrete Vibration can take some time ans sometimes it just seems to take longer than it should to pour and consolidate a precast product, such as concrete pipe or a manhole section. Frustrated by sluggish procedures, The Cretex Companies’ Rapid City, South Dakota, plant determined to improve on the half hour it took to pour zeroslump concrete, consolidate it, and get the top ring in place on their 48-inch span arches (8-feet long). Cretex developed a method to cycle the vibrators in a specific direction. The span arch had two vibrators mounted at the top of the form and two more opposing toward the bottom. By sequencing the vibrators and reversing opposite alternate units they were able to cut their pour time in half. Clearly, these new concrete vibration measures were a boon to their productivity.
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