A customer asked NetterVibration for a study to implement pneumatic high frequency vibrators on the formwork to compact concrete. NetterVibration supplied the technical drawing that showed the spots where the vibrator had to be mounted and thus the mold supplier was able to manufacture the mould accordingly.
This customer purchased a large quantity of Netter NVG 61 Pneumatic External Vibrators that were installed in strategically chosen spots on the mold. These spots were determined by engineers from NetterVibration. The high frequency rotary pneumatic vibrators applied to the mold compact the concrete efficiently to the total satisfaction of the customer and the German railway company.
As a result, once the concrete was cured, the absence of trapped air led to more density and stability.