Consolidating today’s higher-slump concrete mixes with conventional vibrators can result in overvibration, which drives out bleed water and can lead to surface defects. This test wall was constructed using a normal mix with a water-reducing admixture, consolidated at a vibration speed of 12,000 vpm. The vibration caused bleed water to leak out at the bottom of the form.
The 28-ft.-tall walls of this storage facility in Delaware were consolidated using only Rebar Shakers and no internal vibrators.
Stick-It Vibrator Mounts make it possible to use external vibrators on smooth-surfaced forms, such as ICFs and cardboard tubes, that can’t support traditional brackets. They use a venture air system to provide a suction mount.
Wyco Toolís new Sure Speed vibration motor maintains a consistent vibration speed, regardless of the loads imposed by shaft length and vibrator head size, or the concrete mix characteristics.