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Simulation of the backfill process with Plexiglas tubes<br />
Flow rate between 3 litres and 5 litres per minute (mix temperature 23 °C).<br />
Tube 1: Hollow cylinder (length 2 m, diameter 0.5 m)<br />
Failure of the high-shear mixer<br />
during the first 2 mix batches<br />
→ Increase of silica fume content<br />
→ <strong>Development</strong> of bleed water and<br />
a wavy surface (ripple marks)<br />
The bleed water and air left the tube.<br />
The tube was completely filled with the<br />
exception of some air bubbles.<br />
Engelhardt/Haverkamp<br />
Engelhardt, H.-J.; Haverkamp, B.; von Borstel, L.E.; Van Marcke, Ph. & Coppens, E.<br />
ONDRAF/NIRAS DBE Technology GmbH – <strong>Backfill</strong> Project – Project & ONDRAF/NIRAS<br />
B Tests & C B 31/07/2014 Techno & C Techno (MPA – Meeting Braunschweig)<br />
Category Brussels, <strong>WM2015</strong> -B 07. <strong>15374</strong> & 21/02/2013 November C 2014<br />
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