Construction company Keil & Purkl Tiefbau GmbH has been a satisfied user of HÜDIG aggregates for more than 10 years.
The company was mandated to reroute a sewage canal with nominal size DN 1800.
The face sides of the excavation pit made of sheet piles were frozen by means of an ice building technique to prevent that the groundwater enters the excavation pit through the annular of the old canal.