The soil underneath the historic town of Amsterdam is relatively soft. So this also means that during larger construction projects extra care has to be taken to avoid major soil displacements, which could potentially lead to cracks in the monumental buildings and costly reparation work as a consequence.
Fortunately, there was still a nearby 100 years old, unused cast iron pipe underneath the canal, which could be converted into a new drinking water pipeline by applying innovative relining techniques.
Original drawing of old pipe underneath Amsterdam canal
“Insituform supplied a state-of-the-art relining system based on our Insitumain® Technology, which is a proven solution around the world for renovating drinking water pipelines”, explains Ton van Geest. “Through this technique wecreate a new, clean and resilient pipe inside the existing pipe. The composite pipe provides structural integrity, corrosion resistance, and can cope with water pressure fluctuations, ensuring a reliable network operation for many years to come.”
“Insituform and AOC Aliancys have been working together for the last 5 years to develop this robust relining technology”, adds Rob van de Laarschot, Head of Technical Service, AOC Aliancys Europe. “The liners are impregnated with the new styrene-free Beyone™ 700-T-01 FC resin from AOC Aliancys. The ingredients of this resin are on the positive list for food contact applications, the resin is manufactured in line with GMP, and resin/ glass liner systems have been approved by KIWA-ATA as a sign of quality and trust.Liners impregnated with Beyone™ 700-T-01 FC resin have already seen many successful installations for drinking water networks in several European countries.”
QUICK AND EASY INSTALLATION
Insituform relined the pipe, which was 600 mm diameter and 50 meters length, in only two days. This result was only possible because of the excellent site preparation, the experienced Insituform crew, the robust material system, and the cooperation with the sub-contractor responsible for the civil works.
The renovated drinking water pipeline was back in service within five working days without any impact to quality or reliability, and to the full satisfaction of the customer. “Our customer was very happy with the support received from Insituform and AOC Aliancys during project preparation and execution”, adds Ton. “They were delighted that the whole renovation did not require major reconstruction work. Obviously, this was also a relief to the nearby residents.”
Video impression of installation works can be seen through the following link.