Fascine mattresses (Bentonite)
A unique method
Van Aalsburg has developed a unique method to stem the water flow in canals. We attach faggots to bentonite mattresses and sink them to the bottom of the canal using a sinking beam. This is carried out with the utmost precision and fully GPS controlled. This invention was applied in 2018 during the expansion of the Juliana canal. And very successfully. It attracted broad publicity. Van Aalsburg designed sowing machines that can stitch bentonite mattresses together, so that any size is possible.
Frequently Asked Questions
Bentonite is a type of natural sodium clay containing particles that are so small that they can stem the water flow in rivers and streams.
We attach willow faggots (fascine mattresses) on bentonite and sink these mattresses to the bottom of the canal.
This is carried out with the utmost precision and is fully GPS controlled.
Trusted by thousands of customers for over 50 years
This willow fence is 250 metres long and 3 metres high. We realised this project for Rijkswaterstaat
Van Aalsburg B.V. is working for Staatsbosbeheer. Willow is cut from the old grienden.