A sand powder that sticks like cement and extracts nitrogen from the soil: it sounds like a miracle cure. Sebastiaan Ooms built the machine that creates it, and the jury of the Drechtsteden Innovation Award was convinced. Can this truly transform construction, agriculture, and the climate?
In the PF Innovation workshop on Planckstraat in Dordrecht stands a massive machine that grinds sand, concrete rubble, and glass into an ultra-fine powder using a new method. Sebastiaan Ooms discovered that this process gives the material entirely different chemical properties.
The powdery sand becomes adhesive, allowing it to partially replace the binding function of cement in concrete. “We can break that concrete down again and recycle it endlessly. This allows us to use this building material much more efficiently than we do now.”
Because cement is produced at high temperatures, its production is responsible for approximately 8 percent of global CO2 emissions. With Ooms’ invention, less cement is required in concrete, which is a win for the climate.
When spread over a field as a soil conditioner, the powdered sand attracts nitrogen particles from the soil, which plants then use for nutrients. “As a result, it can replace synthetic fertilizer,” Ooms says. “But it also removes nitrogen from the soil, potentially offering a solution to the nitrogen crisis in the Netherlands.”


