There are four main components for making a sand casting mold: base sand, a binder, additives, and a parting compound. After casting, the mold is broken down, the casting is removed, and the sand is then cleaned and prepared for reuse. Used sand can typically be reused multiple times before it becomes unsuitable for casting. After numerous cycles, the sand is often sent to landfills.

Scania is trying to change that. Instead of sending its used sand to a landfill, the truck manufacturer is providing it to Weber Saint-Gobain for use in making mortar for masonry constructions. Weber’s products are primarily composed of natural aggregates, namely virgin sand and gravel. Since these resources are accessible but finite, Weber has long been pursuing substitutes for virgin sand to for its products.

The arrangement with Scania is a win-win for both companies. “To be efficient with the limited resources we have on Earth, and prolong their lifespan, is a way to lessen our impact on the environment,” says Fredrik Nilzén, head of sustainability at Scania.

This year, Scania will transport some 20,000 tons of sand 150 kilometers from its factory in Södertälje to Weber’s factory in Vingåker. That’s three fully loaded trucks every day.