As a civilization, we have used concrete for millennia to build our homes, workplaces, and pretty much everything. The ancient Romans used it to build their works of engineering and we’re using it to build the world’s tallest structures. Concrete is essentially a wonder material in the world of building construction, but it requires a lot of sand.
Concrete is made up of on average 25 to 30 percent of sand. It can’t just be any sand either, some of the strength of concrete is due to it being made up of river sand or ocean sand, where the grains are rounded and dissimilar. That requires massive amounts of material sourcing for each project and now, it means that the world is slowly running out of usable sand for concrete. Learn about this peculiar problem and how we might solve it in this video below.