Not sand, but salt. When crushed into the road surface by car tires, it reduces the freezing point of the water on the road below 0 degrees celcius, to about -5.
You'll have to be more specific. Africa is a huge continent and there are sand or dirt roads everywhere.
which mineral is the main component of sand
How many grains of sand are there on the planet?
Bulk bags are most commonly used for rainstorms and floods. In these types of situations, the bulk bags are known as sand bags. Using sand bags helps for residents and roads to not flood.
Utah uses salt, sand, and liquid ice-melt on the roads during winter.
Road crews spread sand on icy roads to improve traction for vehicles. The sand creates a rough surface that helps tires grip the road, reducing the likelihood of skidding. This method is often used in conjunction with salt, which helps to melt ice, but sand is particularly useful in areas where melting is not feasible or where additional traction is needed. The application is typically done using specialized trucks equipped with spreaders that distribute the sand evenly across the road surface.
Salt melts ice, sand improves tires grip on the road
the main source of beach sand is canyons.
sand gravel, asphalt, pavement, concrete, and rebar
because it just is
to increase friction
Ice is slick; sand is not. Sand spread over the ice and snow make it less likely that cars will slide uncontrollably and get into accidents.