Asfaltointi

Asfaltointi is the process of applying asphalt, a common road construction material, to surfaces. Asphalt is a composite material consisting of aggregate, such as gravel or crushed stone, bound together by bitumen. The bitumen, a viscous liquid or semi-solid form of petroleum, acts as the binder, holding the aggregate particles in place.

The asfaltointi process typically involves several steps. First, the existing surface, whether it be a prepared sub-base or an older road layer, is cleaned and sometimes treated with a primer. Then, hot asphalt mix is transported to the site and spread evenly over the surface using specialized paving machines. The thickness of the asphalt layer is determined by the intended use of the surface. Finally, the freshly laid asphalt is compacted using rollers to achieve the desired density and smooth finish.

Asfaltointi is used for a wide range of applications, including highways, city streets, driveways, parking lots, and airport runways. Its popularity stems from its durability, relatively low cost, and its ability to provide a smooth and safe driving surface. The process is efficient, allowing for rapid construction and repair of road networks. Proper maintenance, such as crack sealing and resurfacing, is necessary to prolong the lifespan of asphalted surfaces.