Asfalttikerros

Asfalttikerros refers to an asphalt layer, typically used in road construction and pavement. It is a composite material primarily composed of asphalt binder and mineral aggregate, such as crushed stone, sand, and gravel. The asphalt binder, a viscous black liquid derived from petroleum, acts as a glue, binding the aggregate particles together. This mixture is heated and then spread in layers onto a prepared base, compacted to form a durable and smooth surface.

The properties of an asfalttikerros are crucial for its performance. These include its resistance to deformation under traffic loads, its ability to withstand varying weather conditions, and its skid resistance. The specific mix design, including the type and size of aggregate and the amount of asphalt binder, is carefully chosen to meet the demands of the intended application, such as highways, residential streets, or airport runways.

Asfalttikerros is widely used due to its cost-effectiveness, relative ease of installation, and the smooth riding surface it provides. It is a common choice for both new road construction and for resurfacing existing pavements. Maintenance often involves crack sealing, patching, and periodic overlays with new asphalt to extend the life of the pavement. The disposal and recycling of old asphalt are also significant considerations in modern construction practices.