Asphalt concrete is a very common modern building material, which is obtained as a result of hardening of a pre -sealing asphalt concrete mixture.
Several types of asphalt concrete are distinguished by a number of indicators, in turn, one or another type is used in accordance with the performance characteristic of it for the implementation of various construction tasks.
So, for example, coarse -grained asphalt concrete is used to arrange the lower layer of the road surface. In turn, due to the porosity and roughness of the resulting surface, it allows you to provide the most good adhesion with subsequent layers.
Asphalt concrete, which includes fillers of a smaller fraction (medium and fine -grained), is used during the device of the upper layers of road surface, which have a large longitudinal slope and are characterized by intensive movement. Due to the increased roughness of asphalt concrete, the resulting coating allows you to ensure the required adhesion of car tires with the road.
Fine -grained compounds are also used when creating two -layer coatings as the upper layer. It is worth saying that this type of material is characterized by high resistance atmospheric and mechanical influences.
When arranging road paintings with an average intensity of traffic, as well as if it is necessary to create a waterproof layer, sand asphalt concrete is used. In turn, this material is less resistant to the effects of the efforts of vehicles that arise during the movement of. But on the sidewalks or blindings of buildings, he shows himself well enough.
Bitumomineral mixtures are still emitted separately, which are used in the installation of lightweight coatings and roads with a slight intensity of movement.
Asphalt concrete mixtures are used during the current repair of the roadway, the blind area, and the arrangement of roofs of garages, viaducts, featherns, laying small areas, for example, parking lots and sidewalks. Economically, this material is most beneficial when arranging a small volume coatings.