ROAD STRUCTURE Russian patent published in 2019 - IPC E01C3/04 

FIELD: construction.

SUBSTANCE: invention relates to construction and can be used in erection of road bed of airfields, aerodrome runways and runways in permafrost regions characterized by deep seasonal freezing of ground and high level of ground water. Road structure includes roadbed, road dressing, ballast prism with underlying layer made in form of triangular rigid core of strong easily compacted granular materials, having drainage properties, roadside, drainage system filled with crushed stone with fractions of 20–40 mm and laid in road bed body along the road axis, transverse drainage bends and drainage chutes installed in places of disposal of water discharge outlets. Road clothing is made in the form of a rail-and-sleeper grid resting on a ballast prism which, like the rigid core of its underlying layer, is filled with cuboid crushed rock with fractions of 25–60 mm, made from rocks of magmatic origin with addition of binding material. Main site of subgrade is separated from crushed rock by layer of drain needle-punch geotextile.

EFFECT: technical result consists in improvement of efficiency of proposed road structure due to increased life cycle of ballast materials contained in its composition.

1 cl, 2 dwg