METHOD TO ERECT ROAD SURFACING Russian patent published in 2013 - IPC E01C3/04 

FIELD: construction.

SUBSTANCE: method to erect road surfacing includes grinding of soil - road base, introduction of a binder into the ground soil, compaction of the produced mixture and soaking of the compacted mixture on air under natural conditions. The soil is ground for the depth of 10-30 cm, the aqueous solution of 0.12-0.30% technical lignosulfonate is introduced into the ground soil by means of watering with the solution volume of 3-6 l/m² of the soil surface, the moistened soil is compacted by a mechanised roller with weight of 25-40 t in 10-15 stages, soaking of the compacted mixture on air at 18-25°C for 3-5 days until soil moisture of 7-9%. Then hydraulic protection is arranged in the form of a double-layer asphalt concrete coating: the first layer with thickness of 7-8 cm from asphalt concrete with crushed stone content of not more than 40% is compacted with a smooth drum roller with weight of 10-18 t (8-10 stages), the second layer from asphalt sand concrete with thickness of 5-8 cm with subsequent compaction with a smooth drum roller with weight of 10-18 t (8-10 stages).

EFFECT: reduced labour intensiveness of works for erection of road surfacing.

1 tbl