METHOD OF MOTOR ROAD BUILDING Russian patent published in 1995 - IPC

FIELD: building of motor roads and lots. SUBSTANCE: first ditches and water drains are made and roadbed is prepared by forming longitudinal and cross profiles of road with earth banks and cuts, then sand underlayer is made and corering is laid. Underlayer in underflooded places is made of sand with height of 50-60 cm from maximum leve; of ground and flood waters and in non-underflooded places, with height of 30-40 cm. Covering is made of clay or loam, 10-15 cm thick, with additional layer of sand, fractions 5-10 mm, and thickness of 2-10 cm, placed on clay or layer, then layers are watered and rolled to form coherent skeleton structure consisting of 30-40% of clay particles; covering can be made of water-clay-sand mix with layer of sand, fractions 0.5-10 cm, and height of 10-20 cm, placed on mix layer after which layers are rolled to form coherent skeleton structure consisting of 30-40% of clay particles. EFFECT: enhanced quality of road. 3 cl, 3 dwg