METHOD TO ERECT ROAD BASE Russian patent published in 2011 - IPC E01C3/04 

FIELD: construction.

SUBSTANCE: method to erect a road base includes application of oil slime onto an earth bed, rolling the earth bead together with the oil slime, application of the second layer and its rolling. Prior to application of the oil slime onto the earth bed, the oil slime is heated up to 90-95°C and is maintained at this temperature for 15 minutes. The second layer, which is a mixture of crushed stone and/or gravel, sand and oil slime, is exposed to stepped temperature treatment at air pressure of 0.103-0.107 MPa at the first stage to the temperature of 90-95°C, at the second stage - to the temperature of 110-130°C with maintenance at each stage for 15 minutes. The first layer is laid onto the earth bed with height of 3-5 cm, and the second layer has height of 5-8 cm at the following mass ratio of components, wt %: sand 15-21; oil slime 8-11; crushed stone and/or gravel up to 100.

EFFECT: the method makes it possible to produce a road base of higher strength, frost resistance and low water absorption.

2 cl, 4 ex, 1 tbl