BUILDING MATERIAL "BUROLIT" Russian patent published in 2007 - IPC C04B28/04 C04B16/08 C04B18/04 E01C3/04 

FIELD: manufacture of building materials for strengthening intrafield roads, banking-up of branch sites, bases of dumping grounds; construction and recultivation of industrial objects.

SUBSTANCE: proposed building material contains drilling the sludge at density of 1.3-1.8 kg/dm³, cement (preferably grade M400 D20 suitable for use at temperature of from minus 30 to plus 40C), 10-20% of volume of drilling sludge; carbamide-formaldehyde foam plastic at density of 10-30 kg/m³, 10-25% of volume of drilling sludge and mineral filler (sand, ground granite) at size of particles of 2.7-3.1 mm, 10-20% of volume of drilling sludge. Building material contains additionally calcium chloride in the amount of 2.0% of drilling sludge volume. Composition of drilling sludge is described in invention.

EFFECT: avoidance of emission of contaminants of drilling sludge into surrounding medium; increased service life of structures.

5 cl, 4 ex