INSULATING SLAB Russian patent published in 2002 - IPC

FIELD: road-building materials used in building of automobile roads, bridges, airfields, as well as in arrangement of roofs of buildings and structures. SUBSTANCE: insulating slab has a layer structure, in which the inner layer is based on an organic binder and mineral component, and both outer layers are made of hydrophobized fibrous material or hydrophobized polymeric netting, or roofing material or hydraulic insulating material. As an organic binder the inner layer contains bitumen, or asphalt, or polymeric-bitumen compound containing 48.0 to 80.0 percent by mass of a mixture at least of two substances selected from the product of propane deasphalting of petroleum residues, bitumen, asphalt, fuel oil, oil fraction in the form of industrial oil, naphtheno-aromatic hydrocarbons; 10.0 to 26.0 percent by mass of colloidal dispersion of copolymer of ethers of acrylic acid with butadiene, styrene, acrylonitrile and/or copolymer of vinylpyridines with butadiene and styrene, and/or copolymer of vinyl - and vinyldenchlorides with butadiene, and/or polyisoprene, and/or butyl rubber, and/or polyisoprene, and/or butadiene-styrene, and/or butadiene-nitrile, and/or polyvinylchloride, and/or polyacrylamide, and/or ethylene-propylene chlorosulfonic polyethylene, and/or carboxylate polymer, and/or urethan polymer: 10.0 to 26.0 mas.% of mineral component, used as a mineral component is limestone mineral material or screenings of crushing of basic and/or acid rocks or a mix of limestone mineral material and screenings of crushing of basic and/or acid rocks. EFFECT: enhanced deformability, stability of road and roof structures during a long period of time. 5 cl, 1 dwg