POLYMERIC-REINFORCING GRANULAR STABILIZER FOR A MACADAM-MASTIC ASPHALT-CONCRETE Russian patent published in 2006 - IPC C04B26/26 

FIELD: construction of motor car roads.

SUBSTANCE: the invention is pertaining to construction of motor car roads and may be used for the construction of the upper layers of the highway coatings. The technical result of the invention is production of a stabilizing additive in the granular form capable to reduce not only disintegration a macadam-mastic asphalt-concrete mixtures, but also to increase their strength at 50°C (i.e. to improve their heat resistance),the factor of their durable water saturation and a adhesion power of the binder to the mineral materials. The polymeric-reinforcing granular stabilizer for macadam-mastic asphalt-concrete includes the bitumen and the polyamide fibers. At that in the capacity of the polymeric-reinforcing additive it contains the wastes of the pipeline hydro-insulation of ArmPEVA type representing the waste of the bilayered belt of a shrinking material used for insulation of pipes and consisting of a layer of the adhesive active composition of a glue-melt on the basis of an copolymer of ethylene with a vinyl acetate and a layer of the radiation-cross-linked polyethylene treated with electrons and with applied on it of the hot-melt adhesive, and in the capacity of an adhesive use surface-active substance of a cationic type - KADEM_BT, representing the cationic reactant made out of acids of vegetable or animal origin of the fraction of C₁₆-_{C20 and a polyethylene polyamine at the following components ratio(in mass %): bitumen BND 60/90 - 28.0-38.0, a polyamide fiber - 31.0-35.0, the indicated polymeric-reinforcing additive - 30.0-35.0, the indicated surface-active substance - 1.0-2.0.}

EFFECT: the invention ensures production of a stabilizing additive in the granular form capable to reduce not only disintegration a macadam-mastic asphalt-concrete mixtures, but also to increase their strength at 50°C.

1 cl, 1 ex, 6 tbl