ASTRINGENT FOR STRAIT OF STRUCTURAL LAYERS OF A TRANSPORT STRUCTURE AND METHOD OF ITS USE FOR THE CONSTRUCTION OF A TRANSPORT STRUCTURE Russian patent published in 2018 - IPC E01C3/00 C04B26/16 C04B14/26 C04B40/00 C04B111/20 

FIELD: transport machinery.

SUBSTANCE: invention relates to transport construction and can be used as a composition for the device of various structural layers of transport structures, namely roads, for example pavement structures, slopes of the roadbed, fortified roadsides, cones of embankments of bridge structures, bases of roads, heads of culverts, parking lots of motor vehicles, lawns reinforced with rubble, as well as aerodromes, industrial and construction sites. Astringent for straits on the structural layer of a transport structure based on a two-component polyurethane system, which is a mixture of a compound, containing at least two hydrogen atoms active with respect to the isocyanate which contains a hydroxy-functional compound with hydrophobic groups and a polyisocyanate containing an additive, contains as a micropowder additive a mineral substance active with respect to carbon dioxide, where said substance is at least one carbonate mineral from: limestone, dolomite, their transitional variety, micropowder is a mixture of activated by milling and non-activated specified substance at the ratio of the proportions of the activated substance to the non-activated substance 10–15:90–85, and in the polyurethane system, the mixing ratio of the components is, by mass. h.: said compound 75–125 and polyisocyanate 50–75, with the following binder component, wt. %: said micropowder 0.5–3, specified system is the rest. Method for using the aforementioned binder is carried out by spilling it onto a grain-containing element of a mineral material, a horizontal or inclined structural layer transport structure with discrete unconnected jets with the formation of a framework structure of the structural layer of the transport structure by enveloping the shells of said astringent grain elements with mineral material and forming vertical filaments from the binder in randomly distributed voids between the shells contacting each other, the subsequent curing and shrinkage of the binder frame structure, where the jet of the binder is distributed by oscillating movements, orienting the jets in the direction of the perpendicular to the surface of the structural layer of the transport structure.

EFFECT: technical result is increase in the strength characteristics of the structural layer of the transport structure.

7 cl, 2 dwg, 1 ex