METHOD TO MAKE BITUMEN BASE, BITUMEN BASE AND ITS APPLICATION Russian patent published in 2011 - IPC C08L95/00 C08K5/134 C08K5/20 C10C3/04 

FIELD: construction.

SUBSTANCE: method includes introduction of non-modified bitumen into a reservoir, equipped with a mixing device, and bitumen heating up to the temperature from 120 to 300°C. Then a blowing additive is added into a reservoir, and the mixture is mixed. Besides, the specified blowing additive has a common formula Ar1-R-Ar2. Invention also relates to a bitumen base of blown type produced by this method. The bitumen base is used to make a bituminous binder, and together with a road filler is used for road surface, asphalt mixtures, a gravel emulsion and a wear layer. The bitumen base is also used to make a sealing membrane, a membrane or impregnation layer. Method makes it possible to produce the bitumen base of required quality without necessity of pre-modification of the initial bitumen. The produced bitumen is more resistant as regards ageing, less brittle, has proper adhesiveness and hot viscosity compared to ordinary blown bitumen. Its workability in hot condition is comparable to workability of the initial bitumen in hot condition.

EFFECT: improved properties of the bitumen base.

16 cl, 2 dwg, 4 tbl, 3 ex