SU571491A1 - Asphalt-concrete mix - Google Patents

Description

This invention relates to road safety and

Asphalt concrete mix can be recommended for the construction of coatings of the city and highways and airfield g coatings with high traffic intensity,

I A well-known concrete mixture containing black organic sticking sand, crushed stone: mineral powder and surface active additive 1.

The asphalt concrete mixture, including bitumen, sand, crushed stone, and 15 mineral powder, is the closest to the described invention according to the technical essence and the achieved result. The disadvantage of this mixture is the unsatisfactory durability of road surfaces from it to the recent impact of heavy traffic loads, climatic factors , anti-icing agents and studded tires for cars ...

The purpose of the invention is to increase wear and shear. 2S

This is achieved in that it additionally contains an alkyl-saturated heteroyl i polyamine at the following ratio of components (wt.%):

Bitum6.5 - 7.5

Sand 15-25

Shaben .45-58

Alkyl-substituted heterocyclic polyamine, O2-O, 1 Bitumen reflex is used with an increased viscosity of BED 4O / 6O. (GOST 11954-66). Asphalt-blended mixture does not require compaction with rollers when laying on corners.

An example of the composition of the asphalt mixture (wt.%)

Bituminous SD 4O / 6O.6-7

Sand natural medium-grained21, 25

Shcheben igneous rocks fr. 5-20 mm 5O

Mineral powder is known 22

The wear resistance of this mixture (lost in weight after 1OO cycles of testing according to the method of CR) and industrial production), MP / cm - 6.2, 3 Shear stability (g indented by the stamp according to the method of Mosasphaltstroy trust). mm - 1.5. The formula for the acquisition of Asf; & toto death is the same as that of tum, peshzh. Shepherd mnner lvogo rashok, otlichausha with. what. In addition to increasing tayoso and svegostoychivostyu, it additionally contains alkyl-eamy5714 "yellow" heterocyclic polyamine with a low proportion of the component (wt.%): Bntum6 5 Sand 16-25 Crushed Stone45-58 Alzheyamegesheny heteroiclichesyyle0yle0yle-lye-lye hea ate hetero-cyclic jyo-lye zyme 16-25 gravel 45-58 Sources of information and information taken into account by expert: 1. Copyright USSR no. 447423. C O4 B 13 / ZO. 25.1O.74. D. Rybyev, I.A. Asphalt Bethes, FA., Higher School, 1969, p. 354.