FIELD: construction.
SUBSTANCE: invention relates to road-building materials, namely to modifying asphalt-concrete compositions, and can be used on the device for coating roads, aerodromes, bridges in different climatic zones. Composition comprises a rubber powder having a particle size of not more than 1 mm and a specific geometric surface area of at least 3,500 cm2/g, taken in an amount of 60–75 % of the total weight of the composition, and a filler. At the same the rubber powder is made in the form of crushed rubber, activated by asphalt deasphalting, and the filler is an alumina powder or powder of a material containing alumina as the main component.
EFFECT: technical result consists in obtaining a modifier that does not lead to a decrease in the density of asphalt concrete, as well as in simplifying the technology of obtaining this composition and in expanding the arsenal of asphalt concrete modifiers.
1 cl, 1 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MODIFYING COMPOSITION, METHOD OF ITS PRODUCTION AND ITS APPLICATION IN ASPHALT-CONCRETE ROAD SURFACES IN VARIOUS CLIMATIC ZONES | 2010 |
|
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| METHOD OF PRODUCING BITUMINOUS BINDER | 0 |
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SU793407A3 |
| LOW-TEMPERATURE METHOD OF PRODUCING MODIFIED RUBBER CRUMBS | 2020 |
|
RU2730857C1 |
| METHOD TO PRODUCE MODIFYING ADDITIVE FOR HOT ASPHALT-CONCRETE MIXTURES | 2014 |
|
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| BITUMEN-CONCRETE MIXTURE ON NANO-MODIFIED BINDER | 2013 |
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RU2521988C1 |
| POLYMER COMPOSITE MODIFIER OF ASPHALT CONCRETE MIXTURES AND BITUMEN BINDERS | 2023 |
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RU2803598C1 |
