Research Article
Polyfunctional Modifiers for Bitumen and Bituminous Materials with High Performance
Table 10
Results of laboratory tests of oxidized bitumen 60/90.
| | Number | Indicators | GOST 22245-90 requirements | Bitumen samples | | Original | Adhezoline content, wt.% | | 0.6 | 0.8 | 1.0 | 1.2 |
| | (1) | Penetration, 0.1 mm: | Not below | | | | | | | | at 25°С | 61–90 | 73 | 75 | 81 | 86 | 78 | | at 0°С | 20 | 25 | 30 | 30 | 25 | 23 |
| | (2) | Softening temperature (), °С | Not below 47 | 51.4 | 49.8 | 49.6 | 50 | 49 |
| | (3) | Ductility, сm | Not less than | | | | | | | | at 25°С | 55 | 89 | 128 | 116 | 110 | 120 | | at 0°С | 3.5 | 4.5 | 4.9 | 5.0 | 4.5 | 4.9 |
| | (4) | Adhesion to crushed stone, points | | | | | | | | | (1) Pervouralsk | Is not regulated | 2 | 4 | 4 | 5 | 5 | | (2) Sangalyk | 2 | 4 | 4 | 5 | 5 | | (3) Bianca | 3 | 5 | 5 | 5 | 5 | | (4) Valegin Bor | 2 | 4 | 5 | 5 | 5 |
| | (5) | Penetration index | From −1 to +1 | 0.1 | −0.2 | −0,1 | 0,2 | −0,3 |
| | (6) | Brittleness temperature, °С | Not higher than minus 15 | Minus
22.9 | Minus
23.7 | Minus
25.7 | Minus
29.1 | Minus
28.8 |
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