Research Article
Polyfunctional Modifiers for Bitumen and Bituminous Materials with High Performance
Table 7
Surface tension of the bitumen samples.
| Bitumen samples | Original | PFM content, wt.% | 0.6 | 0.8 | 1.0 | 1.2 |
| Average value, , mN/m | 33.04 | 31.38 | 31.34 | 31.46 | 31.42 |
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