9. Special bitumens
As stated in EN 12597, a special bitumen is a bitumen manufactured using processes and selected bases to give it special properties that enable it to meet certain more stringent requirements for road or industrial applications.
A note in paragraph 2.5.3 of standard EN 12597 specifies that this definition includes, but is not limited to, multigrade bitumens, emulsifiable bitumens and pigmentable bitumens.
9.1 Use according to nature
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Multigrade bitumens
They are characterized by a positive Pfeiffer penetrability index of between 0 and 2. Their rheological properties provide an answer to the risk of rutting in wearing courses, while ensuring good resistance to thermal cracking.
They are suitable for formulating...
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Special bitumens
Special modified bitumens
References
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