XP CEN/TS 17482

Bitumen and bituminous binders - Determination of acid number of bitumen - Potentiometric method

Le présent document décrit une méthode de détermination des constituants acides libres présents dans un bitume, conventionnellement désignés sous le terme " indice d'acide ". Le bitume est mis en solution dans un mélange de solvant et d'alcool. Les constituants acides sont dosés par une solution de potasse alcoolique. Le dosage est suivi par potentiométrie à l'aide d'un appareillage de titrage manuel ou automatique.

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