Bituminous mix, preparation method, and uses thereof

Details Bituminous mix, preparation method, and uses thereof Bituminous mix, preparation method, and uses thereof

C - Chemistry, Metallurgy

08

L

C08L 95/00 (2006.01)

Patent

CA 2589869

The invention concerns a coating comprising a binder based on natural bitumen or oil industry bitumen. The binder comprises, additionally to said base product, a first additive consisting of a hydrocarbon wax which is substantially insoluble at room temperatures in the base bitumen of the binder and whereof the melting point, measured in accordance with the ASTM D3945 and D3418 standards, is higher than 85 °C. The binder further comprises a second additive consisting of a fatty acid ester wax, said wax being of synthetic, plant or fossil plant origin and having a melting point, measured in accordance with said standards, lower than 85 °C. The penetration of the base product, measured in accordance with the ASTM D1321 standard, is more than 70 tenths mm and not more than 220 tenths mm.

Cet enrobé comprend un liant à base de bitume naturel ou de bitume de l'industrie pétrolière. Le liant comprend, outre ce produit de base, un premier additif constitué par une cire d'hydrocarbure qui est sensiblement insoluble aux températures ambiantes dans le bitume de base du liant et dont le point de fusion, mesuré suivant les normes ASTM D3945 et D3418, est supérieur à 85~C. Le liant comprend en outre un second additif constitué par une cire d'ester d'acide gras, cette cire étant d'origine synthétique, végétale ou végétale fossile et ayant un point de fusion, mesuré suivant lesdites normes, inférieur à 85~C. La pénétrabilité du produit de base, mesurée selon la norme ASTM D1321, est supérieure à 70 dixièmes de mm et inférieure ou égale à 220 dixièmes de mm.

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