Sulfur additives for paving binders and manufacturing methods

Details Sulfur additives for paving binders and manufacturing methods Sulfur additives for paving binders and manufacturing methods

C - Chemistry, Metallurgy

09

D

C09D 1/00 (2006.01) C08L 95/00 (2006.01) C09D 195/00 (2006.01)

Patent

CA 2454595

Sulfur, useable in as an additive to asphalt in the preparation of asphalt binders can be plasticized by addition of carbon and further treated with amyl acetate. This plasticized sulfur can be formed into solid particles and then added to asphalt as either a minority or majority component to create desired paving binder compositions. The solid plasticized sulfur has non-stick non-flow properties within a wide range of ambient temperatures, and it can be stored solid for subsequent use in paving applications.

Selon l'invention, du soufre utilisé comme additif d'asphalte dans la préparation de liants d'asphalte peut être plastifié par addition de carbone, puis traité avec de l'acétate d'amyle. Le soufre plastifié peut être formé en particules solides puis ajouté à l'asphalte sous forme de constituant principal ou secondaire en vue d'obtenir des compositions de liants de revêtement souhaitées. Ce soufre plastifié solide présente des propriétés anti-adhérentes sans écoulement dans une large gamme de températures ambiantes, et peut être stocké à l'état solide en vue d'une utilisation subséquente dans des applications de revêtement.

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