Paving binders and manufacturing methods

Details Paving binders and manufacturing methods Paving binders and manufacturing methods

C - Chemistry, Metallurgy

09

J

C09J 195/00 (2006.01) C08K 3/04 (2006.01) C08K 3/06 (2006.01) C08K 3/36 (2006.01)

Patent

CA 2496823

Solid, low-cost paving binder prepared by admixing sulfur, paving grade asphalt (AC) asphalt, and a siliceous filler such as fly ash and silica material, and solidifying the product into preferably flaked, pellet or pastille forms. Carbon black is another possible ingredient of the paving binder. The solid paving binder has non~sick non-flow properties within a wide range of ambient temperatures, and it can be stored solid for subsequent use in paving applications. Properties such as the color, radiation-resistance, and odor of the paving binder can be controlled in the manufacturing process.

L'invention porte sur des liants de pavage bon marché sous forme solide obtenus en mélangeant du soufre, de l'asphalte type pavage et une charge de silice telle que des cendres volantes ou des matériaux siliceux et éventuellement de noir de carbone puis en solidifiant le produit sous forme de copeaux, de grains ou de pastilles. De tels liants ne collent ni ne fondent dans une large plage de températures ambiantes, et peuvent donc se stocker sous forme solide en vue de leur utilisation ultérieure. Le procédé de fabrication permet d'en faire varier la couleur, la résistance au rayonnement et l'odeur.

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