Polymer-asphalt mixing process

Details Polymer-asphalt mixing process Polymer-asphalt mixing process

C - Chemistry, Metallurgy

08

L

400/1608

C08L 95/00 (2006.01) C08J 3/00 (2006.01) C08J 3/22 (2006.01)

Patent

CA 1327085

POLYMER-ASPHALT MIXING PROCESS Abstract of the Disclosure The present invention relates to a two stage process for the incorporation of plastic and ethylene-propylene rubber into asphalt. In the first mixing stage, a rubber-rich masterbatch is prepared by mixing asphalt, plastic and the rubber. In the second stage of mixing, additional asphalt is mixed with the masterbatch. The first stage is completed in polymer mixing equipment while the second stage is completed in asphalt mixing equipment. The present process provides a convenient process to incorporate polymer into asphalt, in comparison to prior art processes wherein the polymer is added directly to the asphalt.

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