Asphaltic compositions containing fibrous materials with...

Details Asphaltic compositions containing fibrous materials with... Asphaltic compositions containing fibrous materials with...

C - Chemistry, Metallurgy

08

L

C08L 95/00 (2006.01)

Patent

CA 2339476

A method is described for the modification of asphaltic compositions such that cellolosic fibers are not degraded by the asphalt at elevated temperatures. This is achieved by the addition of addition of certain inorganic or organic alkaline materials to the composition. As a further embodiment of the invention, a method is also described for the dispersion of cellulosic fibers in liquid asphalt in such a way as to obtain a thermally stable product with defined viscoelastic properties. This comprises blending the fibers with asphalt, fibers and alkaline additives under controlled mixing conditions such that the required viscometric specification is attained.

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