Reinforced sulphur-asphalt composites

Details Reinforced sulphur-asphalt composites Reinforced sulphur-asphalt composites

C - Chemistry, Metallurgy

08

L

6/169

C08L 95/00 (2006.01) C08K 3/06 (2006.01)

Patent

CA 1042610

ABSTRACT A sulphur-bituminous composite material consisting essentially of 60-75% by weight sulphur and 25-40% by weight bituminous material, and optionally containing a small amount of a fibrous or flake reinforcing material and usually with a filler which is suitable for use as a self- compacting road or pothole repair material. A feature of the composite is the presence of two continuous phases in the composite which is achieved either by mixing solid particulate sulphur with a softened bituminous material at a temperature in the range 120-150°C or by mixing liquid sulphur with liquid bituminous material with a sufficient shearing-mixing action to disperse the liquid sulphur as an emulsion with the bituminous material 80 as to provide on cooling a continuous, rigid, crystalline and porous sulphur skeleton in the composite.

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