Modified asphalt
OwnerG. Mohammed Memoninventor
Life of this patent
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Abstract
A method for manufacturing modified asphalt is characterized by adding a dispersion agent such as furfural or vegetable oil to a modifier material and then mixing the modifier material with asphalt. The dispersion agent facilitates dispersion of the modifier through the asphalt to form a homogeneous mixture. A first activator is added to the mixture to produce a devulcanized and stabilized asphalt material having improved rheological, separation and solubility characteristics. A micro activator is also added to the mixture to improve the ductility of the modified asphalt. The modifier material comprises granular crumb rubber or polymer.
Claims8
A method for making a modified asphalt, comprising the steps of:
- (a) adding a dispersion agent comprising at least one of furfural and vegetable oil to modifier material comprising at least one of a granular crumb rubber and polymer having an unsaturation to form a treated modifier material;
- (b) mixing the treated modifier material at a temperature of between 90° C. and 1500° C.;
- (c) adding the treated modifier material to hot asphalt;
- (d) mixing the combination of treated modifier material and hot asphalt;
- and,
- (e) adding a first acidic activator material to the mixture of treated modifier material and hot asphalt to produce a devulcanized and stabilized asphalt material having improved theological, separation and solubility characteristics.
A modified asphalt material, comprising:
- (a) hot asphalt;
- (b) a granular modifier material comprising at least one of crumb rubber and polymer having an unsaturation treated with at least one of a furfural and vegetable oil dispersion agent to facilitate dispersion of the modifier material within the asphalt;
- and
- (c) an activator material for activating the hot asphalt and modifier mixture to produce a product with improved rheological, separation, and solubility characteristics.
Dependencies are inferred from the claim text.