Methods and Compositions for Recycled Asphalt Shingles Material
AssigneeICL Performance Products LP
InventorsRené Maldonado, Enrique Elladio Romagosa, Darrel Fee, Olga Shulga, Laurand Lewandowski
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Abstract
Certain aspects of the present invention are drawn recycled asphalt shingles-modified asphalt binder blends, mixes, and pavements, especially those comprising a mineral acid. Recycled asphalt shingles material may come from manufacturer asphalt shingle waste or from consumer asphalt shingle waste. It has been discovered that addition of a mineral acid significantly improves various rheological properties. Methods of making such asphalt binders, mixes, and pavements and their use are also disclosed.
Claims39
An asphalt mix comprising an asphalt binder, recycled asphalt shingles material, aggregate, and a mineral acid, wherein the recycled asphalt shingles material is selected from the group consisting of manufacturer asphalt shingle waste, consumer asphalt shingle waste, and combinations thereof.
A method of producing a mineral acid-modified recycled asphalt shingles material-containing asphalt mix, the method comprising the steps of:
- (a) mixing an asphalt binder and a mineral acid to form a binder-acid intermediate;
- and (b) mixing the binder-acid intermediate with recycles asphalt shingles material (RAS) and aggregate, thus producing a mineral acid-modified recycled asphalt shingles material-containing asphalt mix, wherein the recycled asphalt shingles material is selected from the group consisting of manufacturer asphalt shingle waste, consumer asphalt shingle waste, and combinations thereof.
A method of producing a mineral acid-modified recycled asphalt shingles material-containing asphalt mix, the method comprising the steps of:
- (a) mixing an asphalt binder and recycled asphalt shingles material (RAS) to form a binder-RAS intermediate;
- and (b) mixing the binder-RAS intermediate with a mineral acid and aggregate, thus producing a mineral acid-modified recycled asphalt shingles material-containing asphalt mix, wherein the recycled asphalt shingles material is selected from the group consisting of manufacturer asphalt shingle waste, consumer asphalt shingle waste, and combinations thereof.
An asphalt pavement comprising an asphalt binder, recycled asphalt shingles material, aggregate, and a mineral acid, wherein the recycled asphalt shingles material is selected from the group consisting of manufacturer asphalt shingle waste, consumer asphalt shingle waste, and combinations thereof.
Dependencies are inferred from the claim text.