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US 12,084,577 B2Granted
Asphalt emulsion surface treatment containing sterol
AssigneesA.L.M. Holding Company, Ergon Asphalt & Emulsions, Inc.
InventorsGerald H. Reinke, Gaylon L. Baumgardner, Andrew Hanz
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Abstract
Pavement aging can be reduced by applying to an asphalt-containing pavement a topcoat layer or a surface treatment containing asphalt binder emulsion with sterols.
Claims13
A method of road paving comprising:
- providing sterol-containing asphalt binder emulsion, wherein sterol is added to an asphalt binder from 0.5 to 15 wt. % of the sterol based on the asphalt binder before emulsification;
- combining the sterol-containing asphalt binder emulsion with aggregate to form an asphalt paving material;
- applying the asphalt paving material atop an asphalt pavement layer;
- and
- compacting the applied asphalt paving material to form a road pavement having a sterol-containing topcoat layer.
2 more elements
Dependencies are inferred from the claim text.