Warm mix asphalt binder compositions containing lubricating additives
AssigneesA.L.M. Holding Company, Ergon Asphalt & Emulsions, Inc.
InventorsGerald H. Reinke, Gaylon L Baumgardner, Steven L. Engber
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Abstract
The present invention provides a functionally dry warm mix asphalt binder composition modified with lubricating agents or additives that can be mixed with aggregate and compacted at temperatures substantially below asphalt binder compositions that do not contain the disclosed lubricating additives.
Claims21
An asphalt paving composition comprising i) functionally dry, essentially water-free non-foamed asphalt binder containing ii) lubricating additive comprising lubricating surfactant, lubricating acid, or combination thereof, mixed with iii) uncompacted aggregate, wherein the functionally dry, essentially water-free non-foamed binder coats the uncompacted aggregate, and the asphalt paving composition is compactable to at least 91% of theoretical density at, and is at, a temperature at least 30° F. lower than a temperature needed for compaction of a comparison asphalt paving composition that does not contain the lubricating surfactant, lubricating acid or combination thereof.
Dependencies are inferred from the claim text.