Method for producing bituminous compositions

a technology of composition and bitumen, applied in the direction of single unit paving, roads, roads, etc., can solve the problems of lack of control of the timing of ph-shifting chemistry, low cure and strength value, high air voids, etc., and achieve low interfacial viscosity, high interfacial bitumen solubility, and low marangoni effect
US20070039520A1Inactive Publication Date: 2007-02-22MEADWESTVACO CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
MEADWESTVACO CORP
Publication Date
2007-02-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention relates to bituminous compositions and methods of producing the same. More particularly, the invention relates to the production of bituminous compositions formulated with performance-graded bitumen-containing solvent-free bitumen emulsions which exhibit controllable, temperature-dependent interfacial rheology. When employed in paving applications, these bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to traditional hot mix paving compositions and at rates faster than traditional cold mix paving compositions.
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Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of PCT Application No. PCT / US2005 / 002916, filed Jan. 27, 2005, which claims priority from U.S Provisional Application No. 60 / 545,713, filed Feb. 18, 2004.BACKGROUND OF THE INVENTION

[0002] 1. Field Of Invention

[0003] This invention relates to bituminous compositions, methods of producing the same, and pavement made from said bituminous compositions. More particularly, the invention relates to the production of bituminous compositions formulated with solvent-free bitumen emulsions which exhibit controllable, temperature-dependent interfacial rheology.

[0004] 2. Description of the Related Art

[0005] Cold mix paving compositions are made by mixing bitumen emulsion with aggregate at ambient temperature (i.e., temperature less than about 40° C.). However, certain problems have traditionally been associated with the use of such compositions where no solvent is present. For example, when one employs a slow-s...

Claims

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