Method for producing bitumen compositions

Details Method for producing bitumen compositions Method for producing bitumen compositions

2007-09-10

2010-11-16

Brunsman, David M (Department: 1793)

Compositions: coating or plastic

Coating or plastic compositions

Bituminous material or tarry residue

C524S060000

Reexamination Certificate

active

07833338

ABSTRACT:
The present invention relates to bituminous compositions suitable for use in paving applications containing bitumen emulsion of performance-grade bitumen that is substantially free of volatile solvents and made by controlling temperature-dependent interfacial rheology through the use of selected emulsifiers. The invention bituminous paving compositions are suitable for the construction of load-bearing pavements with improved compaction to densities similar or superior to those achieved in the conventional hot mix bituminous paving compositions. Cure rate of the invention bituminous compositions is higher than those of cold mix bitumen emulsion-based paving compositions, and at least equal to those of hot mix bituminous paving compositions. Additionally, the invention bituminous compositions develop adhesive strength and load-bearing strength properties at rates comparable to those of hot mix bituminous paving compositions, and at rates faster than those of cold mix bituminous paving compositions.

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