Bituminous composition
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United States of America Patent
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Feb 16, 2016
Grant Date -
Sep 5, 2013
app pub date -
Apr 19, 2013
filing date -
Feb 18, 2004
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Abstract
A bituminous composition comprising a bitumen emulsion in an amount from about 2% to about 10% by total weight of the bituminous composition, and aggregate in an amount from about 90% to about 99% by total weight of the bituminous composition, wherein the bituminous composition is at a temperature range of about 50° C. to about 140° C. The bitumen emulsion comprises hard bitumen in an amount from about 50% to about 75% by total weight of the bitumen emulsion, the hard bitumen being characterized by a penetration number of about 100 dmm or less at 25° C. as determined according to the AASHTO Method T49, and an emulsifier in an amount from about 0.05% to about 2% by total weight of the bitumen emulsion, the emulsifier having a Hildebrand solubility parameter of at least of about 19 (MPa)½. Also disclosed are the methods of producing and using such bituminous compositions.
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