FOAMED BITUMINOUS EMULSION
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United States of America Patent
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Issued Date -
Jul 26, 2012
app pub date -
Jan 20, 2011
filing date -
Jan 20, 2011
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Abandoned
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Abstract
The invention is a foamed bituminous emulsion comprising a bituminous emulsion and vapor entrained within the bituminous emulsion, such that the foamed bituminous emulsion is a frothy mass of foam. The temperature of the foamed bituminous emulsion may be less than 100° C., less than 75° C., or less than 50° C. The vapor entrained within the bituminous emulsion may have a volume greater than 5%, 25%, or 50% by volume of the volume of the bituminous emulsion. The foamed bituminous emulsion may be combined with paving materials to produce a foamed bituminous emulsion paving mixture. A layer may by produced by forming a bituminous emulsion; foaming the bituminous emulsion to produce a foamed bituminous emulsion, where foaming the bituminous emulsion comprises causing vapor to become entrained within the bituminous emulsion; combining the foamed bituminous emulsion with paving materials to produce a paving mixture; and applying the paving mixture to an existing surface to form a new surface. The method may further comprise compacting the new surface. The paving mixture may have a temperature less than 100° C., less than 75° C., or less than 50° C. when applied to the existing surface.
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