Batch method of recycling asphaltic concrete
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United States of America Patent
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Jun 14, 1983
Issued Date -
N/A
app pub date -
May 11, 1981
filing date -
Apr 14, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A batch method of producing asphalt-aggregate composition having a temperature of at least about 200.degree. F. and at least about 20% used asphaltic concrete comprises heating solid particles of the used material in a first drum to a temperature of at least about 150.degree. F., separately heating virgin aggregate in a second drum to a temperature of less than about 400.degree. F., and mixing the two materials, preferably with the addition of hot liquid or paving grade asphalt. In a second embodiment, unheated used asphaltic concrete is mixed with heated used asphaltic concrete and heated virgin aggregate.
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