Asphalt recycling
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United States of America Patent
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-
Sep 10, 1985
Grant Date -
N/A
app pub date -
Dec 1, 1983
filing date -
Dec 2, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention provides a hot-mix asphalt recycling processes for reconstituting and upgrading old road materials. In usual hot-mix plants the asphaltic material is heated by a naked flame. Residual bitument in the asphalt is exposed to the naked flame from the burner, which can seriously damage the bitument and render it largely worthless. In order to reduce wastage, the invention provides for heating of aggregate in a heating zone, and supplying of the heated aggregate, usually cold reclaimed asphalt, and suitable binder material to a substantially flame-free mixing zone. By mixing these constituents in that zone, it is possible to produce a usable hot asphalt pavement mix with reduced asphalt wastage.
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Cited Art Landscape
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