Asphalt recycling

Details Asphalt recycling Asphalt recycling

1983-12-01

1985-09-10

Jenkins, Robert W.

Agitating

Mortar mixer type

Methods

366 25, B28C 546

Patent

active

045402876

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.

REFERENCES:
patent: 4075710 (1978-02-01), Jakob
patent: 4096588 (1978-06-01), Mendenhall
patent: 4147436 (1979-04-01), Garbelman
patent: 4318619 (1982-03-01), Schlarmann
patent: 4332478 (1982-06-01), Binz

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