Process and apparatus for recycle of asphalt-aggregate compositi

Details Process and apparatus for recycle of asphalt-aggregate compositi Process and apparatus for recycle of asphalt-aggregate compositi

1974-07-12

1976-08-17

Aegerter, Richard E.

Heating

Work chamber having heating means

259157, 432112, B28C 500

Patent

active

039750027

ABSTRACT:
A process for recycling asphalt-aggregate compositions comprises heating pieces of the used composition to form a semifluid or viscous composition, detecting the composition's asphalt deficiency and adding the proper amount of make-up asphalt. The composition is heated in a rotating cylindrical oven to achieve homogeneity, the viscous composition is drawn off, detected for asphalt deficiency, the proper amount of asphalt is added and the composition is then stored until required for use. Asphalt deficiency is detected by exposing the composition to a light source and measuring the amount of light reflected.

REFERENCES:
patent: 1189772 (1916-07-01), Ammann
patent: 1774649 (1930-09-01), Hepburn et al.
patent: 2715517 (1955-08-01), Bojner
patent: 3279892 (1966-10-01), Lesser et al.
patent: 3840215 (1974-10-01), McConnanghay

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