Title: Process and apparatus for recycle of asphalt-aggregate compositions

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.

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Inventors: Mendenhall, Robert L. (Las Vegas, NV, US)

Application Number: 487911
Filing Date: 1974-07-12
Publication_date: 1976-08-17
Assignee:
Primary Class(es): 366/144 366/213, 366/348, 432/112
Other Classes:
US Patent Ref:

1189772	Jul, 1916	Ammann	259/156.
1774649	Sep, 1930	Hepburn et al.	259/148.
2715517	Aug, 1955	Bojner	259/157.
3279892	Oct, 1966	Lesser et al.	432/112.
3840215	Oct, 1974	McConnanghay	259/158.

Other Refs:
Primary Examiner: Aegerter, Richard E.
Assistant Examiner:
Attorney: Seiler; Jerry R.