Process for recycle of asphalt-aggregate compositions

Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue

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Details

106273R, 250223R, 250572, 259157, 356200, 356209, 356212, 356237, C08L 9500, C09D 324, B28C 122, G01N 2116

Patent

active

039716660

ABSTRACT:
A process for recycling asphalt-aggregate compositions comprises heating pieces of the used composition to form a semi-fluid 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: 1894808 (1933-01-01), Witte
patent: 1960463 (1934-05-01), Taylor
patent: 2715517 (1955-08-01), Bojner
"Roads & Streets" Mar. 1966, pp. 104-110, R. W. Beaty, Where We've Come in Asphalt Plant Automation.

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