Nuclear gauge with compensation for sample of insufficient...

Details Nuclear gauge with compensation for sample of insufficient... Nuclear gauge with compensation for sample of insufficient...

G - Physics

01

N

G01N 23/00 (2006.01) G01N 23/02 (2006.01)

Patent

CA 2061020

Method and apparatus for determining the asphalt content of a bituminous paving mix wherein Marshall plug samples (21, 22) of the bituminous paving mix are subjected to a neutron source (24) and the neutrons that are thermalized by hydrogen nuclei present in the Marshall plug sample are detected and counted to provide an indication of the asphalt content of the sample. A neutron moderating substance, such as a polyethylene sample holder (19) having receptacles for closely fitting the Marshall plug samples, is included with the sample pan (17) to increase the number of thermalized neutrons resulting from the interaction of neutrons with hydrogen nuclei present in the sample.

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