Measuring and testing – Moisture content or absorption characteristic of material
Reexamination Certificate
2006-01-17
2008-07-22
Williams, Hezron E. (Department: 2856)
Measuring and testing
Moisture content or absorption characteristic of material
C073S061410, C073S038000, C073S866000, C366S139000
Reexamination Certificate
active
07401501
ABSTRACT:
A method of determining liquid absorption of an aggregate comprises providing a shaker apparatus, a vacuum source and a container; placing a sample of the aggregate in the container; adding liquid to the container sufficient to reach a calibration mark on the container; weighing the sample and liquid; mounting the container to the shaker apparatus; connecting the vacuum source to the container; agitating the sample and liquid with the shaker apparatus; applying a vacuum to the sample and liquid with the vacuum source; after the agitation and vacuum steps, adding liquid to the container sufficient to again reach the calibration mark on the container; again weighing the sample and liquid; and subtracting the initial weight of the sample and liquid from the final weight of the sample and liquid in order to determine the liquid absorption of the aggregate.
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Lockwood Mark D.
Peake Steven C.
Barnstead Thermolyne Corporation
Shah Samir M.
Williams Hezron E.
Wood Herron & Evans LLP
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