|
|
Article: Iowa Inventors Develop Aggregate Liquid Absorption Determining Method
- Article from:
- US Fed News Service, Including US State News
- Article date:
- August 5, 2008
CopyrightCopyright © HT Media Ltd. All Rights Reserved. Provided by ProQuest LLC. (Hide copyright information)
|
ALEXANDRIA, Va., Aug. 5 -- Mark D. Lockwood and Steven C. Peake, both of Dubuque, Iowa, have developed an aggregate liquid absorption determining apparatus.
According to the U.S. Patent & Trademark Office: "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 ...