Methods and apparatus for sealing and analyzing material samples including uncompacted bituminous samples according to water displacement testing methods
US6668647B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2000 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Aug 23, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N9/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Water-resistant preformed resilient bags are applied to a porous material specimen having a coarse external surface to provide for more consistent measurement results in water displacement tests. The preformed bag is configured to collapse and substantially conform to the material specimen's external surface and to provide planar collapsed portions extending away from the specimen. The preformed bags are precision manufactured and each applied to a respective specimen in a manner in which the bag consistently displaces the same volume of water when used in water displacement tests over many specimens. The volume of the bag can be accounted for when obtaining the volume of the specimen. The method of sealing the specimen includes inserting the specimen into a preformed bag and collapsing and sealing the bag such that is conformal to the external surface of the specimen. The system includes a preformed bag configured to receive a material specimen therein, a vacuum apparatus for removing the air from the bag, and a sealing means for sealing the bag. The system can be used to determine the density of either/or compacted or uncompacted materials. The methods and systems can be used in …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.