Systems and methods for determining the absorption and specific gravity properties of compacted and loose material including fine and coarse aggregates
US6615643B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Oct 11, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2009/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods, systems, and computer program products determine absorption, specific gravity, and/or porosity of construction materials undergoing analysis corresponding to different measurements of material samples divided from a “parent” construction material sample. Dry and wet weights of the samples are obtained under different conditions.In certain embodiments, the material sample is an aggregate that is held in liquid in a volumetric container and the container with the liquid and aggregate is weighed. Another weight of a second sample can be obtained. The second sample is encased in an evacuated vacuum-sealed bag that is opened while immersed in a liquid bath, at which time the weight can be obtained. The weight data can be used to calculate the parameter of interest.Other methods obtain one wet weight of the sample when it is positioned into the liquid bath at atmospheric pressure and the other weight is obtained when the sample is first held in an evacuated state in a sealed (compressible) bag is opened in the liquid bath. The weights can be used to determine the two densities.Other methods employ evacuating a chamber holding a quantity of material sample under water…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.