Triaxial apparatus for testing particulate material and method of using the same
US4502338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1983 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | May 16, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0256
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A triaxial cell apparatus for conducting constant lateral stress tests, constant volume tests and zero lateral strain tests on particulate materials. Pressure and volume measuring devices are in communication with a flexible inner specimen cylinder and with a rigid outer cylinder mounted on the apparatus frame. A control panel permits the compressed air confining stress to be regulated as axial stress is applied through a piston assembly having the same cross-sectional area as the specimen cylinder. The different tests are conducted by various combinations and hookups between the pressure and volume measuring devices and the control panel. The tests can be performed on a specimen so that the stress history of that material may be determined for later use in confining structure design.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.