ISSN:
1741-2765
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract An apparatus has been developed and used to obtain static stress-strain data on rock and soil samples in one-dimensional compression. This paper describes the design and method of use, and reports test results obtained on several types of rock and sand specimens. A 4-in.-diam specimen with height up to 2 in. is contained in a thin-walled steel cylinder. This cylinder is contained in the main pressure vessel which has a pressure cavity surrounding the specimen. Load is applied through a load cell on top of the specimen by a hydraulic press. An operator maintains a constant zero balance on strain gages bonded to the thin, steel cylinder containing the specimen by pumping hydraulic fluid into the pressure cavity, thus nullifying the tendency of the test specimen to expand laterally as it is compressed axially. Axial load and deflection are recorded on anx−y plotter from signals received from the load cell and a deflectometer mounted on the load cell. This apparatus has been successfully used to obtain data on rocks to axial stresses of 75,000 psi and on sand to 30,000 psi. Test data for both rocks and sand are presented in this paper.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02326301
