Accession Number : AD0809275

Title :   PROPERTIES OF ROCKS TESTED IN ONE-DIMENSIONAL COMPRESSION.

Descriptive Note : Technical rept. Jul 64-Aug 66,

Corporate Author : UTAH UNIV SALT LAKE CITY DEPT OF MECHANICAL ENGINEERING

Personal Author(s) : Brown, Wayne S. ; DeVries, K. Lawrence ; Smith, James L.

Report Date : JAN 1967

Pagination or Media Count : 138

Abstract : An apparatus has been developed and used to obtain static stress-strain data on rock and soil samples in one-dimensional compression. This report describes the design and method of use, and reports test results obtained on several types of rock and sand specimens. A 4-inch diameter specimen with height up to 2 inches 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 exially. Axial load and deflection are recorded on an x-y plotter from signals received from the load cell and the 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 report. (Author)

Descriptors :   (*ROCK, COMPRESSIVE PROPERTIES), (*SOILS, COMPRESSIVE PROPERTIES), SOIL MECHANICS, MECHANICAL PROPERTIES, SAND, LABORATORY EQUIPMENT, LOADS(FORCES), STRESSES, EQUATIONS OF STATE, DEFORMATION, MEASUREMENT, IGNEOUS ROCK, STRAIN(MECHANICS), SEDIMENTARY ROCK, CONCRETE, HIGH PRESSURE, VISCOELASTICITY, WAVE PROPAGATION.

Subject Categories : Geology, Geochemistry and Mineralogy
      Soil Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE