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Title: Physical property tests of rock cores from the MIXED COMPANY Event III site
Authors: United States. Defense Nuclear Agency.
Stowe, Richard L.
Keywords: Constitutive properties
Rock cores
Rock properties
Rock test (laboratories)
Static tests
Publisher: Concrete Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Miscellaneous paper (U.S. Army Engineer Waterways Experiment Station) ; C-75-2.
Description: Miscellaneous paper
Abstract: Static material property tests were conducted on selected rock cores, predominantly sandstone, taken from the MIXED COMPANY Event III test site. The results of these tests along with other static and dynamic tests results were used in the development of representative constitutive properties used in preshot ground motion calculations for Event III. Natural densities ranged from 2.18 to 2.6 g/cm3, and moisture contents ranged from 0.6 to 6.2 percent. Tensile test results indicate that the horizontal in situ tensile strengths will equal or exceed the vertical strengths. It is believed that matrix . composition and moisture contents greatly influence the material response. The materials tested under triaxial stress conditions were divided into three groups based upon characteristic material response. The triaxial failure data indicate that two material failure envelopes exist: one representing the stronger and drier material, and one representing the weaker and wetter material. The failure envelopes show little variation considering the wide range in density, moisture content, and specimen matrix composition, and suggest a brittle material behavior for the stress states used in this study. Limited uniaxial test results indicate that total structural collapse did not occur at peak stresses of 4.2 kbars.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Miscellaneous Paper

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