Thermal and mechanical properties of Hanford basalts compilation and analysis

TL;DRAbstract

Thermomechanical properties of Umtanum flow basalt are essential for further analyses and design of a nuclear waste repository at Hanford, now planned to be placed within the Umtanum flow. The properties of Pomona Member basalt are essential for the analysis of data from the Near-Surface Test Facility (NSTF) at Gable Mountain. This report presents a compilation and analysis of all thermomechanical laboratory data from Hanford basalts and a summary of data for use in analyses involving Umtanum or Pomona basalts. Umtanum flow basalt is essentially similar to basalts of other flows of the Grande Ronde Formation, of which the Umtanum Flow is a member. However, Umtanum flow basalt is lighter and weaker than the younger Pomona Member basalt. Correlations and analyses herein indicate the relationship between the two basalts and suggest how extrapolation from one to the other may be accomplished. Thermal tests are affected by details of testing procedure. Differences between Umtanum and Pomona

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