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|Title:||Tests of rock cores, Mountain Home, Idaho, and Fairchild, Washington areas|
|Authors:||Space and Missile Systems Organization (U.S.)|
United States. Air Force. Systems Command.
Saucier, K. L.
|Keywords:||Fairchild, Washington, area|
Mountain Home, Idaho, area
|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-69-12.|
Abstract: Laboratory tests were conducted on rock core samples received from core holes drilled in the basaltic flows of the Mountain Home, Idaho, and Fairchild, Washington, areas. The results were used to determine the quality and uniformity of the rock to depths of 200 feet below ground surface. Specific gravity, porosity, and compressive strength tests indicated the rod. from both areas to be highly variable in physical properties. The outstanding variables were the degree of vesicularity for the Mountain Home rock and the vesicularity and a pattern of incipient fracturing for the Fairchild rock. The denser rock from the Fairchild area appeared to be inherently stronger and more rigid (i.e., higher moduli and less hysteretic effect in stress-strain relations) than the Mountain Home ba3alt. However, the extreme variability in physical test results of the material from both areas appears to preclude classification of either as a competent, uniform, hard rock medium. Note: The file size is very large. Please allow additional minutes for downloading.
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