More than 2,685 feet of NX wireline bedrock core and 150 split-spoon samples representing 947 feet of glacial drift were recovered from nine test holes drilled in Kane, Du Page, Kendall and De Kalb counties of northeastern Illinois. On-site observations established the lithology, drilling rate, fracture frequency, rock-quality designation, joint and fracture character of the bedrock, and blow counts and approximate unconfined compressive strength for the drift. Post-drilling operations included borehole testing for in-situ geophysical characteristics and permeability. Laboratory tests on bedrock included tensile strength, triaxial strength, and unconfined compressive strength; and on the drift, particle-size distribution and moisture content.
|Original language||English (US)|
|Title of host publication||Environmental Geology Notes (Illinois State Geological Survey)|
|State||Published - 1987|
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