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Hadley 1976
Hadley, K. (1976). The effect of cyclic stress on dilatancy: Another look. Journal of Geophysical Research 81: doi: 10.1029/JB081i014p02471. issn: 0148-0227.

Twelve granite and gabbro cylinders have been stress-cycled under confining pressures 0.5, 1.5, and 5.0 kbar. No consistent trend appeared in the minimum stress required for dilatancy as a function of cycle number at the highest pressure, but at 1.5 kbar and below a increase was indicated. Dilatant volumetric grain at differential stresses corresponding to the frictional strength of the rock persists at a value of a few parts in 104 at all confining pressures and is essentially unaffected by cycling.

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Abstract

Journal
Journal of Geophysical Research
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American Geophysical Union
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