On SOIL dilation angle
On SOIL dilation angle
(OP)
How to obtain soil dilation angle from UC triaxial test results
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RE: On SOIL dilation angle
RE: On SOIL dilation angle
I'm confused by this question. "UC triaxial" test. I'm used to "UC" as an unconfined compression test - it's triaxial, with sigma 3 as the atmospheric pressure.
Also, I'm not clear on the "dilation" angle. Dense granular materials will dilate during shear due to the effects of interlocking of the material. Is this "dilation angle" the difference in failure envelope angle between the material sheared with no volume change (no dilation, no contraction) versus dilation?
RE: On SOIL dilation angle
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which is lower than peak and constant-volume phi.
at this point I confess I'm not aware how it could be usefully applied to everyday geotechnical calculations.
RE: On SOIL dilation angle
RE: On SOIL dilation angle
Dilation Angle is the ratio of the (shear stain /dilative or contractive strain). When doing analyses or design you should consider it. It is important when dealing with frictional materials;e.g Sand. e.g. Row (1966) has shown that actual friction angle is directly influenced by dilation angle. I appreciate that some practictioners do not know what it is since in Soil Mechanics there is (unfortunately) huge gap between research and industry.
Bolton's Paper posted By Mccoy is also very good