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I get a monthly flyer from AdTek (Advanced Calibrations) in Boring, Oregon with a huge list of used Geotech/CMT equipment they have for sale. I've never sold anything to them, but they do a good job in my annual calibrations and equipment repair for me.

I think the colleague may be referring to the initial saturation of the lines, prior to the saturation of the specimen. However, at this point, an insignificant amount of air may be driven into solution. Upon setup of the triaxial cell and sample mounting, some air inevitably is trapped...

I know how much of a pain this can be for interpretation. The nearly asymptotic behavior of the line as particle lubrication continues with no more retention of water is frustrating. I often see a mini peak of the curve to the left of this and would consider it more likely the peak of field...

Anybody out there have any opinions about the shearing rate for a consolidated, undrained triaxial test for a silt with a PI of 3, and ~5% fine sand? As would be expected, the consolidation stages were quick (relative to clay, of course) and yielded a t50 of 0.5 min. Using ASTM's recommended...

Does anybody have personal experience with a particular automated data acquisition system that they would highly recommend? I'm looking to upgrade from our current system, which has caused years of frustration, but remained the only budget-feasible option until now. At the moment, I'm leaning...