@@introductiontogeotechnical4976 Thank you! I am using the ASTM method D 4767, I understand that you are starting with a saturated drainage system, but I have been trying to figure out how you fully saturated the specimen while consolidating it. I am under the impression that you must saturate the specimen by applying back pressure before consolidation.
@@hollyclark509 you are correct. I use backpressure saturation. However, in this case I do it after the consolidation phase. It goes faster that way since the consolidation phase will also increase saturation. This means the consolidation data isn't in a saturated state, but that's OK for what I'm doing. If you really need saturated consolidation data, then you need to do the backpressure saturation before consolidating. If your soil is silty or sandy, you can also try do a 1D permeability test by creating a gradient across the sample. This will also increase saturation as some air flows out but it won't get the specimen to 99%+.
That cleared up my confusion really well! I may try the 1D gradient, but I think using backpressure saturation before consolidation will be OK for what I am doing! Thank you for taking the time to explain! @@introductiontogeotechnical4976
We just got a GeoJac and this video has been BY FAR the most helpful thing I've seen yet about how to setup the system.
Thanks. Be sure to let the folks at GeoTac know about it.
Good work sir especially for indian student because lack of equipment and skills .
would you show the difference between CD test (consolidated, drained), CU test (consolidated, undrained), Q-test, UU test ?
All these test are covered in this webcast th-cam.com/video/hq4UlLm8oIs/w-d-xo.html
Thanks for Easley and simply method for preparing but I ask about mesure of the diameter of the sample why you hadnt measured by the ruler
The Pi tape is much faster and more accurate. For info see www.pitape.com/instruction.htm
Thanks I have watched these videos about pi tape actually it is faster and more accurate than rule but we don't have this tools in our laboratory
@@teebamohammad7142 You can just use outside calibers.
@@introductiontogeotechnical4976 OK
What is the brand of trimming device you use? One of those would be very helpful for what I do.
The one I use comes from Humboldt (www.humboldtmfg.com/sample-trimmer-with-knife.html). Pricey but very good.
@@introductiontogeotechnical4976 Thank you! I am using the ASTM method D 4767, I understand that you are starting with a saturated drainage system, but I have been trying to figure out how you fully saturated the specimen while consolidating it. I am under the impression that you must saturate the specimen by applying back pressure before consolidation.
@@hollyclark509 you are correct. I use backpressure saturation. However, in this case I do it after the consolidation phase. It goes faster that way since the consolidation phase will also increase saturation. This means the consolidation data isn't in a saturated state, but that's OK for what I'm doing. If you really need saturated consolidation data, then you need to do the backpressure saturation before consolidating. If your soil is silty or sandy, you can also try do a 1D permeability test by creating a gradient across the sample. This will also increase saturation as some air flows out but it won't get the specimen to 99%+.
That cleared up my confusion really well! I may try the 1D gradient, but I think using backpressure saturation before consolidation will be OK for what I am doing! Thank you for taking the time to explain!
@@introductiontogeotechnical4976
Kindly i need to buy a mold like the one you used to trim the sample in thise vedio please advise about the supplier
www.humboldtmfg.com/sample-trimmer-with-knife.html
professor i am an undergraduate student and i would like to be your Mcs student