7:10 You're just compacting it arbitrarily. What will you do if you're asked to conduct this triaxial test for a 60% relative density let's say? I'm asking this question coz I'm facing this problem. Can you please give me some suggestions. How can I achieve a specific relative density for sand to be tested in a triaxial test? Hope you would help me, Sir! This video has really helped me. The only bug is that of relative density. But hope you'll help me soon. Thanks again. And thumbs up! ❤👍❤
They are just demonstrating the procedure to prepare the sample to a non-specific relative density. When a target relative density is known you could try calculating the required mass for the sample size and tamper in 3 layer. Additionally you can try the dry or wet pluviation technique, where you let sand fall from a constant height into your sample. There are a few videos on TH-cam that demonstrate this. Hope is helpful.
Please show how to flush the dry sand sample by de-aired water and CO2, now we try saturating the sand sample but it seems to be not saturated, B value is around 0.7 - 0.8 with really high cell and back pressure (600 - 700 kPa)
Hi Pulpong. I'm VJ Tech's Geotech Engineer; I'll add videos to show flushing techniques to my list. If you don't flush the sample you will need to get to much higher cell and back pressures (>1000kPa) to saturate the sample.
Thanks for the detailed video :)
Could u please explain the process to saturate sandy soil. And bit about back pressure and negative pressure
Thanks.
7:10 You're just compacting it arbitrarily. What will you do if you're asked to conduct this triaxial test for a 60% relative density let's say? I'm asking this question coz I'm facing this problem. Can you please give me some suggestions. How can I achieve a specific relative density for sand to be tested in a triaxial test? Hope you would help me, Sir! This video has really helped me. The only bug is that of relative density. But hope you'll help me soon. Thanks again. And thumbs up! ❤👍❤
They are just demonstrating the procedure to prepare the sample to a non-specific relative density. When a target relative density is known you could try calculating the required mass for the sample size and tamper in 3 layer. Additionally you can try the dry or wet pluviation technique, where you let sand fall from a constant height into your sample. There are a few videos on TH-cam that demonstrate this. Hope is helpful.
@@jorgemendoza3500 I need to understand how to do moist tamping for my project
Please show how to flush the dry sand sample by de-aired water and CO2, now we try saturating the sand sample but it seems to be not saturated, B value is around 0.7 - 0.8 with really high cell and back pressure (600 - 700 kPa)
Hi Pulpong. I'm VJ Tech's Geotech Engineer; I'll add videos to show flushing techniques to my list. If you don't flush the sample you will need to get to much higher cell and back pressures (>1000kPa) to saturate the sample.