Dhoon
Geotechnical
- Mar 10, 2011
- 11
Dear all,
At one of our project site tank is under hydro-testing. Tank was filled with water and settlements were measured for some duration. Then, tank was emptied for maintenance for one month duration and again filled up to the initial stage.
After filling of water up to the initial stage , settlement exceeded from its previous value by 20%. Since water was filled up to the initial level (same stress on soil as of previous), it was expected that re-compression settlement will occur almost same as of before. Refilling of tank is expected once in a year.
Tank is pile supported and soil in influence zone is clay CL-CI. Don't have any laboratory test data available.
Could anybody explain the reason of excess settlement even stress is at same level as before ?
How we can ensure that settlement in the next maintenance period (re-filling of tank) will be less than previous observed settlement (due to refilling) and after some time recompression settlement will not exceed its value ?
Please provide ant reference material if anybody have.
Regards
At one of our project site tank is under hydro-testing. Tank was filled with water and settlements were measured for some duration. Then, tank was emptied for maintenance for one month duration and again filled up to the initial stage.
After filling of water up to the initial stage , settlement exceeded from its previous value by 20%. Since water was filled up to the initial level (same stress on soil as of previous), it was expected that re-compression settlement will occur almost same as of before. Refilling of tank is expected once in a year.
Tank is pile supported and soil in influence zone is clay CL-CI. Don't have any laboratory test data available.
Could anybody explain the reason of excess settlement even stress is at same level as before ?
How we can ensure that settlement in the next maintenance period (re-filling of tank) will be less than previous observed settlement (due to refilling) and after some time recompression settlement will not exceed its value ?
Please provide ant reference material if anybody have.
Regards