wet sub-base
wet sub-base
(OP)
this site has a sand soil that we have been working with since august. we are at a 10 foot fill in 11000 sq foot area parking garage ramp (confinded by concrete no sides and sand below) . the sand has been within optimum moisture, density, and compacion of at least 98%. we are using a smooth drum vibratory roller. the site has not had problems with compaction or mosture untill...it was blanketed over night to protect from frost and in the morning when fill resumed the fill has started to roll or turn jello like, no ruting but 8- 12 inch defection. when tested sand again moisture is 2% over optimum. We chose to cover due to snow storm and stay off for a day. what can be done so this dosen't happen. and what happened





RE: wet sub-base
RE: wet sub-base
RE: wet sub-base
RE: wet sub-base
Are the underdrains temporary or permanent? Is there going to be pumping from the underdrains or is there a gravity outfall?
RE: wet sub-base
It sounds like the method for testing water content is screwy.
38 percent seems way too high for any saturated sand.
Are we looking at some form of moisture migration due to a cold surface zone drawing water there due to vapor pressure differences, cold above and warm below?
I think an experienced geotech is needed on the job.
OG
RE: wet sub-base
RE: wet sub-base
RE: wet sub-base
OG
RE: wet sub-base
RE: wet sub-base
RE: wet sub-base