Soil Mixing Information / Opinions

[grouterup]

Does anyone have experience with dry soil mixing in soft clay (medium plasticity, sensitivity 5-15)? Would jet grouting be possible/appropriate

Is it possible to begin soil-cement columns at a certain depth below grade, similar to jet grouting, rather than at the existing ground surface?

Also, what is the maximum treatment depth below grade? I've come across 30' as a rule, but am wondering whether 40 or 50 feet is possible.

I know this is a lot of questions at once, but hopefully someone can sort through it.

Thanks in advance!

 

[Geocontractor]

grouterup,

need to know water content of soil. dry soil mixing ususally works better with an adequate supply of ground water. I believe that the columns can begin to be formed at depth while the tool is pulled to the surface. Fairly new technology in the US so I am not too familiar.

 

[grouterup]

Geocontractor,

The water content of the soil is approx 20-40%

If the columns are begun at depth, can they be stopped before reaching the surface or a different stratum? We want to surgically treat this problem clay.