Low-strength soil grading
Low-strength soil grading
(OP)
Greetings,
What type of equipment is available for grading and earth moving of low strength soils?
I'm working on a site that has bauxite residue, which is over 50 yrs old. When the residue is originally placed, it is pumped and has the consistency of pudding. Typically, the residue has a dry crusty layer that can be scraped off and the low-strength residue is underneath. I think grading or excavating is done incrementally by taking off the crusty layer, waiting for it to dry, and then removing the second crusty layer.
Does anyone know of a better way?
Thanks, in advance, for your assistance.
Denton
What type of equipment is available for grading and earth moving of low strength soils?
I'm working on a site that has bauxite residue, which is over 50 yrs old. When the residue is originally placed, it is pumped and has the consistency of pudding. Typically, the residue has a dry crusty layer that can be scraped off and the low-strength residue is underneath. I think grading or excavating is done incrementally by taking off the crusty layer, waiting for it to dry, and then removing the second crusty layer.
Does anyone know of a better way?
Thanks, in advance, for your assistance.
Denton





RE: Low-strength soil grading
RE: Low-strength soil grading
RE: Low-strength soil grading
Thread158-94844
RE: Low-strength soil grading
One of the things we are considering is the use of gypsum to stabilize (both pH and strength). The gypsum is available on site.
Does anyone know how the effectiveness of gypsum addition compares to lime in terms of stabilizing (not neutralizing)? Also, in my case, the pH is already around 10 or so and lime would not help reduce the pH.
Since my original post, I've found a company (Wilco) that has a specialized piece of equipment that can excavate slurries. The costs is about 3 times that of a convential method, though.
GeoPaveTraffic - Regarding the drag line, I will consider the applicability. I think that it may not work in this situation, b/c the residue may be too competent. I'm looking to grade about 220 acres, so the mob cost will most likely not be too high.
SirAl - I'm looking to cut up to 10 feet in some areas.
RE: Low-strength soil grading
RE: Low-strength soil grading
RE: Low-strength soil grading
RE: Low-strength soil grading