Chemical Grout /Ground Stability
Chemical Grout /Ground Stability
(OP)
We have been asked to stabilize by chemical grouting .Ground that consists of fairly liquid sand for a building foundation. We have done this a few times before in the past with mixed results. I would like some comments on currently appropriate grouts and any previous experiences and problems with this technique.





RE: Chemical Grout /Ground Stability
RE: Chemical Grout /Ground Stability
RE: Chemical Grout /Ground Stability
I would VE with the use of compaction grout or possibly look at jet grouting, whichever turns out to be cheaper. In terms of equipment usage and mobilization, compaction grouting is cheaper than both chemical and jet grouting.
In addition, permeation grout can be tricky at times, ie. not going where you intended, always taking the path of least resistance. I guess this is where you have had limited success with chemical grout in the past. Such is not the case with JG and CG. I assume you have borings defining the site stratigraphy, so to verify the effectiveness of the grouting program, pre and post CPTs should suffice.
RE: Chemical Grout /Ground Stability
RE: Chemical Grout /Ground Stability