Grouting Voids Left After Temporary Sheet Pile Removal

[theCorkster]

I'm working on a project that will involve temporary shoring with sheet piling in order to expand a waste treatment plant located with about 100 feet of an existing flood levee. Excavations will be on the order of 20 to 25 feet deep, of various sizes, and site is located on alluvium consisting of sands, some gravel, clay and silt (lenticular disposition).

After completion of construction, I want to grout voids created by removal of the sheet piling to address the potential for groundwater seeping to the surface. I'm planning on using a cementitious grout with sand.

Does anyone have experience with this approach, or thoughts about sealing voids left after sheet pile removal? Thanks,

 

[Prepakt1]

You will probably need some permeation grouting to stop seepage.Plain cementitious grout may not be sufficient. You may need to use ultrafine cement grout to get a good seal or a combination of both ,depends on the situation.Ultrafine is 5 to 6 times the price of normal cement.Grouting a levee is not a problem.

Intrusion Prepakt /marineconcrete.com

 

[BigHarvey]

You should weld a grouting pipe to each pair of sheet piles in order to be able to grout the void left at the same time you remove the sheet piles. A classical bentonite cement grout should be enough for your needs.

 

[DRC1]

I have never seen the area of an extracted sheet pile grouted. Generally the void collapses, esp. if vibratory metods are used. However for a levee I can understand your concern. I would look through the Corp of Engineers for guidence on this.

 

[civilperson]

Plan on leaving the sheet pile in place, offer a bid alternate to the contractor to remove and grout. The sheet pile left in place is probably cheaper.