Sealing diaphragm wall ground anchor penetrations

[hokie66]

I am in need of advice as to the best method of sealing temporary ground anchor penetrations in a slurry diaphragm wall. The wall is 450 thick, and there is about 2 metres of hydrostatic head in the marine clay outside the wall.

 

[ishvaaag]

Normally a call to a specialty firm such Sika or alike will give you the alternatives within the range of products they carry, and give advice on what to more learn if required. If unconvinced, call other, competence brings up some truths.

 

[PEinc]

Try the web site for Nicholson Construction. They did the anchors at the World trade center site and had to seal the anchor holes throught the slurry walls. Maybe you can contact them through their web site for some guidance. I would be surprised if Sika could help you with leaks during anchor installation. They maybe could help seal leaks AFTER the anchors are installed, but probably nor during installation when you will encounter the greatest problem.

 

[hokie66]

Not during installation...I am talking about permanently sealing the wall penetration where temporary ground anchors were used. There is hydrostatic pressure. I think it involves some type of expansive grout, but was just trying to pick the brains of someone who has done it. I will try the web site of Nicholson Construction.

 

[Prepakt1]

More info on the actual gaps or diam would probably get you more useful information. There are different ways to do this
type of grouting. It all depends on what exactly you need to do and the dimensions of what you need to seal.

Intrusion Prepakt /marineconcrete.com