Repair blue concrete wall

[Xzenonmg]

Hello.
I have a damaged blåbetong wall that I'm planning to repair. I was wondering if anyone has any good tips on how to fix it. I was thinking of using foam sealant and then some house fix.

 

[Megapixel]

You can use gipsbruk, I did that in my old apartment where I had lättbetong walls.

 

[Dowser4711]

What do you want for the final result?
Is it an exterior wall? (I see a vent on one wall, but it could just as well go to a duct)
Should the wall be clad or insulated with something?

Quite frankly, you can use almost anything, from foam sealant to house fix, and get a more durable result than blåbetongen...

 

[Xzenonmg]

What final result do you want?
Is it an exterior wall? (I see a vent on one wall, but it could just as well go to a duct)
Should the wall be cladded or insulated with something?

Practically, you can use almost anything, from foam sealant to house fix and get a more durable result than the blue concrete...

It's indoors. Where the vent is located, that’s where my kitchen will be. And behind the broken wall is my small toilet.

 

[Xzenonmg]

No more ideas?

 

[myrstack]

If you're just going to fix the corner, plaster with light concrete pieces is probably the easiest way forward. I think you'll have to do it in two rounds, though. One round where you fill in some and fill out larger holes with light concrete pieces, and then a round where you actually plaster up the corner again. If in the first round you get far enough to put a corner strip for the second round, that's a success.