Mold-resistant concrete, mortar, or filler?

[swealp]

Hello!
I am looking for mold-resistant concrete, mortar, putty, or similar material that can be applied in thicker layers of about 5 cm+.

I have read about hempcrete; however, it seems difficult to obtain in Sweden.

Grateful for any tips.

 

[Stefan1972]

What do you mean by the properties then? How is regular concrete/cement not mold-resistant?

 

[vectrex]

Hello!
I am looking for mold-resistant concrete, mortar, filler, or similar material that can be applied in thicker layers of about 5 cm+.

I have read about hemp concrete, but it seems difficult to find in Sweden.

Grateful for any tips.

All concrete and mortar products are normally mold-resistant. That is, they cannot mold because there is no organic material in them for mold to live off. Dirt that accumulates on the surface of concrete can allow mold to grow, but that applies to all materials. You need to explain what you are trying to do so you can get better answers.

 

[swealp]

I am going to fill a pipe that has a small piece of wood inside that I can't get out.

I know that wet room putty is a bit more mold-resistant, but it can only be cast in a maximum of 5 mm, I need to cast at least 5 cm.

Thanks!!

 

[Stefan1972]

saw your other thread now and didn't make the connection earlier, but in any case. Why would an embedded träbit mold? Fill the hole with any filler and move on.

 

[vectrex]

I need to fill a pipe that has a small piece of wood inside that I can't get out.

I know wet room filler is a bit extra mold-resistant but it can only be cast in a maximum of 5 mm, I need to cast at least 5 cm.

Thanks!!

But actually, there is nothing extra mold-resistant since none of them mold. In your case, it's the wood that might mold, but that's only if it continues to stay damp. However, in that case, it's primarily that it rots and not molds.

I don't know how much or how thick you need to cast, but if this is indoors or protected from additional moisture in some way, then the wood inside the concrete/self-leveling compound will fare well if you use low WCR so that there is very little leftover water in the cured mix. Here, self-leveling compound is actually better since it contains gypsum, which consumes water faster and thus dries up quicker.

If the finished concrete is continuously exposed to water in any way, your piece of wood will eventually both mold and rot.