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Mix cement and white cement if you need plastering in or around the house.

If you grind the wood with cement, it will start to rot. Lime breathes and works as an antiseptic. The proposed option is suitable for stone houses. Thank you!

I tried on wood and it was succesful. Lime is just for kind of painting, if we mention the same "Lime"

You can also try varnish.

I think it also depends on the climatic conditions. with air humidity up to 90%, like ours, wood enclosed in concrete will very quickly turn into dust. Lacquer is a good option, but if you want to breathe clean air, then I would not use it.