Tearing out one of the bedrooms in our house built in 1959 with a concrete slab. When we got down to the floor, it looks like the concrete changes color. And then there's a glued linoleum mat over the rest of the floor.

1. Could it be blåbetong?
2. Could the glue contain asbestos?

Novice in the matter.
 
In beams, I am unsure, but aerated concrete walls (if it's concrete) and the adhesive may contain asbestos. The best thing is to send samples for analysis. I personally used https://aanalys.se/ it was quick and smooth; it was maybe two years ago I used their services, and there are other companies that do the same thing.
 
Image?
 
Images are coming here!
 
  • Concrete surface with applied sealant visible in a narrow line across the image, showing texture and wear.
  • A concrete floor with a visible crack, surrounded by wood planks and a hammer placed nearby.
  • A corner of old linoleum flooring is being pulled back, revealing a textured underside and green sock on blue carpet underneath.
  • Piece of wood and screw beside a textured wall panel on a concrete floor, with wood shavings scattered around.
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