Thermal deformations / Reinforced concrete dome

[rbalykov]

Hello dome folks.

I'm trying to compose V1 w/ inscribed fullerene.
Diameter 6m, walls 200mm, hexagon edge 1200mm.
Doorway(s) in hexagons, windows are pentagons.
Slab-type basement, Tmin = -30*C, Tmax = 40*C
Precast panels, assembled with bolts/welding/loops + in-situ concreting.
Thermal deformation of 6m over season gonna be about 5mm

Possible proposed solutions:
1) ChatGPT: use bearings Steel-PTFE + loose anchoring, like they do in bridges.
2) ChatGPT: do nothing, let in-situ concrete be weak and get micro-cracks
3) Neighbour architect: cover it with thermal insulation, it will reduce T range and deformation

All of these doesn't safisfy me, because I'd like to make it fair-faced concrete (with foamglass/foamceramic aggregates, it gonna be warm enough).

Any Ideas will be appreciated.