Will underfloor heating pipe buried into concrete work?

Hi am doing a conservatory and bought online a pack for underfloor heating to be connected straight to radiator circuit, this is recommended for heating an extension up to 15m2.
this mean water of about 80°c going through the pipe.
I layed the circuit down and my builder have poured the slab over it... Concrete slab, about 100mm thick.

Will it work.
The pipes were not connected to the circuit or anything yet.

Have I just done the dummest thing ever??

Please give me information,

Thanks,



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