When using Crushing Industry concrete crafting is replaced with liquid concrete mix which is then used to craft concrete and refined concrete. Additionally recipes that use concrete now use concrete mix instead.
https://mods.factorio.com/mod/crushing-industry

Just like vanilla concrete, concrete mix can be made in a foundry but if you do the outputs use heat-resistant pipes , which only outputs in heat-resistant pipes that aren't compatible with assembling machines, as a result you can't actually craft anything using concrete mix from foundries. While not a blocker since concrete mix can still be made in an assembling machine it unfortunate to miss out on the productivity bonus.

Is there any way you could make the output of foundries determinant based on the recipe? Or maybe add an assembler with a hot-pipe input?

Thank you for your time.

Ended up looking inside your mod and was able to get the output working by adding
(mods["crushing-industry"] and "concrete-mix")
to the output filter for normal pipes.

Thanks a lot for this report. It actually made clear that i needed to do some more fixing. but it has been done now. the new release is out

Awesome, thank you for fixing this so quickly