Polished low carbon concrete slabs?

Materials
2

Hi Jordan - we’ve gotten feedback in the past that once you get above 30+% SCM replacement (so typically with slag) that the slab finishing and polishing quality can deteriorate - slag makes your concrete “sticky”. We’ve tried looking at 50% slag mixes for slabs but were advised against using these high SCM mixes for polished slabs by our concrete supplier and polishing sub. That being said, if I was an Owner who cared about this kind of stuff I would think about paying the extra $$ to mock up a polished high SCM slab and learn from that mock up. My guess is that our suppliers/polishers had one or two bad experiences with polishing high SCM slabs where they had tried it for the first time and understandably don’t want to take the risk on it again unless they’re allowed/paid to run some additional trials to figure out a QC process when polishing high SCM slabs.