Drying the ground bamboo in a high temp greenhouse would reduce the weight substantially. You'd basically be shipping fuel around. Bamboo is already 50% carbon.

Then mixing can be done on-site and gathered locally to reduce carried weight further.

Grinding can be solar powered, green house is sunlight, cutting can be electric powertools, etc.

Emission wise its probably very sound, but maintaining and replanting bamboo which can grow like, 1m a day, might be the hard part in terms of scaling things up.

(Edit: a 100m2 area with 25% area utilization should yield 8750kg of bamboo a day. Or 4.375 tons of carbon.

Idk how accurate those numbers are, and that's a best guess using online resources)