Most of the carbon conversation in precast is about cement replacement, and it should be. But there is a second conversation that barely happens: the overrun in the corner of the yard that will be broken up because nobody within a hundred miles knew it existed.
Reuse beats recycling, every time
Crushing a sound unit for aggregate recovers the material and discards the manufacturing. Every hour of curing, every kilo of steel, every mile it was already hauled — all of it written off. Putting the same unit on a job fifty miles away keeps all of that.
- Surplus stock, listed with dimensions and a photograph rather than a phone number.
- Moulds rented between plants instead of sitting idle between runs.
- Equipment inspected and resold rather than scrapped at book value.
None of this requires new technology. It requires the surplus to be visible to somebody who needs it, which is a market problem rather than an engineering one.
