Describes a brick after pressing but before firing, or a monolithic lining after placing and curing but before its first heat-up. Green material holds its shape through green strength from binders, cement hydrates or moisture, but has not developed its fired bond. Green linings are vulnerable to freezing, rain, impact and fast heating.
Heard on the job
Lining is still green, nobody stands on that floor or runs a forklift over it until after the dry-out.
Also heard as
- unfired
Related terms
Cure
To hold freshly placed castable moist and at moderate temperature so its cement can fully hydrate.
Dry-out
Controlled first heat-up of a new monolithic lining to drive off water without cracking or spalling.
Castable
Dry refractory mix of aggregate, fines and binder that is mixed with water and poured or pumped like concrete.