Binder chemistry
Roughly eight percent of global CO₂ leaves a cement kiln, and more than half of that comes out of the limestone itself rather than the fuel. Steenzout makes structural binder from steel slag and fly ash, activated cold. Same forms, same pumps, same crews — different chemistry in the silo.
01 — Binders
Replaces Portland cement one for one in precast moulds. Demoulds in eleven hours at 20 °C without steam curing, which is where the energy saving actually comes from.
Chloride diffusion an order of magnitude below CEM III/B in our own 900-day panels at Vlissingen. Slag-rich because seawater is the one place this chemistry is genuinely better, not merely equal.
Bonds to carbonated concrete without a primer coat. Higher activator load, which makes it expensive — use it where access costs more than material.
02 — Process
Slag chemistry drifts between heats. Instead of demanding a narrow spec from the steelworks, our activator is dosed against an inline XRF reading of the batch actually in the silo.
No clinker kiln, so no 1 450 °C and no process CO₂ from decarbonating limestone. The reaction runs at ambient; the energy bill is a mixer and a pump.
Everyone passes a 28-day cube. We cast full panels and leave them in the Westerschelde, because the failures that matter are at the surface after five winters.
Customers receive the full mix design and the activator specification. If we disappear tomorrow, their precast plant keeps running on somebody else’s chemicals.
03 — Numbers
04 — Contact