Sika

Last updated February 10, 2026

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Slag-based hydraulic binder activation: SikaRecent Research Landscape

Low reactivity in steel and blast furnace slags limits their use as primary cementitious materials, which is mitigated through precise mechanical grinding and alkali metal silicate activation. This transformation of industrial waste into high-strength inorganic binders reduces clinker costs and carbon tax exposure.

What technical problems is Sika addressing in Slag-based hydraulic binder activation?

Uncontrolled volumetric expansion

(26)evidences

High porosity in recycled concrete components leads to excessive water uptake and poor rheology. Mitigating this prevents premature drying and loss of workability in the binder.

Slow early strength development

(19)evidences

Slag-based binders and geopolymers inherently suffer from sluggish initial hydration and setting times. Accelerating this process reduces construction cycle times and improves early-stage structural integrity.