Concria Oy · Now in the US
Dry-shake hardeners and nano-silica densifiers that eliminate liquid hardener applications, reduce callbacks, and deliver floors that perform from day one.
A complete flooring system applied during placement — not after. Less labor, faster schedules, better floors.
Patented dry-shake surface hardener applied at placement. Eliminates the need for liquid hardener/densifier application, curing compounds, and sealer coats on standard industrial floors.
Nano-silica densifier applied during troweling. Penetrates deeply into fresh concrete for maximum densification — far beyond what topical liquid hardeners can achieve on cured surfaces.
High-performance concrete floors for the industries where downtime isn't an option.
Traditional liquid hardeners are applied after the floor cures. Concria products work during placement — and that changes everything.
| Concria System | Liquid Hardener | |
|---|---|---|
| Application timing | During placement | Days/weeks after cure |
| Penetration depth | Full slab depth | Surface only (1-2mm) |
| Additional site visits | None — done at pour | 2-3 return trips |
| Curing compound needed | No — built in | Yes — separate step |
| Dust-proofing | Immediate | Delayed until applied |
| Abrasion resistance | AR0.5 achievable | AR1-AR2 typical |
| Carbon footprint | Lower — fewer materials | Higher — more products + trips |
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Sika AG
Sika AG Partnership
30% strategic stake from the world's largest concrete admixture company.
15+ Years
Finnish Innovation
Developed in Finland with 15+ years of R&D and field testing.
Patented
Patented Technology
Protected dry-shake and nano-silica formulations.
US-Wide
US Distribution
Nationwide availability through CCS.
Optimal Slab is a patented dry-shake hardener system applied during concrete placement. It combines hardening, densifying, and curing in a single application — eliminating the need for liquid hardeners, curing compounds, and return trips.
Traditional liquid densifiers are applied after the concrete cures and only penetrate 1–3mm of the surface. Concria products are applied during placement, penetrating the full slab depth for a complete, permanent reaction with the cement.
Concria floors are used in data centers, logistics and distribution warehouses, grocery and retail stores, automotive manufacturing, education facilities, and other high-performance environments.
Yes. Optimal Slab is specifically designed for Type 1L and CEM III low-carbon cements, where traditional dry shakes and liquid hardeners often fail or underperform.
Concria floors are polish-ready in 7 days after placement, compared to 28 days for traditional methods. This dramatically accelerates project schedules.
Optimal Slab floors last 50+ years with polish-only maintenance, compared to 3–5 years for epoxy coatings that require full strip-and-recoat cycles.