Crystalline Concrete Admixture
Integral crystalline admixture dosed into fresh concrete for permanent integral waterproofing throughout the structure.
Overview
Waterproof the concrete. Not just the surface.
Crystalline Concrete Admixture is a dry powder crystalline admixture added directly to the concrete mix at the batching plant. Once cast, the reactive chemicals remain dormant throughout the concrete mass until activated by water – then growing insoluble crystals that seal capillaries permanently throughout the entire concrete thickness.
Engineered for structures where surface-applied coatings are impractical: deep foundations, mass-poured slabs, precast elements, and infrastructure assets requiring 100-year service life.
Key Features
- Integral admixture – protection throughout concrete mass
- Added at batching – no skilled application labour required
- Self-healing – reactivates with future water exposure
- No effect on workability or set time at correct dosage
- Compatible with other admixtures (superplasticiser, retarder)
- 100-year design life – outlasts surface coatings
Technical Specs
Technical Specifications
All values measured at 23°C unless noted. Full test data available in the datasheet.
| Property | Value | Unit |
|---|---|---|
| Form | Dry crystalline powder | – |
| Active chemistry | Reactive crystalline compounds | – |
| Colour | Off-white | – |
| Recommended dosage | 1.0–2.0 | % of cement weight |
| Dosing method | Add at batching with cement | – |
| Effect on slump | Negligible at design dosage | – |
| Effect on set time | Negligible | – |
| Effect on compressive strength | Neutral to slight increase | – |
| Crystal growth penetration | Throughout concrete mass | – |
| Crack self-healing | Up to 0.4 mm | – |
| Hydrostatic resistance | ≥ 14 | bar |
| Chloride content | Nil | – |
| Packaging | 20 | kg bag |
| Standards | ACI 212.3R · NSF 61 | – |
Applications
Where this product is used
Five typical site applications where our crews specify this product.
Mass concrete pours
Deep foundations, mat slabs, and heavy-section pours.
Water-retaining structures
Reservoirs, water tanks, and treatment facility tanks.
Underground infrastructure
Tunnels, vaults, and underground utility chambers.
Precast elements
Factory-produced waterproofed concrete panels and units.
Bridge substructures
Pile caps, abutments, and submerged structural elements.
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