ShrinkLock™ Shrinkage-Locking Agent is a high-performance concrete shrinkage inhibitor designed to suppress cracking and drying shrinkage. Utilizing the Dual-Lock™ technology, a single spray application after initial concrete setting can rapidly lock in moisture before it evaporates, effectively preventing rapid moisture loss during the drying process. Its special nano-active components react to form C-S-H gel, which compensates for drying shrinkage cracks, fills capillary pores, reduces pore formation, increases concrete density, and significantly enhances overall durability.
| Locking Mechanism | Function Description | Core Effect |
|---|---|---|
| Internal Lock | Locks in pore moisture and slows down evaporation, providing an internal curing effect. | Prevents capillary pore formation and controls drying shrinkage. |
| Cellica Lock | Reacts secondarily with the internal components of concrete to fill capillary pores. | Strengthens the structure and compensates for shrinkage. |
- Mass Concrete (Bridge Piers, Tunnels, Dams)
- Industrial and Commercial Floors
- High-Performance Concrete
- Precast Concrete Elements
- Repair and Crack Prevention for Existing Structures / Structural Life-Extension Projects
- Dual-Lock™ Technology: Internal Lock + Cellica Lock, Dual Mechanism for Locking Drying Shrinkage and Pore Formation.
- Single-Step Application: Simply spray evenly after initial setting; no change to the original concrete mix design is required.
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Highly Effective Drying Shrinkage Control: Volume shrinkage is improved from −0.32% to a slight expansion of +0.01%.
- Structural Reinforcement: Formation of C-S-H gel strengthens pores, making the concrete denser and more compact.
- Improved Efficiency: No special equipment is required, enabling fast and easy application.
- High Cost-Effectiveness: Reduces crack formation and lowers subsequent maintenance and repair costs.
- Environmentally Friendly: Reduces rework and maintenance needs, thereby lowering carbon emissions.
- Application Timing: Spray immediately after the initial setting of concrete.
- Spray Dosage: Recommended at 0.20 kg/m², applied in two cross-coat passes.
- Equipment: Airless sprayer or low-pressure spray gun, with a spraying distance of 30–50 cm.
- Curing Conditions: Avoid rain exposure or water accumulation within 12–24 hours after application.
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Compressive Strength Improvement: After application, the 28-day compressive strength increases by more than 8% compared to untreated concrete (CNS 1010:1993).
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Zero Shrinkage: No shrinkage observed at 28 days (CNS 1258:1985).
- Packaging: Available in 20 kg and 200 kg drums.
- Storage Conditions: Keep tightly sealed, protect from direct sunlight, and store at 5–30°C.
- Shelf Life: 12 months when stored unopened.