**Key Features & Benefits**  

 **1. Self-Activating Protection**  

- **Hydrophilic Core Technology**: Absorbs water and expands **300-500%** in volume  

- **Directional Swelling**: Engineered to expand **only toward water sources**  

- **Instant Response**: Activates within **minutes** of moisture contact  

**2. Superior Material Science**  

- **Base Materials**:  

  - **Bentonite-Based**: Natural clay for eco-friendly projects  

  - **Polymer Hybrid**: Synthetic blends for aggressive chemical environments  

- **Controlled Expansion Rate**: Prevents over-swelling damage  

 **3. Unmatched Versatility**  

- **Pre-Construction**: Installed in poured joints before concrete setting  

- **Retrofit Applications**: Injected into leaking cracks in existing structures  

- **Complex Geometries**: Flexible strips conform to irregular surfaces  

 **4. Performance Assurance**  

- **Self-Healing**: Re-seals after minor structural movements  

- **Chemical Resistance**: pH stable in **2-13 range**  

- **Longevity**: Remains active for **30+ years**  

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### **Technical Specifications**  

| **Property**               | **Specification** |  

|----------------------------|-------------------|  

| Expansion Rate             | 150-600% (custom formulations available) |  

| Swelling Pressure          | 0.15-0.4 MPa      |  

| Activation Time            | 5-90 minutes (water-dependent) |  

| Temperature Resistance     | -20°C to +70°C    |   

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 **Application Scenarios**  

 **New Construction**  

- **Basement Joints**: Prevents capillary water rise  

- **Tunnel Segments**: Seals between precast concrete rings  

- **Water Tanks**: Gasket-free penetration sealing  

**Repair & Maintenance**  

- **Crack Injection**: Fluid-grade expanding resins  

- **Pipe Boots**: Water-activated wrap systems  

- **Curtain Wall Joints**: Non-destructive sealing  

 **Special Environments**  

- **Subway Systems**: Vibration-resistant formulations  

- **Mining Infrastructure**: High-pressure shaft sealing  

- **Green Buildings**: VOC-free compositions  

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### **Installation Advantages**  

✔ **No Special Tools Required** – Peel-and-stick or pour-in-place options  

✔ **Immediate Water Contact Allowed** – No curing delay  

✔ **Visual Verification** – Color-changing indicators confirm activation  

**Installation Process:**  

1. **Surface Prep**: Clean and dampen substrate  

2. **Product Placement**: Adhere strip or inject compound  

3. **Activation**: Water triggers expansion (test spray recommended)  

4. **Verification**: Check uniform swelling  

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**Why Choose Expanding Waterstops?**  

◉ **Eliminates Human Error** – Automatic activation ensures complete sealing  

◉ **Reduces Labor Costs** – 70% faster installation vs traditional methods  

◉ **Future-Proofs Structures** – Continues to adapt to new cracks  

**Industry-Leading Innovations:**  

- **Smart Sensors**: Wireless swelling monitors  

- **Bio-Based Formulas**: Sustainable alternatives  

- **Pressure-Regulating**: Dynamic load adaptation