Material Composition
| Key Components | Content | Property |
|---|---|---|
| α-Desulfurized Gypsum | 70-75% | Flexural strength ≥3.5MPa |
| Expanded Glass Beads | 15-20% | Cylinder strength ≥0.25MPa |
| Redispersible Powder | 1.5-2% | Bond strength ≥0.5MPa |
| Protein Retarder | 0.03-0.05% | Open time ≥60min |
Performance (GB/T 28627-2023 Type L)
| Property | Requirement | Test Data | Standard |
|---|---|---|---|
| Wet density | ≤1000kg/m³ | ≤880kg/m³ | GB/T 5486-2008 |
| Compressive strength | ≥1.0MPa | ≥1.8MPa | ISO 679 |
| Tensile bond strength | ≥0.3MPa | ≥0.52MPa | JGJ/T 70-2009 |
| Thermal conductivity | ≤0.30W/(m·K) | 0.22W/(m·K) | GB/T 10294-2008 |
| Sound insulation (20mm) | - | 37dB | ISO 10140-2 |
Application Protocol
Substrate Prep
Water absorption ≥1.5g/(min·m²) (prime porous surfaces)
Concrete moisture ≤5%
Mixing
Water ratio: 0.65-0.70 (16.3-17.5L per 25kg)
Mix 2min + rest 3min
Installation
Thickness: 5-30mm/single pass
Leveling tolerance: ≤3mm/3m
Sanding: 24-48h after setting
Efficiency
Machine spraying: 120-150㎡/h (3-person crew)
Manual application: 40-60㎡/person-day
Environmental Limits
Temp range: 5℃~40℃
Avoid strong airflow during curing
Restrictions
Areas with RH＞95% (unwaterproofed bathrooms)
External walls/basements with water exposure
