Wharf Road Sanding Repair Foundation Sinking Grouting Material Trenchless Grouting Material
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Performance Indicators |
Geopolymer grout is a cement-based grouting material primarily modified with high-strength cement, polycarboxylate superplasticizers, and multi-mineral materials. It features excellent fluidity, micro-expansion, certain toughness, strong bonding with concrete, and corrosion resistance and durability. It is suitable for grouting repair of concrete cracks wider than 3mm and for steel reinforcement encapsulation. Table 1 shows the performance indicators of geopolymer grout.
No. | Test Item | Performance Indicator | |
1 | Vertical Expansion Rate (%) | 3h | ≥0.10 |
Difference between 4h and 3h | ≥0.020 | ||
2 | Fluidity (mm) | Initial Value | ≥380 |
30min Retention Value (%) | ≥90 | ||
3 | Compressive Strength (MPa) | 3d | ≥25 |
7d | ≥35 | ||
28d | ≥55 | ||
4 | Flexural Strength (MPa) | 7d | ≥5 |
28d | ≥8 | ||
5 | Splitting Tensile Strength (MPa) | 7d | ≥3 |
28d | ≥4 | ||
6 | Bleeding Rate (%) | 0 | |
7 | Normal Bond Strength with Concrete (MPa) | 28d | ≥1.5, and cohesive failure in concrete |
| Industry Category: | Chemicals/Catalysts & Additives/Sizing Agents |
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