ART-ZJL is a tunnel grouting material, used in the crown grouting construction with formwork, is composed of cement, mineral admixtures, fine aggregates, and admixtures, which are uniformly mixed in a certain proportion. After mixing with water, it exhibits excellent fluidity, pumpability, and non-segregation properties. Once hardened, it has a slight expansion characteristic and good bonding performance with the lining concrete.
| Serial Number | Test Item | Technical Index | Measured Value | |
| 1 | Moisture Content | ≤1.0 | 0.1 | |
| 2 | Fineness (Residue on 0.63 mm Square Mesh Sieve) (%) | ≤15 | 2 | |
| 3 | Apparent Density (kg/m³) | 2260±40 | 2250 | |
| 4 | Initial Flow (mm) | 380~410 | 395 | |
| 5 | Flow after 30 min (mm) | ≥330 | 380 | |
| 6 | Flow after 90 min (mm) | ≥320 | 350 | |
| 7 | Separation Degree (%) | -1.0~1.0 | 0.3 | |
| 8 | Bleeding Rate（%） | 0 | 0 | |
| 9 | Plastic Expansion Rate（%） | 3h | 0.3~2 | 0.7 |
| The difference between 24 hours and 3 hours | 0~0.5 | 0.4 | ||
| 10 | Flexural/Compressive Strength (MPa) | 12h | ≥1.0/3.5 | 1.3/4.0 |
| 1d | ≥4.0/18.0 | 7.7/35.3 | ||
| 3d | ≥8.0/35.0 | 12.2/63.2 | ||
| 28d | ≥10.0/50.0 | 15.1/85.7 | ||
Crown Grouting with Formwork for Tunnel Lining
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