Research Article
Study on Microstructural Evolution and Strength Growth and Fracture Mechanism of Cemented Paste Backfill
Table 2
Characteristic value of particle size.
| | 
 |  | Fineness/mesh | Particle size/μm | Percentage/% | Cumulative percentage/% |  | 
 |  | <500 | 0~25 | 56.7 | 56.7 |  | 500~325 | 25~45 | 10.8 | 67.5 |  | 325~200 | 45~75 | 11.2 | 78.7 |  | 200~150 | 75~106 | 7.4 | 86.1 |  | 150~100 | 106~150 | 7.8 | 93.9 |  | 100~80 | 150~180 | 3.2 | 97.1 |  | >80 | >180 | 2.9 | 100 |  | 
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