Research Article
Effects of Doping Glass Fibers on the Early Strength of Sand-Based Cemented Paste Backfill for Solid Wastes Disposal in a Coal Mine
Table 4
Parameters of the slump testing of SCPB.
| | Scheme | Glass fiber length (mm) | Glass fiber ratio (%) | Fly ash (%) | Aeolian sand (%) | Cement (%) | Quicklime (%) | Slump (mm) | Average (mm) |
| | I | I1 | -- | -- | 47.5 | 39.5 | 8 | 5 | 261 | 269 | | I2 | -- | -- | 47.5 | 39.5 | 8 | 5 | 276 | | I3 | -- | -- | 47.5 | 39.5 | 8 | 5 | 271 |
| | II | II1 | 6 | 1.0 | 46.5 | 39.5 | 8 | 5 | 207 | 209 | | II2 | 6 | 1.0 | 46.5 | 39.5 | 8 | 5 | 214 | | II3 | 6 | 1.0 | 46.5 | 39.5 | 8 | 5 | 208 |
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