Research Article
Research on Pump Primers for Friction Reduction of Wet-Mix Shotcrete Based on Precreating Lubricating Layer
Table 4
Mix proportion of wet-mix shotcrete.
| | Number | Water-binder ratio (%) | Sand (kg/m3) | Gravel (kg/m3) | Cement (kg/m3) | Silica fume (kg/m3) | New primers (%) |
| | 0.5 | 1012 | 587 | 385 | 34 | — | | 0.5 | 1012 | 587 | 385 | 34 | 2 |
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