Research Article
Development of a New Type of Alkali-Free Liquid Accelerator for Wet Shotcrete in Coal Mine and Its Engineering Application
Table 13
Adaptability test of WT-1 type accelerator.
| | Cement kinds | Cement sources | Content of accelerator/% | Initial setting time/min | Final setting time/min |
| | Reference cement 42.5 | Reference cement | 6 | 2.3 | 7.1 | | Normal Portland cement P.O42.5 | Shandong Xinjulong coal mine | 6 | 3.1 | 7.7 | | Composite Portland cement P.C32.5 | Xin’an coal mine of Zaokuang Group | 6 | 4.6 | 11.8 | | Composite Portland cement P.C42.5 | Dongtan coal mine of Yankuang Group | 6 | 3.5 | 10.3 |
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