Research Article
Experimental Study of the Failure Mechanism of the Anchorage Interface under Different Surrounding Rock Strengths and Ambient Temperatures
Table 3
Concrete mix proportions.
| | Strength grade | Cement (kg) | Sand (kg) | Stone (kg) | Water (kg) | Sand rate (%) | Type sand parameters of water reducing agent (kg) |
| | C20 | 350 (P.O 32.5) | 680.8 | 1159.2 (limestone) | 210 | 37 | — | | C40 | 400 (P.O 42.5) | 705.22 | 1200.8 (limestone) | 144 | 37 | NF(5.6) | | C60 | 420 (P.O 42.5) | 648.1 | 1103.4 (basalt) | 148.5 | 37 | NF-F(130) |
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