Research Article
Mixture Ratio Design Optimization of Coal Gangue-Based Geopolymer Concrete Based on Modified Gravitational Search Algorithm
Table 4
Mix design of different strength grades coal gangue-based geopolymer concrete (before optimization).
| Strength grades | Cement (kg/m3) | Fly ash (kg/m3) | Coal gangue (kg/m3) | Sand (kg/m3) | Pebble (kg/m3) | Water reducing agent (kg/m3) | Water glass (kg/m3) |
| C30 | 314 | 154 | 486 | 765 | 902 | 5.7 | 94.5 | C35 | 330 | 188 | 452 | 736 | 865 | 6.1 | 131.8 | C40 | 365 | 221 | 435 | 703 | 821 | 6.4 | 152.3 | C45 | 402 | 258 | 417 | 664 | 785 | 6.8 | 157.9 | C50 | 434 | 287 | 383 | 639 | 738 | 7.1 | 171.4 |
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