Research Article
Mixture Ratio Design Optimization of Coal Gangue-Based Geopolymer Concrete Based on Modified Gravitational Search Algorithm
Table 3
The market prices of raw materials (yuan/ton).
| | Raw materials | Prices (yuan/ton) | Density (kg/m3) |
| | Ordinary Portland cement | 320 | 3100 | | Coal gangue | 300 | — | | Fly ash | 30 | — | | Polycarboxylate high performance water reducer | 4500 | — | | Water glass | 3200 | — | | Pebble | 350 | 2684 | | River sand | 45 | 1589 |
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