Research Article
Predicting the Compressive Strength of Desert Sand Concrete Using ANN: PSO and Its Application in Tunnel
Table 3
Mix proportion of shotcrete for testing.
| | Number | Water-binder ratio | Sand ratio (wt %) | The replacement rate of desert sand (wt %) | Desert and type | Fly ash content (wt %) | Silica fume content (wt %) | Air content (vol %) | Slump (mm) | Predicting of 28d compressive strength (MPa) |
| | OSS | 0.42 | 46 | 0 | B | 10 | 0 | 2.8 | 140 | 43.4 | | DSS-1 | 0.42 | 40 | 80 | B | 10 | 0 | 2.3 | 135 | 39.5 | | DSS-2 | 0.42 | 40 | 80 | B | 10 | 0 | 3.1 | 140 | 42.8 | | DSS-3 | 0.42 | 40 | 100 | B | 10 | 0 | 3.4 | 140 | 40.9 | | DSS-4 | 0.44 | 40 | 100 | B | 10 | 0 | 3.7 | 140 | 40.3 |
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Note. The desert sand type B means desert sand of Maowusu.
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