Research Article
Research on Wheat Straw Application in the Preparation of Superplasticizer
Table 2
Levels of variables used in the experimental design.
| | Variable | Low level (1) | Middle level (2) | High level (3) |
| | TPEG-2400 (g) | 15 | 22.5 | 30 | | TPEG-1000 (g) | 6.25 | 12.5 | 18.75 | | MAS (g) | 1 | 2 | 3 | | WS (g) | 1 | 2 | 3 |
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