Research Article
Study on Conventional and Rheological Properties of Corn Stalk Bioasphalt/PPA Composite Modified Asphalt
Table 4
Orthogonal test table of factor level.
| Variables | Unit | Coded and actual factor |
| PPA content | % | 2 | 4 | 6 | 8 | Bioasphalt content | % | 10 | 12 | 14 | 16 | Shear time | min | 20 | 30 | 40 | 50 | Shear rate | r/min | 1000 | 2000 | 3000 | 4000 |
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