Research Article
A BP Neural Network Method for Grade Classification of Loose Damage in Semirigid Pavement Bases
| Sample number | Actual category | Judgment category | True/false | Air voids |
| 1 | I | I | True | <6% | 2 | I | I | True | <6% | 3 | I | I | True | <6% | 4 | I | I | True | <6% | 5 | I | I | True | <6% | 6 | II | II | True | 6%–12% | 7 | II | II | True | 6%–12% | 8 | II | II | True | 6%–12% | 9 | II | II | True | 6%–12% | 10 | II | III | False | 12%–18% | 11 | III | III | True | 12%–18% | 12 | III | III | True | 12%–18% | 13 | III | III | True | 12%–18% | 14 | III | III | True | 12%–18% | 15 | III | III | True | 12%–18% | 16 | IV | IV | True | 18%–24% | 17 | IV | IV | True | 18%–24% | 18 | IV | III | False | 12%–18% | 19 | IV | IV | True | 18%–24% | 20 | IV | IV | True | 18%–24% | 21 | V | V | True | >24% | 22 | V | V | True | >24% | 23 | V | V | True | >24% | 24 | V | V | True | >24% | 25 | V | IV | False | 18%–24% |
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