Research Article
Self-Monitoring of Reinforced Concrete Beam Bending with Carbon Nanofiber Polyurethane Composite
Table 4
Physicochemical properties of combined polyether.
| Serial number | Item | Index |
| 1 | Surface | Colorless transparent liquid | 2 | Viscosity (25°C)/mPa·s | 200–1500 | 3 | Hydroxyl value, mg KOH/g | 350 ± 30 | 4 | Density (25°C)/(g/cm3) | 1.11 ± 0.20 |
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