Research Article
Study on Preparation and Properties of High-Strength Nano-Ceramic Coating on the Surface of Steel Structure Connectors
Table 5
Technical indicators and test results of fly ash.
| | Serial number | Test items | Standard indicator | Test results | | I | II | III |
| | 1 | Fineness (45 um sieve residue) % | ≤12.00 | ≤25.00 | ≤45.0 | 4.61 | | 2 | Water demand ratio (%) | ≤950 | ≤105.0 | ≤115.0 | 922 | | 3 | Loss on ignition (%) | ≤5.00 | ≤8.000 | | 3.11 | | 4 | Moisture content (%) | | ≤1.00 | | 0.22 | | 5 | Free calcium oxide | | 1 | | 1.21 | | 6 | Total alkali content | | | | 1.57 | | 7 | Apparent density (kg/m) | | | | 2240.2 | | 8 | Specific surface area (m3/kg) | | | | 454.2 | | 9 | Activity index | | | 70 | 73 |
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