Research Article
Effect of Carbon Nanotube Size on Electrical Properties of Cement Mortar under Different Temperatures and Water Content
Table 2
Properties of ordinary Portland cement.
| | MgO (%) | SO₃ (%) | Loss (%) | Cl- (%) | Surface area (m2/kg) | Fineness (%) | Setting time (min) | Compressive strength (MPa) | | Initial setting time | Final setting time | 3d | 28d |
| | ≤5.0 | ≤3.5 | ≤3.5 | ≤0.06 | 300 | ≤8.0 | ≥45 | ≤600 | ≥16.0 | ≥42.5 |
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