Research Article
Research on Carbonation Characteristics and Frost Resistance of Iron Tailings Powder Concrete under Low-Cement Clinker System
Table 5
Natural carbonization depth of concrete (mm).
| Group | Carbonation depth after 1 d curing | Carbonation depth after 28d curing | 28 d | 90 d | 180 d | 360 d | 720 d | 1080 d | 28 d | 90 d | 180 d | 360 d | 720 d | 1080 d |
| A1 | 2.4 | 3.1 | 3.9 | 6.0 | 9.8 | 11.9 | 0 | 0.1 | 0.4 | 0.8 | 1.1 | 1.4 | A2 | 2.5 | 3.6 | 5.1 | 7.4 | 12.2 | 13.6 | 0 | 0.2 | 0.8 | 1.1 | 1.6 | 1.9 | A3 | 3.0 | 4.7 | 5.4 | 7.5 | 12.6 | 14.8 | 0.1 | 0.3 | 1.0 | 1.2 | 1.8 | 2.4 | A4 | 4.5 | 6 | 6.6 | 9.1 | 14.8 | 17.1 | 0.3 | 0.5 | 1.2 | 1.5 | 2.5 | 2.9 | A5 | 6.1 | 8.6 | 9.3 | 11.9 | 18.6 | 22.5 | 0.4 | 0.8 | 1.4 | 2.4 | 3.6 | 4.1 | B1 | 1.1 | 1.9 | 2.2 | 3.5 | 5.6 | 6.8 | 0 | 0 | 0 | 0.3 | 0.8 | 0.9 | B2 | 1.8 | 3.0 | 3.9 | 5.2 | 8.8 | 10.7 | 0 | 0 | 0.3 | 0.8 | 1.4 | 1.6 | B3 | 2.6 | 3.5 | 4.2 | 5.5 | 10.1 | 12.6 | 0 | 0.1 | 0.5 | 0.9 | 1.6 | 1.8 | B4 | 2.8 | 3.8 | 4.8 | 7.8 | 12.7 | 15.5 | 0 | 0.2 | 1.0 | 1.5 | 2.1 | 2.4 | B5 | 3.3 | 5.4 | 6.5 | 9.4 | 15.6 | 18.8 | 0.2 | 0.6 | 1.1 | 2.1 | 2.9 | 3.3 |
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