Research Article
Carbonation Characteristics and Bearing Capacity Attenuation of Loaded RC Beam Coupled with Chloride Erosion
Table 3
Carbonation depths of partial specimens after carbonizing for 28 days under different corrosion conditions.
| | Specimen number | Stress at beam bottom (MPa) | d1 (mm) | d2 (mm) | Δd = d2 − d1 (mm) | δ = Δd/d1 (%) |
| | SP1-40/50 | — | 11.2 | 8.2 | −3.0 | −26.8 | | SP4-3-40/50 | 0.5ft | 4.7 | 3.9 | −0.8 | −17.0 | | SP4-2-40/50 | 0.3ft | 4.6 | 3.8 | −0.8 | −17.4 | | SP2-40/50 | 0 | 4.5 | 3.6 | −0.9 | −20.0 | | SP5-2-40/50 | 0.15fc | 3.9 | 3 | −0.9 | −23.0 | | SP3-1-40/50 | 0.3fc | 3.8 | 2.9 | −0.9 | −23.7 | | SP3-2-40/50 | 0.5fc | 3.5 | 2.6 | −0.9 | −25.7 | | SP3-3-40/50 | 0.7fc | 3.3 | 2.4 | −0.9 | −27.3 |
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Note. d1 and d2 are the carbonation depths of the specimens with concrete grades of C40 and C50, respectively.
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