耐蚀钢筋在模拟混凝土孔隙液环境及海砂混凝土中钢筋在模拟海水环境中的钝化及腐蚀行为

谢文珍, 王震宇, 韩恩厚

Passivation Behavior of Corrosion Resistant Rebar Steels as Bare Steels in a Simulated Concrete Pore Fluid and as Rebar Steels Embedded in Concrete Made of Cement and Sea-sand in a Simulated Seawater

XIE Wenzhen, WANG Zhenyu, HAN En-Hou

表1 电化学阻抗谱的拟合结果

Table 1 Fitting results of EIS of corrosion-resistant steel rebar in simulated pore solutions with different pH values

pH Time / d Rs / Ω·cm2 Rf / 103 Ω·cm2 Rct / 106 Ω·cm2 Qdl / 10-6 F·cm-2 Qf / 10-6 F·cm-2 11.5 0 580.70 36.54 0.63 12.44 17.79 1 839.70 76.21 1.83 7.30 16.02 2 858.00 82.67 2.29 6.24 15.65 3 795.00 85.06 2.65 5.73 15.54 4 935.90 98.58 3.02 5.29 15.34 5 887.10 101.70 3.17 5.07 15.60 6 998.10 111.80 3.66 4.70 15.52 7 941.70 110.90 3.84 4.55 15.37 8 1009.00 110.40 3.82 4.41 15.64 12.5 0 116.90 21.66 0.17 9.90 20.73 1 132.90 35.07 0.75 6.29 18.43 2 133.70 30.74 1.24 5.68 17.45 3 124.50 27.22 1.59 5.49 16.93 4 136.50 25.48 1.91 5.37 16.59 5 127.00 25.47 2.13 5.28 16.42 6 136.90 24.00 2.54 5.19 16.11 7 134.30 24.55 2.80 5.12 × 10-6 15.95 8 140.60 24.27 2.90 5.01 × 10-6 16.11 13.5 0 21.49 26.02 0.14 16.98 24.20 1 22.94 55.29 0.36 14.24 21.99 2 24.37 54.62 0.34 14.86 21.12 3 21.61 46.00 0.31 13.03 20.58 4 23.73 44.91 0.31 12.28 20.48 5 22.11 41.20 0.31 11.66 20.38 6 23.88 36.12 0.32 11.62 20.29 7 24.17 34.19 0.33 11.26 20.25 8 24.06 34.24 0.33 11.41 20.26 HRB400-11.5 0 131.30 181.00 0.08 21.10 57.20 1 142.40 71.56 0.37 122.00 48.63 2 142.30 623.80 1.68 2.29 45.28 3 130.10 0.49 0.70 1.54 46.98 4 142.90 0.52 0.97 7.24 46.44 5 133.00 0.62 1.12 6.16 46.10 6 141.30 4.11 1.40 6.19 45.47 7 142.80 4.79 1.55 2.69 45.25 8 143.80 9.12 1.59 1.53 45.26