考虑个体差异的氯氧镁水泥混凝土涂层钢筋寿命预测

王鹏辉,乔宏霞,冯琼,曹辉

Life prediction of coated steel with individual difference in magnesium oxychloride cement concrete

Peng-hui WANG,Hong-xia QIAO,Qiong FENG,Hui CAO

表 5 涂层钢筋腐蚀电流密度增量

Tab.5 Corrosion current density increment of coated steel bar

μA /cm2 ${\varDelta _{ {t_i} - {t_{i - 1} } } }$ ΔJ /10−3 A组 B组 C组 ${\varDelta _{{t_1} - {t_0}}}$ 0.215 0.443 0.338 ${\varDelta _{{t_2} - {t_1}}}$ 0.425 0.374 0.369 ${\varDelta _{{t_3} - {t_2}}}$ 0.445 0.204 0.366 ${\varDelta _{{t_4} - {t_3}}}$ 0.150 0.100 0.140 ${\varDelta _{{t_5} - {t_4}}}$ 0.180 0.110 −0.080 ${\varDelta _{{t_6} - {t_5}}}$ 0.120 0.060 0.280 ${\varDelta _{{t_7} - {t_6}}}$ 0.130 0.320 0.390 ${\varDelta _{{t_8} - {t_7}}}$ 0.230 0.500 0.390 ${\varDelta _{{t_9} - {t_8}}}$ 0.440 0.320 0.540 ${\varDelta _{{t_{10}} - {t_9}}}$ 1.210 0.800 −0.090 ${\varDelta _{{t_{11}} - {t_{10}}}}$ −0.310 0.300 0.340