摘要
通过室内模拟试验,对不同含量的NaCl污染土进行基本物理性质、电阻率和氧化还原电位的测定,对比分析了NaCl污染土的含气率、电阻率、氧化还原电位与Q235钢质量损失率之间的变化关系。结果表明:随着NaCl含量的增大,土体的含气率、电阻率和氧化还原电位减小,Q235钢的腐蚀失重率随着含气率、电阻率和氧化还原电位的减小而增大。利用多元线性回归分析方法建立了Q235钢在污染土中的腐蚀失重率与含气率、电阻率、氧化还原电位的关系模型,该模型对工程中NaCl污染土中钢材的腐蚀机理与防护具有一定参考价值。
The basic physical indexes, resistivity and redox potential of soil polluted by NaCl with different levels were tested in laboratory. The relationship between the corrosion weight-loss rate of Q235 steel and the gas content, resistivity and redox potential of soil polluted by NaCl were analyzed. The results demonstrated that with the increase of NaCl level in soil, the gas content, resistivity and redox potential of polluted soil all decreased while the corrosion weight-loss rate of steel increased. A function model of corrosion weight-loss rate of steel with gas content, resistivity and redox potential was established by multiple linear regression. This modal is of significance in analyzing the corrosion mechanism and antisepsis of steel in NaCl polluted soil.
出处
《中国科技论文》
CAS
北大核心
2013年第5期397-401,共5页
China Sciencepaper
基金
国家自然科学基金资助项目(51208333)
中国博士后科研基金资助项目(CPSF)(20110491632)
高等学校博士学科点专项科研基金资助项目(20111402120001)
山西省青年科技研究基金资助项目(2010021020-3)
山西省高等学校科技项目(201101005)
关键词
污染土
Q235钢
腐蚀失重率
电阻率
氧化还原电位
polluted soil
Q235 steel
corrosion weight-loss rate
resistivity
redox potential
