氯离子对水泥中游离亚硝酸盐离子的影响

IF 1.5 Q4 ELECTROCHEMISTRY International Journal of Corrosion Pub Date : 2018-07-02 DOI:10.1155/2018/2940953

Xiangwei Xing, Junzhe Liu, Yanhua Dai, Mengna Yang, Yushun Li

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引用次数: 4

摘要

这是一个将氯化物从外部渗透到水泥浆中的实验。采用化学定量分析方法，研究了自由基对水泥浆体中自由基含量和分布的影响。利用X射线衍射（XRD）和扫描电子显微镜（SEM）对其作用机理进行了微观研究。结果表明，水对C-S-H的物理竞争吸附和对NO2-AFm的化学取代使水泥浆体更加自由。在氯盐侵蚀的水泥浆体中，侵蚀面浓度最低，在距离侵蚀面10mm处浓度最高。浓度随侵蚀面深度的增加而逐渐降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Effect of Chloride Ion on Free Nitrite Ion in Cement

This was an experiment in which chloride was externally permeated into cement paste. The influence of on the content and distribution of free-form in the cement paste was researched using the chemical quantitative analysis method. The action mechanism was investigated by the micro-means of X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that the physical competitive adsorption of with on C-S-H and the chemical substitution of to NO2-AFm caused more free-form in the cement paste. In the cement paste with chloride salt erosion, the concentration in the erosion surface was the lowest, and the concentration reached the highest value at 10mm from the erosion surface. The concentration decreased gradually with the depth from the erosion surface.

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