کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1457555 989268 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of hydroxyl ions on chloride penetration depth measurement using the colorimetric method
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Effect of hydroxyl ions on chloride penetration depth measurement using the colorimetric method
چکیده انگلیسی

In this paper, the effect of hydroxyl ions on chloride penetration depth measurement using the colorimetric method was studied. Equivalent silver nitrate solution (i.e. Ag+ = Cl−) was added to the NaCl + NaOH solution with different concentrations, then the amount of precipitated silver chloride and silver oxide were determined by chemical methods, and the color of the precipitated products was examined. Results show that the amount of silver chloride formed decreases linearly as OH− to Cl− ratio (r) increases. Thus, the chloride concentration at color change boundary changes with the pH value of the concrete. AgCl has a white color, while Ag2O has a dark brown color. When the value of r exceeds 4, the color of the mixture looks brown, and color change boundary cannot be easily distinguished.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 38, Issue 10, October 2008, Pages 1177–1180
نویسندگان
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