کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4918625 1428781 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of surfactants on chloride binding in cement paste
ترجمه فارسی عنوان
تأثیر سورفکتانتها بر روی اتصال کلرید در خمیر سیمان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
چکیده انگلیسی
The influence of surfactants on chloride binding in cement paste has been investigated in this paper. Three surfactants, such as TEA-Lauryl sulfate (TEALS), sodium dodecyl benzene sulfonate (SDBS) and dodecyl polyglucoside (DPG) were used to represent as cationic, anionic and nonionic surfactants, respectively. The chloride binding was determined using the equilibrium method proposed by Tang Luping. X-ray powder diffractometer (XRD) was applied to characterize the phase structures of as-obtained paste specimens. It has been found that TEA-Lauryl sulfate (TEALS) increases the chloride binding, but sodium dodecyl benzene sulfonate (SDBS) and dodecyl polyglucoside (DPG) reduce the chloride binding. All the surfactants mainly affect the physical absorption of chloride ions, and exert a minor influence on the chemical binding of chloride ions. Freundlich isotherm can better describe the relationship between the amounts of bound chloride ions in cements with various surfactants and free chloride concentration than Langmuir isotherm. Besides, the later addition of surfactant has an effect on the chloride binding similar to the former addition of surfactant.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 125, 30 October 2016, Pages 369-374
نویسندگان
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