کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7885466 | 1509757 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Sorption of radionuclides by cement-based barrier materials
ترجمه فارسی عنوان
جذب رادیونوکلئید توسط مواد مانع بر اساس سیمان
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی صنعتی و تولید
چکیده انگلیسی
This paper investigates the sorption of radionuclide ions, 137Cs+ and 90Sr2 +, by cement-based barrier materials for radioactive waste disposal. A mortar with ternary binder is prepared and powder samples are ground from the hardened material following a predetermined granulometry. After pre-equilibrium with an artificial pore solution, the sorption behaviors of powder samples are investigated through single sorption and blended sorption. The results show that: (1) no systematic difference is observed for single and blended sorptions thus the interaction between 137Cs+ and 90Sr2 + sorptions must be weak; (2) the sorption kinetics is rapid and all characteristic times are less than 1d; (3) the sorption capacity is enhanced by C-A-S-H hydrates and the measured Kd values can be predicted from C-S-H sorption data with Ca/Si ratio equal to Ca/(Si + Al) ratio.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Cement and Concrete Research - Volume 65, November 2014, Pages 52-57
Journal: Cement and Concrete Research - Volume 65, November 2014, Pages 52-57
نویسندگان
Kefei Li, Xiaoyun Pang,