کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5468995 | 1519053 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Cement-bentonite-iron interactions on small scale tests for testing performance of bentonites as a barrier in high-level radioactive waste repository concepts
ترجمه فارسی عنوان
تعامل سیمان-بنتونیت-آهن در آزمایش های مقیاس کوچک برای آزمایش عملکرد بنتونیت ها به عنوان یک مانع در مفاهیم مخزن رادیواکتیو بالا
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کلمات کلیدی
زباله های رادیواکتیو سطح بالا، کنترل کیفیت بنتونیت، تعامل سیمان-بنتونیت، خوردگی آهن،
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
چکیده انگلیسی
In this study a small scale setup was tested that included the performance of bentonite in contact with the bentonite-iron and bentonite-cement interfaces. The tests proved that the different bentonites reacted differently. The mini-tests could be an appropriate way to test the behavior of bentonite in the final repository taking into account the appropriate proportions of cement, bentonite, and iron considered in the repository. The excess of cement used in this study has shown that the cement reacts very aggressively, which masked the reactions taking place at the bentonite-iron interface. A first overview of quantitative data about bentonite performance can be an example gained from both the mass loss of the metal pellet and the drop of cation exchange capacity (CEC) of the bentonite after the tests. Taking both these values into account does not permit deep understanding of the complex processes but allows for a quantitative comparison of the performance of different bentonites. Amongst the three bentonites tested the Ca-bentonite B36 from Slovakia showed on average less loss of swelling capacity (CEC) and hence is regarded superior to both other materials.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 135, January 2017, Pages 427-436
Journal: Applied Clay Science - Volume 135, January 2017, Pages 427-436
نویسندگان
Sandra Balmer, Stephan Kaufhold, Reiner Dohrmann,