کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
11017658 | 1722626 | 2018 | 35 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Intra-aggregate water content and void ratio model for MX-80 bentonites
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
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چکیده انگلیسی
This paper proposes a model to define the water content present in the intra-aggregate space (microstructure) of MX-80 bentonites with different sodium and calcium contents. Data from a broad number of water retention curves was considered, both from sodium-exchanged and calcium-exchanged MX-80 bentonites, as well as from natural samples. Models both for Na-exchanged and Ca-exchanged samples were first fitted. Then, a general model for natural bentonites was proposed based on the sodium and calcium content as exchangeable cations in the bentonite. The model was compared against a number of water retention data, achieving good fits. Given the one-to-one relationship between microstructural water content and void ratio, the model also allows characterising the microstructural deformability of the soil, which is an essential issue when using a double porosity approach to model the MX-80 bentonite behaviour.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Engineering Geology - Volume 246, 28 November 2018, Pages 131-138
Journal: Engineering Geology - Volume 246, 28 November 2018, Pages 131-138
نویسندگان
Gema De la Morena, Laura Asensio, Vicente Navarro,