نتایج جستجو برای: modified bentonites

تعداد نتایج: 250953  

Journal: :Journal of contaminant hydrology 2003
Michael H Bradbury Bart Baeyens

Bentonites of various types are being investigated in many countries as backfill materials in high-level radioactive waste disposal concepts. Being able to understand the chemistry of the porewater in compacted bentonite is very important since it is critical to predicting radionuclide solubilities and to the synthesis of sorption data bases, and hence to repository safety studies. In this pape...

Journal: :Mineralogical Journal 1957

Emami, Mohammad hashem, Modabberi, Soroush, Sheikh Zakariaee, Seyed Jamal, Tarabi, Sahar,

Momen Abad mining district is a part of Eastern Iranian bentonite zone, located in Eocene-Oligocene volcanic belt. Mineralogical study of bentonites by XRD method introduced smectite and cristobalite as major mineralogical phases and plagioclase, alkali feldspar, paragonite, zeolite (heulandite and clinoptilolite), mica-illite, and quartz as minor phases. SEM imaging of bentonites shows that pl...

Journal: :Environmental Earth Sciences 2023

Abstract This paper presents a database of thermo-hydro-chemo-mechanical tests on bentonites, which has been named “Bento_DB4THCM”. After comprehensive literature review, set experimental have compiled. The data are used to perform validation exercises for numerical codes simulate the coupled thermo-hydro-mechanical and geochemical behaviour bentonites. contains information required simulation ...

Journal: :Applied Clay Science 2021

The temperature effect on the microstructure deformability of compacted bentonites was assessed using a Clausius-Clapeyron type equation. To this end, vapor adsorption data obtained at different temperatures under low water content conditions used, identifying changes in microstructural with void volume. formulation proposed allows for an extension 2D-models used macroscopic double-porosity app...

Journal: :Journal of the Japanese Association for Petroleum Technology 1964

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