Electrokinetic control of the growth of gypsum aggregates in compacted montmorillonite
Electrokinetic control of the growth of gypsum aggregates in compacted montmorillonite
复制标题
压实蒙脱土中石膏骨料生长的动电控制
DOI:
10.1016/j.clay.2019.105206
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发表时间:
2019
影响因子:
5.6
通讯作者:
Tanaka Shingo
中科院分区:
文献类型:
--
作者:
Isokawa Yuya;Nakauchi Daisuke;Okada Go;Kawaguchi Noriaki;Yanagida Takayuki;Masaaki Suzuki;Tanaka Shingo
Mineral precipitation and its impact on the barrier functions of clayey materials have attracted attention in the geological disposal of radioactive wastes. In this study, the growth of gypsum aggregates in compacted montmorillonite was investigated using the electrokinetic method. The results demonstrated that the morphology of aggregates can be partially controlled by adjusting the initial concentration of Ca in Na/Ca mixed montmorillonite. In particular, a lower initial Ca concentration maintained for long periods of time engendered the growth of gypsum as a layer of large aggregates up to 700 μm. The layer of gypsum aggregates was made for a short duration (1 day) without excess salt remaining around the layer. The short duration and the absence of excess salt represent the main advantage of the electrokinetic method compared to a counter diffusion method to form artificial precipitates in clayey materials. Techniques to enhance and control aggregates are useful to prepare altered bentonite, which can be used to evaluate the impact of precipitates and their morphologies on the diffusivity and permeability of compacted bentonite.
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DOI:
10.1016/j.egypro.2017.09.450
发表时间:
2017
期刊:
Energy Procedia
影响因子:
--
作者:
Yuta Fukatsu;L. R. Loon;A. Shafizadeh;D. Grolimund;Y. Ikeda;Takehiko Tsukahara
通讯作者:
Takehiko Tsukahara
影响因子:
3.7
作者:
Michael M. Mbogoro;M. Peruffo;M. Adobes;E. L. Field;M. O’Connell;P. Unwin
通讯作者:
P. Unwin
影响因子:
5
作者:
Poonoosamy, J.;Curti, E.;Mader, U.
通讯作者:
Mader, U.
影响因子:
3.7
作者:
Jenni, A.;Gimmi, T.;Cloet, V.
通讯作者:
Cloet, V.
影响因子:
4.6
作者:
Prasianakis NI;Curti E;Kosakowski G;Poonoosamy J;Churakov SV
通讯作者:
Churakov SV