Salinity effect on swelling characteristics of compacted bentonite

• Autorzy: Shirazi S. M. , Wiwat S. , Kazama H. , Kuwano J. , Shaaban M. G.
• Języki publikacji: EN

Abstrakty

EN

Swelling characteristics of compacted bentonite is the most important factor for nuclear waste disposal facilities. Salinity effect on swelling behaviour of compacted bentonite was investigated experimentally. A series of one dimensional swelling deformation tests have been performed. The tests were conducted for various initial dry densities from 1.33 g/cm3 to 1.90 g/cm3 for compacted bentonite saturated with NaCl of various concentrations in solution from 0 to 4.0 M. It was found that initial dry density and concentration of NaCl strongly influence the swelling rate of bentonite. The swelling rate of bentonite decreases with increasing the concentration of NaCl. Swelling rate depends on the concentration of NaCl more than on initial dry density and loading effect. Bentonite may change from highly swelled material to coagulate in saline water. Liquid limit of bentonite is also remarkably decreased with the change of liquid from distilled water to saline one, while the plastic limit is slightly increased.

Słowa kluczowe

EN

bentonite; nuclear waste disposal; one-dimensional swelling; salinity effects; swelling behaviour; swelling characteristics; swelling rates; radioactive wastes; waste disposal

PL

bentonit; utylizacja odpadów; wpływ zasolenia; utylizacja odpadów jądrowych; wydymanie; odpady radioaktywne; unieszkodliwianie odpadów

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2011
• Tom: Vol. 37, nr 2
• Strony: 65--74
• Opis fizyczny: Bibliogr. 13 poz., rys.

Twórcy

autor

Shirazi S. M.

autor

Wiwat S.

autor

Kazama H.

autor

Kuwano J.

autor

Shaaban M. G.

• Department of Civil Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia,

Bibliografia

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