Podrobnosti záznamu

Název
    Mechanisms controlling the behaviour of double-porosity clay fills; in situ abd centrifuge study
Autor
    Boháč, Jan
    Laue, Jan
    Najser, Jan
    Pooley, Emma
    Springman, Sarah
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Quarterly Journal of Engineering Geology and Hydrogeology
Svazek/č.
    Roč. 43, č. 2
Strany
    14
Rok
    2010
Výraz tezauru
    centrifuge
    double-porosity clay
    fills
Klíčové slovo
    Abd
    Behaviour
    Centrifuge
    Clay
    Controlling
    Double-porosity
    Fills
    Mechanisms
    Situ
    Study
Abstrakt (anglicky)
   Two instrumented embankments built on a double-porosity landfill of clayey lumps were monitored in situ and modelled in a centrifuge. The field measurements showed high compressibility of the landfill. Introductory modelling in a mini-centrifuge and oedometer testing demonstrated irreversible deformation at low stress ranges, and reversible deformation (swelling) at higher stresses, similarly to the behaviour of reconstituted material. Dry filling followed by saturation was recommended with respect to further development of the landfills in future. The geotechnical centrifuge models confirmed that permeability was controlled by the complex structure of the clayfills. There were significant initial settlements on loading due to compression of open macro voids. The double porosity structure in the fresh fill allowed excess pore pressures to dissipate quickly. Thereafter, dissipation was controlled by the permeability of the intragranular pores in the clay, once the intergranular pores ha
   d closed.
Přispěvatel
    UK Praha, Přírodovědecká fakulta
Kód přispěvatele
    UK, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012