Abstract To investigate the shear strength and microstructure of undisturbed loess polluted by landfill leachate, a series of laboratory tests were carried out to determine the shear strength, mineral composition, surface morphology, particle size distribution and pore characteristics of the loess. The stress-strain curve of undisturbed soil polluted by landfill leachate showed typical strain-softening behavior. The deviatoric stress, cohesion and angle of shearing resistance of undisturbed soil decreased at increased landfill leachate concentrations, decreased by 31.03%, 30.01%, respectively. But pore water pressure was positively related to leachate concentrations. The content of primary minerals remained stable, and the content of montmorillonite and illite decreased with increased leachate concentration, reduced by 26.02%, 23.93%, respectively. Soil structure changed into an unstable honeycomb structure when the leachate concentration increased. Moreover, the average particle size decreased by 62.1%, and the specific surface area increased and then stabilized at 500 ~ 650 m2/kg. The soil particles became nonuniform and porous and their sizes gradually decreased. The pore radius of soil mainly ranged from 0.02 μm to 1 μm. The maximum radius and optimal radius of the pore increased when the leachate concentrations increased.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    An Experimental Study of Mineral and Microstructure for Undisturbed Loess Polluted by Landfill Leachate


    Beteiligte:
    Lu, Haijun (Autor:in) / Xu, Shicheng (Autor:in) / Li, Dinggang (Autor:in) / Li, Jixiang (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2018-11-02


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    An Experimental Study of Mineral and Microstructure for Undisturbed Loess Polluted by Landfill Leachate

    Lu, Haijun / Xu, Shicheng / Li, Dinggang et al. | Online Contents | 2018


    Experimental Study on Microstructure and Hydraulic Performance of Bentonite Modified Loess

    Li, Yanfeng / Xu, Jian / Wang, Zefeng et al. | Springer Verlag | 2023


    Experimental Study on Compressibility and Microstructure of Loess Solidified by Permeable Polymer

    Guo, Chengchao / Yang, Xiaodong / Zhao, Weifan | Springer Verlag | 2024


    Undisturbed telephone traffic

    Schwiderski, E. | Engineering Index Backfile | 1958


    Leachate modeling for a municipal solid waste landfill for upper expansion

    Min, Jee-Eun / Kim, Meejeong / Kim, Jae Young et al. | Springer Verlag | 2010