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Determination of Hydro-Mechanical Characteristics of Biodegradable Waste- Laboratory and Landfill Site

Abstract : The present research work deals with the study of hydro-mechanical characteristics of biodegradable waste at laboratory scale and landfill site. After a brief introduction of landfills and final treatment of waste (Ch. 1), physical, mechanical and hydraulic parameters have been defined by analogy with porous media (Ch. 2). The research work presented, on one hand, casts light on the flow properties and, on the other, characterizes mechanical properties of biodegradable waste. Novel laboratory experiments on fresh as well as on biodegraded waste, vis-a-vis compression-permeability of gas, were conducted (Ch. 3). These experiments were aimed at measuring the evolution of gas conductivity as a function of settlement and degree of saturation in leachate, allowing eventually to validate the double porosity model proposed by Stoltz (Thesis 2009) (Ch. 4). Extending on the mechanical properties, a new version of software ISPM - Olivier (Thesis 2003), a modelling tool meant for settlement prediction of waste, has been proposed. The new model, implemented on the study of settlement of two cells in question, served to determine the coefficient of secondary compression by retro-analysis (Ch. 5). Lastly, shear strength of waste extracted by drilling from a landfill, has been characterized as a function of different state parameters (Ch. 6). The latter values hence achieved have been employed for site stability calculations.
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Submitted on : Friday, January 14, 2011 - 5:40:25 PM
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Kiran Nousheen Arif. Determination of Hydro-Mechanical Characteristics of Biodegradable Waste- Laboratory and Landfill Site. Earth Sciences. Université Joseph-Fourier - Grenoble I, 2010. English. ⟨tel-00556000⟩

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