Composite Compressibility Model for Municipal Solid Waste

Reliability analysis of municipal solid waste landfill settlements

“…An attempt has been made in this study to explicitly understand the settlement behaviour of MSW landfills in a more practical perspective using a simple compressibility model as presented by Marques et al (2003). The heterogeneity of MSW and the variability of its properties have led us to perform a reliability analysis in order to account for the uncertainty in its behavior.…”

“…(2) slippage and reorientation of the particles and because of delayed compression of some of the MSW constituents and time-dependent mechanical creep, which occurs because of the long-term (3) biological decomposition of the waste, which is a consequence of anaerobic biodegradation of organic matter, which induces a loss of solid mass mainly converted into biogas and leachate. Marques et al (2003) presented a model to obtain the compression of MSW in terms of primary compression in response to applied load, secondary mechanical creep, and time-dependent biological decomposition. The model performance was assessed using data from the Bandeirantes Landfill, which is a well-documented landfill located in Sao Paulo, Brazil, in which an instrumented test fill was constructed.…”

Análisis de los asentamientos en los rellenos sanitarios La Pradera y Curva de Rodas

“…The records of the survey control points were used to calibrate two models extracted from the literature developed to reproduce the behavior of settlements in Municipal Solid Waste (MSW) over time (Exponential model [10] and Marques model [15]). Then the Marques model was selected [15], since it incorporates primary and secondary settlements, both mechanical and biodegradation.…”

“…The records of the survey control points were used to calibrate two models extracted from the literature developed to reproduce the behavior of settlements in Municipal Solid Waste (MSW) over time (Exponential model [10] and Marques model [15]). Then the Marques model was selected [15], since it incorporates primary and secondary settlements, both mechanical and biodegradation. For the parameters of this model fitting curves were generated as a function of the height of the column of MSW, being able to estimate settlement curves that approached the registers of the control points, so that the adjustment curves could be applied in landfills of similar characteristics.…”

“…Se usaron las lecturas de los puntos de control topográfico para calibrar dos modelos extraídos de la literatura desarrollados para reproducir el comportamiento de los asentamientos en los residuos sólidos urbanos (RSU) a través del tiempo (modelo Exponencial [10] y modelo de Marques [15]). Luego se seleccionó el modelo de Marques [15], pues conceptualmente incorpora los asentamientos primarios y secundarios, tanto mecánicos como por descomposición. Para los parámetros de este modelo se generaron curvas de ajuste en función de la altura de la columna de los RSU, logrando estimar curvas de asentamiento que se aproximaron a los registros de los puntos de control, por lo cual las curvas de ajuste podrían ser aplicadas en rellenos de características similares.…”