The influence of landfill gas on the hydraulic conductivity of waste

Knowledge of the hydraulic conductivity of waste is essential to the efficient and effective management of leachate in landfills. Over the past few years it has become apparent that the presence of gas in a waste landfill will affect the hydraulic conductivity. This paper reports the results of tests carried out in a large scale (2 m diameter) compression cell to investigate the influence of gas on the hydraulic conductivity of municipal solid wastes compressed to different initial stresses, at different pore water pressures.