| Popis: |
For all major cities, municipal solid waste (MSW) landfills is a major concern regarding its impact on environment and the hazardous effect on water table below the MSW fill. Majority portion of the landfills above the ground surface remains unsaturated, and thus, suction is playing very much important role in terms of its stability and compressibility criterion. The Pirana MSW (Ahmedabad) material which used here is already more than 15-years old and achieved the height of more than 25 m. The study attempts to observe the suction characteristics of the waste for different moisture content and to establish the relation between suction parameters and strength of the waste. To check its suitability as the alternate material for construction purpose, the same study is carried out on silty sand so that the influence of the volatile matters present in the MSW on suction can be observed. To understand the behavior of compressed fill under the submergence condition and to measure suction, the MSW and silty sand samples were soaked for 24 h into water. The average pore size of the compressed mass is carried out using the relation of matric suction to pore size, and the void formation is observed in high-magnification microscope to visually check and co-relate the variation in pore size. |
