Handy Permeability Test Method with a Single-Unit Apparatus Developed at the Solid Waste Landfill Construction Site

A new hydraulic conductivity test method was developed and applied for the clay liners in the solid waste landfill site, and has attained high accuracy and productivity. Innovation exists in the single-unit apparatus of united sampler and specimen mould. Sampling can be easily conducted on the level surface as well as on the slope by driving the sampler into the ground with a hammer. The test also can be done easily in the simplified manner in the field laboratory with a high constant water-head in a short time without transporting samples into the precision machine laboratory. This single-unit apparatus is used for permeability test in the field laboratory as well as for sampling in-situ. Hence authors named this system as a handy permeability test with a single-unit apparatus. High accuracy was obtained by water sealing mechanism in the single-unit apparatus. High productivity had been attained as that the hydraulic conductivity of 109 samples were evaluated in half a year and be conducted in every 270 2 m in the MSW landfill site.