Abstract
This study aims to investigate the reinforcement mechanism and its expression factor exerted by soft plastic in the landfill which contains many soft plastics. First, geotechnical tests were performed in order to compare the index properties between landfill sample and decomposed granite soil. Then, the tensile strain of soft plastic arranged in both samples was measured under compression process. The test result showed that the tensile strain of soft plastic arranged in landfill sample was more than 10 times that in decomposed granite soil. It is implied that uneven surface of soil particle along soft plastic in landfill sample was larger than that in the decomposed granite soil, since the landfill sample contains various types of granules which have an irregular shape. As a result, the soft plastic was elongated largely and larger tension force was generated on the soft plastic in landfill sample.
