동신대학교

초록/요약

Permeation water resulting in the reclaimed land of waste can possibly cause the second pollution, such as the underground water and environmental pollution. Accordingly, Liner layer has been installed in the reclaimed land of waste to block and purify permeation water and prevent this second pollution. The material used as Liner layer is the one for water resistance and that of less than permeability coefficient 1×10-7cm/sec is widely used. As it is very difficult to secure in bulk this natural clay with low permeability around the field, the suitable way to secure low permeable material is that we use blend with good water tightness by mixing it with natural soil which is spread in the site. While this mixed soil which can resist water is commonly used in the site, bentonite mixed soil which is widely used as Liner layer in the reclaimed land of waste is recognized in Liner and durability. However, enhanced engineering method by bentonite has some difficulties in performing actual design-construction, because specification, design method, and basic test data of the needed material in the design are unprepared. Especially the study on low permeability according to the thickness of Liner layer are very incomplete, which would cause many difficulties in determining the thickness of the proper Liner layer to maintain low permeabilityin construction. In this respect, this paper focuses on explaining the changing properties of water permeability according to the thickness of Liner layer as well as the quantity of proper admixture influenced by the engineering properties of Liner layer of the reclaimed land.