준설토 재활용을 위한 고화준설토의 역학적 특성에 따른 식생발아

Abstract

As various ocean and port construction businesses were progressed, generation of dredged soil and cost of disposal are increased or maintained consistently. And it was treated by disposal or landfill because of economical and environmental problems. Disposal or landfill of dredged soil have bad effects on coastal environment, fishery, mud flat, etc. If dredged soil is contaminated, secondary contamination will be generated by heavy metal leaching, too. Therefore, active recycling of dredged soil is needed and for regulations of ocean environment such as London Dumping Convention(1972) and Kyoto protocol(1996). Meanwhile, generation of industrial waste are also increased continuously. Industrial waste is occupied more than 50% of total waste and treatment is one of the most serious problem of economic and environment. It is almost recycled to cement industry but cement industries also have many problems environmentally because of mining limestone and CO2 emission. In this study, vegetation mixing soil which is able to use in waterfront was produced to recycle dredged soil and industrial waste economically and eco-friendly. At first, binder made by industrial by-product was experimented to check applicability. Experiment conducted is unconfined compression test in order to know about mechanical characteristic. An then, Leaching test, pH measure, vegetation germination test were conducted to recycle dredged soil eco-friendly. It was compared with germination to various factor which have effect on vegetation germination and analyzed. Trough these, pH and unconfined strength were suggested to make mixed dredged soil which is able to vegetation germination.