For promoting the utilization and management of inorganic recycled materials (Secondary Materials), this project made an inventory of distribution from the basic-oxygen-furnace (BOF) slag, oxidizing slag, reducing slag, coal ash, inorganic sludge and recycled asphalt pavement and research on the supply and demand of sand and gravel businesses in Taiwan to predict market demand for recycled materials to replace natural sand and gravel. In order to improve the multiple distribution of inorganic recycled materials, in addition to complete field survey, this project also conducted environmental leaching tests of recycled materials to draft specifications for the use of recycled materials in land and sea areas, and to improve quality of technology and management integration. Meanwhile, for promoting the application of inorganic recycled materials in the construction of the port area, this project took stock of the integrated evaluation and planning of the use of inorganic recycled materials in the development of port in Taiwan, and proposes short-term plans, medium-term plans and long-term plans for the using recycled materials in Taipei Port, Taichung Port and Kaohsiung Port. In order to speed up the development of Taipei Port and promote the application of incinerating recycled aggregate, this project has completed the environmental leaching tests of incinerating recycled aggregate and the on-site leaching test of incinerating recycled aggregate in FRP tank to confirm the effect of the experimental results which would be used as a reference for the next phase of testing.

Inorganic recycled materials, Environmental leaching test, Waste-to-resource transformation