نبذة مختصرة : The increase of construction and demolition (C&D) waste generation has raised new regulations for C&D waste prevention among the European countries, including the obligation to quantify the C&D waste expected to be generated during construction works. This has led to the development of many research works. However, almost none regarding civil engineering works. Therefore, the aim of this research study is to provide a C&D waste estimation tool for railway works. For this purpose several Spanish railway roads have been analyzed in order to develop an equation to estimate in advance the volume of C&D waste likely to be generated, analyzing the category of C&D waste generated for each of the functional units considered. From the analysis performed it has been proved a relationship between the amount of C&D waste generated and the functional units of railways. In short, the methodology presented can help in assigning an optimal and systematic management of the C&D waste produced and assist the construction agents in developing the waste management plans according to the existing legislation.
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