Research and Standardization Programme for Determination of Leaching Behaviour of Construction Materials and Wastes in the Netherlands
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For the environmental characterization of construction materials and wastes several tools are needed: (1) a classification system based on the most important physical and chemical characteristics, (2) standardized test methods for the determination of the chemical composition and the leaching properties, (3) guidelines for the interpretation of test results in relation to the proposed end use, (4) legal acceptability criteria and procedures. To make such tools available for all relevant materials a step by step standardization programme was prepared along various lines: (1) the programme must result in a complete set of standards and guidelines based on a sound scientific understanding of potential environmental impacts, (2) the programme must be supported by all relevant parties from government, building industry, and advisory bodies, (3) for a priority list of construction materials and waste products the most important standards need to be available within a period of 2–3 years; (4) all standard procedures have to be screened with respect to practical consequences and costs.