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Determination of construction and demolition recycled aggregates composition, in considering their heterogeneity

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Abstract

This paper analyzes the influence of the mass sample and the sampling procedure on the composition determination error of recycled aggregates from construction and demolition (C&D) waste, as well as the criterion of classification of mineral materials, establishing new standard recommendations. The precise composition determination depends on the mass sample as stated by the Theory of Sampling. This mass should be higher than that recommended by the EN 932-1, especially for the determination of foreign materials such as gypsum and organic materials. Special sampling procedures should be considered. By the application of the oven-dry density distribution criterion the concrete aggregate studied could fulfill the requirements for concrete use due to a more accurate quantification of particles denser than 2.0 g/cm3 compared to the visual analysis. Thus, the use of such criterion results in a more objective and a better comprehensible classification.

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Acknowledgment

S. C. Angulo acknowledges scholarship from CNPq/Brazil.

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Authors and Affiliations

  1. Instituto de Pesquisas Tecnológicas do Estado de São Paulo, Cidade Universitária, P.O. Box 0141, 01064-970, Sao Paulo, SP, Brazil

    S. C. Angulo

  2. Bauhaus Universität Weimar, Chair of Mineral Processing of Building Materials and Reuse, Couydrastr. 7, 99421, Weimar, Germany

    A. Mueller

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  1. S. C. Angulo
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  2. A. Mueller
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Correspondence to A. Mueller.

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Angulo, S.C., Mueller, A. Determination of construction and demolition recycled aggregates composition, in considering their heterogeneity. Mater Struct 42, 739–748 (2009). https://doi.org/10.1617/s11527-008-9417-3

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  • DOI: https://doi.org/10.1617/s11527-008-9417-3

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