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Recycled aggregate as structural material

Abstract

The amount of construction and demolition (C&D) waste has increased considerably over the last few years. The high cost of landfill, the scarcity of natural resources coupled with the augmentation in aggregate requirement for construction, has attracted the demand and interest in aggregates from non-traditional sources. In particular, there is an increased interest from the construction industry concerning the use of recycled aggregates (RA) to replace aggregates from natural sources such as from recycled C&D wastes. Low-grade applications, including sub-base and roadwork, have been implemented in many countries; however, higher-grade activities are rarely considered. This research examines whether the use of RA in concrete production is appropriate. The utilization of RA in concrete opens a whole new range of possibilities in the reuse of materials in the building industry. In the context of this research, several aggregates’ properties, which affect concrete’s production, were tested using international standards. Thereafter, in order to determine whether the RA are suitable for use in the production of concrete, the results where compared with the requirements of the Greek standard ELOT 401—the Greek regulation of concrete technology (1997) and the European standard EN12620. The tests’ results, led us to the conclusion that fine RA should not be used due to their low quality, while coarse RA are not excluded from concrete production.

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Acknowledgments

The authors would like to thank “Anakiklosi Adranon Macedonias” (Macedonia’s aggregates recycling company) for providing the samples of RA and especially Mr. Christoglou for his useful advice. The authors also wish to acknowledge TITAN Group and Mr. Leptokaridis in particular for their advice and experimental assistance.

Conflict of interest

The authors do not have any conflict of interest with any organisation. In particular no organization may in any way gain or lose financially from the results or the conclusions of their study. Furthermore, the authors have no competing financial interests to any organization.

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Correspondence to A. A. Tsoumani.

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Tsoumani, A.A., Barkoula, NM. & Matikas, T.E. Recycled aggregate as structural material. Waste Biomass Valor 6, 883–890 (2015). https://doi.org/10.1007/s12649-015-9385-0

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  • DOI: https://doi.org/10.1007/s12649-015-9385-0

Keywords

  • C&D waste
  • Recycled aggregate
  • Concrete
  • Geometrical–physical properties