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On the Possibility of Using Recycled Mixed Aggregates and GICC Thermal Plant Wastes in Non-Structural Concrete Elements

Author

Listed:
  • Carlos Rodríguez

    (Department of Construction Materials, Centro Tecnológico de la Construcción, Pol. Oeste, 30820 Alcantarilla, Spain)

  • Isidro Sánchez

    (Departamento de Ingeniería Civil, University of Alicante, 03080 Alicante, Spain)

  • Isabel Miñano

    (Department of Architecture and Building Technologies, Technical/Polytechnic University of Cartagena, Paseo Alfonso XIII, 30203 Cartagena, Spain)

  • Francisco Benito

    (Department of Architecture and Building Technologies, Technical/Polytechnic University of Cartagena, Paseo Alfonso XIII, 30203 Cartagena, Spain)

  • Marta Cabeza

    (ENCOMAT Group, University of Vigo, 36310 Vigo, Spain)

  • Carlos Parra

    (Department of Architecture and Building Technologies, Technical/Polytechnic University of Cartagena, Paseo Alfonso XIII, 30203 Cartagena, Spain)

Abstract

Industrial wastes are often used as aggregate in concrete production to promote a more sustainable construction and to reduce production costs. This article presents the results of an experimental campaign on the influence of replacing natural aggregate with several construction and demolition wastes (C&DW) as recycled aggregate, as well as the use of fly ash and slag, wastes produced in Gas Incinerator Combined Cycle (GICC) thermal power plants, in the mix design of non-structural concrete. Different percentages of natural aggregates were substituted with recycled aggregates either coming from construction and demolition wastes, or from the coarse fraction of the slags from thermic plants in the manufacture of concrete. The mechanical properties, capillary water absorption, density, carbonation, chloride ingress and sulphate resistance have been tested. The results show a decrease in properties when C&DW are used. Fine fraction of slag and fly ash has an important advantage, and can even improve the long term properties of concrete prepared with natural aggregates. Coarse fraction of slag as a recycled aggregate generally improves most of the properties of manufactured concretes.

Suggested Citation

  • Carlos Rodríguez & Isidro Sánchez & Isabel Miñano & Francisco Benito & Marta Cabeza & Carlos Parra, 2019. "On the Possibility of Using Recycled Mixed Aggregates and GICC Thermal Plant Wastes in Non-Structural Concrete Elements," Sustainability, MDPI, vol. 11(3), pages 1-19, January.
    • Handle: RePEc:gam:jsusta:v:11:y:2019:i:3:p:633-:d:200766
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    References listed on IDEAS

    as
    1. José Marcos Ortega & Rosa María Tremiño & Isidro Sánchez & Miguel Ángel Climent, 2018. "Effects of Environment in the Microstructure and Properties of Sustainable Mortars with Fly Ash and Slag after a 5-Year Exposure Period," Sustainability, MDPI, vol. 10(3), pages 1-20, March.
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    Cited by:

    1. Carlos Rodriguez & Isabel Miñano & Carlos Parra & Pedro Pujante & Francisco Benito, 2021. "Properties of Precast Concrete Using Food Industry-Filtered Recycled Diatoms," Sustainability, MDPI, vol. 13(6), pages 1-13, March.

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