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      Green Concrete Based on Quaternary Binders with Significant Reduced of CO2 Emissions

      Energies
      MDPI AG

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          Abstract

          The article presents studies of plain concretes prepared based on a quaternary binder containing various percentages of selected supplementary cementitious materials (SCMs). The possibilities of nanotechnology in concrete technology were also used. An additional important environmental goal of the proposed solution was to create the possibility of reducing CO2 emissions and the carbon footprint generated during the production of ordinary Portland cement (OPC). As the main substitute for the OPC, siliceous fly ash (FA) was used. Moreover, silica fume (SF) and nanosilica (nS) were also used. During examinations, the main mechanical properties of composites, i.e., compressive strength (fcm) and splitting tensile strength (fctm), were assessed. The microstructure of these materials was also analyzed using a scanning electron microscope (SEM). In addition to the experimental research, simulations of the possible reduction of CO2 emissions to the atmosphere, as a result of the proposed solutions, were also carried out. It was found that the quaternary concrete is characterized by a well-developed structure and has high values of mechanical parameters. Furthermore, the use of green concrete based on quaternary binders enables a significant reduction in CO2 emissions. Therefore quaternary green concrete containing SCMs could be a useful alternative to plain concretes covering both the technical and environmental aspects. The present study indicates that quaternary binders can perform better than OPC as far as mechanical properties and microstructures are concerned. Therefore they can be used during the production of durable concretes used to perform structures in traditional and industrial construction.

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          Most cited references158

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          Supplementary cementitious materials

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            The greening of the concrete industry

            C. Meyer (2009)
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              Global strategies and potentials to curb CO2 emissions in cement industry

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                Author and article information

                Contributors
                (View ORCID Profile)
                Journal
                ENERGA
                Energies
                Energies
                MDPI AG
                1996-1073
                August 2021
                July 28 2021
                : 14
                : 15
                : 4558
                Article
                10.3390/en14154558
                51aafea4-4937-4597-9584-2b0e941f7d08
                © 2021

                https://creativecommons.org/licenses/by/4.0/

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