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<p>The granite stone processing operations generates tonnes of non-decomposable fine powder wastes. Utilizing this hazardous waste in the manufacturing of geopolymer concrete (GPC) would result in creating an eco-friendly environment through sustainable concrete technology. The major goal of this research endeavor is to conduct an experimental investigation regarding the viability of using granite waste (GW) as a fine/natural aggregate replacement in flyash (FA) and ground granulated blast furnace slag (GGBS) as binder for GPC in development of paver blocks to overcome the usage of traditional materials. The proportion of GW&#xa0;replacement and FA and GGBS&#xa0;served as the experimental parameter. Concrete mixes were made using GW&#xa0;replaced for 0%, 10%, 20% and 30% of the fine/natural aggregate. Diverse mechanical properties, including compressive strength, split tensile strength and flexural strength were analyzed. Durability features such as water absorption, ultrasonic pulse velocity (UPV), carbonation, chloride penetration, salt attack&#xa0;have been evaluated to assure the dependability of developed paver blocks use in aggressive environmental conditions. Scanning Electron Microscopy &amp; Energy Dispersive Spectroscopy (SEM–EDS), X-Ray Diffraction (XRD) and Fourier transform Infrared Spectroscopy (FTIR) tests are also used to analyze microstructure. Life cycle assessment (LCA) is used to evaluate environmental impacts, embodied energy and carbon dioxide emissions and finally cost analysis to analyze economical aspects. The test findings showed that replacing natural river sand with GW up to 20% is beneficial for GPC production without compromising the strength and durability standards and contribute to less CO<sub>2</sub> emissions.</p> Graphical abstract <p></p>

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Utilizing granite waste in geopolymer concrete paver blocks for sustainable and high performance solutions in light traffic applications

  • 期刊论文

  • 发表日期：

    2025年6月2日

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  • Mani Rathnam Pesaramelli,
  • Ramesh Nayaka,
  • M. V. N. Siva Kumar

摘要

The granite stone processing operations generates tonnes of non-decomposable fine powder wastes. Utilizing this hazardous waste in the manufacturing of geopolymer concrete (GPC) would result in creating an eco-friendly environment through sustainable concrete technology. The major goal of this research endeavor is to conduct an experimental investigation regarding the viability of using granite waste (GW) as a fine/natural aggregate replacement in flyash (FA) and ground granulated blast furnace slag (GGBS) as binder for GPC in development of paver blocks to overcome the usage of traditional materials. The proportion of GW replacement and FA and GGBS served as the experimental parameter. Concrete mixes were made using GW replaced for 0%, 10%, 20% and 30% of the fine/natural aggregate. Diverse mechanical properties, including compressive strength, split tensile strength and flexural strength were analyzed. Durability features such as water absorption, ultrasonic pulse velocity (UPV), carbonation, chloride penetration, salt attack have been evaluated to assure the dependability of developed paver blocks use in aggressive environmental conditions. Scanning Electron Microscopy & Energy Dispersive Spectroscopy (SEM–EDS), X-Ray Diffraction (XRD) and Fourier transform Infrared Spectroscopy (FTIR) tests are also used to analyze microstructure. Life cycle assessment (LCA) is used to evaluate environmental impacts, embodied energy and carbon dioxide emissions and finally cost analysis to analyze economical aspects. The test findings showed that replacing natural river sand with GW up to 20% is beneficial for GPC production without compromising the strength and durability standards and contribute to less CO2 emissions.

Graphical abstract