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<p>Carbon dioxide (CO<sub>2</sub>) is one of the major greenhouse gases released in the atmosphere. This study aims to reduce the CO<sub>2</sub> gas emission from the construction of flexible pavement with crumb rubber modified bitumen (CRMB) in ‘traditional hot mix asphalt’ (HMA). The aim was successfully achieved by the use of as-synthesized HAP/MgFe<sub>2</sub>O<sub>4</sub> nanocomposite in the CRMB. The formation and characterization of the nanocomposite were performed by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-Ray Diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FTIR) studies. The nanocomposite was found to be very effective in the reduction of CO<sub>2</sub> gas emission from CRMB. The reduction of CO<sub>2</sub> gas emission was due to the inherent ion-dipole attraction of the nanocomposite for the CO<sub>2</sub> gas. It was observed that the addition of only 2&#xa0;mg of the nanocomposite to 4&#xa0;g of CRMB reduces 80.56% CO<sub>2</sub> emission, which was a remarkable observation of this study.</p>

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Remarkable Reduction of Carbon Dioxide Emission from Crumb Rubber Modified Bitumen by Introducing Hydroxyapatite Encapsulated Magnesium Ferrite (HAP/MgFe2O4) Nanocomposite in Varying Proportions

  • 期刊论文

  • 发表日期：

    2025年2月25日

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  • Priyam Nath Bhowmik,
  • Pranjit Barman,
  • Mokaddes Ali Ahmed,
  • Krishna Ch Das

摘要

Carbon dioxide (CO2) is one of the major greenhouse gases released in the atmosphere. This study aims to reduce the CO2 gas emission from the construction of flexible pavement with crumb rubber modified bitumen (CRMB) in ‘traditional hot mix asphalt’ (HMA). The aim was successfully achieved by the use of as-synthesized HAP/MgFe2O4 nanocomposite in the CRMB. The formation and characterization of the nanocomposite were performed by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-Ray Diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FTIR) studies. The nanocomposite was found to be very effective in the reduction of CO2 gas emission from CRMB. The reduction of CO2 gas emission was due to the inherent ion-dipole attraction of the nanocomposite for the CO2 gas. It was observed that the addition of only 2 mg of the nanocomposite to 4 g of CRMB reduces 80.56% CO2 emission, which was a remarkable observation of this study.