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• The Impact of Al₂O₃ and Multi-Wall Carbon Nanotubes on the Morphology of Roller-Compacted Concrete

  A. karami, Y. Zandi, S. Ebrahimiasl, R. Dabiri, R. Poursorkhabi

  Yousef Zandi's personal collection (2022). 2

  
  

  Abstract

  Roller-compacted concrete (RCC) is a dry, zero-slump concrete prepared from the same ingredients as conventional cement but with a lower cement percentage. It is frequently compacted in the same way as dirt is. RCC is utilized chiefly to build massive structures such as dams and vast horizontal surfaces like highway foundations. Because of the low cement concentration, it slows the rise of temperature in mass concrete and decreases thermal strains. However, this paper analyzes the possibility of a chemical link forming between functionalized Multi-Wall Carbon Nanotubes and Nano-alpha Alumina in Roller-Compacted Concrete (RCC) structure using spectroscopic analysis. Various characterization methods, including X-ray diffraction patterns, Fourier-transform infrared (FT-IR) spectrometry, and scanning electron microscopy (SEM), were employed to analyze the nanocomposite's interaction. Based on X-ray diffraction pattern results, Multi-Wall Carbon Nanotubes (MWCNT) peaks show that the powder is amorphous, but it becomes crystalline when combined at high temperatures. The X-Ray diffraction (XRD) profile of the carbon nanotube-doped alumina sample reflects the leading share of Al2O3, with angles and diffraction plates of Al2O3 being the same as α- Al2O3 orthorhombic crystalline phase owing to the low carbon concentration. Besides, scanning electron microscope analysis revealed that α-Al2O3 powder samples without MWCNT and containing MWCNT have a shell state that the doped sample tends to be spherical.

  Abstract
  Roller-compacted concrete (RCC) is a dry, zero-slump concrete prepared from the same ingredients as conventional cement but with a lower cement percentage. It is frequently [...]

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• The Impact of Al2O3 and Multi-Wall Carbon Nanotubes on the Morphology of Roller-Compacted Concrete

  Y. Zandi, A. Rava, S. Ebrahimiasl, R. Dabiri, R. Poursorkhabi

  Yousef Zandi's personal collection (2022). 1

  
  

  Abstract

  Roller-compacted concrete (RCC) is a dry, zero-slump concrete prepared from the same ingredients as conventional cement but with a lower cement percentage. It is frequently compacted in the same way as dirt is. RCC is utilized chiefly to build massive structures such as dams and vast horizontal surfaces like highway foundations. Because of the low cement concentration, it slows the rise of temperature in mass concrete and decreases thermal strains. However, this paper analyzes the possibility of a chemical link forming between functionalized Multi-Wall Carbon Nanotubes and Nano-alpha Alumina in Roller-Compacted Concrete (RCC) structure using spectroscopic analysis. Various characterization methods, including X-ray diffraction patterns, Fourier-transform infrared (FT-IR) spectrometry, and scanning electron microscopy (SEM), were employed to analyze the nanocomposite's interaction. Based on X-ray diffraction pattern results, Multi-Wall Carbon Nanotubes (MWCNT) peaks show that the powder is amorphous, but it becomes crystalline when combined at high temperatures. The X-Ray diffraction (XRD) profile of the carbon nanotube-doped alumina sample reflects the leading share of Al2O3, with angles and diffraction plates of Al2O3 being the same as α- Al2O3 orthorhombic crystalline phase owing to the low carbon concentration. Besides, scanning electron microscope analysis revealed that α-Al2O3 powder samples without MWCNT and containing MWCNT have a shell state that the doped sample tends to be spherical.

  Abstract
  Roller-compacted concrete (RCC) is a dry, zero-slump concrete prepared from the same ingredients as conventional cement but with a lower cement percentage. It is frequently [...]

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