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<p>This study investigates the effect of titanium dioxide (TiO<sub>2</sub>) incorporation on the density, thermal stability, and gamma-ray shielding performance of barite concrete. Four composites were prepared by partially replacing silica sand with TiO<sub>2</sub> (0.0–1.5&#xa0;g). The bulk density increased from 3.28 to 3.45&#xa0;g/cm³, indicating improved particle packing. Linear attenuation coefficients (LACs) at 0.015&#xa0;MeV increased significantly from 89.034 to 104.280&#xa0;cm⁻¹ with increasing TiO<sub>2</sub> content, confirming enhanced photon attenuation. Thermal analyses revealed reduced mass loss in modified samples, with minimum degradation (83%) observed in 1.0 and 1.5&#xa0;g TiO<sub>2</sub> mixes compared to 99% for the control. Differential thermal analysis indicated phase transitions between 210 and 240&#xa0;°C. Overall, TiO<sub>2</sub> addition improved density-driven shielding efficiency while maintaining acceptable thermal performance.</p>

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Thermal behavior, density enhancement, morphological characterization, and theoretical gamma-ray attenuation assessment of TiO2-modified barite concrete

  • 期刊论文

  • 发表日期：

    2026年6月17日

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  • Ghadan Mohammad Aleid,
  • Anoud Saud Alshammari,
  • Sheamaa T. Al-Dabag,
  • Amal Mohamed Ahmed Ali,
  • M. F. S. H. AL-Kamali,
  • U. Rilwan,
  • Laith Ahmed Najam

摘要

This study investigates the effect of titanium dioxide (TiO2) incorporation on the density, thermal stability, and gamma-ray shielding performance of barite concrete. Four composites were prepared by partially replacing silica sand with TiO2 (0.0–1.5 g). The bulk density increased from 3.28 to 3.45 g/cm³, indicating improved particle packing. Linear attenuation coefficients (LACs) at 0.015 MeV increased significantly from 89.034 to 104.280 cm⁻¹ with increasing TiO2 content, confirming enhanced photon attenuation. Thermal analyses revealed reduced mass loss in modified samples, with minimum degradation (83%) observed in 1.0 and 1.5 g TiO2 mixes compared to 99% for the control. Differential thermal analysis indicated phase transitions between 210 and 240 °C. Overall, TiO2 addition improved density-driven shielding efficiency while maintaining acceptable thermal performance.