Akademik Veri Yönetim Sistemi
Journal of Building Engineering, cilt.98, 2024 (SCI-Expanded)
This study comprehensively evaluates the gamma-ray and neutron shielding properties of various concrete types such as Standard Concrete, Hematite Concrete, PC00, HC50, and lead-enriched concretes (e.g., Concrete+50PbO, Concrete+50PbO2, and Concrete+50PbTiO3) using MCNP simulations and Phy-X/PSD code. The results indicate that lead-enriched concretes exhibit superior gamma-ray attenuation capabilities, with Concrete+50PbO2 showing the lowest HVL and TVL (approximately 33 % reduction compared to Standard Concrete), values at 15 MeV. Concrete+50PbO2 also demonstrated a 33 % reduction in TF at 0.662 MeV compared to Standard Concrete. Additionally, Standard Concrete demonstrated the highest fast neutron removal cross section (ΣR) of approximately 0.22 1/cm due to its high hydrogen content. The findings emphasize the critical role of heavy elements like lead in enhancing concrete's shielding performance, making them suitable for nuclear safety applications. It can be concluded that the incorporation of heavy elements into concrete compositions is essential for achieving optimal radiation protection in high-radiation environments.