Resumen

ABDEL-LATIF M., A.; SAYYED, M. I.; TEKIN, H. O.  y  KASSAB, M. M.. Optimizing the shielding properties of strength-enhanced concrete containing marble. Pap. Phys. [online]. 2020, vol.12, pp.40-49. ISSN 1852-4249.  http://dx.doi.org/https://doi.org/10.4279/pip.120005.

The purpose of this study is to develop a low cost, locally produced concrete mixture with optimum marble content. The resulting mixture would have enhanced strength properties compared to the non-marble reference concrete, and improved radiation shielding properties. To accomplish these goals ve concrete mixtures were prepared, containing 0, 5, 10, 15 and 20 % marble waste powder as a cement replacement on the basis of weight. These samples were subjected to a compressive strength test. The shielding parameters such as mass attenuation coecients (m), mean free path (MFP), efective atomic number (Zeff ) and exposure build-up factors (EBF) were measured, and results were compared with those obtained using the WinXcom program and MCNPX code in the photon energy range of 0.015 - 3 MeV. Moreover, the macroscopic fast neutron removal cross-section (neutron attenuation coeficient) was calculated and the results presented. The results show that the sample containing 10 % marble has the highest compressive strength and potentially good gamma ray and neutron radiation shielding properties.

Palabras clave : Compression Strength; Mass Attenuation; Exposure Buildup Factor; Shielding Concrete; MCNPX; Fast removal cross section.

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