Abstract
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 five 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 coefficients μm, mean free path MFP, effective atomic number $Z_{eff}$ 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 coefficient) was calculated and the results presented. The results show that the sample which contains 10% marble has the highest compressive strength and potentially good gamma ray and neutron radiation shielding properties.
Highlights
Radiation shielding has recently become an important research topic in nuclear science, and is defined as the ability to reduce radiation effects through interaction with the shielding material
To accomplish these goals five 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 coefficients, mean free path (MFP), effective 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
The results show that the sample containing 10 % marble has the highest compressive strength and potentially good gamma ray and neutron radiation shielding properties
Summary
Radiation shielding has recently become an important research topic in nuclear science, and is defined as the ability to reduce radiation effects through interaction with the shielding material Several parameters such as attenuation effectiveness, strength, and thermal properties influence the. Among these mining and industrial by-products is marble dust powder, generated during the marble cutting process. Akkurt and Altindag (2012) determined, both experimentally and theoretically, the linear attenuation coefficients of concrete containing marble powder in its fine aggregate form. The measured and calculated linear attenuation coefficients showed good agreement They concluded that marble can be used as an aggregate in the production of shielding concrete [8]. Aliabdo et al (2014) found that using marble powder as a partial replacement for cement or sand improves the physical properties of concrete [9]. In the range 1 to 100 MeV uncertainties from pair production estimates are 2 to 3 percent, while above 100 MeV they are 1 to 2 percent [20]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
