Potential uses of different sustainable concrete mixtures in gamma and neutrons shielding purposes

Ali, Mohamed A. E. M.; Tawfic, A. F.; Abdelgawad, Mostafa A.; Wagih, Mohamed; Omar, Ahmad Maliki

doi:10.1016/j.pnucene.2023.104598

Cited by 13 publications

(2 citation statements)

References 23 publications

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“…By speaking on concrete, considering being the most widely employed construction material around the world, plenty of researchers have worked on modifying the mix design to attain reliable radiation shielding concrete (RSC) with proper physical and mechanical properties, which are essential, especially that the designed (RSC) usually utilized in nuclear installations and should carry and resist static and dynamic loads 13 , 14 . Moreover, when the designed (RSC) is intended to be used in certain nuclear and radiological applications that encompass the emission of various hazardous radiations, such as storage of spent nuclear fuel or high-level radioactive wastes, the selected ingredients should consider all these kinds of radiations effectively and simultaneously without ignoring any possible secondary radiation that may arise 15 – 18 .…”

Section: Introductionmentioning

confidence: 99%

Experimental, analytical, and simulation studies of modified concrete mix for radiation shielding in a mixed radiation field

Nabil,

El-Samrah,

Omar

et al. 2023

Sci Rep

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The current study assessed two concrete mixes prepared using dolomite and barite/limonite aggregates to shield against both energetic photons and neutrons. After that, a designed mix which comprised barite/goethite aggregates plus fine-powdered boron carbide additive, was proposed to improve the overall radiation shielding properties and in the same time, doesn’t compromise or even improve the physic-mechanical properties of the mature concrete. The assessment started first with intensive experimental investigations to investigate the prepared mixes’ shielding capabilities against both γ-rays and fast neutrons. Then, analytical computations were performed via number of reliable software programs such as; Phy-X, NXCom, MRCsC, JANIS-4, and MCNP5, in order to confirm the experimental results and to validate the created Monte-Carlo models. Finally, an intensive radiation shielding assessment for all concrete mixes understudy using, mainly, the validated MCNP models, was performed. The obtained results have revealed the superiority of barite mixes over the dolomite mix concerning attenuating photons moreover, the proposed designed mix has shown superiority over the other two prepared mixes considering shielding against; energetic photons, fast/thermal neutrons, and secondary emitted γ-rays, which nominates this mix to be a suitable universal shield that can be used even in mixed radiation fields.

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Section: Introductionmentioning

confidence: 99%

Experimental, analytical, and simulation studies of modified concrete mix for radiation shielding in a mixed radiation field

Nabil,

El-Samrah,

Omar

et al. 2023

Sci Rep

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“…It can provide stable and zero-emission electricity to complement wind energy, solar energy, hydropower and other energy sources affected by seasonal climate change. Many scholars [6][7][8] have conducted research on nuclear energy.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on PIV Measurement and CFD Investigation of the Internal Flow Characteristics in a Reactor Coolant Pump

Lu²,

Huang

et al. 2023

Energies

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The nuclear reactor coolant pump (RCP) is the core piece of equipment of a nuclear power plant (NPP). The energy performance and internal flow characteristics of RCPs are revealed by effective measurement methods, which are helpful to understand the flow mechanism of RCPs. The present work is intended to conduct an integrated study based on the energy performance test and Particle Image Velocimetry (PIV) flow-field non-contact measurement of the RCP. In addition, the prediction results of different turbulence models are compared with experimental results in detail. Through energy performance measurement and numerical calculation analysis, it can be found that various turbulence models have the ability to predict the performance of RCPs in engineering applications. At 0.8~1.2 Φd operating conditions, the maximum error is less than 10% and the minimum error is less than 0.1% by analyzing the energy performance of numerical calculations and experimental results. The PIV results show that the velocity of the discharge nozzle varies greatly from right (outlet of diffuser channel 2) to left (outlet of diffuser channel 12) due to different flow structures. Through the qualitative and quantitative comparison of the internal flow field, it can be concluded that, except for the low flow rate, compared with other computational models, the Realizable k-ε model can better predict the internal flow field of an RCP. The reasons for the experimental error and numerical calculation error are analyzed in detail, and the results can provide a reference for forecasting an RCP internal flow field with a special and complex structure.

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Experimental investigation on static/dynamic response and γ/n shielding of different sustainable concrete mixtures

Amin

Mahfouz

Tawfic

et al. 2023

Alexandria Engineering Journal

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Potential uses of different sustainable concrete mixtures in gamma and neutrons shielding purposes

Cited by 13 publications

References 23 publications

Experimental, analytical, and simulation studies of modified concrete mix for radiation shielding in a mixed radiation field

Experimental, analytical, and simulation studies of modified concrete mix for radiation shielding in a mixed radiation field

Experimental Study on PIV Measurement and CFD Investigation of the Internal Flow Characteristics in a Reactor Coolant Pump

Experimental investigation on static/dynamic response and γ/n shielding of different sustainable concrete mixtures

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