scholarly journals New Composite Material Based on Heavy Concrete and Basalt-Boron Fiber for Neutron Radiation Shielding Properties

2019 ◽  
pp. 19-25 ◽  
Author(s):  
I. Romanenko ◽  
M. Holiuk ◽  
A. Nosovsky ◽  
T. Vlasenko ◽  
V. Gulik
Keyword(s):  
Composite Material ◽  
Neutron Radiation ◽  
Radiation Shielding ◽  
Nuclear Industry ◽  
Protective Properties ◽  
Horizon 2020 ◽  
Boron Fiber ◽  
Fast Fission ◽  
Fission Neutrons ◽  
Shielding Properties

It is necessary to have reliable radiation protection for safe operation of different radiation sources. Radiation shielding properties have been studied for a long time both in our country and abroad. However, there is a strong necessity to develop new composite materials, which will provide protection against radiation and have improved mechanical and economic characteristics. The paper describes a new composite material for neutron radiation shielding properties based on heavy concrete with serpentinite aggregate and with basalt-boron fiber with different concentrations of fiber boron oxide for using in biological shielding in nuclear industry. Protective properties of the new composite material were investigated with different neutron sources: 1) neutrons with 14 MeV energy; 2) fast fission neutrons for U-235; 3) fast fission neutrons for U-235 after passing a water layer. The simulation of the neutron radiation in presented composite material with adding crushed stone aggregate and serpentinite aggregate is performed by Monte Carlo Serpent code. It is shown that basalt-boron fibers in concrete improve the protective properties of concrete against neutron irradiation for neutrons with different energies, but the most effective is the addition of a basalt-boron fiber in the case of thermal neutrons. This research was supported by Horizon 2020 ERA-NET Support Programme, Research Grant Agreement No 7.9-3/18/7 (“Development of Boron-Infused Basalt-Fiber Reinforced Concrete for Nuclear and Radioactive Waste Management Applications”). Implementation of activities described in the Roadmap to Fusion during Horizon 2020 through a joint programme of the members of the EUROfusion consortium (2014-2020), Work Package PMI. Also, this research was carried out with the financial support of the IAEA, within the terms and conditions of the Research Contract20638 in the framework of the Coordinated Research Project (CRP) “Accelerator Driven Systems (ADS) Applications and Use of Low-Enriched Uranium in ADS (T33002)’’ within the Project “The Two-Zone Subcritical Systems with Fast and Thermal Neutron Spectra for Transmutation of Minor Actinides and Long-Lived Fission Products”.

scholarly journals New composite material based on heavy concrete reinforced by basalt-boron fiber for radioactive waste management

2019 ◽  
Vol 5 ◽  
pp. 22
Author(s):  
Iryna Romanenko ◽  
Maryna Holiuk ◽  
Pavlo Kutsyn ◽  
Iryna Kutsyna ◽  
Hennadii Odynokin ◽  
...  
Keyword(s):  
Composite Material ◽  
Waste Management ◽  
Boron Oxide ◽  
Basalt Fiber ◽  
Neutron Radiation ◽  
Radiation Shielding ◽  
Fiber Reinforced Concrete ◽  
Experimental Investigations ◽  
Boron Fiber ◽  
Shielding Properties

A new composite material with neutron radiation shielding properties is presented. This fiber reinforced concrete material incorporates basalt-boron fiber, with different concentrations of boron oxide in fiber, and is applicable to nuclear energy and nuclear waste management. The methodology for production of boron oxide (B2O3) infused basalt fiber has been developed. First experimental samples of basalt boron fiber containing 6% of B2O3 and 12% B2O3 have been produced in laboratory conditions. The concrete samples reinforced by two types of basalt-boron fiber with different dosages have been prepared for neutron experiment. The neutron experimental investigations on radiation shielding properties of concrete reinforced by basalt-boron fiber have been performed by means of Pu-Be neutron source. The prepared samples have been tested in the course of several series of tests. It is shown that basalt-boron fibers in concrete improve neutron radiation shielding properties for neutrons with different energies, but it appears to be most effective when it comes to thermal neutrons.

scholarly journals Investigations of Neutron Radiation Shielding Properties for a New Composite Material Based on Heavy Concrete and Basalt Fiber

2018 ◽  
pp. 42-47 ◽  
Author(s):  
I. Romanenko ◽  
M. Holiuk ◽  
A. Nosovsky ◽  
T. Vlasenko ◽  
V. Gulik
Keyword(s):  
Composite Material ◽  
Coarse Aggregate ◽  
Neutron Transport ◽  
Basalt Fiber ◽  
Fission Products ◽  
Physical Modelling ◽  
Neutron Radiation ◽  
Radiation Shielding ◽  
Shielding Properties ◽  
Enriched Uranium

The paper presents a new composite material for radiation shielding properties. This material is based on super-heavy concrete reinforced with basalt fiber, which could be used in biological protection systems for neutron radiation sources. The simulation of the neutron transport in the presented material was performed using the Monte Carlo Serpent code. Two types of heavy concretes were considered in the present paper: 1) with ordinary rubble coarse aggregate and 2) with barite coarse aggregate. For each type of concrete, the basalt fiber with dosage from 1 kg/m3 to 50 kg/m3 was added. The current transmission rates were obtained as a result of the neutron-physical modelling for neutron transport from source to detector through the proposed concrete samples with different thicknesses. The obtained modelling results were analyzed from the viewpoint of effectiveness of the radiation shielding properties. Also, elastic and capture microscopic cross-sections were considered for some isotopes and as a result, some aspects of the radiation shielding properties were clarified. The concrete with ordinary rubble coarse aggregate has better radiation shielding properties in case of low concrete thicknesses due to better neutron scattering on light nucleuses. In contrast to this, the concrete with barite coarse aggregate has better radiation shielding properties in case of high concrete thicknesses due to better neutron absorption. It is shown that the addition of basalt fiber to concrete not only improves its mechanical properties and reduces the number and size of microcracks, but also increases the ability to protect against neutron flux. The proposed composite material could be recommended for use with the following neutron sources: (D, T) neutron generators, plasma focus devices, fusion reactors and fast reactors. This research was carried out with the financial support of the IAEA, within the terms and conditions of the Research Contract 20638 in the framework of the Coordinated Research Project (CRP) “Accelerator Driven Systems (ADS) Applications and use of Low-Enriched Uranium in ADS (T33002)” within the project ‘The Two-Zone Subcritical Systems with Fast and Thermal Neutron Spectra for Transmutation of Minor Actinides and Long-Lived Fission Products’.

Effect of addition of molybdenum on photon and fast neutron radiation shielding properties in ceramics

2019 ◽  
Vol 45 (17) ◽  
pp. 23681-23689 ◽  
Author(s):  
Berna Oto ◽  
Esra Kavaz ◽  
Halil Durak ◽  
Aydın Aras ◽  
Zekiye Madak
Keyword(s):  
Fast Neutron ◽  
Neutron Radiation ◽  
Radiation Shielding ◽  
Shielding Properties

scholarly journals Radiation Shielding Properties Prediction of Barite used as Small Aggregate in Mortar

2020 ◽  
Vol 10 (6) ◽  
pp. 6469-6475
Author(s):  
H. Q. Vu ◽  
V. H. Tran ◽  
P. T. Nguyen ◽  
N. T. H. Le ◽  
M. T. Le
Keyword(s):  
Radiation Resistance ◽  
Construction Materials ◽  
Cost Effective ◽  
Radiation Shielding ◽  
Nuclear Industry ◽  
Barium Compounds ◽  
Long Time ◽  
Radiation Resistant ◽  
Shielding Properties ◽  
Materials Used

Construction materials used in the nuclear industry used to be mainly heavy materials, including lead plates, radiation-resistant heavy concrete, etc. However, these materials are either toxic after a long time of use (lead) or difficult to construct (radiation-resistant heavy concrete) and their cost is rather high. Therefore, there is a need for the manufacturing of a new kind of material with good radiation resistance, which is light, easy to use, and costs less. Barium is less toxic and more cost-effective than lead. Due to the importance of barium compounds in radiation shielding, the study of gamma radiation interactions within these compounds becomes essential, so the most important part of such a study is the experimental one, which shows the effect of the barite powder in the radiation resistance of the mortar. The research results show that the higher the thickness and percentage of barite powder, the higher is the radiation resistance.

scholarly journals Optimizing the shielding properties of strength-enhanced concrete containing marble

2020 ◽  
Vol 12 ◽  
pp. 120005
Author(s):  
Ahmed ABDEL-LATIF ◽  
Maged Kassab ◽  
M. I. Sayyed ◽  
H. O. Tekin
Keyword(s):  
Compressive Strength ◽  
Gamma Ray ◽  
Low Cost ◽  
Effective Atomic Number ◽  
Neutron Radiation ◽  
Mean Free Path ◽  
Strength Properties ◽  
Radiation Shielding ◽  
Removal Cross Section ◽  
Shielding Properties

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 potentiallygood gamma ray and neutron radiation shielding properties.

scholarly journals Experimental investigation on radiation shielding of high performance concrete for nuclear and radiotherapy facilities

2016 ◽  
Vol 22 (2) ◽  
pp. 41-47 ◽  
Author(s):  
Szymon Domański ◽  
Michał A. Gryziński ◽  
Maciej Maciak ◽  
Łukasz Murawski ◽  
Piotr Tulik ◽  
...  
Keyword(s):  
High Performance ◽  
High Performance Concrete ◽  
Absorbed Dose ◽  
Nuclear Research ◽  
Neutron Radiation ◽  
Radiation Shielding ◽  
Transmitted Radiation ◽  
Radiation Fields ◽  
Shielding Properties ◽  
Set Up

Abstract This paper presents the set of procedures developed in Radiation Protection Measurements Laboratory at National Centre for Nuclear Research for evaluation of shielding properties of high performance concrete. The purpose of such procedure is to characterize the material behaviour against gamma and neutron radiation. The range of the densities of the concrete specimens was from 2300 to 3900 kg/m3. The shielding properties against photons were evaluated using 137Cs and 60Co sources. The neutron radiation measurements have been performed by measuring the transmitted radiation from 239PuBe source. Scattered neutron radiation has been evaluated using the shadow cone technique. A set up of ionization chambers was used during all experiments. The gamma dose was measured using C-CO2 ionization chamber. The neutron dose was evaluated with recombination chamber of REM-2 type with appropriate recombination method applied. The method to distinguish gamma and neutron absorbed dose components in mixed radiation fields using twin detector method was presented. Also, recombination microdosimetric method was applied for the obtained results. Procedures to establish consecutive half value layers and tenth value layers (HVL and TVL) for gamma and neutron radiation were presented. Measured HVL and TVL values were linked with concrete density to highlight well known dependence. Also, influence of specific admixtures to concrete on neutron attenuation properties was studied. The results confirmed the feasibility of approach for the radiation shielding investigations.

Neutron radiation shielding properties of polymer incorporated self compacting concrete mixes

2017 ◽  
Vol 125 ◽  
pp. 86-93 ◽  
Author(s):  
Santhosh M. Malkapur ◽  
L. Divakar ◽  
Mattur C. Narasimhan ◽  
Narayana B. Karkera ◽  
P. Goverdhan ◽  
...  
Keyword(s):  
Neutron Radiation ◽  
Radiation Shielding ◽  
Self Compacting Concrete ◽  
Shielding Properties
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