Investigation of Radiation Shielding Properties for Some Soil Samples for Use in Shields against Gamma-Rays from Different Nuclides

Ethylene Propylene Diene Monomer (EPDM) composites filled with 0–400 phr [Formula: see text] (PWO) were prepared by conventional process using a two-roll mill. Surface treatment of the fillers coated with KH570 was conducted to enhance the wettability and lubrication of fillers in the polymer matrix. According to SEM images and mechanical test, both micro- and submicro-fillers disperse homogeneously in the matrix, and adhesion of submicro-fillers to the matrix is stronger than that of micro-fillers. The submicro-PWO composites had better tensile strength and elongation at break than those composites containing micro-PWO powder, but a relatively higher hardness. The photon shielding test was performed to determine the radiation shielding properties of these composites, which showed that attenuation of gamma-rays for the submicro-PWO composites was substantially enhanced compared to micro-PWO reinforced composites.

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Radiation shielding properties of poly (methyl methacrylate) / colemanite composite for the use in mixed irradiation fields of neutrons and gamma rays

Materials Chemistry and Physics ◽

10.1016/j.matchemphys.2018.09.014 ◽

2019 ◽

Vol 221 ◽

pp. 58-67 ◽

Cited By ~ 21

Author(s):

Tayfun Bel ◽

Cuneyt Arslan ◽

Nilgun Baydogan

Keyword(s):

Methyl Methacrylate ◽

Gamma Rays ◽

Radiation Shielding ◽

Poly Methyl Methacrylate ◽

Shielding Properties

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Physical-radiation shielding properties of concrete contains colemanite and ulexite

Indoor and Built Environment ◽

10.1177/1420326x20967974 ◽

2020 ◽

pp. 1420326X2096797

Author(s):

Nazım Uçar ◽

Adnan Çalık ◽

Muhammet Emre ◽

Iskender Akkurt

Keyword(s):

Elastic Modulus ◽

Flexural Strength ◽

Gamma Rays ◽

Construction Material ◽

Radiation Shielding ◽

Ordinary Concrete ◽

Important Phenomenon ◽

Shielding Properties

Radiation is an important phenomenon as it is used in a variety of different fields. However, its possible hazardous effect should be taken into account and it should be shielded. As the concrete is a widely used construction material, the mechanical and radiation shielding properties of concretes containing boron-bearing aggregate additives have been studied. The results show that the addition of colemanite or ulexite into concrete has significant effects on density, workability, compressive and flexural strength, elastic modulus and radiation shielding. The results also show that concrete containing colemanite or ulexite is no more effective in the attenuation of gamma rays than ordinary concrete.

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BaSO4/Polyvinyl Alcohol Composites for Radiation Shielding

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.804.3 ◽

2015 ◽

Vol 804 ◽

pp. 3-6 ◽

Cited By ~ 8

Author(s):

Voranuch Thongpool ◽

Akapong Phunpueok ◽

Naris Barnthip ◽

Sarawut Jaiyen

Keyword(s):

Polyvinyl Alcohol ◽

Optical Density ◽

Gamma Rays ◽

Gamma Ray ◽

Radioactive Source ◽

Radiation Shielding ◽

Specimen Thickness ◽

Attenuation Coefficients ◽

X Ray ◽

Shielding Properties

The gamma ray and X-ray shielding properties of PVA containing different proportions of BaSO4 as an aggregate have been investigated. The photon linear attenuation coefficients were measured by using 241Am radioactive source (59.54 keV). Gamma rays were counted by a NaI(Tl) detector. It was found that the shielding efficiency increased when increasing the amount of BaSO4 and specimen thickness. The linear attenuation coefficients were 0.085, 0.125, 0.179, and 0.189 for 0.2, 0.4, 0.6, and 0.8%w/v of BaSO4. The X-ray attenuation test was performed using the diagnostic X-ray machine for energy of 45 kVp. The optical density of X-ray films was investigated. The results showed that the optical density of X-ray film decreased when increasing the amounts of BaSO4.

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