A research on the radiation shielding effects of clay, silica fume and cement samples

Akbulut, Suat; Sehhatigdiri, Arvin; Eroğlu, Hayrettin; Çelik, Semet

doi:10.1016/j.radphyschem.2015.08.003

Cited by 40 publications

(15 citation statements)

References 6 publications

(10 reference statements)

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“…In their study, Demron is found to exhibit better attenuation than EarthSafe and Xenolite. Akbulut et al (2015) have studied the radiation shielding property of clay-white cement, clay-silica fume, gypsum, gypsum-silica fume, cement, white cement, cement-silica fume, white cement-gypsum, white cementsilica fume, red mud-silica fume, silica fume and red mud samples against gamma rays. In their study, clay-white cement mixture was found to be superior to other studied samples.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterization and X-ray attenuation property of Gd2O3-based nanocomposites

2017

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In an attempt to develop an alternate to leadbased X-ray shielding material, we describe the X-ray attenuation property of nanocomposites containing Gd 2 O 3 as nanofiller and silicone resin as matrix, prepared by a simple solution-casting technique. Gd 2 O 3 nanoparticles of size 30 and 56 nm are used at concentrations of 25 and 2.5 wt%. The nanoparticles and the nanocomposites are characterized using X-ray diffraction (XRD) studies, small angle X-ray spectroscopy (SAXS), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and atomic force microscopy (AFM). The X-ray attenuation property of nanocomposites, studied using an industrial X-ray unit, shows that nanocomposites containing nanoparticles of size 56 nm (G2) exhibit better attenuation than nanocomposites containing nanoparticles of size 30 nm (G1), which is attributed to the greater interfacial interaction between the G2 nanofillers and silicone matrix. In the case of nanocomposites containing G1 nanoparticles, the interfacial interaction between the nanofiller and the matrix is so weak that it results in pulling out of nanofillers, causing voids in the matrix, which act as X-ray transparent region, thereby reducing the overall X-ray attenuation property of G1 nanocomposites. This is further corroborated from the AFM images of the nanocomposites. The weight loss and heat flow curves of pure silicone matrix and the nanocomposites containing Gd 2 O 3 nanoparticles of size 30 and 56 nm show the degradation of silicone resin, due to chain scission, between 403 and 622°C. The same onset temperature (403°C) of degradation of matrix with and without nanoparticles shows that the addition of nanofillers to the matrix does not deteriorate the thermal stability of the matrix. This confirms the thermal stability of nanocomposites. Therefore, our study shows that nanocomposites containing G2 nanoparticles are potential candidates for the development of X-ray opaque fabric material.

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Section: Introductionmentioning

confidence: 99%

Preparation, characterization and X-ray attenuation property of Gd2O3-based nanocomposites

2017

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“…X, α, β and γ rays, which are known as ionizing radiation can become important threats for living organisms. These rays may cause biological, chemical and physical changes in living organisms [3]. Exposure to gamma rays can occur because of nuclear applications, such as reactors, nuclear research and medical diagnostic centers, and nuclear waste storage sites.…”

Section: Introductionmentioning

confidence: 99%

“…The usage areas of radiation, are mainly the medical and the industrial fields. Most of them have the potential for both, beneficial and harmful effects [3,5].…”

Section: Introductionmentioning

confidence: 99%

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Production of Barite and Boroncarbide Doped Radiation Shielding Polymer Composite Panels

Evcin

Bezir

et al. 2017

Acta Phys. Pol. A

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Developments in nuclear technology in the last century have lead to the use of radiation in different areas of human activity. These are not just the energetics but also food, agriculture, medicine, industry and science. Thus, radiation has become an inevitable phenomenon in our lives. Since we cannot isolate radiation from our life, the radiation protection methods should be available. As alternatives to conventional radiation prevention methods, such as lead and heavy concrete shielding, more functional materials need to become the focus of research. The development of the least harmful to the environment, easily applicable, flexible radiation shields has become very important. In this study, silicon matrix composite panels, doped with different ratios of barite and boron carbide, were produced and characterized by optical and scanning electron microscopy (SEM). Gamma and neutron radiation shielding properties of these materials were investigated. The results have been compared with the lead as the standard shielding material.

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“…So that it is necessary to study different parameters related to the passage of gamma radiation through a building materials such as half value layer and linear attenuation coefficient to know the effectiveness of building materials so as to shield gamma radiation. Different workers have been calculated the attenuation coefficients in different categories such as (3) in Lead and pure tungsten, tungsten carbide-cobalt (WC_Co) Materials against Gamma Irradiation, (4) used Aluminum, Iron, Copper and Lead, (5) in building block, concrete, iron and lead, (6) design and construction of light and heavy weight concrete biological shields from ionizing radiation, (7) in heavy concrete, (8) in Cement material, (9) in clay, silica fume and cement samples, (10) used clay-flyash bricks, (11) in boron doped clay for 662, 1173 and 1332 keV gamma rays, (12) in glass, concrete, marble, fly ash, cement and lime, (13) used solid waste containing lead was analyzed as shielding material for gamma radiation, (14) in concrete mixed with different percentages of lead is used to study gamma-ray shielding properties, (15) used a combination of materials contains aluminum, iron, copper and lead as shielding for gamma radiation, (16) used Portland cement mixed with different percentages of granulated lead for gamma ray shielding.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Efficiency and Performances of Building Materials used in Sudan Combined with Lead as the Gamma Ray Shieldings

Ali¹,

Eisa²,

Beineen³

2019

IJTSRD

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In this study the linear attenuation coefficient (µ) and the half value layer (HVL) of some building materials like iron, concrete, cement and clay used in Sudan as a combined with the lead have been investigated, the results have been experimentally determined using Cs-137 and Co-60 source and compared with the theoretical values. The measurements were performed for radiation intensity without shielding and with specific thickness of selected samples using ion chamber placed at 2 meters from Cs-137 and Co-60. An obtained results showed that the linear attenuation coefficient (µ) has a linear relationship with the corresponding densities of the samples studied and inversely with photon energy, and the half value layer (HVL) was proportional directly with photon energy. As a results of this evaluation the lead combined with the selected materials as indicated above showed an improvement the efficiency of building materials as the gamma ray shielding.

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A research on the radiation shielding effects of clay, silica fume and cement samples

Cited by 40 publications

References 6 publications

Preparation, characterization and X-ray attenuation property of Gd2O3-based nanocomposites

Preparation, characterization and X-ray attenuation property of Gd2O3-based nanocomposites

Production of Barite and Boroncarbide Doped Radiation Shielding Polymer Composite Panels

Evaluation of Efficiency and Performances of Building Materials used in Sudan Combined with Lead as the Gamma Ray Shieldings

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