Neutron Shielding Properties of Concrete and Ferro-Boron

Sarıyer, Demet; Küçer, Rahmi; Küçer, Nermin

doi:10.12693/aphyspola.128.b-201

Cited by 10 publications

(10 citation statements)

References 9 publications

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“…* corresponding author; e-mail: nbozkurt@beu.edu.tr Sarıyer et al [3] investigated neutron shielding properties of concrete and suggested the usability of ferro-boron in concrete in a form of particle alloy. Özavcı and Çe-tin [4] emphasized that with the growing population, the amount of waste also increases.…”

Section: Introductionmentioning

confidence: 99%

Design of Self Compacting Lightweight Concrete Using Acidic Pumice with Different Powder Materials

Bozkurt

Taşkın

2017

Acta Phys. Pol. A

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This paper reports an experimental study on the design of self-compacting lightweight concrete using acidic pumice with different powder materials. For this aim, nine self-compacting lightweight concretes were designed with inclusion of two different fine aggregates and different powder materials. This way, two groups of concrete were designed. First group was composed of single type of aggregate which is acidic pumice from Bitlis Region with barite powder, fly ash powder and pumice powder inclusion, while the second group was generated with river sand as a fine aggregate and acidic pumice from Bitlis Region, as a coarse aggregate with the same powder addition. In the design process, slump-flow, V-funnel and L-box tests were applied to determine the fresh properties of selfcompacting lightweight concrete. After the design, test of compressive strength, which is one of the most important parameters of concrete, was applied to all self-compacting lightweight concretes in early age. Moreover, ultrasound pulse velocity test was also performed on all concrete series at the same ages.

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Section: Introductionmentioning

confidence: 99%

Design of Self Compacting Lightweight Concrete Using Acidic Pumice with Different Powder Materials

Bozkurt

Taşkın

2017

Acta Phys. Pol. A

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“…Based on the simulated results, it shows that the exposure room shielding containing Ferro boron concrete manage to reduce the radiation dose rate by 1150%. It is known that Ferro boron is a great material for radiation shielding especially for neutron radiation due to boron contents [16,20]. With the new exposure room shielding, the NURI facility at RTP can ensure the safety of all the users and the surrounding environment at all times.…”

Section: Discussionmentioning

confidence: 99%

“…In this study, a new design of exposure room shielding for the Neutron Radiography Imaging (NURI) facility at RTP is presented. This new shielding contains Ferro boron as coarse aggregates to enhance its shielding capability [20]. Initial study of using concrete containing Ferro boron had been done before, which lead to determine the ideal thickness and Ferro boron contents for the concrete [16].…”

Section: Figure 1 Top View Of Puspati Triga Mark II Nuclear Research ...mentioning

confidence: 99%

New exposure room shielding incorporated with ferro boron concrete for neutron radiography imaging (NURI) facility at TRIGA PUSPATI Research Reactor

Sarkawi

Zainal

Sazali

et al. 2022

IOP Conf. Ser.: Mater. Sci. Eng.

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Simulation of the new exposure room shielding for Neutron Radiography Imaging (NURI) at 1 MW PUSPATI TRIGA MARK II (RTP) nuclear research reactor in Malaysian Nuclear Agency, Malaysia has been presented in this article. Previous exposure room shielding has to be disassembled due to various reasons such as radiation streaming problem and outdated since the exposure room was constructed in 1985. The NURI facility had been undergoing major upgrading for all their instrument including beam collimator, imaging system, sample positioning, instrumentation shielding, and exposure room shielding. This paper aims to simulate the radiation dose rate mapping for the new exposure room shielding for the NURI facility using the Monte Carlo simulation code of MCNPX. The exposure room shielding design consists of several modular blocks built from ordinary concrete and Ferro boron concrete. Ferro boron concrete is used to enhance the shielding performance of the facility. Results showed that exposure room shielding containing Ferro boron concrete manage to reduce the radiation by 1150 % at the critical area compared to ordinary concrete. The average radiation dose rate around the facility during operation at 1 MW reactor power ranging from 1 μSv/hr - 10 μSv/hr.

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“…The shielding materials could reflect or slow down neutrons, causing them to disintegrate into alpha and beta particles. [ 5–8 ] Despite the fact that lead is the most extensively utilized neutron shielding material, researchers have been working to replace it with bio‐friendly alternatives due to its toxicity and production limitations. [ 9 ]…”

Section: Introductionmentioning

confidence: 99%

Boron carbide reinforced electrospun nanocomposite fiber mats for radiation shielding

et al. 2023

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In this study, 1 wt% boron carbide (B4C) reinforced PVA nanofibers were fabricated by the electrospinning technique as a new generation of ultra‐thin, lightweight, and flexible neutron shielding nanocomposites. The influence of B4C particles' size and morphology on the fiber formation and radiation shielding performance of fiber mats was investigated. The results indicate that the particle characteristics have a dramatic influence on the formation and properties of nanocomposites. The thicknesses of individual fibers reinforced with sol–gel synthesized nano‐sized boron carbide particles were in the range of 50–250 nm, while those containing commercial B4C powder were produced in the thickness range of 1–2 μm. In contrast to the commercial particles, the sol–gel synthesized nano B4C particles enhanced the fiber mat's density and the roundness of individual fibers. Both theoretical and experimental radiation shielding studies showed that B4C reinforcement successfully improved the neutron and gamma attenuation of the neat PVA matrix. Furthermore, it was found that a 6.5 mm thick PVA nanofiber mat, reinforced with only 1 wt% B4C nanoparticles shielded up to about 7.4% of the initial neutron flux. Compared to the neat PVA fiber mat, reinforcement of PVA fibers with 1 wt% sol–gel synthesized nano‐sized boron carbide particles enhanced the neutron shielding by 50.31%. Moreover, even though B4C is not an effective gamma shielding reinforcement, the amplified density of nanocomposite fiber mats also enhanced gamma attenuation.

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Neutron Shielding Properties of Concrete and Ferro-Boron

Cited by 10 publications

References 9 publications

Design of Self Compacting Lightweight Concrete Using Acidic Pumice with Different Powder Materials

Design of Self Compacting Lightweight Concrete Using Acidic Pumice with Different Powder Materials

New exposure room shielding incorporated with ferro boron concrete for neutron radiography imaging (NURI) facility at TRIGA PUSPATI Research Reactor

Boron carbide reinforced electrospun nanocomposite fiber mats for radiation shielding

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