Development of heavyweight high performance fiber reinforced cementitious composites (HPFRCC) – Part II: X-ray and gamma radiation shielding properties

Tüfekçi, M. Mansur; Gökçe, Ahmet

doi:10.1016/j.conbuildmat.2017.12.086

Cited by 45 publications

(14 citation statements)

References 20 publications

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“…The basis of these studies is shielding concrete, manufactured using natural and artificial heavy aggregates [105,106,107]. Other additions to concrete that could improve its shielding properties, including waste materials, such as silica fume, barite powder, magnetite powder, fly ash, or granulated ferrous waste, have also been sought [108,109,110,111]. In this context, interest has grown in the various nanomaterials.…”

Section: Properties Of Cement Composites Containing Nano-fe3o4mentioning

confidence: 99%

Properties of Cement-Based Composites Modified with Magnetite Nanoparticles: A Review

Horszczaruk¹

2019

Materials

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Despite the many available studies on the evaluation of the influence of nanomaterials on the properties of cement-based composites, the effects of some nanoparticles have not yet been fully recognized. Among the unrecognized nanomaterials are magnetite nanoparticles (MN). The literature devoted to this subject is limited. This paper reviews state-of-the-art research carried out on the effect of MN on the properties of cement-based composites. Detailed descriptions of the processing, microstructures (hydration products), properties (hydration, workability, mechanical and functional properties, and durability), and probability applications of MN-engineered cementitious composites are presented. Particular attention has been paid to MN application methods to the cement composite. Finally, the risks, challenges, and future development of MN-modified cement-based composites is discussed.

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Section: Properties Of Cement Composites Containing Nano-fe3o4mentioning

confidence: 99%

Properties of Cement-Based Composites Modified with Magnetite Nanoparticles: A Review

Horszczaruk¹

2019

Materials

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“…On the other hand, Al-Humaiqani et al [45] reported that an increase in compressive strength of high performance heavyweight concrete containing only heavyweight aggregate (barite or hematite) could be improved gamma-ray attenuation coefficients. Moreover, it seems that even if steel fiber usage can increase the mechanical properties [14] and gamma-ray attenuation coefficient of RPC [46], the adverse effect of replacing quartz by barite on the compressive strength, modulus of elasticity, flexural strength, and fracture energy could not be prevented. Thus, barite content of RPC mixture designed for radiation shielding purposes should be optimized for both gamma rays and neutrons by considering the losses in mechanical properties.…”

Section: Transmission Thicknesses Of Gamma Raysmentioning

confidence: 99%

“…Özen et al [13] studied mechanical and shielding properties of high performance heavyweight concrete having low water to cement ratio (0.28) with barite aggregate and various heavyweight aggregates, and noted that increasing density improved the gamma-ray linear attenuation coefficient of the concrete mixtures. Tufekci and Gokce [14] also researched the shielding performance of heavyweight high performance fiber reinforced cementitious composites containing barite and granulated ferrous waste against X-ray and gamma-ray.…”

Section: Introductionmentioning

confidence: 99%

Optimization of reactive powder concrete by means of barite aggregate for both neutrons and gamma rays

Gökçe

Yalçınkaya

Tuyan

2018

Construction and Building Materials

109

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High performance concrete has been often preferred in special engineering structures and in challenging composites products. Researchers have recently focused on the radiation shielding characteristics of these type concrete mixtures due to rising nuclear industry in the developing world. In the study, performance of reactive powder concrete was researched with regard to gamma-ray and neutron attenuation when its normal weight aggregate replaced with heavyweight aggregate (barite). For this purpose, reactive powder concrete mixtures were prepared 100% quartz aggregate, 100% barite aggregate and their blending 50-50%, by volume. Some physical and mechanical characteristics such as density, compressive strength, fracture energy, flexural strength and modulus of elasticity of the mixtures were determined. Gamma-ray attenuation coefficients and transmission thickness values were theoretically established for commonly known gamma energies (661.7, 1173.2 and 1332.5 keV). Optimization of the reactive powder mixtures was performed for both neutron and gamma-ray attenuation at 8 MeV. As a result, barite significantly increased the gamma-ray attenuation coefficients of reactive powder concrete. The mechanical performance of reactive powder concrete, however, was markedly reduced as a result of barite substitution. Replacement of quartz by barite aggregate has a more adverse impact on flexural strength than that of

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“…One common way to increase the density is by adding heavy materials. Accordingly, a few years ago, researchers were interested in enhancing the attenuation performance of concrete by adding heavy aggregates, such as hematite [ 9 ], magnetite [ 10 ], cementitious composites [ 11 ], and barite [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Design and Gamma-Ray Attenuation Features of New Concrete Materials for Low- and Moderate-Photons Energy Protection Applications

et al. 2022

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We aimed, in this investigation, to prepare novel concretes which can be used in gamma-ray shielding applications. The experimental approach was performed using a NaI (Tl) detector to measure the concrete’s shielding features for different energies, ranging from 0.081 MeV to 1.408 MeV. The density of the fabricated concretes decreased with increasing W/C ratio, where the density decreased by 2.680 g/cm3, 2.614 g/cm3, and 2.564 g/cm3 for concretes A, B, and C, respectively, with increases in the W/C ratio of 0.4, 0.6, and 0.8, respectively. When the energy was elevated between 0.08 MeV and 1.408 MeV, the highest values were attained for concrete A, with values ranging between 0.451 cm−1 and 0.179 cm−1. The lowest half-value layer (Δ0.5) values were achieved for concrete C, where the Δ0.5 values varied between 1.53 cm and 3.86 cm between 0.08 MeV and 1.408 MeV. The highest Δ0.5 values were achieved for concrete A, where the Δ0.5 varied between 1.77 cm and 4.67 cm between 0.08 MeV and 1.408 MeV. According to this investigation, concrete A has the highest promise in radiation shielding purposes because it has the most desirable properties of the concretes studied.

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Development of heavyweight high performance fiber reinforced cementitious composites (HPFRCC) – Part II: X-ray and gamma radiation shielding properties

Cited by 45 publications

References 20 publications

Properties of Cement-Based Composites Modified with Magnetite Nanoparticles: A Review

Properties of Cement-Based Composites Modified with Magnetite Nanoparticles: A Review

Optimization of reactive powder concrete by means of barite aggregate for both neutrons and gamma rays

Design and Gamma-Ray Attenuation Features of New Concrete Materials for Low- and Moderate-Photons Energy Protection Applications

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