Investigation of radiation absorption coefficients of lead-zinc mine waste rock mixed heavy concrete at 662–1460 keV energy range

Çullu, Mustafa; Bakırhan, Emir

doi:10.1016/j.conbuildmat.2018.03.175

Cited by 26 publications

(9 citation statements)

References 23 publications

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“…An investigation was conducted by Mustafa Çullu et al [ 15 ] at Gumushane University in Turkey. In their study, concrete specimens were prepared by altering different amounts of heavy aggregates.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Gamma Radiation Transmission Rate of Heavyweight Concrete Containing Barite Aggregates

2022

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The primary objective of this research was to study the transmission of gamma radiation from heavyweight concrete containing barite aggregates. For this purpose, cylindrical and cubic specimens were produced for 10 mix designs. The mix designs containing different percentages of barite aggregates were calculated; five mix designs were also calculated for the compressive strength of 25 MPa, while five of them were designed for the compressive strength of 35 MPa to study the influence of the compressive strength rate on the reduction in gamma radiation transmission. The results indicated that both compressive and tensile strength was decreased by increasing the ratio of barite aggregates. The rate in reduction of compressive strength and especially tensile strength in concrete C35 was less than in concrete C25. The use of barite aggregates increased the attenuation coefficient of concrete. The attenuation coefficient in C35 concrete increased more than that in C25 upon increasing the amount of barite aggregate. By increasing the thickness of concrete with different percentages of barite, the rate of radiation loss in different samples was closer. The difference in the rate of radiation loss at a thickness of 150 mm was not much different from that at a thickness of 100 mm, whereas it was considerably decreased at a thickness of 300 mm. The test results indicated that the reduction in the gamma transmission rate is significantly dependent on the density of concrete.

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Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Gamma Radiation Transmission Rate of Heavyweight Concrete Containing Barite Aggregates

2022

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“…Horszczaruk et al [ 18 ] found that the application of heavyweight magnetite aggregates can reduce the negative impacts of high temperature on the mechanical characteristics of radiation shielding concrete. Çullu and Bakırhan [ 28 ] observed that the strength grade of concrete affects the coefficient of radiation absorption in heavyweight lead–zinc concretes. Saidani et al [ 29 ] and González-Ortega et al [ 30 ] reported that the application of barite powder and barite aggregates in heavyweight concrete for the purpose of radiation shielding in nuclear facilities and hospitals results in reduced concrete mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Han

et al. 2022

Materials

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Nuclear technology benefits humans, but it also produces nuclear radiation that harms human health and the environment. Based on the modified Andreasen and Andersen particle packing model for achieving a densely compacted cementitious matrix, a new magnetite ultra-high-performance concrete (MUHPC) was designed using magnetite fine aggregate as a substitute for river sands with 0%, 20%, 40%, 60%, 80%, and 100% replacement ratios. The comprehensive properties of the developed MUHPC were tested and evaluated. These properties were fluidity, static and dynamic compressive strengths, high-temperature performance, antiradiation behaviors, hydration products, and micropore structures. Experimental results indicate that the developed MUHPC has high work performance and static and dynamic mechanical properties. The gamma ray shielding performance of MUHPC substantially improves with increased magnetite fine aggregate. Corresponding with 100% magnetite fine aggregate substitution, the linear attenuation coefficient of MUHPC is enhanced by 56.8% compared with that of ordinary concrete. Magnetite addition does not change the type of cement hydration products but improves the micropore structures of MUHPC and effectively reduces its total porosity and average pore diameter, thereby contributing to its mechanical and radiation shielding properties. The compressive strength and linear attenuation coefficient of the MUHPC can reach 150 MPa and 0.2 cm−1, respectively. In addition, the MUHPC also exhibits superior mechanical and radiation shielding performance at elevated temperatures (<400 °C). Finally, high strength and antiradiation performance support the use of MUHPC in radiation protection materials in the future.

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“…The results showed that adding nanoparticles to heavyweight concrete improved protective properties, with potential applications in civil engineering constructions and potential use as building materials for nuclear facilities [13]. Çullu and Bakirhan [14] investigated lead-zinc mine waste rock and heavyweight concrete in the energy range of 662-1460 keV. The results showed that concrete strength affects radiation absorption [14].…”

Section: Introductionmentioning

confidence: 99%

“…Çullu and Bakirhan [14] investigated lead-zinc mine waste rock and heavyweight concrete in the energy range of 662-1460 keV. The results showed that concrete strength affects radiation absorption [14]. Baalamurugan et al [15] studied the utilization of steel slag from smelting furnaces in concrete as aggregates for protection against gamma rays.…”

Section: Introductionmentioning

confidence: 99%

Effect of Serpentine Aggregates on the Shielding, Mechanical, and Durability Properties of Heavyweight Concrete

Sayyadi

Mohammadi

Adlparvar

2022

IJE

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Concrete is a material that can easily absorb nuclear radiation, and in this process, the density of concrete is an essential factor in absorbing the rays. Therefore, due to performance limitations and thickness, heavyweight concrete is used. In this study, serpentine coarse aggregates (SCAg) and serpentine fine aggregates (SFAg) were used as a substitute for sand and gravel in heavyweight concrete containing lead slag to protect against gamma rays. Determination of mechanical properties (compressive strength, tensile strength, and ultrasonic pulse velocity), physical properties (water absorption and electrical resistivity), and shielding properties (shielding against gamma rays) were among the main objectives. The results indicated the positive effect of SFAg and SCAg on the shielding properties of concretes against gamma rays. The replacement of SFAg and SCAg with natural aggregates increased the density of the samples, which resulted in an increase in 3.8 to 42.9% in the linear attenuation coefficient against gamma rays. SFAg has a significant effect on gamma-ray attenuation, especially when these materials are made of high-density minerals, due to their property of reducing the pores in concrete.

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Investigation of radiation absorption coefficients of lead-zinc mine waste rock mixed heavy concrete at 662–1460 keV energy range

Cited by 26 publications

References 23 publications

Mechanical Properties and Gamma Radiation Transmission Rate of Heavyweight Concrete Containing Barite Aggregates

Mechanical Properties and Gamma Radiation Transmission Rate of Heavyweight Concrete Containing Barite Aggregates

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Effect of Serpentine Aggregates on the Shielding, Mechanical, and Durability Properties of Heavyweight Concrete

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Investigation of radiation absorption coefficients of lead-zinc mine waste rock mixed heavy concrete at 662–1460 keV energy range

Cited by 26 publications

References 23 publications

Mechanical Properties and Gamma Radiation Transmission Rate of Heavyweight Concrete Containing Barite Aggregates

Mechanical Properties and Gamma Radiation Transmission Rate of Heavyweight Concrete Containing Barite Aggregates

Preparation and Comprehensive Properties of a High-Radiation-Shielding UHPC by Using Magnetite Fine Aggregate

Effect of Serpentine Aggregates on the Shielding, Mechanical, and Durability Properties of Heavyweight Concrete

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Investigation of radiation absorption coefficients of lead-zinc mine waste rock mixed heavy concrete at 662–1460 keV energy range