Evaluation of durability and radiation shielding property of heavyweight filling material for application in radioactive disposal facilities

Kim, Il Sun; Choi, Yoon Suk; Choi, So Yeong; Yang, Eun Ik

doi:10.1016/j.anucene.2019.07.026

Cited by 6 publications

(3 citation statements)

References 30 publications

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“…It is easy to damage the interface, so the compressive strength of the mortar was reduced. The compressive strength of the B80 specimen was higher than that of the B60 specimen because more waste glass sand was mixed in, which made more waste glass sand with fine glass particles and a cement hydration reaction to produce more gel [ 16 ]. Thus, the compressive strength of the B80 specimen was higher than that of the B60.…”

Section: Resultsmentioning

confidence: 99%

“…The results showed that adding waste glass powder to ordinary cement mortars could significantly affect their thermophysical properties [ 14 , 15 ]. Some studies found that mortars containing waste glass can be a viable filler material in radioactive waste disposal facilities [ 16 ]. Zhang [ 17 ] proposed a new research method to mix waste glass material into alkali-excited cement-based slurry or mortar.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Waste Glass as Fine Aggregate on Properties of Mortar

et al. 2022

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Currently, most cities landfill most waste glass, resulting in the waste of resources and environmental pollution. Therefore, to realize the recycling of waste glass, solid waste glass was recycled and broken. Waste glass sand was prepared according to the gradation of natural river sand particles and the fineness modulus screening. It was used as an alternative material to natural river sand and mixed with mortar materials with different replacements. Analysis of the mortar with different replacements (0%, 20%, 40%, 60%, 80%) was conducted by combining macro and micro tests on the change law and influence mechanism of permeability, mechanical properties, and microstructure. The results showed that: the replacement of waste glass sand effectively improved the gas permeation resistance of mortar; with the increase of replacement, the gas permeation resistance of mortar roughly showed a trend of increasing first and then decreasing. The replacement of waste glass sand at 20% can better promote cement’s hydration so that the mortar’s porosity is reduced by 16.5%. The gas permeability decreases by 57.4%; the compressive strength increases by 3%, and the elastic modulus increases by 5.9%. When the replacement rate of glass sand is 20%, the test performance of mortar is the best among the five groups.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Waste Glass as Fine Aggregate on Properties of Mortar

et al. 2022

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“…Many researchers are working on various admixtures to improve the performance of concrete. Fly ash and blast furnace slag are widely known admixture materials to replace cement [1][2][3], and some researchers used industrial wastes such as waste glass and steel slag to replace aggregates [4][5][6]. Recently, studies on materials that can improve the performance of cement composites by using small amounts are being conducted [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Internal Pores Formed by a Superabsorbent Polymer on Durability and Drying Shrinkage of Concrete Specimens

Kim

Choi

et al. 2021

Materials

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In this study, the effect of internal pores formed by a superabsorbent polymer (SAP) was analyzed by evaluating the compressive strength, chloride penetration depth, drying shrinkage, and pore size distribution of SAP-containing concrete, while securing workability using a water-reducing agent (WRA). The experimental results showed that the amount of WRA necessary increased as the amount of SAP added increased, and that the compressive strength was the highest when the SAP content was 1.5% of the concrete mix. Drying shrinkage tended to decrease as the SAP content increased, and it decreased by approximately 31–41% when the SAP content was 2.0% compared to that of the reference mix. The SAP expanded by approximately three times inside concrete, and it was distributed within the internal pores of air-entrained concrete. The optimal SAP content in concrete mix was 1.5%, and an SAP content of 2.0% or higher adversely affected the workability and compressive strength.

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