Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Effect of Replacing Fine Aggregate by Cathode-Ray Tube(CRT) Waste Glass on Gamma-ray Shielding Properties of Cement Mortar Specimen

폐 브라운관(CRT) 유리의 잔골재 대체가 모르타르 시험체의 감마선 차폐에 미치는 영향

  • 최윤석 (한국건설생활환경시험연구원 건설기술연구센터) ;
  • 이선민 (한국건설생활환경시험연구원 융합기술센터) ;
  • 김태상 (한국건설생활환경시험연구원 건설기술연구센터) ;
  • 김일순 (강릉원주대학교 토목공학과) ;
  • 양은익 (강릉원주대학교 토목공학과)
  • Received : 2019.11.28
  • Accepted : 2019.12.04
  • Published : 2019.12.01
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Abstract

In this study, the microstructure and gamma-ray shielding efficiency of CRT glass mortar specimen were evaluated with replacement ratio and material properties. The results show that as the replacement ratio of CRT waste glass increases, the volume of pores with diameters below 50 nm and above 400 nm is increased. Also, the half-value layer of CRT glass mortar decreased with the increasing of linear attenuation coefficient. In addition, compressive and flexural strength were reduced when CRT waste glass was replaced as the fine aggregate, but the mechanical performance of CRT mortar specimen could be obtained by substitution of the mineral admixture.

이 연구에서는 CRT 폐유리의 잔골재 대체율과 재료 물성(조성)을 달리한 모르타르의 미세구조와 감마선 차폐 효율을 평가하였다. 실험 결과에 따르면 CRT 폐유리의 잔골재 대체율이 증가할수록 50nm 크기 이하와 400nm 크기 이상의 공극 볼륨이 증가하였으며, 선헝감쇠계수는 상승하고 반가층은 작아지는 결과를 나타냈다. 또한, CRT 폐유리의 대체했을 때 강도는 감소하였으나 혼화재를 치환하여 OPC 이상의 강도값을 확보할 수 있었다.

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References

  1. Akkurt, I., Akyildirim, H., Mavi, B., Kilincarslan, S., Basyigit, C. (2010), Gamma-ray shielding properties of concrete including barite at different energies, Progress in Nuclear Energy, 52, 620-623. https://doi.org/10.1016/j.pnucene.2010.04.006
  2. ASTM D 4284. (2012), Standard Test Method for Determining Pore Volume Distribution of Catalysts by Mercury Intrusion Porosimetry, ASTM International, West Conshohocken, PA.
  3. Choi, Y.S., Yang, E.I. (2013), Effect of calcium leaching on the pore structure, strength, and chloride penetration resistance in concrete specimens, Nuclear Engineering and Design, 259, 126-136. https://doi.org/10.1016/j.nucengdes.2013.02.049
  4. Choi, S.Y., Choi, Y.S., Yang, E.I. (2017), Effects of heavy weight waste glass recycled as fine aggregate on the mechanical properties of mortar specimens, Annals of Nuclear Energy, 99, 372-382. https://doi.org/10.1016/j.anucene.2016.09.035
  5. Choi, S.Y., Choi, Y.S., Yang, E.I. (2018), Characteristics of volume change and heavy metal leaching in mortar specimens recycled heavyweight waste glass as fine aggregate, Construction and Building Materials, 165, 424-433. https://doi.org/10.1016/j.conbuildmat.2018.01.050
  6. Choi, Y.S., Kim, I.S., Choi, S.Y., Yang, E.I. (2019), Fundamental Properties and Radioactivity Shielding Characteristics of Mortar Specimen Utilizing CRT Waste Glass as Fine Aggregate, Journal of the Korea Institute for Structural Maintenance and Inspection, 23(1), 163-170 [in Korean]. https://doi.org/10.11112/JKSMI.2019.23.1.163
  7. Choi, S.Y., Kim, I.S., Choi, Y.S., Yang, E.I. (2019), A Study on the Applicability of Heavyweight Waste Glass and Steel Slag as Aggregate in Heavyweight Concrete, Journal of the Korea Institute for Structural Maintenance and Inspection, 23(2), 107-115 [in Korean].
  8. Gallala, W., Hayouni, Y., Gaied, M.E., Fusco, M., Alsaied, J., Bailey, K., Bourham, M. (2016), Mechanical and radiation shielding properties of mortars with additive fine aggregate mine waste. Annals of Nuclear Energy, 101, 600-606. https://doi.org/10.1016/j.anucene.2016.11.022
  9. Gusukuma, M., Kahhat, R. (2018), Electronic waste after a digital TV transition: Material flows and stocks, Resources,Conservation & Recycling, 138, 142-150. https://doi.org/10.1016/j.resconrec.2018.07.014
  10. KS L ISO 679. (2016), Methods of testing cements-Determination of strength, Korean Agency for Technology and Standards.
  11. Kim, B.C., Cha, T.G., Jang, P.K., Jang, I.Y. (2015), An Experimental Study on High Strength Concrete Using the LCD Waste Glass Powder. Journal of the Korean Recycled Construction Resources Institute, 3(4), 335-341 [in Korean]. https://doi.org/10.14190/JRCR.2015.3.4.335
  12. Kim, I.S., Choi, S.Y., Yang, E.I. (2018), Evaluation of durability of concrete substituted heavyweight waste glass as fine aggregate, Construction and Building Materials, 184, 269-277. https://doi.org/10.1016/j.conbuildmat.2018.06.221
  13. Kim, I.S., Choi, Y.S., Choi, S.Y., Yang, E.I. (2019), Evaluation of durability and radiation shielding property of heavyweight filling material for application in radioactive disposal facilities, Annals of Nuclear Energy, 133, 750-761. https://doi.org/10.1016/j.anucene.2019.07.026
  14. Lee, J.S., Yoo, H.M., Yang, W.S., Park, J.K., Cho, S.J., Kim, B.S., Seo, Y.C. (2013), A Study on Clay Brick manufacturing with Powders of CRT Glass Waste, Journal of Korea Society of Waste Management, 30(1), 86-93 [in Korean]. https://doi.org/10.9786/kswm.2013.30.1.86
  15. Mueller, J., Boehm, M., Drummond, C. (2012), Direction of CRT waste glass processing: Electronics recycling industry communication, Waste Management, 32, 1560-1565. https://doi.org/10.1016/j.wasman.2012.03.004
  16. Maslehuddin, M., Naqvi, A.A., Ibrahim, M., Kalakada, Z. (2013), Radiation shielding properties of concrete with electric arc furnace slag aggregates and steel shots, Annals of Nuclear Energy, 53, 192-196. https://doi.org/10.1016/j.anucene.2012.09.006
  17. Oh, J.H., Mun, Y.B., Lee, J.H., Choi, H.K., Choi, S.S. (2016), Aggregate Effects on ${\gamma}$-tay Shielding Characteristic and Compressive Strength of Concrete, Journal of Nuclear Fuel Cycle and Waste Technology, 14(4), 357-365 [in Korean]. https://doi.org/10.7733/jnfcwt.2016.14.4.357
  18. Yang, E.I., Choi, Y.S. (2011), Characteristics of Pore Structures and Compressive Strength in Calcium Leached Concrete Specimens, Journal of the Korea Concrete Institute, 23(5), 647-656 [in Korean]. https://doi.org/10.4334/JKCI.2011.23.5.647