Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Optimum Details of Thermal-Meta Structures for Enhancing the Insulation Capacity of Concrete Panels

콘크리트 패널의 단열 성능 향상을 위한 열메타 구조체의 최적 상세 제시

  • Sim, Ji-Hye (Dept. of Architectural Engineering, Kyonggi University) ;
  • Kim, Jong-Won (Dept. of Architectural Engineering, Kyonggi University) ;
  • Yang, Geun-Hyeok (Dept. of Architectural Engineering, Kyonggi University)
  • Received : 2021.07.28
  • Accepted : 2022.05.10
  • Published : 2022.05.30
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Abstract

This study examined the flexural strength and thermal transfer resistance of thermal-meta structures developed for enhancing the insulation capacity of concrete walls and panels. The thermal-meta structure consisted of a paper honeycomb, laminated to be waterproof and incombustible with infilling materials. Lateral deformation of thermal-meta structures was analyzed from the finite element analysis under the simulation of concrete lateral pressure calculated for walls to determine the thickness, size, and height of the honeycomb cells. The effect of different infilling materials, such as air, EPS bead, urethane foam, paraffin, mixture of paraffin and aerogel, on the thermal transfer resistance of thermal-meta structures was also examined from thermal conductivity tests conducted in accordance with KS F 9016. Considering the structural safety against concrete lateral pressure and better thermal resistance, the details of a thermal-meta structure indicated the thickness, size, and height of the honeycomb cells was 4.5 mm, 50 mm, and 70 mm, respectively. The laminate thickness attached on both sides of the honeycomb was 0.8 mm; and no infilling materials were required for the honeycomb cells to form the closed-pore system.

Keywords

Acknowledgement

이 연구는 국토교통부와 국토교통과학기술진흥원의 지원을 받아 수행한 국토교통기술사업화지원사업(22TBIP-C161724-02)이며, 2022학년도 경기대학교 대학원 연구원장학생 장학금 지원에 의하여 수행되었음.

References

  1. Bae, S. Y., Jeon, S. Y., Huh, P. H., & Jo, N. J. (2021). Heat radiating material with paraffin microencapsule and alumina, Journal of Polymer(Korea), 45(5), 673-679.
  2. Cha, J. H., Kang, S. G., Seo, K. B., Lee, H. W., & Choi, W. J. (2019). Temperature-responsive thermal meta materials based on modular design of switchable unit cells, Journal of the Korean Society of Mechanical Engineers, 63-63.
  3. Dassault Systemes (DS) Simulia Corp. (2016). ABAQUS/CAE (version 2016) [Computer software]. https://www.3ds.com/ko/products-services/simulia/products/a baqus/
  4. Ha, J. Y., Shin, H. G., & Song, T. H. (2019). Development of organic-inorganic hybrid insulating materials with semi-non-combustible using by recycling gypsum, Journal of the Korean Recycled Construction Resources Institute, 7(4), 431-437. https://doi.org/10.14190/JRCR.2019.7.4.431
  5. Hong, S. H., Kim, S. J., Yoon, H. W., Choi, H. K., & Kim, M. H. (2018). Nano particle-based meta-materials and application technology, Journal of the Korean Institute of Surface Engineering, 20.
  6. Jang, Y. H. (2018). Reinforcement of building insulation standards to 'Passive Building Level' from september this year, The Architectural Culture News, Retrieved August 28, 2020 from http://www.ancnews.kr/news/articleView.html?idxno=5454
  7. Ji, G. B., Mun, J. H., & Yang, K. H. (2019). Evaluation of mechanical properties of lightweight concrete using bottom ash aggregates and foam, Journal of the Korea Concrete Institute, 31(4), 375-384. https://doi.org/10.4334/jkci.2019.31.4.375
  8. KCI (2022). Korea Standard Specification, Korea Concrete Institute.
  9. Kim, Y. T. (2019). Properties of quasi-noncombustible ultra-lightweight geopolymer, Journal of the Korean Crystal Growth and Crystal Technolgy, 29(3), 132-139.
  10. Korea Agency for Technology and Standards (KATS) (2018). Extrusion lightweight concrete panels (KS F 4736). Seoul, Korea: Korea Standard Association (KSA). (In Korean)
  11. Korea Agency for Technology and Standards (KATS) (2017). Test methods for thermal transmission properties of thermal insulations (KS L 9016). Seoul, Korea: Korea Standard Association (KSA). (In Korean)
  12. Kyeong, D. H., Lee, H. M., & Choi, W. J. (2020). Optimization of temperature responsive thermal meta materials through engineering an interfacial thermal conductivity, Journal of the Korean Society of Mechanical Engineers, 392-396.
  13. Lee, H. J. (2015). Experimental study of the relationship weight variation and thermal conductivity in polyurethane foam, Journal of Air-Conditioning and Refrigeration Engineering, 27(5), 241-246. https://doi.org/10.6110/KJACR.2015.27.5.241
  14. Lee, J. C., Kim, D. H., Chung, K. R., & Seo, C. H. (2003). An experimental study on the properties of lightweight concrete contained expanded polystyrene beads, Journal of the Architectural Institute of Korea, 19(7), 111-118.
  15. Lee, K. I., Mun, J. H., & Yang, K. H. (2019). A fundamental study to develop low-CO high-insulation lightweight concrete using bottom ash aggregates and air foam, Journal of the Korea Concrete Institute, 31(3), 221-228. https://doi.org/10.4334/jkci.2019.31.3.221
  16. Park, Y. S., Kang, M. G., Kim, J. H., Ji, S. W., & Jeon, H. K. (2016). The thermal conduction property of structural concrete using insulation performance improvement materials, Journal of the Korea Institute of Building Construction, 16(1), 9-15. https://doi.org/10.5345/JKIBC.2016.16.1.009
  17. Seo, K. B., Kang, S. G., Kim, S. J., Lee, H. W., & Choi, W. J. (2018). Temperature-responsive thermal meta materials for active controls of local thermal energy distribution, Journal of the Korean Society of Mechanical Engineers, 131-132.
  18. Yoo, C. J., Kim, M. C., & Go, S. S. (2019). A study on thermal insulation performance of vacuum insulation panel using dry processing glass fiber core, Journal of the Architectural Institute of Korea, 35(6), 121-128.
  19. Yoon, J. K., Lim, Y. W., & Kim, D. C. (2018). Analysis for anisotropic thermal properties of meta material based on finite element method, Journal of the Korean Society of Mechanical Engineers, 215-216.