한국지반신소재학회논문집 (Journal of the Korean Geosynthetics Society)

  • 제22권4호
  • /
  • Pages.51-61
  • /
  • 2023
  • /
  • 2508-2876(pISSN)
  • /
  • 2287-9528(eISSN)
한국지반신소재학회 (Korean Geosynthetics Society)
권호 표지
DOI QR코드

DOI QR Code

다공성 나노실리카 입자(MSNs)와 PVA섬유를 혼입한 모르타르의 내화성능에 관한 연구

A Study on the Fire Resistance Performance of Mortars Using Mesoporous Silica Nanoparticles(MSNs) and PVA Fibers

  • 투고 : 2023.11.28
  • 심사 : 2023.12.18
  • 발행 : 2023.12.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구는 건축·건설물에서의 화재 시 구조물의 내화성능을 향상 시키기 위하여 시멘트 모르타르에 다공성 나노실리카(MSNs)에 ZnO입자가 결합된 형태의 분말과 PVA 섬유를 혼입한 공시체를 20~1100℃의 온도 영역에 노출 시켜 잔존압축강도 및 중량변화율을 측정하여 내화성능의 변화 여부를 알아보았다. 연구 결과, 시멘트 모르타르의 내화성능 향상에 나노실리카와 PVA 섬유를 같이 혼입한 경우 내화성능 향상에 기여는 없는 것으로 나타났다. 반면, 각각 나노실리카를 0.5% 혼입하는 경우와 PVA 섬유를 0.1vol% 혼입하는 경우 가장 양호한 내화성능 향상 실험결과를 나타내어 내화에 유리한 것으로 나타났다.

In this study, in order to improve the fire resistance performance of structures in case of fire in buildings and structures, PVA fibers and the ZnO particles combined with mesoporous nano silica (MSNs) were mixed with cement mortar, and the specimen was exposed to a temperature range of 20~1100℃. Then the residual compressive strength and weight change rate were measured to determine whether the fire resistance performance changed. As a result of the study, it was found that mixing mesoporous nano silica and PVA fiber together did not contribute to improving the fire resistance performance of cement mortar. On the other hand, mixing 0.5% of mesoporous nano silica and 0.1 vol% of PVA fiber showed the best improvement test results, showing that it was advantageous for fire resistance performance.

키워드

참고문헌

  1. Ashesh, P., Jung, H. K., Kim, M. J., Kim, S. W., Kim, Y. J. and Park, C. W. (2017), "Flexural Toughness Properties of High Performance Slurry Infiltrated Fiber Reinforced Concrete (HPF-RCC) Externally Strengthen with Carbon Fiber Reinforced Polymer (CFRP)", J. of the Korea concrete Institute, Vol.29, No.1, pp.777-778.
  2. Bilodeau, A., Kodur, V. K. R. and Hoff, G. C. (2004), "Optimization of the Ttype and Amount of Polypropylene Fibres for Preventing the Spalling of Lightweight Concrete Subjected to Hydrocarbon Fire", Cement and Concrete Composites, Vol.26, No.2, pp.163-174. https://doi.org/10.1016/S0958-9465(03)00085-4
  3. Cha, S. W., Lee, G. W. and Choi, Y. C. (2022), "Hydration and Mechanical Properties of High-volume Fly Ash Concrete with Nano-silica", J. of the Korea Institute for Structural Maintenance and Inspection, Vol.26, No.9, pp.112-119.
  4. Han, C. G., Jee, S. W., Kim, K. M., Heo, Y. S. and Kim, S. H. (2006), "Investigation of Fire Resistance Performance of High Performance Concrete Containing PP & PVA Fiber", J. of Architectural Institute of Korea, Vol.22, No.10, pp.77-84.
  5. Jeon, K., Sim, S. R. and Lee, Y. D. (2023), "Evaluation of Fire Resistance Performance of Polymer Modified Cement Mortar Using Polypropylene Fiber", J. of the Korea Institute of Building Construction, Vol.23, No.2, pp.133-142.
  6. Jo, B. W., Park, J. B. and Park, J. H. (2005), "A Study on Fire-Resistant Performance of Concrete Using Nano-Silica Particles", J. of the Korea Concrete Institute, Vol. 17, No. 2, pp. 247-254. https://doi.org/10.4334/JKCI.2005.17.2.247
  7. Kim, G., Hwang, Y., Lee, J., Lee S., Lee, B. and Han, C. (2004), A Study on the Properties of Fire Endurance of High Performance RC Column with Kinds and Contents of Fiber, J. of the Architectural Institute of Korea, Vol.24, No.2, pp.523-526.
  8. Vaz-Ramos, J., Santiago, A. and Portugal, A. (2019), "Synthesis of silica nanoparticles to enhance the fire resistance of cement mortars", Fire Research, Vol.3, No.1, pp.44-48. https://doi.org/10.4081/fire.2019.77
  9. Won, J. P., Ja ng, C. I., Lee, S. W., Kim, H. Y. a nd Kim, W. Y. (2008), "Fire Resistance Performance for Hybrid Fiber Reinforced High Strength Concrete Column Member", J. of the Korea Concrete Institute, Vol.20, No.6, pp.827-832. https://doi.org/10.4334/JKCI.2008.20.6.827
  10. Song, H. (2015), "Properties of Fire Resistant Finishing Mortar Using Fly Ash and Glass Forming Light Weight Aggregate", J. of the Korean Recycled Construction Resources Institute, Vol.3, No.4, pp.374-381. https://doi.org/10.14190/JRCR.2015.3.4.374
  11. Park, J. Y., Kim, S. I., Kim, S. H., Lee, J. Y. and Chung, C. W. (2021), Investigation on Fire Resistance of Mortar Made of Powder Type Sericite, J. of the Korean Recycled Construction Resources Institute, Vol.9, No.1, pp.26-32.
  12. Yang, S. W. and Kim, H. D. (2015), "A study on the fire resistance characteristics of mud flat mortar", J. of the Korea Society of Disaster Information, Vol.11, No.4, pp.589-596. https://doi.org/10.15683/kosdi.2015.11.4.589
  13. KS F 2257-1, Korean Standards and Certification, Methods of fire resistance test for elements of building construction-general requStatistics Koreairements.
  14. KS L 5105, Korean Standards & Certification, Test method for compressive strength of hydraulic cement mortars.
  15. KS L ISO 679, ISO, Cement-Test methods-Determination of strength.
  16. Statistics Korea (2022), Korean Statistical Information Service(KOSIS).