KSCE Journal of Civil and Environmental Engineering Research (대한토목학회논문집)

Korean Society of Civil Engeneers (대한토목학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental Study on the Long-term Performance of TiO2 Concrete for Road Structures

도로 구조물 적용을 위한 TiO2 콘크리트의 장기공용성에 대한 실험적 연구

  • 이준희 (강릉원주대학교 토목공학과) ;
  • 김영규 (강릉원주대학교 방재연구소) ;
  • 이승우 (강릉원주대학교 토목공학과)
  • Received : 2015.01.20
  • Accepted : 2015.03.20
  • Published : 2015.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In the area of high traffic volume, such as expressway across large cities, the amount of nitrogen oxides (NOx) emitted into the atmosphere as air pollution can be significant since NOx gases are the major cause of smog and acid rain. Recently, the importance of NOx removal has arisen in the world. Titanium dioxide ($TiO_2$), that is one of photocatalytic reaction material, is very efficient for removing NOx. Therefore, application of $TiO_2$ concrete is a good alternative in order to remove NOx which is a main cause of air pollution. This experimental study aimed to evaluate the long-term performance of $TiO_2$ concrete such as NOx removal efficiency due to performance period and environmental resistance for application of road structures. It was found that the $TiO_2$ is reasonable applicable on the road structure because $TiO_2$ concrete has a long-term performance.

대도시와 인접한 고속도로와 같이 교통량이 많은 경우 스모그와 산성비의 주요 원인이 되는 많은 양의 질소산화물이 발생하여 대기오염이 심각한 상황이다. 이에 최근 들어 전 세계적으로 질소산화물 제거의 중요성이 부각되고 있다. $TiO_2$는 광촉매 소재의 하나로써 질소산화물 제거에 매우 효과적이므로 대기오염의 주요 원인인 질소산화물을 제거하기 위하여 $TiO_2$ 콘크리트를 도로 구조물에 적용하는 방안이 있다. 이에 본 실험적 연구에서는 $TiO_2$ 콘크리트의 현장 적용을 위하여 공용에 따른 질소산화물 제거 효율변화와 함께 환경 하중 저항성을 평가하였다. 이로 인해 $TiO_2$ 콘크리트의 장기적인 기능성 유지가 확인되었으며, 인접 도로 구조물에 적용이 타당할 것으로 판단된다.

Keywords

References

  1. Hong, S. J. and Lee, S. W. (2013). "An experimental study for the construction of photocatalytic method concrete road structure." Korean Society of Road Engineers, Vol. 15, No. 6, pp. 1-9.
  2. ISO 22197-1 (2007). Test method for air-purification performance of semiconducting photocatalytic materials-Part 1: Removal of Nitric Oxide, International Standard.
  3. Kim, H. J. (2000). "Development of materials to remove nitrogen compounds (NOx) of cement." Conference of Cement Association, 153, pp. 50-54.
  4. Kim, Y. K. and Lee, S. W. (2014). "Evaluation of NOx removal efficiency of photocatalytic concrete for road structure." Korean Society of Road Engineers, Vol. 16, No. 5, pp. 49-58.
  5. Ballari, M. M., Hunger, M., Husken, G. and Brouwers, H. J. H. (2010). "NOx photocatalytic degradation employing concrete pavement containing titanium dioxide." Applied Catalysis B: Environmental, Vol. 95, No. 3-4, pp. 245-254. https://doi.org/10.1016/j.apcatb.2010.01.002
  6. Ministry of Environment (2011). National Air Pollutants Emission 2011, National Institute of Environmental Research, Ministry of Environment (in Korean).
  7. The guardian (2011). Iran, India, Pakistan and Mongolia have most polluted cities in the world, Available at: http://www.theguardian. com/environment/2011/sep/26/iran-india-pakistan-mongolia-pol luted-cities (Accessed: December 12, 2014).