Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Effect of Fineness of Cement on the NOx removal Performance of Photocatalytic Cement Paste

시멘트 분말도가 광촉매 시멘트 페이스트의 질소산화물(NOx) 제거 성능에 미치는 영향

  • Received : 2021.07.01
  • Accepted : 2021.08.17
  • Published : 2021.08.30
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Abstract

In this study, we researched a method to increase the photocatalytic reaction efficiency of TiO2 particles while fixing TiO2 to the concrete surface using cement paste. For this purpose, we analyzed effects of cement fineness on the surface area and air purification performance of hardened cement paste containing TiO2. At the test level of this study, it was confirmed that the lower the fineness of OPC shows the better the NO and NOx removal rates, indicating better air purification performance. To identify the cause, the particle size distribution of the cement, the roughness of the surface of the hardened paste, and the lightness were analyzed. The results of the analysis show that the lower the fineness of cement, the surface roughness increases, so the exposed area of TiO2 contained in the paste also increases. As a result, NOx removal rate is improved when the lower the fineness of cement.

Keywords

Acknowledgement

이 연구는 2021년도 한국환경산업기술원의 연구비 지원에 의한 연구개발사업 결과의 일부임. 과제번호:RE202001104

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