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http://dx.doi.org/10.14190/JRCR.2019.7.4.423

Manufacture and Characteristics of Concrete Sidewalk Blocks Using Photocatalyst Agent  

Jung, Yong-Wook (Department of COMTEC, Keimyung University)
Chang, Chun-Ho (Department of Civil Engineering, Keimyung University)
Kim, Jong-Kyu (Department of Civil Engineering, Kyungnam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.7, no.4, 2019 , pp. 423-430 More about this Journal
Abstract
In this study, the flexural strength, absorption rate, methylene blue photo catalyst decomposition performance and anti-fouling performance were evaluated according to the photo catalyst mixing rate and block surface wash status by applying photo catalyst to the surface layer of concrete sidewalk block. The results showed that the flexural strength of the block that mixed photo catalyst only in the surface layer of the concrete block was 5.32MPa of the general block (SNW) of 5% photo catalyst, compared to 5.46MPa of the non-mixed concrete block of the reference concrete block. Surface washing block (SW) 5.26MPa, 10% photo catalyst general block (SNW) 5.26MPa, and 5.15MPa surface washing block (SW). It has been shown that the presence of surface washing and the mixing rate of photo catalyst in the concrete block have no effect on the flexural strength. Moreover, the photoreaction performance of concrete sidewalk blocks showed that the methylene blue removal rate of specimens with 5% TiO2 was 34.2%, the methylene blue removal rate of specimens with 10% TiO2 was 37.1%, and the removal rate of the methylene blue of specimens with 5% TiO2 was about 37.9% and 10% mixed specimens with TiO2 was about 37.6%.
Keywords
Photocatalyst; Sidewalk block; Nitrogen oxides; Air pollution;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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