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http://dx.doi.org/10.14190/JRCR.2020.8.4.506

NOx Reduction Performance in Cement Mortar with TiO2 Treatment and Mineral Admixture  

Yoon, Yong-Sik (Department of Civil and Environmental Engineering, Hannam University)
Kim, Hyeok-Jung (Industry Academic Cooperation Foundation, Hankyong National University)
Park, Jang-Hyun (Korea Institute of Future Convergence Technology, Hankyong National University)
Kwon, Seung-Jun (Department of Civil and Environmental Engineering, Hannam University)
Publication Information
Journal of the Korean Recycled Construction Resources Institute / v.8, no.4, 2020 , pp. 506-513 More about this Journal
Abstract
In this study, the mechanical properties, absorption, and reduction performance of NOx in the mortar containing mineral admixture like zeolite and active hwangtoh were evaluated. Zeolite and active hwangtoh were used as binder, and zeolite and active hwangtoh were substituted for cement. The substitution ratio of two types of mineral admixtures was considered as 20 and 30% respectively. As a result of evaluating the compressive strength and flexural strength of each mortar specimen, the highest strength in the plain mixture was evaluated. As the substitution ratio of zeolite and active hwangtoh increased, the compressive and flexural strength decreased. In addition, the difference of compressive and flexural strength between active hwangtoh and zeolite mixing was evaluated to be insignificant. To evaluate the absorption rate, the mixture was designed to lower the W/B ratio of the existing mixture and set the substitution ratio of active hwangtoh and zeolite at 25%. The highest absorption ratio in the mortar with zeolite was evaluated, and the difference in absorption ratio between the remaining two mortar mixtures was small. The assessment of reduction performance of NOx considering the application of photocatalyst showed a clearly decreasing reduction behavior, even if they were the same mortar mixture. Zeolite and active hwangtoh also showed a higher NOx reduction than the Plain mixture, because of their porosity properties. In the case of active hwangtoh, the absorption ratio was lower than that of zeolite mixture, but the reduction of NOx performance was better than the result of zeolite mixture.
Keywords
Zeolite; Active hwangtoh; Absorption rate; Photocatalyst; NOx;
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1 Benoit-Marquie, F., Wilkenhoner, U., Simon, V. (2000). VOC photodegradation at the gas-solid interface of a TiO2 photocatalyst, Photochemistry and Photobiology, 132(3), 225-232.   DOI
2 Bentz, D.P., Eheln, M.A., Ferraris, C.F., Winpigler, J.A. (2002). Service Life Prediction Based on Sorptivity for Highway Concrete Exposed to Sulfate Attack and Freeze-Thaw Conditions, National Institute of Standard and Technology, McLean, USA.
3 Cabrera, C., Gabaldon, C., Marzel, P. (2005). Technical note sorption characteristics of heavy metal ions by a natural zeolite, Journal of Chemical Technology and Biotechnology, 80, 477-481.   DOI
4 Cho, B.W., Choi, J.S. (2012). An experimental study on the fundemental properties of zeolite concrete, Journal of the Korea Institute for Structural Maintanence and Inspection, 16(1), 1-8 [in Korean].
5 Choi, H.Y., Hwang, H.Z., Kim, M.H., Kim, M.H. (2000). A study on the development of hwangtoh admixture for the application of cement mortar, Journal of the Architectural Institute of Korea - Structure & Construction, 16(6), 95-102 [in Korean].
6 Choi, H.Y., Kim, M.H., Kim, M.H., Hwang, H.Z., Choi, S.W. (2001). Experimental study on the properties of concrete by the kinds of admixture and the replacement ratios of activated hwangtoh, Journal of the Korea Concrete Institute, 13(2), 123-129 [in Korean].   DOI
7 Choi, J.J. (1998). A study on the properties of concrete using zeolite, Journal of the Korea Concrete Institute, 10(5), 205-216 [in Korean].
8 Colelia, C. (1996). Ion exchange equilibria in zeolite minerals, Mineralium Deposita, 31, 554-562.   DOI
9 Eedem, E., Karapinar, N., Donat, R. (2004). The removal of heavy metal cations by natural zeolites, Journal of Colloid and Interface Science, 280, 309-314.   DOI
10 Colin, A.F., Jeremy, L.B., Lau, Y.L. (2001). Solid-state NMR detection, characterization, and quantification of the multiple aluminum environments in US-Y catalysts by 27Al MAS and MQMAS experiments at very high fied, Journal of the American Chemical Society, 123, 5285-5291.   DOI
11 Frias, M., De Rojas, M.S., Cabrera, J. (2000). The effect that the pozzolanic reaction of metakaolin has on the heat evolution in metakaolin-cement mortars, Cement and Concrete Research, 30(2), 209-216.   DOI
12 Go, S.S., Lee, H.C., Lee, J.Y., Kim, J.K., Chung, C.W. (2009). Experimental investigation of mortars using activated Hwangtoh, Construction and Building Materials, 23(3), 1438-1445.   DOI
13 Kim, H.J., Yoon, Y.S., Yang, K.H., Kwon, S.J. (2019). Durability and purification performance of concrete impregnated with silicate and sprayed with photocatalytic TiO2, Construction and Building Materials, 199, 106-114.   DOI
14 Sano, T., Negishi, N., Takeuchi, K., Matsuzawa, S. (2004). Degradation of toluene and acetaldehyde with Pt-loaded TiO2 catalyst and parabolic trough concentrator, Association for Applied Solar Energy, 77(5), 543-552.
15 Kwon, S.J., Wang, X.Y. (2019). Optimization of the mixture design of Low-CO2 high-strength concrete containing silica fume, Advances in Civil Engineering, 8(3), 1-9.   DOI
16 Kwon, S.O., Bae, S.H., Lee, H.J., Jung, S.H. (2014). Characteristics for reinforcement corrosion and chloride ion diffusion of high volume fly ash concrete, Journal of the Ko rean Recycled Construction Resources Institute, 2(1), 34-39 [in Korean].
17 Metha, P.K., Monteiro, P.M. (2009). Concrete-Structure, Properties, and Materials, 2nd Edition, Prentice Hall, New-Jersey, 113-178.
18 Park, K.C., Lim, N.G. (2015). Chloride penetration of concrete mixed with high volume fly ash and blast furnace slag, Journal of the Korea Institute for Structural Maintenance and Inspection, 19(1), 90-99 [in Korean].   DOI
19 Pi, U.H. (2005). Study of Behavior of Strength and Clean of Air Condition Using Photocatalyst(TiO2) for Concrete, Master's Thesis, Gyeongbuk National University [in Korean].
20 Yamaguchi, S. (2004), Decomposition of gaseous volatile organic chloride compounds, Journal of Environmental Hi-Technology, 12(2), 32-38.
21 Yang, H.M., Lee, H.S., Yang, K.H., Ismail, M.A., Kwon, S.J. (2018). Time and cold joint effect on chloride diffusion in concrete containing GGBFS under various loading conditions, Construction and Building Materials, 167, 739-748.   DOI
22 Yoon, Y.S., Kwon, S.J. (2019). Evaluation of apparent chloride diffusion coefficient and surface chloride contents of FA concrete exposed splash zone considering crack width, Journal of the Korean Recycled Construction Resources Institute, 23(6), 18-28 [in Korean].