RESEARCH OF BUILDING MATERIALS

Photocatalyticpaving concrete

Vestnik MGSU 2/2014
  • Lyapidevskaya Ol'ga Borisovna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Building Materials, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Fraynt Mikhail Aleksandrovich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Building Materials, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 125-130

Today bituminous concrete is a conventional paving material. Among its advantages one can name dustlessness and noiselessness, fine wear (up to 1 mm a year) and fine maintainability. As the main disadvantages of this material one can name high slipperiness under humidification, low durability and weather resistance. Besides that, during placement of the bituminous concrete a lot of different air pollutants are emitted, which are harmful for environment and human’s health (they are listed in the paper according to the US Environmental Protection Agency materials). As an alternative, one can use cement-concrete pavement, which is in many ways more efficient than the bituminous concrete. It is proposed to enhance environmental performance of the cement-concrete pavement via usage of photocatalysis. The mechanism of different photocatalytic reactions is described in the paper, namely heterogeneous and homogeneous photocatalysis, photo-induces, photoactivated catalysis and catalytical photoreactions. It is pro-posed to use heterogeneous photocatalysis with titanium dioxide as a photocatalyst. The mechanism of photo oxidation of air contaminants, with the usage of titanium dioxide is2described. The paper sets problems, connected with the sensibilization of TiOto thevisible light (it is proposed to use titanium dioxide, doped with the atoms of certain elements to increase its sensibility to the visible light) and with the development of a new photocatalytic paving concrete, which will meet the requirements, specified for paving in the climatic and traffic conditions of the Russian Federation.

DOI: 10.22227/1997-0935.2014.2.125-130

References
  1. Tran Tuan My, Korovyakov V.F. Samouplotnyayushchiesya betonnye smesi dlya dorozhnogo stroitel'stva [Self-compacting Concrete Mixtures for Road Building]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 3, pp.131—137.
  2. Hunger M., H?sken G., Brouwers H.J.H. Photocatalysis Applied to Concrete Products — Part 1: Principles and Test Procedure. ZKG International. 2008, vol. 61, no. 8, pp. 77—85.
  3. Mueses M.A., Machuca-Martinez F., Puma G.L. Effective Quantum Yield and Reaction Rate Model for Evaluation of Photocatalytic Degradation of Water Contaminants in Heterogeneous Pilot-scale Solar Photoreactors. Chemical Engineering Journal. 2013, vol. 215—216, pp. 937—947. DOI: 10.1016/j.cej.2012.11.076.
  4. Remont asfal'tobetonnykh pokrytiy avtomobil'nykh dorog: obzornaya informatsiya. Federal'noe dorozhnoe agentstvo Ministerstva transporta Rossiyskoy Federatsii [Review: Maintenance of the Bituminous Concrete Pavements of Motorways. Federal Highway Agency of the Ministry of Transport of the Russian Federation]. 2004.
  5. Malato S., Fern?ndez-Ib??ez P., Maldonado M.I., Blanco J., Gernjak W. Decontamination and Disinfection of Water by Solar Photocatalysis: Recent Overview and Trends. Catalysis Today. 2009, vol. 147, no. 1, pp. 1—59. DOI: 10.1016/j.cattod.2009.06.018.
  6. Li D., Haneda H., Labhsetwar N.K., Hishita S., Ohashi N. Visible-light-driven Photocatalysis on Fluorine-doped TiO2 Powders by the Creation of Surface Oxygen Vacancies. Chemical Physics Letters. 2005, vol. 401, no. 4—6, pp. 579—584. DOI:10.1016/j.cplett.2004.11.126.
  7. Zaynullina V.M., Zhukov V.P., Krasil'nikov V.N., Yanchenko M.Yu., Buldakova L.Yu., Polyakov E.V. Elektronnaya struktura, opticheskie i fotokataliticheskie svoystva anataza, dopirovannogo vanadiem i uglerodom [Electronic structure, optical and photocatalytical properties of anatase, doped with vanadium and carbon]. Fizika tverdogo tela [Solid State Physics]. 2010, vol. 52, no. 2, pp. 253—261.
  8. Osborn D., Hassan M., Asadi S., White J. Durability Quantification for a TiO2 Photocatalytic Concrete and Asphalt Pavements. Transportation Research Board 92nd Annual Meeting. 2013, no. 13-0901.
  9. Chen T.T., Chang I.C., Yang M.H., Chiu H.T., Lee C.Y. The Exceptional Photo-catalytic Activity of ZnO/RGO Composite via Metal and Oxygen Vacancies. Applied Catalysis B: Environmental. 2013, October—November, vol. 142—143, pp. 442—449. DOI: 10.1016/j.apcatb.2013.05.059.
  10. Shintre S.N., Thakur P.R. Environmental Applications of Nanocrystalline TiO2 in Combination with H2O2. International Journal of Green Nanotechnology. 2012, vol. 4, no. 4, pp. 430—439. DOI: 10.1080/19430892.2012.739479.

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HIGH-QUALITY ORNAMENTAL FINE CONCRETES MODIFIED BY NANOPARTICLES OF TITANIUM DIOXIDE

Vestnik MGSU 6/2012
  • Bazhenov Yuriy Mikhaylovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Head of the Department of Technologies of Cohesive Materials and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, 129337, Russian Federation.
  • Korolev Evgeniy Valer'evich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Lukuttsova Natal'ya Petrovna - Bryansk State Academy of Engineering and Technology (BSAET) Doctor of Technical Sciences, Professor +7 (4832) 74-60-08, +7 (4832) 74-05-13, Bryansk State Academy of Engineering and Technology (BSAET), 3 pr. St.-Dimitrova, Bryansk, 241037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zavalishin Sergey Iosifovich - Moscow State University of Civil Engineering (MSUCE) Candidate of Technical Sciences, Professor, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Chudakova Ol'ga Andreevna - Bryansk State Academy of Engineering and Technology (BSAET) postgraduate student, +7 (4832) 74-60-08, +7 (4832) 59-56-39, Bryansk State Academy of Engineering and Technology (BSAET), 3 pr. St.-Dimitrova, Bryansk, 241037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 73 - 78

Ultrasonic method of generation of a stable suspension of nano-particles of titanium dioxide and the strengthening properties of the ornamental fine concrete that contains cement binders with a nano-dispersed additive constitute the subject of the research covered by the authors. Nanoparticles react with the basic chemical elements that compose the concrete and act as crystallization centres. Therefore, the concrete porosity is reduced, while physical and technology-related properties of the ornamental fine concrete are improved.
The authors have proven that the application of the nano-dispersed additive that contains titanium dioxide influences the processes of the structure formation in respect of fine ornamental concretes and improves the strength, as well as the water and cold resistance of fine concretes. The improvement is attributed to the dense concrete structure and strong adhesion between cement grains and between the cement and the aggregate. This conclusion is based on the data obtained through the employment of an electronic microscope used to identify the porosity of fine concretes.

DOI: 10.22227/1997-0935.2012.6.73 - 78

References
  1. Drinberg A.S., Kalinskaya T.V., Itsko E.F. Neorganicheskie pigmenty, proizvodstvo i perspektivy [Inorganic Pigments, Production and Prospects]. Lakokrasochnye materialy i ikh primenenie [Paint-and-Lacquer Materials and Application]. 2007, no. 12, pp. 20—28.
  2. Latyshev Yu.V., Lenev L.M. Tseny na TiO2 — stabil’ny!? Chego mogut zhdat’ potrebiteli etogo syr’ya? [Prices for TiO2: are They Stable!? What Can Consumers Expect of This Material?] Lakokrasochnye materialy i ikh primenenie [Paint-and-Lacquer Materials and Application]. 2007, no. 12, pp. 12—19.
  3. Lukuttsova N.P., Chudakova O.A., Khotchenkov P.V. Dekorativno-otdelochnye izdeliya na osnove nanomodifitsiruyushchey dobavki [Ornamental Finishing Products That Contain Nano-Modifiers]. Vestnik BGTU im. V.G. Shukhova [Proceedings of Voronezh State University of Technology]. 2011, pp. 67—72.

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