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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PREDICTION OF REMAINING SERVICE LIFE OF ASPHALT PAVEMENTS

Vestnik MGSU 3/2018 Volume 13
  • Kirillov Andrey Mikhailovich - Automotive-road college Candidate of Physical and Mathematical Sciences, Lecturer, Automotive-road college, 5 Chekmeneva st., Sochi, 354051, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Zavyalov Mikhail Aleksandrovich - Lomonosov Moscow State University Doctor of Technical Sciences, Associate Professor, Faculty of Global Processes, Lomonosov Moscow State University, 1, bdg 51, Leninskie Gory, Moscow, 119991, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 356-367

Subject: methods for predicting the remaining service life of asphalt pavements based on development of pavement’s functional state model and established threshold values of benchmark parameters for each level of pavement degradation. Research objectives: substantiate the method for predicting the remaining service life of asphalt pavements based on the uniformity of their specific heat values. Materials and methods: the application of the uniformity of the specific heat values of pavement and the index of thermophysical uniformity as criterion parameters, was demonstrated. Results: the use of approximating function describing the evolution of the index of thermophysical uniformity to assess the current condition of pavement and to predict its further deterioration is justified; calculation formulas were obtained to determine the remaining service life of pavements. Conclusions: methods for determining the remaining service life of asphalt pavements are proposed. Knowledge of the remaining service life should facilitate strategic decision-making with regard to required road repair and maintenance, and thereby lead to a more efficient use of existing resources.

DOI: 10.22227/1997-0935.2018.3.356-367

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ENVIRONMENTAL SAFETY OF CONSTRUCTION OF OIL AND GAS FIELD ACCESS ROADS IN WESTERN SIBERIA

Vestnik MGSU 2/2012
  • Chizhikov Il'ja Aleksandrovich - Moscow State University of Civil Engineering (MSUCE) postgraduate student, Department of Urban Planning and Ecological Safety, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Shcherbina Elena Vital'evna - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Head of Department of Urban Planning and Ecological Safety, Moscow State University of Civil Engineering (MSUCE), 26 Jaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 145 - 151

The paper presents the results of the field study of the subsidence following the implementation of one of the road building methods. The field study was performed in the area alongside oil and gas field access roads built in the loose marshy ground (peat). The paper provides a description of the geosynthetics installation technology. Outdated road building technologies designated for weak road base conditions feature high consumption of materials and energy and substantial anthropogenic impact on the environment. These technologies comprise complete or partial replacement of the ground by sand, road metal, or macrofragmental material combined with timber as the reinforcing element of the base (a plank road). The objective of the field study was to develop an ecologically safe technology capable of reducing the anthropogenic impact on the environment and improving the strength and the operating safety of the road structure. The field study has proven that the aforementioned objective may be attained through the application of geosynthetic materials designated for the improvement of the bearing capacity of the weak road base. Geosynthetic materials and structures of the road subgrade ensure high speed of construction, high quality and reliability of the road structure, reduction in the consumption of materials and energy to assure the ecological safety of construction of oil and gas field access roads. Earlier, the author used the qualimetry method to assess the ecological safety. This method is used to assess the ecological safety in points. The assessments have proven that the reinforced base technology is preferable to the method of complete or partial replacement of the ground. Projection of the subsistence development pattern that makes it possible to evaluate the safety and the serviceability of the proposed solution is also an important efficiency factor. The field study involved a section of the oil and gas field access road outstretched along the oil transportation route that connected three Salym oil fields in Western Siberia.

DOI: 10.22227/1997-0935.2012.2.145 - 151

References
  1. Shcherbina E.V. Geosinteticheskie materialy v stroitel'stve [Geosynthetics in Construction], Moscow, ASV, 2004, 111 p.
  2. Chizhikov I.A. Jekologo-jekonomicheskaja jeffektivnost' ustrojstva promyslovyh dorog Zapadnoj Sibiri s ispol'zovaniem geosinteticheskih materialov [Ecological and Economic Efficiency of Site Access Roads Installation in Western Siberia using Geosynthetic Materials]. Jekologija urbaniziro-vannyh territorij [Ecology of urban areas] International Scientific and Technical Conference, Moscow, Prima-Press-M, 2006, pp. 197—200.
  3. Chizhikov I.A., Shcherbina E.V. Ispol'zovanie mnogofaktornogo analiza dlja ocenki jekologicheskoj bezopasnosti stroitel'stva neftegazopromyslovyh dorog [Use of the Multi-factor Analysis for the Environmental Safety Assessment of construction of Oil-and-Gas Production Roads]. Jekologija urbanizirovannyh territorij, 2010, Issue # 3, pp. 96—100.
  4. BCN (Branch Construction Norms) 26—90 Instrukcija po primeneniju i stroitel'stvu avtomobil'nyh dorog neftjanyh i gazovyh promyslov Zapadnoj Sibiri [Instructions for Oil-and-gas Field Access Roads Use and Construction in Western Siberia], Moscow, Mintransstroi, 1990, pp. 54—56.

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