RESEARCH OF BUILDING MATERIALS

DEVELOPMENTOF PLASTER COMPOSITIONS THAT HAVE IMPROVED HEAT RESISTANCE

Vestnik MGSU 2/2013
  • Akulova Mariya Vladimirovna - Ivanovo State University of Architecture and Civil Engineering (IGASU) +7 (4932) 32-66-33, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8th of March St., Ivanovo, 153037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Kollerov Anatoliy Nikolaevich - Ivanovo State University of Architecture and Civil Engineering (IGASU) postgraduate student, Department of Production of Building Materials, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8th of March St., Ivanovo, 153037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Potemkina Ol’ga Vladimirovna - Ivanovo State University of Architecture and Civil Engineering (IGASU) doctoral student, Department of Production of Building Materials; +7 (4932) 41-03-04, Ivanovo State University of Architecture and Civil Engineering (IGASU), 20 8th of March St., Ivanovo, 153037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 88-93

Protection of structures and materials from the adverse effects of the environment is a relevant challenge to be tacked both by the teams of researchers and workers on site. A universal method of protection contemplates the use of cladding and paints. There are classes of finishing materials that have special protective properties.Flame-resistant finishes obstruct the burning of structures, and in some cases they can even prevent inflammation. A universal method of protection is the plastering of the surface of a structure. Plastering is applicable to concrete, masonry, metal as well as timber. Development of heat resistant plaster is relevant due to numerous fires in Russia.This article represents an overview of the research into the influence of composite binders and fillers onto the physical and mechanical properties of the heat resistant plaster.Portland cement M 500 was used as a composite binder. Liquid sodium water glass with the density of 1,300 – 1,500 kg/m3 and the silicate modulus value of 2.4 – 2.8 was also applied. Glass sand with the fineness of 0.315 – 1.25, mineral wool fibers that were4 - 6 mm long (with the density of 50 kg/m3) were applied as fillers.Sugar is known as an excellent inhibitor of Portland cement. Liquid glass binders are very effective if added to heat resistant concretes and mortars. This fact was mentioned in the works of K.D. Nekrasov, A.P. Tarasov, G.P. Gorlov, B.D. Toturbiev and others, and it has been proven in practice. It is noteworthy that liquid glass demonstrates high adhesive strength in terms of all materials. Its adhesive strength is 3...5 times higher than that of the cement, and this fact can serve as the basis for the development of highquality heat-resistant solutions.The resulting composition is an excellent heat resistant plaster; its physical-mechanical and thermal properties are not inferior to heat resistant mortars based on imported additives.

DOI: 10.22227/1997-0935.2013.2.88-93

References
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  4. Akulova M.V., Kollerov A.N. Poluchenie zharostoykoy shtukaturki povyshennoy prochnosti [Production of High Strength and Heat Resistant Plaster]. Informatsionnaya sreda vuza [Information Environment of an Institution of Higher Education]. Materialy XVIII Mezhdunar. nauch.-tekhn. konf. [Works of the 18th International Scientific and Technical Conference]. Ivanovo, IGASU Publ., 2011, pp. 202—204.
  5. Dolgikh S.G., Karklit A.K., Kakhmerov A.V. Ogneupory na osnove boksitov dlya vakuumatorov [Bauxite-based Refractory Materials for Vacuum Degassers]. Ogneupory [Refractory Materials]. 1993, no. 2, pp. 31—33.
  6. Tarasova A.P. Zharostoykie vyazhushchie na zhidkom stekle i betony na ikh osnove [Heat Resistant Binders That Contain Liquid Glass and Concretes Produced on Their Basis]. Moscow, Stroyizdat Publ., 1982, 133 p.
  7. Gorlov Yu.P., Merkin A.P., Ziyfman M.I., Toturbiev B.D. Zharostoykie betony na osnove kompozitsiy iz prirodnykh i tekhnogennykh stekol [Heat Resistant Concretes Based on Natural and Man-made Compositions of Glass]. Moscow, Stroyizdat Publ., 1986, 145 p.
  8. Toturbiev B.D. Stroitel’nye materialy na osnove silikat-natrievykh kompozitsiy [Construction Materials Based on Sodium Silicate Compositions]. Moscow, Stroyizdat Publ., 1988, 207 p.
  9. Akulova M.V., Vetoshkin A.A., Emelin V.Yu. Razrabotka sostava penobetona povyshennoy termostoykosti [Development of Foam Concrete That Has Improved Heat Resistance]. Informatsionnaya sreda vuza [Information Environment of an Institution of Higher Education]. Materialy XVIII Mezhdunar. nauch.-tekhn. konf. [Works of the 18th International Scientific and Technical Conference]. Ivanovo, IGASU Publ., 2011, pp. 189—192.
  10. Seregin G.V., Anisimova N.K. Optimizatsiya tekhnologicheskikh protsessov s primeneniem metodov matematicheskogo planirovaniya eksperimentov. Ch. 1. Podbor sostava betona. [Optimization of Process Solutions Using Methods of Mathematical Planning of Experiments. Part I. Selection of the Concrete Composition]. Ivanovo, IGASA Publ., 2005, pp. 8—19.
  11. Tikhomirov I.N., Skorina T.V. Vliyanie silikatnogo modulya zhidkogo stekla na svoystva vyazhushchikh materialov [Effect of the Silicate Module of Liquid Glass Produced on Properties of Binders]. Stroitel’nye materialy [Construction Materials]. 2009, no. 12, pp. 23—25.

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Effect of carbon nanotubes on the properties of pmb and asphalt concrete

Vestnik MGSU 11/2015
  • Shekhovtsova Svetlana Yur’evna - Belgorod State Technological University named after V.G. Shukhov (BSTU) postgraduate student, Department of Automobile and Rail Roads, Belgorod State Technological University named after V.G. Shukhov (BSTU), 46 Kostyukova str., Belgorod, 308012, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Vysotskaya Marina Alekseevna - Belgorod State Technological University named after V.G. Shukhov (BSTU) Candidate of Technical sciences, Associate Professor, Department of Automobile and Rail Roads, Belgorod State Technological University named after V.G. Shukhov (BSTU), ; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 110-119

In the modern world nanotechnologies are an integral part of successful and progressive development of all the areas of activity. Materials science is not an exception. The authors studied the method of nanomodification and its influence on the performance properties of polymer-modified binder (PMB) and asphalt concrete, produced on their basis. It is established that nanomodified PMB are less susceptible to aging, which is a consequence of the processes of peptization of asphalt-resin complexes (ARC) in the structure of the modified binder and the crosslinking with the polymer matrix. It is revealed that nanotubes (SWCN or MWCN) used as a modifier, act as crosslinking agent and the inhibitor of the aging process in a PMB. The influence of nanomodified PMB on strength and deformation properties of asphalt concrete is investigated. It was found out that the use of modified binder in the asphalt concrete mixtures enhances the water resistance of asphalt concrete, heat resistance and shear-resistance.

DOI: 10.22227/1997-0935.2015.11.110-119

References
  1. Vysotskaya M.A., Kuznetsov D.A., Rusina S.Yu., Chevtaeva E.V., Belikov D.A. Tendentsii razvitiya nanomodifikatsii kompozitov na organicheskikh vyazhushchikh v dorozhno-stroitel’noy otrasli [Development Trends of Nanomodifikation of Composites on Organic Binders in Road Construction]. Vestnik Belgorodskogo gosudarstvennogo tekhnicheskogo universiteta im. V.G. Shukhova [Bulletin of BSTU named after V.G. Shukhov]. 2013, no. 6, pp. 17—20. (In Russian)
  2. Bazhenov Yu.M., Korolev E.V. Nanotekhnologiya i nanomodifitsirovanie v stroitel’nom materialovedenii. Zarubezhnyy i otechestvennyy opyt [Nanotechnology and Nanomodification in Building Materials Science. Foreign and Domestic Experience]. Vestnik Belgorodskogo gosudarstvennogo tekhnicheskogo universiteta im. V.G. Shukhova [Bulletin of BSTU named after V.G. Shukhov]. 2007, no. 2, pp. 17—22. (In Russian)
  3. Inozemtsev S.S., Korolev E.V. Ekspluatatsionnye svoystva nanomodifitsirovannykh shchebenochno-mastichnykh asfal’tobetonov [Operational Properties of Nanomodified Stone Mastic Asphalt]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2015, no. 3, pp. 29—39. (In Russian)
  4. Quintero L.S., Sanabria L.E. Analysis of Colombian Bitumen Modified with a Nanocomposite. Journal of Testing and Evaluation (JTE). 2012, vol. 40, no. 7, pp. 93—97. DOI: https://dx.doi.org/10.1520/JTE20120198.
  5. Geim A.K., Novoselov K.S. The Rise of Graphene. Nature Materials. 2007, no. 6, pp. 183—191. DOI: https://dx.doi.org/10.1038/nmat1849.
  6. Stepanishchev N.V. Nanokompozity: problemy napolneniya [Nanocomposites: Problems of Filling]. Plastiks : Industriya pererabotki plastmass [Plastics: Plastics Processing Industry]. 2010, no. 4, pp. 23—27. (In Russian)
  7. Banhart F., Füller T., Redlich P., Ajayan P.M. The Formation, Annealing and Self-Compression of Carbon Onions under Electron Irradiation. Chemical Physics Letters. 1997, vol. 269, no. 3—4, pp. 349—355. DOI: https://dx.doi.org/10.1016/S0009-2614(97)00269-8.
  8. Dolmatov V.Yu. Kompozitsionnye materialy na osnove elastomernykh i polimernykh matrits, napolnennykh nanoalmazami detonatsionnogo sinteza [Composite Materials Based on Elastomer and Polymer Matrices Filled with Nanodiamonds of Detonation Synthesis]. Rossiyskie nanotekhnologii [Russian Nanotechnologies]. 2007, vol. 2, no. 7—8, pp. 19—37. (In Russian)
  9. Prokopets V.S., Galdina V.D. Bitumnye kompozitsii s dobavkoy agregatov nanochastits [Bituminous Compositions with Addition of Aggregates of Nanoparticles]. Stroitel’nye materialy, oborudovanie, tekhnologii XXI veka [Construction Materials, Equipment, Technologies of the 21st Century]. 2012, no. 5 (160), pp. 16—17. (In Russian)
  10. Belin T., Epron F. Characterization Methods of Carbon Nanotubes: a Review. Materials Science and Engineering: B. 2005, vol. 119, no. 2, pp. 105—118. DOI: https://dx.doi.org/10.1016/j.mseb.2005.02.046.
  11. Lobach A.S. Razrabotka kompozitsionnykh nanomaterialov na osnove khimicheski modifitsirovannykh odnostennykh uglerodnykh nanotrubok i vodorastvorimykh polimerov s zadannymi svoystvami [The Development of Composite Nanomaterials on the Basis of Chemically Modified Single-Walled Carbon Nanotubes and Water-Soluble Polymers with the Desired Properties]. Rusnanotech’ 08 : sbornik trudov Mezhdunarodnogo foruma po nanotekhnologiyam (g. Moskva, 3—5 dekabrya 2008 g.) [Proceedings of the International Forum on Nanotechnology “Rusnanotech 08”. (Moscow, December 3—5, 2008)]. Moscow, 2008, vol. 1, pp. 479—481. (In Russian)
  12. Kovalev Ya.N. Aktivatsionno-tekhnologicheskaya mekhanika dorozhnogo asfal’tobetona [Activation-Technological Mechanics of Road Asphalt]. Minsk, Vysheyshaya shkola Publ., 1990, 180 p. (In Russian)
  13. Lukashevich V.N. Sovershenstvovanie tekhnologii asfal’tobetonnykh smesey dlya uvelicheniya sroka sluzhby dorozhnykh pokrytiy [Improving the Technology of Asphalt Mixes to Increase the Service Life of Road Coating]. Stroitel’nye materialy [Construction Materials]. 1999, no. 11, pp. 9—10. (In Russian)
  14. Lysikhina A.I. Primenenie poverkhnostno-aktivnykh i drugikh dobavok pri stroitel’stve asfal’tobetonnykh i podobnykh im dorozhnykh pokrytiy [The Use of Surfactants and Other Additives in the Asphalt and Similar Road Surfaces]. Moscow, Avtotransizdat Publ., 1957, 56 p. (In Russian)
  15. Korolev I.V. Puti ekonomii bituma v dorozhnom stroitel’stve [Ways to Save Bitumen in Road Construction]. Moscow, Transport Publ., 1986, 149 p. (In Russian)
  16. Juyal P., Garcia D.M., Andersen S.I. Effect on Molecular Interactions of Chemical Alteration of Petroleum Asphaltenes. I. Energy and Fuels. 2005, vol. 19, no. 4, pp. 1272—1281. DOI: http://dx.doi.org/10.1021/ef050012b.
  17. Chianelli R.R., Siadati M., Mehta A., Pople J., Ortega L.P., Chiang L.Y. Self-Assembly of Asphaltene Aggregates: Synchrotron, Simulation and Chemical Modeling Techniques Applied to Problems in the Structure and Reactivity of Asphaltenes. Springer Verlag, New York, 2007, pp. 375—400. DOI: http://dx.doi.org/10.1007/0-387-68903-6_15.
  18. Vysotskaya M.A., Rusina S.Yu., Kuznetsov D.A., Yazykina V.V., Spitsyna N.G., Lobach A.S. Patent 2496812 RF, MPK S08L 95/00, C08L 9/06, C08K 3/04, B82B 1/00. Polimerno-bitumnoe vyazhushchee i sposob ego polucheniya [Russian Patent 2496812 RF, MPK S08L 95/00, C08L 9/06, C08K 3/04, B82B 1/00. Polymer-Bitumen Binder and Method for Its Production]. No. 2012133131/05 ; appl. 01.08.2012 ; publ. 27.10.2013, bulletin no. 30. Patent holder FGBOU VPO “Belgorodskiy gosudarstvennyy tekhnologicheskiy universitetim. V.G. Shukhova”, pp. 1—8. (In Russian)
  19. Marina Vysotskaya, Dmitriy Kuznetsov, Svetlana Rusina. Experience and Prospects of Nanomodification Using in Production of Composites Based on Organic Binders. 5th International Conference NANOCON 2013 — Brno, Chech Repablik, EU. October 16th—18th, 2013.
  20. Vysotskaya M., Rusina S. Development of the Nanomodified Filler for Asphalt Concrete Mixes. Journal Applied Mechanic and Materials. 2015, vols. 725—726, pp. 511—516. DOI: http://dx.doi.org/10.4028/www.scientific.net/AMM.725-726.511.
  21. Vysotskaya M.A., Rusina S.Yu. O perspektivakh ispol’zovaniya nanotrubok pri prigotovlenii polimer-bitumnogo vyazhushchego [On the Prospects of Using Nanotubes in the Production of Polymer-Asphalt Binder]. Dorogi i mosty [Roads and Bridges]. 2014, no. 2, pp. 171—187. (In Russian)

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PROSPECTS FOR REINFORCED AUTOCLAVED CELLULAR CONCRETE PRODUCTION TECHNOLOGY

Vestnik MGSU 6/2018 Volume 13
  • Lobodenko Evgeniy Aleksandrovich - «Build Fast Technologies» Deputy Executive Director for Technical Development and Control, «Build Fast Technologies», 32 Gorkogo st., Elektrostal, Moscow region, 144002, Russian Federation.
  • Mikhailova Elena Vladimirovna - «Evonik Industries AG» Technical Support Manager, «Evonik Industries AG», «Evonik Industries AG», bldg. 5, 14 Kozhevnicheskaya st., Moscow, 115114, Russian Federation.
  • Gusev Konstantin Viktorovich - «Polykompozit» Head of Technology and Quality Department, «Polykompozit», 3 Novatorov st., Pskov, 180000, Russian Federation.

Pages 740-747

Subject: the research was carried out in the field of production of reinforced cellular concrete of autoclave hardening (aerated concrete). As initial data, we present joint experimental studies on selection of reinforcing material performed by the enterprises producing aerated concrete (town of Electrostal) and composite reinforcement (city of Pskov). Research objectives: the research task is reduced to selection of the material alternative to metal reinforcement, which will reduce the technological cycle of manufacturing of reinforced cellular concrete products, facilitate the structure’s weight reduction and increase the life cycle of the product. Materials and methods: we consider the use of composite reinforcement made with application of various hardeners (e.g., anhydride and aliphatic amine) that influence the behavior of the composite in a medium of autoclaved cellular concrete (ACC) (alkaline reaction medium, conditions of increased heat resistance). Results: the results of the performed studies showed the existence of the possibility of reinforcing element replacement in the production of autoclaved cellular aerated concrete. Conclusions: on the basis of the tests carried out, it was decided to continue laboratory studies for heat resistance of composite reinforcement with the use of amine hardener in a medium of autoclaved aerated concrete (AAC). It is also noted that this work was carried out for the first time, being valuable in improving the existing production technology of reinforced aerated concrete.

DOI: 10.22227/1997-0935.2018.6.740-747

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Investigation of rational types of light concrete for external walls in conditions of hot climate

Vestnik MGSU 10/2018 Volume 13
  • Hoshim R. Ruziev - Bukhara Engineering Technology Institute , Bukhara Engineering Technology Institute, 15 K. Murtazaev st., Bukhara, 200100, Uzbekistan.

Pages 1211-1219

Introduction. The paper presents theoretical and experimental studies of the improvement of the structure of lightweight concrete, which provides the maximum value of the attenuation of the amplitude of external air temperature fluctuations during the passage of heat flow through the walls and the reduction of thermal conductivity, the results of the 3-factor experiment on determining the rational structure of claydite concrete and the methods for their processing. To determine the purposeful structure of the composition of lightweight concrete and its thermal conductivity, a complex of research works was carried out at the Central Research Institute for Housing, applied to lightweight concrete for exterior walls. The main optimization criterion was the maximum reduction in thermal conductivity while providing the necessary strength, durability and waterproofness. The purpose of this work is theoretical research and experimental substantiation of methods for improving the structure of lightweight concrete used for a hot climate with improved functional performance. Materials and methods. As material a claydite gravel with bulk density p = 400 kg/m3 of Lianozovsky plant (Moscow) was used, at a ratio of 40 % of the fraction 5-10 mm and 60 % of the fraction 10-20 mm and a Portland cement of the brand “400” of the Voskresensky plant, not plasticized. The water flow rate was varied for 10 seconds, to ensure the mixture to be vibropacked.As a foam generating agent and plasticizer, the “Saponified wood resin” (SDO) was used in a 5 % aqueous solution. The methods were adopted in accordance with the Recommendation on the technology of factory production and quality control of lightweight concrete and large-panel constructions of residential buildings. M. CNIIEP dwelling, 1980. In the department of the lightweight concrete application at CNIIEP of dwelling, a method for the purposeful formation of the structure and composition of lightweight concrete, which provides a set of physic-technical, technological and technical-economic requirements, was developed. Results. Calculations are reduced to obtaining mathematical models of dependence of strength R, density ρ, thermai conductivity λ and other indicators of concrete characteristics from initial factors in the form of regression equations. Based on the equations obtained, it was possible to determine the expedient composition of lightweight concrete, which, in combination with the operational characteristics, provides comparable results of the technical and economic characteristics of a single-layer structure from the projected type of lightweight concrete. Conclusions. 1. An improved composition of the structural and heat insulating lightweight concrete for the load-bearing part of the structure, providing its high thermal stability by chemical additives and low consumption of porous sand, was developed. An algorithm for selecting its composition on computer is made. 2. The conducted researches in the field of design of external enclosing structures for hot climate conditions have shown that: single-layer exterior wall constructions with massiveness of D ≤ 4 provide minimum allowable values of heat flux attenuation and temperature fluctuation amplitude on the inner wall surface.

DOI: 10.22227/1997-0935.2018.10.1211-1219

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