RESEARCH OF BUILDING MATERIALS

METHODOLOGY OF ENVIRONMENTAL ASSESSMENT OF BUILDING MATERIALS

Vestnik MGSU 2/2013
  • Ustinova Yuliya Valer’evna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associate Professor, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), 6 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Nasonova Alla Evgenievna - Moscow State University of Civil Engineering (MGSU) +7 (499) 183-32-92, Moscow State University of Civil Engineering (MGSU), 6 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 123-129

The article covers the importance of environmental assessments of building materials. Magnesium binding materials were selected as the subject of the environmental analysis. The water resistance of these materials is regarded as one of environmental criteria. Thus, the purpose of this paper is an assessment of the life cycle of additives proposed to improve the water resistance of magnesium binding materials. Redispersible polymer powder based on the copolymer of vinyl acetate and vinilversatata, polyvinyl acetate dispersion, sodium carboxymethyl cellulose, oxalic acid, chrysotile asbestos, modified using concentrated sulfuric acid and micro-silica were selected for research purposes.The following findings have been generated in the course of the research:1. Correlation between the environmental assessment of the application of modifiers with the strength test results of caustic magnesite samples in dry and saturated states is identified.2. Organic additives classified as producing an unsatisfactory environmental impact do not significantly affect the water resistance of the caustic magnesite sample.3. Oxalic acid, chrysotile asbestos modified using sulfuric acid and micro-silica are acceptable for magnesium binding materials in terms of their environmental analysis.4. Micro-silica is the additive that demonstrates the best properties both in terms of its environmental analysis and in terms of improving the water resistance of magnesium binding materials.5. Environmental analysis of the life cycle of modifiers can be recommended as an important stage in the planning of experiments aimed at improvement of properties of building materials.

DOI: 10.22227/1997-0935.2013.2.123-129

References
  1. Kohler N. Grundlagen zur Bewertung kreislaufgerechter, nachhaltiger Baustoffe, Bauteile und Bauwerke 20. Aachener Baustofftag. March 3, 1998.
  2. Knyazeva V. P. Ekologicheskie aspekty vybora materialov v arkhitekturnom proektirovanii [Environmental Aspects of Selection of Materials in the Architectural Design]. Moscow, Arkhitektura-S Publ., 2006, 296 p.
  3. Rogovin Z.A. Khimicheskie prevrashcheniya i modifikatsiya tsellyulozy [Chemical Transformations and Modification of Cellulose]. Moscow, Khimiya Publ., 1987, 173 p.
  4. Patent RF 2375323. Sposob polucheniya silikokizeritovogo vyazhushchego [RF Patent 2375323. Method of Generation of the Silica-kizerit Binding Material]. Published on December 10, 2009.
  5. Pustovgar A.P. Effektivnost’ dobavok mikrokremnezema pri modifikatsii betonov [Effectiveness of Micro-silica Additives If Used to Modify Concretes]. StroyPROFIl’ Internetzhurnal [Construction Profile Internet Journal]. 2005, no. 8. Available at: http // storyprofile.com/archive/1980. Date of access: December 06, 2012.
  6. Legostaeva N.V. Magnezial’nye vyazhushchie i materialy na ikh osnove iz magnezitov Savinskogo mestorozhdeniya [Magnesia Binders and Materials on Their Basis Made of Magnesites of Savinskoye Deposit]. Tomsk, 2006.

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FINE CONCRETE FOR HYDRAULIC ENGINEERING MODIFIEDBY A MULTI-COMPONENT ADDITIVE

Vestnik MGSU 8/2013
  • Aleksashin Sergey Vladimirovich - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Technology of Binders and Concretes, 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 .
  • Bulgakov Boris Igorevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of the Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (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 97-103

This article covers the design of an advanced multi-component additive and the study of its influence produced on the properties of fine-grained concrete. The authors also provide data on the earlier studies of the effect produced by domestic superplasticizers on the plasticity of fine-grained concrete mixtures and the curing behaviour of plasticized fine concretes. Russian-made superplasticizer Khimkom F1 was used to retain the plasticity of the fine concrete under consideration. Khimkom F1 produces a better effect on concrete curing than Polyplast SP-1, Cemactive SU-1, and Linomix SP 180-2. Superplasticizer Khimkom F1, as opposed to plasticizers based on lingo-sulfonate or naphthalene, for example S-3, has no bad odour; it is non-corrosive if applied to steel reinforcement inside concrete. The research has proved that the optimal amount of Khimkom F1 is 1.2% of the total amount of the binder.Metakaolin fume was used to improve the microstructure of the concrete, including its strength, waterand frost-resistance. Improvement of the above properties was proved in the course of the experiment. Its optimal content equals to 15% of the total amount of the binder. The study of the two domestically made water repellents (Sofexil40 and Sofexil 60-80) was conducted to identify and to compare their water and frost resistance. Experimental findings have proven that Sofexil 40 produces higher influence on the properties of the fine concrete, used for hydraulic engineering purposes, than Sofexil 60-80. The optimal content of the water repellent is 0.2% of the binder content. Sofexil 40 must be dissolved in the water in advance. Finally, the authors provide their experimental findings in terms of the optimal composition of the fine hydraulic concrete having pre-set properties.

DOI: 10.22227/1997-0935.2013.8.97-103

References
  1. Aleksashin S.V., Bulgakov B.I. Poluchenie melkozernistykh betonov s vysokimi ekspluatatsionnymi pokazatelyami [Production of Fine-grained High Performance Concrete]. Sbornik nauchnykh trudov Instituta stroitel'stva i arkhitektury [Collection of Research Papers of the Institute of Construction and Architecture]. Moscow, KYuG Publ., 2012, pp. 12—13.
  2. Lukuttsova N.P., Pykin A.A., Chudakova O.A. Modifitsirovanie melkozernistogo betona mikro- i nanorazmernymi chastitsami shungita i dioksida titana [Modification of Fine-grained Concrete by Micro Particles of Schungite and Titanium Dioxide]. Vestnik BGTU im. V.G. Shukhova [News Bulletin of Belgorod Shukhov State Technical University]. 2010, no. 2, pp. 67—70
  3. Falikman V.R. New High Performance Polycarboxilate Superplasticizers Based on Derivative Copolymers of Maleinic Acid. 6th International Congress “GLOBAL CONSTRUCTION” Advances in Admixture Technology. Dundee, 2005, pp. 41—46.
  4. Lukuttsova N.P. Nanomodifitsiruyushchie dobavki v beton [Nano-modifying Additives for Concrete]. Stroitel'nye materialy [Construction Materials]. 2010, no. 9, pp. 101—104.
  5. Bazhenov Yu.M., Lukuttsova N.P., Matveeva E.G. Issledovanie nanomodifitsirovannogo melkozernistogo betona [Research into Nano-modified Fine Concrete]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, vol. 2, no. 4, pp. 415—418.
  6. Shah S.P., Ahmad S.H. High Performance Concrete: Properties and Applications. McGraw-Hill, Inc., 1994, 403 p.
  7. Ramachandran V.S. Dobavki v beton: spravochnoe posobie [Additives for Concrete: Reference Book]. Moscow, Stroyizdat Publ., 1988, 291 p.
  8. Commission 42-CEA. Properties Set Concrete at Early Ages. State-of-the-art-report. Materiaux et Constructions. 1981, vol. 14, no. 4, p. 15.
  9. Fennis S.A.A.M., Walraven J.C. Design of Ecological Concrete by Particle Packing Optimization. Delft, Delft University of Technology, 2010, pp. 115—144.
  10. Batrakov V.G. Modifitsirovannye betony. Teoriya i praktika [Modified Concretes. Theory and Practice.] Moscow, Tehnoproekt Publ., 1998, 560 p.

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RESEARCH OF INTERACTION BETWEEN CAUSTIC MAGNESITE AND A MICROSILICA ADDITIVE

Vestnik MGSU 3/2012
  • Ustinova Yuliya Valerievna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Associated Professor, Department of General Chemistry 8 (499) 183-32-92, 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 .
  • Nasonova Alla Evgenevna - Moscow State University of Civil Engineering (MSUCE) post-graduate student, Department of General Chemistry 8 (499) 183-32-92, Moscow State University of Civil Engineering (MSUCE), 26, Yaroslavskoe shosse, Moscow, 129337, Russia; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Nikiforova Tamara Pavlovna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Deputy Chair, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Kozlov Valeriy Vasilevich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Department of General Chemistry 8 (499) 183-32-92, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russia.

Pages 100 - 104

The authors argue that a dry mixture composed of caustic magnesite and a microsilica additive represents a binding material which contributes to formation of a durable and water resistant artificial stone. The results of the research of the artificial stone performed through the application of the Fourier IR spectroscopy method are provided. Interaction between magnesium oxide (MgO) as the basic oxide and microsilica as an acidic oxide is proposed. This interaction makes it possible to add water to Sorel cement instead of the magnesium chloride (MgCl2) solution.
Compressive strength of the dry mix containing 10 % of microsilica has been measured. In the event of hydraulic hardening, the compressive strength of the dry mix is 11.5 MPa, while the compressive strength of the water-saturated mix is equal to 12.0 MPa. In the aftermath of the air-setting procedure, the compressive strength of the dry mix is 10.0 MPa, while the compressive strength of the water-saturated mix is 21.0 MPa. The IR spectra of the specimen exhibit vibrations at 1100-400 cm-1 that correspond to the area of Si-O and Si-O-Me stretching vibrations, a peak at 1121-1119 cm-1 that can be assigned to Si-O-Si bond vibrations, and a peak at 474-472 characteristic of Si-O-Mg stretching vibrations. The areas of 3700-3000 cm-1 and 1650-1600 cm-1 are assigned to stretching and deformational vibrations of OH groups, respectively.

DOI: 10.22227/1997-0935.2012.3.100 - 104

References
  1. Ustinova Yu.V., Nikiforova T.P., Kozlov V.V., Nasonova A.E. Issledovanie vzaimodeystviya kausticheskogo magnezita s dobavkoy khrizotil-asbesta [Research of Interaction between Caustic Magnesite and the Chrysotile-Asbestos Additive]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering], 2011, Issue 4, pp. 169 - 173.
  2. Ustinova Yu.V., Nasonova A.E., Kozlov V.V. Povyshenie vodostoykosti magnezial’nykh vyazhushchikh [Improvement of Water Resistance of Magnesia-based Binders]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering], 2010, Issue 4, v. 3. pp. 123—127.
  3. Sidorov V.I., Tupikin E.I., Malyavskiy N.I., Ustinova Yu.V., Platonova E.E. Ekologicheskie aspekty primeneniya i ekspluatatsii konstruktsiy na osnove steklomagnievogo lista [Environmental Aspects of Application and Maintenance of Structures of a Glass-Magnesium Sheet]. Jekologija urbanizirovannyh territorij [Ecology of Urban Lands], 2009, Issue 4, pp. 65—68.
  4. Nefed’ev A.P. Regulirovanie protsessov tverdeniya magnezial’nogo vyazhushchego [Regulation of Processes of Hardening of Magnesium Binding Materials]. Collection of research papers of Russian students, available at: http // www.cs-alternativa.ru/text/1954. Date of access: February 19, 2012.
  5. Des King. Microsilica in Concrete. Concrete Masonry. Íîng Kong Concrete Repair Association. Available at: http://www.hkcra.com.hk/tech_mason_00_2.htm. Date of access: February 19, 2012.
  6. B. Tooper, L. Cartz. Structure and Formation of Magnesium Oxychloride Sorel Cements. Nature 211, July 2, 1966. pp. 64—66.
  7. Pustovgar A.P. Effektivnost’ dobavok mikrokremnezema pri modifikatsii betona [Efficiency of Microsilica Additives Introduced into the Concrete]. StroyPROFIl’ [Building Profile]. 2005, Issue 8, available at: http // stroyprofile.com/archive/1980. Date of access: February 19, 2012.
  8. Shishelova T.I., Sozinova T.V., Konovalova A.N. Praktikum po spektroskopii. Voda v mineralah. [Workshop in Spectroscopy. Water in Minerals]. Moscow, Akademiya estestvoznaniya [Academy of Nature Studies], 2010.

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Physical and mechanical properties of composites based on liquid glass for buildings and structures

Vestnik MGSU 7/2015
  • Markov Sergey Vital’evich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Professor, Department of Housing and Utility Complex, 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 .
  • Zavalishin Evgeniy Vasil’evich - Ogarev Mordovia State University Candidate of Technical Sciences, Associate Professor, vice dean, Department of Construction and Architecture, Ogarev Mordovia State University, 68 Bolshevistskaya Str., Saransk, 430005, Republic of Mordovia, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Yunkevich Aleksey Vladimirovich - Research Design-and-engineering and Technological Institute (JC “VNIIzhelezobeton” ) engineer, Research Design-and-engineering and Technological Institute (JC “VNIIzhelezobeton” ), 62 A 2-ya Vladimirskaya str., Moscow, 111141, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 69-78

Composite materials for building structures have certain advantages. In this field Russian scientists got patents for inventions and useful models of new construction materials and structures. Scientific investigations on determining deformation capacity of concretes and building structures of other materials (wood) and their limit states are continuing with account for force and environment impacts and degradation weakening of construction elements. The article presents the study of physical and mechanical properties of composites based on liquid glass, depending on their quantitative and qualitative composition. The properties of the composites based on liquid glass depend on the type, quality of the composites in the material, their durability, correlation of their strength properties, adhesion of binders and filler, etc. In the studied composites different filler content, hardener, as well as modifying additives were used, that improve the properties of materials.

DOI: 10.22227/1997-0935.2015.7.69-78

References
  1. Erofeev V.T., Travush V.I., Karpenko N.I., Bazhenov Yu.M., Zhidkin V.F., Rodin A.I., Rimshin V.I., Smirnov V.F., Bogatov A.D., Kaznacheev S.V., Rodina M.A. Patent 2491239 RF, MPK C04B 7/52. Biotsidnyy portlandtsement. Zayavka № 2012107175/03 ; zayavl. 27.02.2012; opubl. 27.08.2013. Byul. № 24 [Russian Patent 2491239 RF, MPK C04B 7/52. Biocide Portland Cement. Notice no. 2012107175/03 ; appl. 27.02.2012; publ. 27.08.2013. Bulletin no. 24]. Patent holder FGBOU VPO “MGU im. N.P. Ogareva”. 4 p. (In Russian)
  2. Erofeev V.T., Rimshin V.I., Bazhenov Yu.M., Travush V.I., Karpenko N.I., Magdeev U.Kh., Zhidkin V.F., Burnaykin N.F., Rodin A.I., Smirnov V.F., Bogatov A.D., Kaznacheev S.V. Patent 2491240 RF, MPK C04B 7/52. Biotsidnyy portlandtsement. Zayavka № 2012107722/03; zayavl. 29.02.2012; opubl. 27.08.2013. Byul. № 24 [Russian Patent 2491240 RF, MPK C04B 7/52. Biocide Portland Cement. Notice no. 2012107722/03; appl. 29.02.2012; publ. 27.08.2013. Bulletin no. 24]. Patent holder FGBOU VPO “MGU im. N.P. Ogareva”. 4 p. (In Russian)
  3. Erofeev V.T., Rimshin V.I., Bazhenov Yu.M., Magdeev U.Kh., Zhidkin V.F., Burnaykin N.F.,Rodin A.I., Bogatov A.D., Kaznacheev S.V., Rodina M.A. Patent 2496729 RF, MPK C04B. Portlandtsement. Zayavka № 2012107720 ; zayavl. 29.02.2012 ; opubl. 27.10.2013 [Russian Patent 2496729 RF, MPK C04B. Portland Cement. Notice no. 2012107720 ; appl. 29.02.2012 ;publ. 27.10.2013]. Bank patentov [Bank of Patents]. Patent holder FGBOU VPO “MGU im. N.P. Ogareva”. Available at: http://bankpatentov.ru/node/426361. Date of access: 15.05.2015. (In Russian)
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  6. Anpilov S.M., Eryshev V.A., Gaynulin M.M., Murashkin V.G., Murashkin G.V., Anpilov M.S., Rimshin V.I., Sorochaykin A.N. Patent RF na poleznuyu model’ 147452. Sbornyy stroitel’nyy element : referat. Opubl. 08.07.2014 [Russian Useful Model Patent 147452. Ready-made Building Element : Report. Publ. 08.07.2014]. Poleznaya model’.ru [Useful Model.ru]. Available at: http://poleznayamodel.ru/model/14/147452.html/. Date of access: 15.05.2015. (In Russian)
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  8. Bondarenko V.M., Kurzanov A.M., Rimshin V.I. Mekhanizm seysmicheskikh razrusheniy zdaniy [Mechanism of Seismic Destruction of Buildings]. Vestnik Rossiyskoy akademii nauk [Bulletin of the Russian Academy of Sciences]. 2000, vol. 70, no. 11, pp. 1005—1009. (In Russian)
  9. Bondarenko V.M., Rimshin V.I. Ostatochnyy resurs silovogo soprotivleniya povrezhdennogo zhelezobetona [Residual Life of Force Resistance of Damaged Reinforced Concrete]. Vestnik otdeleniya stroitel’nykh nauk Rossiyskoy akademii arkhitektury i stroitel’nykh nauk [Bulletin of the Department of Construction Sciences of the Russian Academy of Architecture and Construction Sciences]. 2005, no. 9, pp. 119—126. (In Russian)
  10. Krishan A.L., Astaf’eva M.A., Narkevich M.Yu., Rimshin V.I. Opredelenie deformatsionnykh kharakteristik betona [Definition of the Deformation Properties of Concrete]. Estestvennye i tekhnicheskie nauki [Natural and Technical Sciences]. 2014, no. 9—10 (77), pp. 367—369. (In Russian)
  11. Krishan A.L., Astaf’eva M.A., Rimshin V.I. Predel’nye otnositel’nye deformatsii tsentral’no-szhatykh zhelezobetonnykh elementov [Limit Relative Deformations of Axially Loaded Reinforced Concrete Elements]. Estestvennye i tekhnicheskie nauki [Natural and Technical Sciences]. 2014, no. 9—10 (77), pp. 370—372. (In Russian)
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  13. Larionov E.A., Rimshin V.I., Vasil’kova N.T. Energeticheskiy metod otsenki ustoychivosti szhatykh zhelezobetonnykh elementov [Energy Method of Estimating the Resistance of Compressed Reinforced Concrete Elements]. Stroitel’naya mekhanika inzhenernykh konstruktsiy i sooruzheniy [Structural Mechanics of Engineering Constructions and Buildings]. 2012, no. 2, pp. a77—81. (In Russian)
  14. Roshchina S.I., Rimshin V.I. Raschet deformatsiy izgibaemykh armirovannykh derevyannykh elementov s uchetom polzuchesti [Deformation Calculation of Bendable Reinforced Wooden Elements woth Account for Creep]. Izvestiya Yugo-Zapadnogo gosudarstvennogo universiteta [News of Southwest State University]. 2011, no. 1 (34), pp. 121—124. (In Russian)
  15. Rimshin V.I., Bikbov R.Kh., Kustikova Yu.O. Nekotorye elementy usileniya stroitel’nykh konstruktsiy kompozitnymi materialami [Some Elements of Building Structures Reinforcement with Composite Materials]. Vestnik BelGTU [Bulletin of BSTU named after V.G. Shukhov]. 2005, no. 10, pp. 381—383. (In Russian)
  16. Rimshin V.I., Kustikova Yu.O. Fenomenologicheskie issledovaniya velichiny stsepleniya bazal’toplastikovoy armatury s betonom [Phenomenological Analysis of Linkage Value of Basalt-Plastic Reinforcement with Concrete]. Izvestiya Yugo-Zapadnogo gosudarstvennogo universiteta. Seriya: Tekhnika i tekhnologii [News of Southwest State University. Series: Equipment and Technologies]. 2011, no. 1, pp. 27—31. (In Russian)
  17. Rimshin V.I., Kustikova Yu.O. Mekhanika deformirovaniya i razrusheniya usilennykh zhelezobetonnykh konstruktsiy [Mechanics of Deformation and Destruction of Reinforced Concrete Structures]. Izvestiya Orlovskogo gosudarstvennogo tekhnicheskogo universiteta. Seriya: Stroitel’stvo i transport [News of Orlov State Technical University. Series: Construction and Transport]. 2007, no. 3/15 (537), pp. 53—56. (In Russian)
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  20. Rimshin V.I., Galubka A.I., Sinyutin A.V. Inzhenernyy metod rascheta usileniya zhelezobetonnykh plit pokrytiya kompozitnoy armaturoy [Engineering Calculation Method of Concrete Slab Reinforcement by Composite Reinforcement]. Nauchno-tekhnicheskiy vestnik Povolzh’ya [Scientific and Technical Volga region Bulletin]. 2014, no. 3, pp. 218—220. (In Russian)
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  32. Vail J.G. Soluble Silicates (ACS Monograph Series). Reinhold, New York, 1952, vol. 1, pp. 158; Vol. 2, p. 549.
  33. Weldes H.H., Lange K.R. Properties of Soluble Silicates. Ind. Eng. Chem. 1969, vol. 61, no. 4, pp. 29—44. DOI: http://dx.doi.org/10.1021/ie50712a008.
  34. Williamson G., Glasser F.P. The Crystallization of Na2O∙2SiO2. Phys. Chem. Glasses. 1966, vol. 7, no. 4, pp. 127—128.

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MAGNESIUM BINDER WITH THE MICRO-SILICA ADDITIVE

Vestnik MGSU 7/2012
  • Ustinova Yuliya Valer'evna - Moscow State University of Civil Engineering (MSUCE) +7 (499) 183-32-92, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Nasonova Alla Evgenievna - Moscow State University of Civil Engineering (MGSU) +7 (499) 183-32-92, Moscow State University of Civil Engineering (MGSU), 6 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Nikiforova Tamara Pavlovna - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Deputy Chair, Department of General Chemistry, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Kozlov Valeriy Vasil'evich - Moscow State University of Civil Engineering (MSUCE) Doctor of Technical Sciences, Professor, Department of Building Materials, +7 (499) 183-32-29, Moscow State University of Civil Engineering (MSUCE), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 147 - 151

The authors demonstrate that the use of the dry mix that constitutes caustic magnesite and a micro-silica additive makes it possible to obtain a binding material that contributes to formation of a durable and water-resistant artificial stone. The results of the research performed through the employment of methods of Fourier IR spectroscopy and electronic microscopy are provided. Interaction between magnesium oxide (MgO) as the basic oxide and micro-silica as the acidic oxide is proposed.
The compressive strength of the dry mix containing 16.7 % of micro-silica has been measured. In the event of hydraulic hardening, the compressive strength is equal to 11.5 MPa and 12.0 MPa in dry and water-saturated states, respectively. In the aftermath of air setting, the compressive strength is 10.0 MPa and 21.0 MPa in dry and water-saturated states, respectively.
Thereafter, the dry mix is gaged by the sulfuric acid solution (10 %) to identify the pH influence. In the event of hydraulic hardening, the compressive strength is 19.8 MPa and 14.1 MPa in dry and water-saturated states, respectively. In the aftermath of air setting, the compressive strength is 18.0 MPa and 19.9 MPa in dry and water-saturated states, respectively.

DOI: 10.22227/1997-0935.2012.7.147 - 151

References
  1. Ustinova Yu.V., Nikiforova T.P., Kozlov V.V., Nasonova A.E. Issledovanie vzaimodeystviya kausticheskogo magnezita s dobavkoy khrizotil-asbesta [Research of Interaction between Caustic Magnesite and the Chrysotile-asbestos Additive] Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2011, no. 4, pp. 169—173.
  2. Ustinova Yu.V., Nasonova A.E., Kozlov V.V. Povyshenie vodostoykosti magnezial’nykh vyazhushchikh [Improvement of Water Resistance of Magnesium Binders]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 4, vol. 3, pp. 123—127.
  3. Sidorov V.I., Tupikin E.I., Malyavskiy N.I., Ustinova Yu.V., Platonova E.E. Ekologicheskie aspekty primeneniya i ekspluatatsii konstruktsiy na osnove steklomagnievogo lista [Environmental Aspects of Application and Operation of Structures Based on the Glass-and-Magnesium Sheet]. Ekologiya urbanizirovannykh territoriy [Ecology of Urbanized Lands]. 2009, no. 4, pp. 65—68.
  4. Zimich V.V. Effektivnye magnezial’nye materialy stroitel’nogo naznacheniya s ponizhennoy gigroskopichnost’yu [Effective Low Water Absorption Magnesium Building Materials]. 2010.
  5. Nefed’ev A.P. Regulirovanie protsessov tverdeniya magnezial’nogo vyazhushchego [Regulation of Processes of Hardening of Magnesium Binding Materials]. Available at: http//www.cs-alternativa.ru/text/1954. Date of access: 19.02.2012.
  6. Pustovgar A.P. Effektivnost’ dobavok mikrokremnezema pri modifikatsii betona [Effectiveness of Microsilica Additives Used to Modify the Concrete] StroyPROFIl’ [Building Profile] Internet Journal. 2005, no. 8. Available at: http//stroyprofile.com/archive/1980. Date of access: 19.02.2012.
  7. Ustinova Yu.V., Nasonova A.E., Kozlov V.V. Issledovanie vzaimodeystviya kausticheskogo magnezita s dobavkoy mikrokremnezema [Research of Interaction between Caustic Magnesite and a Microsilica Additive]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no. 3, pp. 100—104.
  8. Shishelova T.I., Sozinova T.V., Konovalova A.N. Praktikum po spektroskopii. Voda v mineralakh [Workshop on Spectroscopy. Water in Minerals]. Moscow, Akademiya Estestvoznaniya [Academy of Natural Sciences] Publ., 2010.

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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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EFFECT OF RICE HUSK ASH ON THE PROPERTIES OF HYDROTECHNICAL CONCRETE

Vestnik MGSU 6/2018 Volume 13
  • Ngo Xuan Hung - Moscow State University of Civil Engineering (National Research University) (MGSU) Postgraduate Student, Department Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Tang Van Lam - Moscow State University of Civil Engineering (National Research University) (MGSU) Postgraduate Student, Department Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Bulgakov Boris Igorevich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of the Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Aleksandrova Ol’ga Vladimirovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Department of the Technology of Binders and Concretes, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Larsen Oksana Alexandrovna - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Ha Hoa Ky - Moscow State University of Civil Engineering (National Research University) (MGSU) Student, Department of the Construction of Unique Buildings and Structures, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Melnikova Anastasiya Igorevna - Moscow State University of Civil Engineering (National Research University) (MGSU) Student, Institute of Construction and Architecture, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Pages 768-777

Subject: operation of concrete and reinforced concrete hydraulic structures on river systems and in the extended coastal zone of Vietnam takes place under the influence of aggressive environments, which significantly limits their service life. Therefore, the search for ways to solve the problem of increasing the durability and terms of maintenance-free operation of such facilities is very important. Previous studies have established the possibility of increasing the operational performance of hydraulic concrete (HC) by modifying their structure with complex additives that combine the water-reducing and densification effects. The possibility of increasing the quality of hydraulic concretes by using rice husk ash (RHA) as a finely dispersed mineral additive with high pozzolanic activity was also established. Research objectives: modification of the structure of hydraulic concrete; determination of the effect of an organo-mineral modifier consisting of RHA in combination with a superplasticizer on water resistance, chloride-ion permeability and strength of hydraulic concrete. Materials and methods: portland cement of type CEM II 42.5 N was used with the addition of rice husk ashes and a superplasticizer ACE 388 “Sure Tec” BASF. Quartz sand and limestone crushed stone were used as aggregates. Composition of the concrete mixture, compressive strength of concretes, water resistance and permeability of the concrete structure for chloride ions was calculated based on methods of Russian and international standards. Results: the use of an organo-mineral modifier consisting of a water-reducing superplasticizer ACE 388 and finely dispersed rice husk ash leads to a densification of the HC structure, which increases their water resistance and decreases the permeability for chloride ions. Conclusions: it was found that the introduction of the developed organo-mineral additive into the concrete mixture leads to densification of the concrete structure, contributes not only to the growth of compression strength at the age of 28 days by 32 % for HC-10, 23 % for HC-20 and 9 % for HC-30, but also to the increase of its water resistance by one or two marks. In addition, there is a significant decrease in the permeability for chloride ions of HC samples containing 10, 20 and 30 % RHA by mass of the binder, since the average value of electric charge that have passed through the samples made of HC-10, HC-20 and HC-30 were 305, 367.5 and 382.7 K respectively against 2562 K for control samples made of non-modified concrete without RHA. (The experimental results of measuring permeability for chloride ions were obtained according to standard ASTM C1202-12). Our study has confirmed the assumption that the introduction into the concrete mix of organo-mineral modifier consisting of a polycarboxylate superplasticiser and fine ash of rice husk, up to 90 % consisting of amorphous silica, will increase the density of hydraulic concrete structure, which will increase their strength, water resistance and reduce permeability for chloride ions.

DOI: 10.22227/1997-0935.2018.6.768-777

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