RESEARCH OF BUILDING MATERIALS

FINE-GRAINEDCONCRETE MODIFIED BY INTEGRATED MICRO-DISPERSIVE ADDITIVE

Вестник МГСУ 2/2013
  • Bazhenov Yuriy Mikhaylovich - Moscow State University of Civil Engineering (MGSU) Doctor of Technical Sciences, Professor, Chair, Department of Technology of Binders and Concretes; +7 (495) 781-80-07, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Lukuttsova Natal’ya Petrovna - Federal State Educational Institution of Higher Education Bryansk State Technological University of Engineering Doctor of Technical Sciences, Professor, chair, Department of Building Structures Production, Federal State Educational Institution of Higher Education Bryansk State Technological University of Engineering, prospekt Stanke Dimitrova str., Bryansk, 241037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Karpikov Evgeniy Gennadievich - Bryansk State Academy of Engineering and Technology (BGITA) +7 (953) 282-82-48, Bryansk State Academy of Engineering and Technology (BGITA), 3 prospekt Stanke Dimitrova, Bryansk, 241037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 94-100

The purpose of the research consists in development of integrated micro dispersive additives designated for effective fine-grained concretes of the new generation and based on the inferior grade quartz sand.The academic novelty of the research consists in substantiation of feasibility of generation of effective fine-grained concretes that demonstrate improved physical and mechanical properties due to the adjustment of the structure of the integrated micro additive developed by the authors.The integrated additive comprises quartz sand milled in the ball mill together with C-3 plasticizer, the content of which is equal to 1 % of the mass of the material, and the milling time is 60 min. Another objective of the research is the study of the effect of micro-additives produced onto physical-mechanical properties of samples of fine-grained concretes (dimen-sions 4×4×16 cm) made of cement M 500 D20 and quartz sand with Mhardened according to the regular procedure.= 0,9 andThus, the authors have discovered that the integrated micro-additive improves the compressive strength of the concrete to 50 MPA, flexural strength — up to 8,3 MPA, water absorption — to 1,4 % and frost resistance — to F75, while its content reaches 5—10% of the cement mass.

DOI: 10.22227/1997-0935.2013.2.94-100

Библиографический список
  1. 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 Using Micro- and Nano-sized Particles of Schungite and Titanium Dioxide]. Vestnik BGTU im. V.G. Shukhova [Proceedings of Bryansk State Technical University named after Shukhov]. 2010, no. 2, pp. 66—70.
  2. Bazhenov Yu.M., Lukuttsova N.P., Matveeva E.G. Issledovanie vliyaniya nanomodifitsiruyushchey dobavki na prochnostnye i strukturnye parametry melkozernistogo betona [Research into the Influence of the Nano-modifying Additive on the Strength and Structural Parameters of the Fine-grained Concrete]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 2, pp. 215—219.
  3. Bazhenov Yu.M., Lukuttsova N.P., Matveeva E.G. Issledovanie nanomodifitsirovannogo melkozernistogo betona [Study of Nano-modified Fine-grained Concrete]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 4, vol. 2, pp. 415—421.
  4. Lukuttsova N.P., Matveeva E.G. Nanomodifitsirovannnyy melkozernistyy beton [Nanomodified Fine-grained Concrete]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, special issue no. 4, pp. 84—90.
  5. Lukuttsova N.P., Matveeva E.G., Fokin D.E. Issledovanie melkozernistogo betona, modifitsirovannogo nanostrukturnoy dobavkoy [Study of Fine-grained Concrete Modified by the Nano-structured Additive]. Vestnik BGTU im. V.G. Shukhova [Proceedings of Bryansk State Technical University named after Shukhov]. 2010, no. 4, pp. 6—11.
  6. Chan Min’ Dyk, Sakharov G.P. Usadka i polzuchest’ melkozernistogo betona iz ekstrudirovannykh smesey [Shrinkage and Creep of the Fine-grained Concrete That Contains Extruded Mixtures]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2009, special issue no. 1, pp. 384—390.
  7. Karpikov, E.G., Petrov R.O., Kirienko D.A. Kompleksnye dobavki dlya betonov, kak faktor resheniya problem urbaniirovannykh territoriy [Integrated Additives for Concretes as a Factor of Resolution of Problems of Urbanized Territories]. Biosfernosovmestimye goroda i poseleniya: materialy mezhdunar. nauchn.-prakt. konf. [Biosphere-compatible Cities and Settlements. Works of the International Scientific and Practical Conference]. Bryansk, 11—13 December, 2012, pp. 78—82.
  8. Bazhenova S.I., Alimov L.A. Vysokokachestvennye betony s ispol’zovaniem otkhodov promyshlennosti [High-quality Concretes That Contain Industrial Waste]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 1, pp. 226—231.
  9. Tolypina N.M., Rakhimbaev Sh.M., Karpacheva E.N. Ob effektivnosti deystviya superplastifikatorov v melkozernistykh betonakh v zavisimosti ot vida melkogo zapolnitelya [On the Effectiveness of Super-plasticizers in Fine-grained Concretes Depending on the Type of the Fine Aggregate]. Vestnik BGTU im. V.G. Shukhova [Proceedings of Bryansk State Technical University named after Shukhov]. 2010, no. 3, pp. 66—74.
  10. Pykin A.A., Lukuttsova N.P., Kostyuchenko G.V. K voprosu o povyshenii svoystv melkozernistogo betona mikro- i nanodispersnymi dobavkami na osnove shungita [On the Issue of Improvement of the Properties of Fine-grained Concrete Using Micro- and Nano-dispersive Additives That Contain Schungite]. Vestnik BGTU im. V.G. Shukhova [Proceedings of Bryansk State Technical University named after Shukhov]. 2011, no. 2, pp. 22—27.

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Variance analysis of hydrophylic behaviour of vlieseline performed on the basis of parameters of its exposure to the glow discharge

Вестник МГСУ 9/2012
  • Fedosov Sergey Viktorovich - Ivanovo State Architecturally-building University Acad. of RAASN, Doctor tech. Sciences, Professor, rector of +7-(4932)-32-85-40, Ivanovo State Architecturally-building University, 20, 8-th March, Ivanovo, Russia, 153037; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Tanichev Maxim Vladimirovich - Ivanovo State Architecturally-building University Post-graduate Student +7-(908)-564-64-42, +7-(4932)-42-60-13, Ivanovo State Architecturally-building University, 20, 8-th March, Ivanovo, Russia, 153037; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Akulova Marina Vladimirovna - Ivanovo State Polytechnic University (IVGPU) Doctor of Technical Sciences, Professor, counselor, Russian Academy of Architectural and Building Sciences (RAASN), head, Department of Con- struction Materials Science, Special Technologies and Technological Facilities department, Ivanovo State Polytechnic University (IVGPU), office 305, 20 8-th Marta street, Ivanovo, 153037, Russian Federation; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .
  • Slashchev Roman Valerievich - Ivanovo State University of Chemistry and Technology (ISTUCT) student, Ivanovo State University of Chemistry and Technology (ISTUCT), 7 F. Engels St., Ivanovo, 153000, Russian Federation.
  • Shutov Dmitriy Alexandrovich - Ivanovo State University of Chemistry and Technology Ph.D., Associated Professor +7-(920)-675-39-25, Ivanovo State University of Chemistry and Technology, 7, F. Engels, Ivanovo, 153000; Этот e-mail адрес защищен от спам-ботов, для его просмотра у Вас должен быть включен Javascript .

Страницы 172 - 178

The subject matter of the article represents summarized findings of the variance analysis of the
fractional factorial experiment (the Latin Matrix). The items analyzed collectively by the coauthors
include the discharge current, the pressure of the orifice gas, or the air, and the period of exposure to
the direct current of the glow discharge. The properties analyzed by the coauthors include the water
absorption capacity, the wettability, and the capillary rise of the repair vlieseline. The discharge current
range was 20-100 mA, the pressure range was 50-200 Pa and the treatment time range was
15-120. The experiment was conducted according to the Latin matrix method, and the analysis of
variance (ANOVA) was used to check the influence of the discharge current, pressure and the treatment
time onto the hydrophilic properties of the material. The coauthors have demonstrated that the
discharge parameters are an insignificant factor in comparison to the exposure period.

DOI: 10.22227/1997-0935.2012.9.172 - 178

Библиографический список
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  3. Fedosov S.V., Mel’nikov B.N., Akulova M.V., Sharnina L.V. Primenenie tleyushchego razryada v stroitel’noy i tekstil’noy promyshlennosti [Application of the Glow Discharge in the Civil Engineering and Textile Industries]. Ivanovo, IGKhTU Publ., IGASU Publ., 2008, 236 p.
  4. Sharnina L.V. Nauchnye osnovy i tekhnologii otdelki tekstil’nykh materialov s ispol’zovaniem nizkotemperaturnoy plazmy, novykh preparatov i sposobov kolorirovaniya [Fundamentals and Technologies of Treatment of Textiles by the Low-temperature Plasma, New Preparations and Coloration Techniques]. 2006, 335 p.
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  6. Elin V.K. Fibrobeton, armirovannyy voloknami, modifitsirovannymi plazmoy tleyushchego razryada [Glow Discharge Plasma Modifi cation of the Fibre-reinforced Concrete]. Ivanovo, 2006, 155 p.
  7. Fedosov S.V., Akulova M.V., Tanichev M.V., Shutov D.A. Issledovanie vliyaniya nizkotemperaturnoy plazmy tleyushchego razryada na gidrofil’nye svoystva remontnogo flizelina [Research of the Influence of Low-temperature Glow Discharge Plasma Treatment on Hydrophylic Properties of Vlieselinebased Wallpaper]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2012, no 1, pp. 63—67.
  8. Fedosov S.V., Akulova M.V., Tanichev M.V. Modifi katsiya rulonnykh stenovykh materialov nizkotemperaturnoy plazmoy tleyushchego razryada na primere remontnogo flizelina [Modification of Roll Wallpaper by the Low-temperature Glow Discharge Plasma Exemplified by Repair Vlieseline]. Collected works of the 18th International Conference of Science and Technology “Information Media of the Higher Education”. Ivanovo, 2011, pp.195—199.
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Increase of strength of partially destroyed wood of monuments of wooden architecture

Вестник МГСУ 11/2018 Том 13
  • Pokrovskaya Elena N. - Moscow State University of Civil Engineering (National Research University) (MGSU) Doctor of Technical Sciences, Professor, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.

Страницы 1305-1314

Introduction. Monuments of wooden architecture - an invaluable part of the national culture, they reflect the originality and independence of the national architecture. The problem of preservation of monuments of wooden architecture with the passage of time is becoming increasingly important. Many monuments were burned; some were destroyed due to the loss of structural strength under the influence of humidity, biodestruction, etc. Materials and methods. The samples of partially destroyed wood of the Anglican Church of the city of Arkhangelsk, built in 1833, were studied. The samples were subjected to surface modification with the formation of a two-layer sandwich coating, the first layer of which was various phosphorus-containing flame retardants, and the second layer - polymer composites. As polymer composites, glue based on epoxy resin and polyurethane composition “Akvidur TT” were used. The reactive organophosphorus compounds, capable of forming covalent bonds with wood polymers in the surface layer of partially destroyed wood, were chosen as flame retardants. Modified samples were subjected to physicochemical studies to determine the strength, fire resistance, hydrophobicity. The strength of the modified samples was compared with the strength of the untreated samples of partially destroyed wood of the Anglican Church of Arkhangelsk. The appearance of covalent bonds between the wood and the modifier was determined by Fourier-transform spectroscopy. Results. Surface modification of the samples of the monument increased the strength of wood by 2-2.5 times, reduced water absorption by 3 times, reduced the loss of mass during combustion according to GOST 27484-87 to 5.0-6.4 %. Conclusions. The study solves the urgent problem of preservation of monuments of wooden architecture by increasing the strength of partially destroyed wood, as well as giving it fire resistance, hydrophobicity and biostability in carrying out restoration work.

DOI: 10.22227/1997-0935.2018.11.1305-1314

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