RESEARCH OF BUILDING MATERIALS

FINE-GRAINEDCONCRETE MODIFIED BY INTEGRATED MICRO-DISPERSIVE ADDITIVE

Vestnik MGSU 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; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • 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; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • 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; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 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

References
  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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Study of the properties of fine-grained concrete modifiedby the nanodisperse serpentinite additive

Vestnik MGSU 3/2013
  • Pustovgar Andrey Petrovich - Moscow State University of Civil Engineering (MGSU) Candidate of Technical Sciences, Director, Research and Scientific Institute for Construction Materials and Technologies, Professor, Department of Construction of Nuclear Installations, 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 .
  • 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; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .
  • Ustinov Aleksandr Gennad’evich - Bryansk State Academy of Engineering and Technology (BGITA) postgraduate student, Department of Production of Structural Units, Bryansk State Academy of Engineering and Technology (BGITA), 3 pr. Stanke Dimitrova, Bryansk, 241037, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 155-162

The purpose of the research consists in development of a nano-sized additive containing mineral serpentinite designated for fine-grained concretes. In this article, the results of research into the influence of nanodisperse mineral serpentinite additives on physical-mechanical properties of fine-grained concrete are provided.Nano-sized particles are obtained by the milling of serpentinite together with C-3 plasticizer, the content of which is equal to 1 % of the mass of serpentine, and the milling time is 30 min. Milled nano-sized particles are dispersed in the water environment using the ultrasonic technology. The ultrasonic treatment frequency is 35 KHz, and the exposure time varies from 15 to 60 min.The study of the effect of the nanodisperse additive is performed using samples of fine-grained concretes made of white-color cement and quartz sand and hardened according to the regular procedure.If the concentration of serpentinite is equal to 0.01 % and the additive is obtained by the 15-minute exposure to ultrasonic dispersion, the 0.15 % content of the nanodisperse additive added to the fine concrete improves the compressive strength 1.5-fold, the bending strength — 1.3-fold, and improves the average density by 8%, while the water absorption rate goes down 1.7-fold. Resulting strength properties comply with the structure of cement identified with the help of an electronic microscope.

DOI: 10.22227/1997-0935.2013.3.155-162

References
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  3. Lukuttsova N.P., Pykin A.A., Chudakova O.A. Modifitsirovanie melkozernistogo betona mikro- i nanorazmernymi chastitsami shungita i dioksida titana [Modifying Fine-grained Concrete by Micro- and Nano-sized Particles of Schungite and Titanium Dioxide]. Vestnik BGTU im. V.G. Shukhova [Proceedings of Bryansk State Technical University named after V.G. Shukhov]. 2010, no. 2, pp. 67—70.
  4. Lukuttsova N.P. Nanomodifitsiruyushchie dobavki v beton [Nano-modifying Concrete Additives]. 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-grained Concrete]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2010, no. 4, vol. 2, pp. 415—418.
  6. Korolev E.V., Kuvshinova M.I. Parametry ul’trazvuka dlya gomogenizatsii dispersnykh sistem s nanorazmernymi modifikatorami [Parameters of the Ultrasound Used for Homogenization of Disperse Systems Having Nano-sized Modifiers]. Stroitel’nye materialy [Construction Materials]. 2010, no. 9, pp. 85—88.
  7. Lukuttsova N.P., Chudakova O.A., Khotchenkov P.V. Stroitel’nye rastvory s nanodispersnoy dobavkoy dioksida titana [Building Mortars Having a Nanodisperse Titanium Dioxide Additive]. Stroitel’stvo i rekonstruktsiya [Construction and Restructuring]. 2011, no. 1, pp. 66—69.
  8. Lukuttsova N.P., Akhremenko S.A., Pykin A.A., Degtyarev E.V. Analiz effektivnosti i ekologicheskoy bezopasnosti tekhnologii polucheniya nanomodifitsiruyushchey dobavki dlya betonov [Analysis of Efficiency and Safety of Technology of Recovery of a Nano-modifying Concrete Additive]. Biosfernosovmestimye goroda i poseleniya. Materialy nauch.-prakt. konf. [Towns and Settlements Compatible with the Biosphere. Works of the Scientific and Practical Conference]. Bryansk, BGITA Publ., 2012, pp. 82—88.

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