Fibre concrete havinga nanodisperse silica additive

Vestnik MGSU 3/2013
  • Matveeva Elena Gennad’evna - Bryansk State Academy of Engineering and Technology (BGITA) Candidate of Technical Sciences, assistant lecturer, 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 .
  • Koroleva Elena Leonidovna - Bryansk State Academy of Engineering Technology (BSAET) Candidate of Technical Sciences, Associate Professor, Department of Production of Building Structures, Bryansk State Academy of Engineering Technology (BSAET), 3 prospekt St. Dimitrova, 241037, Bryansk, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 140-145

The objective of the project described in this article was to design the fiber concrete having an optimized structure and high strength characteristics. In the course of the project development, the fibre concrete was modified by the nanodisperse silica additive. As a result, the authors designed several modified fibre concrete compositions having optimal physical and mechanical properties. Electronic microscope Quanta 200 3D was used to study the microstructure of samples. Diffractometer ARL X’TRA was used to perform the X-ray analysis of samples. Selection of the optimal composition of the concrete was performed using the orthogonal experimental design technique. The nanodisperse silica additive was synthesized using method of chemical polycondensation followed by subsequent stabilization of acetate. This super-plasticizer improves the density and strength properties of the composite. Experimental and statistical models were generated as regression equations to determine the optimal composition of the fibre concrete.

DOI: 10.22227/1997-0935.2013.3.140-145

  1. Perfilov V.A., Atkina V.A., Kusmartseva O.A. Fibrobetony s vysokodispersnymi voloknistymi napolnitelyami [Fibre Concretes Having Fine-grained Fibre Fillers]. “Maloetazhnoe stroitel’stvo” v ramkakh Natsional’nogo proekta “Dostupnoe i komfortnoe zhil’e grazhdanam Rossii”; tekhnologii i materialy, problemy i perspektivy razvitiya v Volgogradskoy oblasti. Mezhdunar. nauch.-prakt. konf. [Low-rise Construction within the Framework of Affordable and Comfortable Housing for Russian Citizens National Project. Technologies and Materials, Problems and Prospects for Development of the Volgograd Region. An International Scientific and Practical Conference]. Volgograd, VolgGASU Publ., 2009, pp. 89—91.
  2. Rabinovich F.N. Dispersno-armirovannye betony [Fibre-reinforced Concretes]. Moscow, Stroyizdat Publ., 1989, 176 p.
  3. Rabinovich F.N. O nekotorykh osobennostyakh raboty kompozitov na osnove dispersno-armirovannykh betonov [Particular Behaviour of the Composites Containing Fibre-reinforced Concretes]. Beton i zhelezobeton [Concrete and Reinforced Concrete]. 1998, no. 6, pp. 19—23.
  4. Bischoff P.H., Perry S.H. Compressive Behaviour of Concrete at High Strain Rates. Materials and Structures. 1991, vol. 24, pp. 425—450.
  5. Malvar L.J., Crawford J.E. Dynamic Increase Factors for Concrete. Twenty-Eighth DDESB Seminar. Orlando, FL, August 1998.
  6. Akopov F., Bragov A.M., Demenko P., Kruszka L., Lomunov A.K., Mineev V., Sergeichev L.V. Static and Dynamic Response of Ceramics and Zirconium Alumina Concrete Materials. Journal de Physique IV. France, 2003, vol. 110, pp. 225—230.
  7. Klepaczko J.R. On a Very High Rate Sensitivity of Concrete Failure at High Loading Rates and Impact. Proc. Int. Symp. Brittle Matrix Composites 7, Warsaw, 2003, pp. 1—27.
  8. Chujie Jiao, Wei Sun, Shi Huan, Guoping Jiang. Behavior of Steel Fiber-reinforced High-strength Concrete at Medium Strain Rate. Front. Archit. Civ. Eng. China, 2009, vol. 3, no. 2, pp. 131—136.
  9. Kolsky H. An Investigation of the Mechanical Properties of Material at Very High Rates of Loading. Proc. Phys. Soc. London, 1949, vol. 62B, pp. 676—700.
  10. Campbell J.D., Dowling A.R. The Behaviour of Materials Subjected to Dynamic Incremental Shear Loading. J. Mech. Phys. Solids. 1970, vol.18, pp. 43—63.
  11. Dharan C.K.H., Hauser F.E. Determination of Stress-strain Characteristics at Very High Strain Rates. Exp. Mech. 1970, vol.10, pp. 370—376.
  12. Nicholas T. Tensile Testing of Materials at High Rates of Strain. Exp. Mech. 1981, vol. 21, no. 5, pp. 177—195.


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