RESEARCH OF BUILDING MATERIALS

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

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