RESEARCH OF BUILDING MATERIALS

STUDY OF CORROSION RESISTANCE OF MODIFIED CONCRETEIN THE SEWAGE MEDIUM

Vestnik MGSU 2/2013
  • 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 .
  • Matveeva Elena Gennad’evna - Bryansk State Academy of Engineering Technology (BSAET) Candidate of Technical Sciences, assistant lecturer, 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 .
  • Naumenko Ol’ga Viktorovna - Bryansk State Academy of Engineering Technology (BSAET) student, 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 .
  • Nyrikova Tat’yana Nikolaevna - Bryansk State Academy of Engineering Technology (BSAET) student, 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 101-107

The objective of the research project was to design multi-component concrete with an optimized pore structure designated for sewage water treatment facilities. It was followed by the study of their stability in aggressive environments. Measurement of mesopores and macropores with diameters of 0.0055 to 360 mcm was taken using AutoPore IV 9500 porosimeter. X-ray analysis of samples was performed using diffractometer ARL X’TRA produced by Thermo Scientific (Switzerland). Modified 28-day concrete cubes were exposed to aggressive environments for 1 year at low (+4 ± 2 °C) and high temperatures (+20 ± 2 °C) to identify their linear deformation characteristics. Compressive strength of samples was tested upon completion of each three-month period.The authors have found out that degradation of concrete samples in the corrosive environment of waste waters accompanied by generation of thaumasite is less intensive than that in the waste waters that have ettringite generated. Thus, the authors have discovered that the lower the temperature of the aggressive environment of the waste water, the more intensive the formation of ettringite that causes destruction of the concrete. Optimization of the concrete structure is attained through the optimization of the concrete composition. Application of fine-grained silica causes generation of concrete that is highly resistant to the aggressive effects of sulfates and chlorides.

DOI: 10.22227/1997-0935.2013.2.101-107

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