RESEARCH OF BUILDING MATERIALS

THE CONSTRUCTION OF A COMPOSITION BASED ON MAGNESIA BINDER WITH PEAT

Vestnik MGSU 6/2017 Volume 12
  • Lebedeva Natalia Shamilievna - Ivanovo Fire Rescue Academy of State Firefighting Service of Ministry of Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters (IFRA SFS EMERCOM OF RUSSIA) Doctor of Chemical Sciences, Associate Professor, Professor of the Natural Sciences Department, Ivanovo Fire Rescue Academy of State Firefighting Service of Ministry of Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters (IFRA SFS EMERCOM OF RUSSIA), 33 Stroiteley prospect, 153040, Ivanovo, Russian Federation.
  • Nedayvodin Evgeniy Gennadievich - Ivanovo Fire Rescue Academy of State Firefighting Service of Ministry of Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters (IFRA SFS EMERCOM OF RUSSIA) Postgraduate Institute of Development, Ivanovo Fire Rescue Academy of State Firefighting Service of Ministry of Russian Federation for Civil Defense, Emergencies and Elimination of Consequences of Natural Disasters (IFRA SFS EMERCOM OF RUSSIA), 33 Stroiteley prospect, 153040, Ivanovo, Russian Federation.

Pages 642-646

Obtained building material based on magnesia binder with different content of peat (0 to 90 %), on a specially developed technique. As a binder used PMK 87, for mixing mixtures used aqueous solution of magnesium chloride and peat from the Ivanovo region. It were determined such physical and physico-mechanical properties of the investigated material as the compressive strength and the density. The strength characteristics of silicate bricks, ceramic bricks and the investigated material based on magnesia binder and peat was analyzed and compared. It is established that the samples of construction material with content of peat not exceeding 40 wt.% can be attributed to the materials of structural purpose by its compressive strength. Samples of the material with content of the peat 40% have a density 943,75 kg/m3, that provides good heat and sound insulation properties. It is revealed that the solution of the raw material mixture of magnesia binder, peat, the solution of bischofite is optimized to place, and the material gets at least 85% of its strength during 30 days.

DOI: 10.22227/1997-0935.2017.6.642-646

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PROSPECTS FOR REINFORCED AUTOCLAVED CELLULAR CONCRETE PRODUCTION TECHNOLOGY

Vestnik MGSU 6/2018 Volume 13
  • Lobodenko Evgeniy Aleksandrovich - «Build Fast Technologies» Deputy Executive Director for Technical Development and Control, «Build Fast Technologies», 32 Gorkogo st., Elektrostal, Moscow region, 144002, Russian Federation.
  • Mikhailova Elena Vladimirovna - «Evonik Industries AG» Technical Support Manager, «Evonik Industries AG», «Evonik Industries AG», bldg. 5, 14 Kozhevnicheskaya st., Moscow, 115114, Russian Federation.
  • Gusev Konstantin Viktorovich - «Polykompozit» Head of Technology and Quality Department, «Polykompozit», 3 Novatorov st., Pskov, 180000, Russian Federation.

Pages 740-747

Subject: the research was carried out in the field of production of reinforced cellular concrete of autoclave hardening (aerated concrete). As initial data, we present joint experimental studies on selection of reinforcing material performed by the enterprises producing aerated concrete (town of Electrostal) and composite reinforcement (city of Pskov). Research objectives: the research task is reduced to selection of the material alternative to metal reinforcement, which will reduce the technological cycle of manufacturing of reinforced cellular concrete products, facilitate the structure’s weight reduction and increase the life cycle of the product. Materials and methods: we consider the use of composite reinforcement made with application of various hardeners (e.g., anhydride and aliphatic amine) that influence the behavior of the composite in a medium of autoclaved cellular concrete (ACC) (alkaline reaction medium, conditions of increased heat resistance). Results: the results of the performed studies showed the existence of the possibility of reinforcing element replacement in the production of autoclaved cellular aerated concrete. Conclusions: on the basis of the tests carried out, it was decided to continue laboratory studies for heat resistance of composite reinforcement with the use of amine hardener in a medium of autoclaved aerated concrete (AAC). It is also noted that this work was carried out for the first time, being valuable in improving the existing production technology of reinforced aerated concrete.

DOI: 10.22227/1997-0935.2018.6.740-747

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