Krylov Y. Influence of Solid Component Modification on the Properties of Non-Autoclaved Aerated Concrete

Object of research – the process of regularity of the influence of the solid component and its modification on the basic properties of non-autoclaved aerated concrete; goal – improving the basic properties of aerated concrete by disclosing and implementing the laws that accompany the process of modification of the solid component of non-autoclaved aerated concrete; мethods determination of physical and mechanical properties of aerated concrete and mortar component was carried out according to standard methods in accordance with current regulations. The water consumption of the solution component was estimated by the diameter of the solution flow by the Suttard viscometer. To solve the problems of prescription-technological factors on the physical and mechanical properties, optimization of physical and technical properties of aerated concrete in terms of composition and technological parameters, mathematical methods of experiment planning were used. To study the polymorphic transformations that occur in non-autoclaved aerated concrete with a modified solid component used X-ray phase analysis (X-ray diffraction); results – theoretically substantiated and experimentally confirmed the possibility of obtaining non-autoclaved aerated concrete grade D500 and concrete grade strength C2 with a modified solid component, modification transformations of which are carried out due to the complex action of lime-carbonate additive containing calcite 8%, portlandite 4% and plasticizer additive 6% and alkaline action of 0.8% by weight of cement; mathematical models of properties of non-autoclaved aerated concrete with a modified solid component were obtained, which allowed to choose technological methods and modes of aerated concrete production with the required properties; based on the obtained mathematical models, the quantitative nature of the influence of the structure of non-autoclaved aerated concrete on its properties is determined through the intensity index and a certain relationship between the equipotential field strength of the non-autoclaved aerated concrete structure and its strength is established; developed a draft technological regulation for the manufacture of non-autoclaved aerated concrete with a modified solid component; the basic technological scheme of production of products from cellular concrete on cutting technology is developed, methods of technical control of production process are offered; methods – at the production facilities of "NEW BUILDING MATERIALS" LLC, Obukhiv.