Abstract
The research on determining rational parameters of heat treatment of a concrete mixture based on hollow aluminosilicate microspheres has defined the features of the intensifying action on the structural concrete mixture by low-pressure steam with optimum heat and mass transfer. Optimum values of temperature, humidity and speed of the medium have been identified. The obtained heat treatment parameters are subject to general regularities of structures for the formation of hydraulic bindings and are in accordance with production conditions, thus providing possibilities for their adaptation into production. The mechanisms for determining the strength of concrete stone according to the structural and thermal effectiveness of the active medium have been defined. Thanks to the strength-building mechanisms obtained, it is possible to reduce the thermal destruction capacity of the system while reducing the process heat consumption. It is confirmed that the main direction in reducing the destructive capacity is determined by the mass flow of moisture, which has the greatest heat capacity and the least thermal conductivity at the initial stages. The invention relates to periods of temperature rise and isothermal heating without impairing the mechanical properties of concrete. It is shown that the real duration excludes high-temperature destruction processes, thereby increasing the mechanical strength of concrete and reducing the overall energy consumption. Thus, there is a reason to argue that it is possible to produce strong and light concrete products under accelerated structure formation and new technologies for heat treatment of concrete based on lightweight fillers with reduced heat consumption.
Highlights
The tendency to reduce the density and weight of structures in the context of rapid construction requires the creation of conditions for the production of lighter and simultaneously strong structures and materials in a short period of time.There is no doubt that lightweight concretes formed from mineral binders and ultra-light microfillers, including aluminosilicate microspheres, can solve these problems by creating low-density concrete and heat conductivity while maintaining their mechanical characteristics.many modern micro- and nano-fillers exhibit hydraulic activity under special conditions
The current modes for the heat treatment of similar concrete and concrete based on a hollow aluminosilicate microsphere can only provide the required strength under conditions of increased heat and energy consumption, which is contrary to the main trends of construction production, which is oriented on high technology of products with low heat and material consumption
This shows that the studies carried out within the framework of optimization of heat treatment modes of concrete based on hollow aluminosilicate microspheres to reduce heat and energy consumption, and energy intensity, are relevant
Summary
The tendency to reduce the density and weight of structures in the context of rapid construction requires the creation of conditions for the production of lighter and simultaneously strong structures and materials in a short period of time. The current modes for the heat treatment of similar concrete and concrete based on a hollow aluminosilicate microsphere can only provide the required strength under conditions of increased heat and energy consumption, which is contrary to the main trends of construction production, which is oriented on high technology of products with low heat and material consumption. This shows that the studies carried out within the framework of optimization of heat treatment modes of concrete based on hollow aluminosilicate microspheres to reduce heat and energy consumption, and energy intensity, are relevant
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