Determination of rational parameters for heat treatment of concrete mixture based on a hollow aluminosilicate microsphere

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.

Features of obtaining composite material from hydrophobic clay with antimicrobic properties

“…In the process of carrying out the work, it was necessary to prepare the first halloysite, then silvered clay and after the silvered organohalloysite Halloysite deposits in Kazakhstan are located in two places [ [6], [7], [8], [9], [10], [11], [12], [13], [14], [15], [16], [17]], these are the halloysite of the Beloye Glinishche deposit near Karaganda and the Aizin-Tamara halloysite deposit in the Akmola region. The choice of halloysite from the Beloye Glinishche deposit is justified by the fineness of the mineral and the basic composition, which is represented by halloysite with chemical formula Al4[Si4O10][OH]84H2O or Al2O32SiO24H2O.…”

“…Currently, Kazakhstan's clays have been sufficiently studied by scientists from foreign and neighbouring countries, but even then they do not have a wide range of applications in production facilities within Kazakhstan, as they are transported from foreign marketplaces. As a result of the work, there will be results that will determine the scope of application of various clays in Kazakhstan [ [2], [3], [4], [5], [6], [7], [8], [9], [10]].…”

Physical and mechanical properties of ceramic brick using rice husk and ash of thermal power plants

“…Instead of traditional reinforcement, the researchers in [9] used composite reinforcement, which increases the durability of structures. In terms of energy efficiency, the works [10,11] are also interesting. The work [10] determined the rational parameters for the heat treatment of a concrete mixture based on a hollow aluminosilicate microsphere.…”

“…In terms of energy efficiency, the works [10,11] are also interesting. The work [10] determined the rational parameters for the heat treatment of a concrete mixture based on a hollow aluminosilicate microsphere. The authors of [11] considered the use of construction waste to produce self-compacting concrete.…”

“…Summarizing the literature review [1][2][3][4][5][6][7][8][9][10][11][12][13], it can be stated that the development of resource-saving and energy-efficient building materials that reduce the thermal conductivity of building structures [12] is an urgent task.…”