Abstract
High reactivity to lime in the conditions of autoclave processing of clay loam component of the Lebedinsky field, morillonite-hydro micaceous-quartz clay and opoka clay, which belong to the rocks of the incomplete stage of mineral formation. The peculiarity of these deposits is the presence of thermodynamically unstable compounds, such as hydro mica, mixed-layer formations, and x-ray amorphous phase formed as a result of processes of disintegration of the crystal structure of the source minerals due to weathering processes. Such rocks make up the majority of clay deposits and are widely distributed on the territory of the Russian Federation and in many states of the world. According to the results of these kinetic studies the features of phase formation in the system “CaO–SiO2–Al2O3–H2O” on the basis of clay component of rocks at the incomplete stage of mineral formation are found out, consisting in the intensification of the synthesis of gel-like and crystalline cementing compounds, such as low-base and high-base calcium hydro silicates, alumina-containing tobermorite and hydrogranates. It is shown that due to the polymineral composition of the clay component, the synthesis of different new formations proceeds in different time periods, which reduces the number of microdefects and accelerates the formation of a cementing substance of a rational microstructure. The clay component of rocks at the incomplete stage of mineral formation can be used as a component of the raw material mixture to produce effective silicate materials using energy-saving technology.
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This work was realized in the framework of the Program of flagship university development on the base of the Belgorod State Technological University named after V G Shukhov, using equipment of High Technology Center at BSTU named after V G Shukhov.
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Volodchenko, A.N., Nelyubova, V.V. (2021). Reactivity of the Clay Component of Rocks at the Incomplete Stage of Mineral Formation to Lime During Autoclave Processing. In: Klyuev, S., Lesovik, V., Vatin, N. (eds) Innovations and Technologies in Construction. BUILDINTECH BIT 2020. Lecture Notes in Civil Engineering, vol 95. Springer, Cham. https://doi.org/10.1007/978-3-030-54652-6_13
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DOI: https://doi.org/10.1007/978-3-030-54652-6_13
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