Influence of artificial filler made of calcium hydrosilicates of various basicity on the performance characteristics of non-autoclave hardened silicate materials

Author:

Volodchenko A A

Abstract

Abstract The work established the nature of the effect of an artificial filler made of calcium hydrosilicates of various basicity on the physical and mechanical properties of non-autoclave silicate composites based on unconventional aluminosilicate raw materials, represented by clay rocks of an unfinished stage of mineral formation. It is determined that the optimal content of an artificial filler of the composition CaO:SiO2 is 1:1 in the raw mixture is in the range of 1–3 wt.%. The available interval makes it possible to vary the composition of the initial mixture and obtain products with the required properties, which is especially important when the material composition of the feedstock fluctuates, as well as in case of violation of the production technology. The rational content of the artificial filler of the composition CaO:SiO2 = 2:1 is 1 wt. %. It is shown that the addition of an artificial filler promotes the formation of a cementitious substance from neoplasms of a higher degree of crystallization, which contributes to an increase in the strength and water resistance of the material. Mathematical models are proposed for the selection and optimization of the compositions of non-autoclave silicate materials based on unconventional aluminosilicate raw materials and modified with an artificial filler represented by calcium hydrosilicates of various basicity to obtain materials with a compressive strength of 18-23 MPa with an average density of finished products of 1750-2000 kg/m3.

Publisher

IOP Publishing

Subject

General Medicine

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