The Composition and Properties of Autoclaved Gas Concrete with Amorphized Raw Modifiers

Abstract

The article presents the research devoted to the effect of mineral modifiers obtained by mechanical activation of amorphized raw materials in water environment with obtaining a stable suspension on the gas concrete properties of autoclaved hardening. It was shown that the introduction of a mineral additive provides the intensification of the processes of porization of the gas concrete mixture, which ensures the formation of a heteropore structure of the finished composite. It was justified that the mineral modifier from amorphized rocks, regardless of the composition in the pre-autoclave period, acts as a structure-forming component causing the reduction of porous processes with the formation of a system with an improved micro-and macrostructure. The structural features of cellular products of autoclaved hardening, reasoned by the presence of a mineral modifier from amorphized rocks, were shown. With the introduction of the active additive, the increase in the pore size occurs during the process of condensation of the interpore partition. It provides the increase in the strength of products with the improvement of their heat-insulating characteristics.

Effect of an Aluminosilicate Disperse Additive on Behaviors of Autoclave Silicate Materials

“…Mechanical activation has been described extensively in mineral processing literature, e.g., by Kühnel and Van der Gaast [48], He et al [49], Tromans and Meech [50] and Chaikina and Kryukova [51], and is considered a very effective means to enhance (hydrous) dissolution and reactivity. In addition, the effectiveness of this approach in obtaining highly active dispersed additives has been substantiated earlier by the research of the group of authors [52][53][54][55].…”