OPTIMIZATION OF THE STRUCTURE OF SILICATE POROUS CONCRETEte porous concrete

Abstract

The modern construction industry actively uses silicate aerated concrete, or gas concrete, due to its numerous advantages such as high strength, light weight, fire resistance, and ecological purity. However, there is a challenge in achieving consistent quality of this material, especially in the production of lower-density variants.

Analysis of current research highlights the need to improve the production technologies of autoclaved aerated concretes, as demands for energy efficiency and optimization of raw material resources are increasing. Key factors affecting the structure of gas concrete include the ratios of components and mixing conditions.

The article develops a computer modeling methodology that allows for the analysis of the influence of various factors on the micro- and macrostructure of gas concrete. The impact of binding materials and temperature regimes has been investigated. The resulting mathematical models contribute to the optimization of the rheological and thermal characteristics of the mixture.

Experimental data confirm the possibility of achieving high compressive strength indicators with optimal dosages of components such as Portland cement and semi-hydrated gypsum. The results open new perspectives for further research in the field of energy-saving technologies in construction.

The response surfaces of the target functions – the diameter of the mixture spread according to Suttard and the temperature of the mixture during pouring for cellular concrete grade D500 in the planes of the impact parameters – are constructed, which allows for a clear illustration of the indicated dependencies.