Physical and chemical bases, structural and technological models of constructional thermal insulating lightweight concrete creating

Abstract

Research object is constructional and thermal-insulating lightweight concrete (STILC) with a modified matrix in the direction improving of thermotechnical quality and durability indicators of such concrete, produced with use of porous aggregates of various petrogenesis. Motivation: the development relevance of STILC new modifications with high performance of thermotechnical quality and durability is determined by the fact that the STILC usage in the enclosing structures of buildings will significantly improve their thermal insulation function, operational reliability. Research method: the developed physical and chemical bases, structural and technological models of the modified matrix of STILC are used in researches. Research results: physical and chemical bases, structural and technological models for creating of STILC with high indicators of thermotechnical quality and weather resistance; technologies for manufacturing STILC with rational usage of technogenic formations recycling products; results of determination of thermophysical characteristics, indicators of weather resistance and other indicators of STILC operational quality. Conclusion: fundamentally new modifications of STILC with high indicators of thermal quality and weather resistance, and the main provisions of their manufacturing technology also have been developed. Based on the results of STILC samples testing, the thermophysical and mechanical properties, as well as weather resistance indicators, were determined for use in the calculations and design of enclosing structures with high thermal protection function and reliability in operation.

Influence of Recipe Factors on the Structure and Properties of Non-Autoclaved Aerated Concrete of Increased Strength

“…In particular, not only the technological process of obtaining aerated concrete is complex, but also the technological line itself, which often consists of more expensive equipment. In this regard, the most high-quality, but at the same time the most expensive, type of cellular concrete is the so-called gas silicate or autoclaved aerated concrete [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17].…”