Publikacje

Abstract:

The construction industry relies on the production of building materials, which are
created as a result of particular actions of binding materials widely used in construction, and
directly condition the quality of life of a society. Following these thesis, one should create
possibilities of conscious choice and use of building materials not only among scientists and
constructors, but among the whole society. Two types of additives are used in building
materials: additives with a crystalline structure (SiO2) and additives with an amorphous
structure (fly ash), which affects the properties and durability of materials. In the last decade
industry is also moved on the fight against global warming and overproduction of materials. In
May 2019, the level of CO2 concentration in the atmosphere exceeded 415ppm, which was the
highest result in the last 50 years. Overproduction is, in turn, associated with the excessive use
of natural resources (SiO2) and since 2010 there has been talk of the “sand deficit”. One way to
combat overproduction is to use and promote recycling to avoid excess waste. The article
describes the method of managing recycled glass sand in autoclaved materials and checking
their thermal properties. This study describes the relationship between the physical (thermal
isolation), mechanical and microstructural properties of autoclaved materials which undergone
hydrothermal treatment and consist of lime (7%) and were modified through the introduction
of glass components (up to 90%). For this modification, a certain amount of crystalline SiO2
was replaced with amorphous glass sand. Hydrated calcium silicates are formed in building
materials (CaO-SiO2-H2O).

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Thermal insulation of autoclaved materials