Effective building mixtures based on hemihydrate plaster and highly dispersed mineral fillers

Abstract

The work was aimed at developing a gypsum dry construction mixture with highly dispersed fillers based on industrial waste for interior decoration. The problem of creating effective gypsum materials was solved by improving the structural, physical and mechanical properties of gypsum stone by modifying it with highly dispersed fillers. The effect was achieved by creating a multicomponent composition based on hemihydrate plaster. The proposed work is aimed at developing a gypsum dry construction mixture with highly dispersed fillers for interior decoration of buildings. Dry construction mixes based on gypsum binder are one of the most relevant materials on the building supplies market. They meet the most important aspects from the standpoint of efficiency and safety - environmental, fire and others. However, the problem of ensuring high performance properties requires a solution. In this work, the problem is solved by improving the structural, physical and mechanical properties of gypsum stone by modifying it with highly dispersed fillers. The effect was achieved by creating a multicomponent composition based on plaster. Additionally, the problem of environmental protection is being solved, since secondary products were used as fillers - waste from the production of basalt products and thermal power plants. They differ in the required grain and chemical composition. Acid ash was used. Basalt and acid ash particles have a mechanical effect on the structure of the gypsum stone and influence the processes of structure formation of the gypsum stone. They change the morphology of gypsum crystals. This improves the mechanical strength, the average density of the modified gypsum stone and other physical and mechanical characteristics.

Faience Waste for the Production of Wall Products

“…The economic effect in the production of non-fired gypsum pressed bricks is ensured by reducing energy consumption for mining [28], transportation, grinding and firing of raw materials, as well as for drying finished products.…”

The Use of Aluminosilicate Ash Microspheres from Waste Ash and Slag Mixtures in Gypsum-Lime Compositions

“…In [ 32 ], the effect of added plastic polycarbonate waste on the mechanical and environmental properties of composites with a gypsum matrix was analyzed: the conducted studies proved the effectiveness of this approach. In the case of gypsum compositions, the use of waste is possible not only as modifying additives, but also as the main component [ 34 , 35 ].…”

Influence of bed ash on the rheology and properties of gypsum building mixtures

“…Microdispersed additives, nanomodifiers or their complexes allow achieving the required indicators [9,10,11]. As microdisperse modifiers without cement binders, industrial wastes are used -industrial dusts [12], sawing wastes, ash [13], ground granulated slags. Active mineral microadditives have an advantage, which can participate in physicochemical transformations and improve the properties of binders [9,10,13].…”