Gypsum-containing construction material compounds

Abstract

The invention relates to gypsum-containing construction material compounds, containing gypsum, if necessary one or more polymers, if necessary one or more aggregates, and if necessary one or more additives, characterized in that the gypsum-containing construction material compounds contain one or more types of cement and one or more types of pozzolana.

Description

technical field [0001] The present invention relates to gypsum-containing building material compounds and to their use, for example as tile adhesives or self-leveling compounds. Background technique [0002] Gypsum is an inorganic binder for building material compounds that is inexpensively available in large quantities and can be obtained in particular with much lower energy consumption than cement. The reason is that, in addition to naturally occurring gypsum, there is a considerable amount of gypsum obtained from flue gas desulfurization plants and there is worldwide interest in using this gypsum. Therefore, there is a strong desire to replace the energy intensive materials represented by cement with less energy intensive gypsum, and in doing so, the overall energy consumption of the construction part can be reduced and thus contribute to more environmentally friendly construction. A disadvantage of gypsum is its sensitivity to water, which causes buildings based on gyps...

AI Technical Summary

Problems solved by technology

[0005] A disadvantage of the abovementioned hydrophobizing agents is their in some cases not negligible hydrophilicity, which imposes restrictions on the water resistance of the corresponding construction products

Furthermore, building products formed from hydrophobized gypsum-containing building material compounds may not be satisfactory in terms of their mechanical strength in many cases, particularly after storage under damp or wet conditions or after freeze / thaw exposure. satisfy

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