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Gypsum-containing construction material compounds

A technology of building materials, compounds, applied in the field of tile adhesives or self-leveling compounds, which can solve the problems of unsatisfactory mechanical strength, non-negligible hydrophilicity, limitations, etc.

Active Publication Date: 2014-03-19
WACKER CHEM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Gypsum-containing construction material compounds
  • Gypsum-containing construction material compounds
  • Gypsum-containing construction material compounds

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0051] Recipe for tile adhesive:

[0052] Hard plaster in Paris HF1

[0053]

[0054] (polyvinyl alcohol stabilized water-redispersible dispersion powder based on a copolymer of vinyl acetate and ethylene)

[0055] Mixing water: Add 280ml water to 1000g dry mix.

example 2

[0057] Recipe for floor filling compound:

[0058] Paris HF1 Hard Stucco

[0059]

[0060] (polyvinyl alcohol stabilized water-redispersible dispersion powder based on a copolymer of vinyl acetate and ethylene)

[0061] Mixing water: Add 280ml water to 1000g dry mix.

Embodiment 7

[0106] Similar to Example 1, the only difference is that the dry mixture is additionally mixed with 3 parts by weight of powdered potassium methyl silicate (silicate from Preparation Example 2 of WO2012 / 022544: the molar ratio of potassium to silicon = 0.64) mixed.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B28/16C04B28/02C04B20/10
CPCC04B2111/0062C04B28/144C04B28/02C04B28/145C04B2111/72C04B28/16C04B2111/00672C04B2111/29C04B20/10C04B2111/62C04B2111/27C04B2111/00637C04B2111/00517C04B28/14Y02W30/91C04B7/02C04B14/26C04B18/146C04B24/2641C04B24/42C04B14/10C04B14/14C04B20/1051C04B24/2676C04B14/08C04B14/20C04B22/143C04B24/2611C04B14/042C04B18/08C04B22/064C04B22/145C04B24/2682C04B14/322C04B18/141C04B24/2623C04B14/22C04B18/22C04B14/06C04B14/066C04B14/106C04B14/28C04B24/223C04B24/383C04B2103/12C04B2103/22C04B2103/50C04B24/00
Inventor 沃尔夫冈·哈根彼得·弗里策
Owner WACKER CHEM GMBH
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