High-strength water-resistant plastering gypsum and producing method thereof

Abstract

The invention relates to a high-strength water-proof gypsum plaster and a production method thereof. The inventive high-strength water-proof gypsum plaster is made from the following materials in weight proportions: 10-99% of gypsum-based composite binding agent, 0-90% of aggregates, 0.08-4% of additives and 0-16.1% of adsorbent. The production method comprises the following steps: weighing raw materials at the given ratio, drying the aggregates, mixing all raw materials, and packaging. The inventive high-strength water-proof gypsum plaster has high strength and good water resistance; can be made from chemical gypsum materials without needing calcination, such as desulfurized gypsum, phosphogypsum, fluorgypsum and citric acid gypsum; and has the advantages of low production cost, energy conservation, discharge reduction and environmental friendliness.

Description

technical field [0001] The invention relates to a high-strength water-resistant gypsum-based composite plastering material and a production method thereof, in particular to a high-strength water-resistant plastering gypsum used for plastering the interior walls, exterior walls and roof panels of buildings and its production method Background technique [0002] The stucco gypsum has the characteristics of firm bonding with the base material, fast setting and hardening, no shrinkage during setting and hardening, convenient construction and high work efficiency, which can avoid the defects of cracking, hollowing and falling off of the traditional cement mortar plastering layer, and is especially suitable for adding Plastering of air concrete walls and shear walls. In foreign countries, the use of plaster plaster has been quite common. For example, in Germany, more than 70% of the plastering materials are plaster plaster, and plaster plaster is 50% of the total amount of gypsum ...

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Problems solved by technology

[0004] Furthermore, my country currently produces 20 million tons of industrial by-product phosphogypsum every year, and it is growing at a rate of 15% per year; it produces 4 million tons of desulfurized gypsum every year, and more than 20 million tons of desulfurized gypsum will be added every year after 2010; Moreover, there are also a large amount of fluorogypsum, lemon gypsum, borogypsum, titanium gypsum, salt gypsum, etc. , titanium gypsum and salt gypsum are all dihydrate gypsum), these industrial by-products gypsum are also called chemical gypsum, only a small amount is used for cement additives, and most of them are in a stacked state, which not only takes up a lot of land, but also pollutes the environment and groundwater resources

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