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Gypsum building block manufactured by chemical gypsum and industrial waste and manufacture method thereof

A technology of gypsum block and industrial waste, which is applied in the field of gypsum block for non-load-bearing internal partition walls of buildings and its preparation, which can solve problems such as expansion and damage, and achieve the effects of enhancing water resistance, overcoming poor water resistance, and improving strength

Inactive Publication Date: 2007-02-28
武汉冶金建筑研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the application number of U.S. National Gypsum Company is 988052547, and the patent application specification page 1, paragraph 2, titled "Gypsum-containing gelling cement and composition and material prepared therefrom" says like this: "Trying to use Mixing of Portland cement and calcium sulfate hemihydrate to improve the water resistance of gypsum boards has had limited success because such mixtures lead to the formation of wollastonite which causes the gypsum / portland cement product to expand and thus causing its damage

Method used

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  • Gypsum building block manufactured by chemical gypsum and industrial waste and manufacture method thereof
  • Gypsum building block manufactured by chemical gypsum and industrial waste and manufacture method thereof
  • Gypsum building block manufactured by chemical gypsum and industrial waste and manufacture method thereof

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Embodiment Construction

[0033] Specific embodiments of the present invention will be further described in detail below. The applicant believes that the improvement of the performance of gypsum blocks should also be made by studying the mechanism and law of setting and hardening of gypsum itself. On the basis of fully understanding and understanding the above-mentioned mechanism and law, the applicant proposes another idea: to Gypsum is mainly used to produce gypsum blocks by compounding various inorganic mineral components. From the perspective of the hydration products of the product, there are not only air-hardening hydration products dihydrate gypsum, but also hydraulic hydration products such as ettringite, calcium silicate hydrate, etc. The resulting hydration product calcium silicate gel fills the gaps between the dihydrate gypsum crystals, so that the microstructure of the product is denser and the physical properties are optimized. The advantages of the gypsum material are preserved, and the...

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Abstract

The invention discloses a plaster block and preparing method through chemical plaster and industrial waste material, which is characterized by the following: the chemical plaster is allocated by anhydrous gypsum with different hydrating speeds and hydrated crystal structures at 2: 1-3: 1 into semi-plaster through frying; the rate of cement in the hydrating course and anhydrous gypsum rate in the micro-bulking course is 1:12-1:3; the air-entrainer is added in the raw material, which generates dispersing micro-bubble without light-weight aggregate.

Description

technical field [0001] The invention relates to a gypsum block for a non-load-bearing internal partition wall of a building and a preparation method thereof, in particular to a gypsum block with strong water resistance and good sound insulation made of chemical gypsum and industrial waste and a preparation method thereof. Background technique [0002] Most traditional gypsum blocks use natural dihydrate gypsum (or chemical dihydrate gypsum) to make hemihydrate gypsum, add a certain amount of lightweight aggregate (some also add a small amount of fly ash and other admixtures), add water and stir, Formed by pouring. Although its production process is simple, the product's flexural and compressive strength can meet the requirements of the specification, and it also has certain thermal insulation and thermal insulation building performance, but due to the high cost, especially the poor water resistance, it is widely used in toilets, kitchens and other parts. Additional waterpro...

Claims

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Application Information

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IPC IPC(8): C04B28/16C04B18/04C04B24/34
CPCY02W30/91
Inventor 朱群洲曾明欧阳贞祥蔡雪军李军
Owner 武汉冶金建筑研究院
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