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Method for preparing moisture-resisting gypsum block

A technology of gypsum blocks and building gypsum, which is applied in the direction of building components, sustainable waste treatment, solid waste management, etc., can solve the problems of reduced water absorption strength, difficulty in acceptance by building units, and water repellency, so as to reduce water absorption capacity and ensure engineering Quality, effect of increasing bulk density

Inactive Publication Date: 2006-02-15
BEIJING BEIMAXINGHE SCI TECH DEV CENT
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AI Technical Summary

Problems solved by technology

However, when building walls, the surface of gypsum products treated with moisture-proof treatment is hydrophobic and does not absorb water-based adhesives and plastering mortar, which makes construction difficult and affects construction quality.
Moreover, only the surface of this moisture-proof gypsum block is moisture-proof, and once damaged, the interior is exposed and there is still a large amount of water-absorbing strength reduction problems
In addition, the cost of this moisture-proof treatment is also relatively high, making it difficult for construction units to accept

Method used

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Examples

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Embodiment Construction

[0024] The concrete embodiment that realizes the moisture-proof gypsum block of the present invention is: take building gypsum and blast furnace slag as main raw materials, and mix lime and aluminum sulfate as activator, and batching is prepared by following proportion (weight %): building gypsum 63% ; Blast furnace slag 25%; Lime 10%; Aluminum sulfate 2%; The ratio of water to material is 0.8. The raw materials are mixed with water, poured and molded, and after demoulding and curing, the moisture-proof gypsum blocks that are easy to absorb with water-based adhesives and plastering mortars are made.

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Abstract

The present invention discloses a method for preparing damp-proofing gypsum block. Said method uses building gypsum and blast-furnace slag (ground fly ash and bauxitic clay can be substituted for them) as main raw material, and adopts the following steps: adding lime or carbide slag and aluminium sulfate or alunite as exciting agent, adding water and stirring them, pouring and forming, demoulding and drying so as to obtain the invented damp-proofing gypsum block whose water-absorbing rate is 37%.

Description

Technical field [0001] The invention relates to a method for preparing a moisture-proof gypsum block, in particular to a method for preparing a moisture-proof gypsum block used in non-load-bearing partition walls in buildings. Background technique [0002] The current implementation standard of gypsum blocks in my country is JC / T698-1998. The overall dimensions: length 600mm or 666mm, width 500mm, thickness 80-150mm, and the edges have convex tenons and concave grooves, and a small amount of construction adhesive can be used It is directly built into a non-load-bearing partition wall in a building. [0003] The traditional production process of gypsum blocks is based on building gypsum as the main raw material, which is made into gypsum block products after adding water and stirring, pouring and molding, and demoulding and drying. The production process is relatively simple. It can be produced in large quantities by means of mechanized molding and continuous drying, or in sm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B18/14C04B18/04C04B22/14E04C1/00E04B1/64C04B28/02
CPCC04B2111/27C04B28/14C04B28/021Y02W30/91C04B14/303C04B18/08C04B22/064C04B22/148C04B22/0006C04B18/141
Inventor 徐尔昌张平
Owner BEIJING BEIMAXINGHE SCI TECH DEV CENT
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