Full-body high-strength damp-proof gypsum block and preparation method

A gypsum block and shape technology, which is applied in the field of building wall materials, can solve the problems of insufficient hanging bearing capacity, poor moisture-proof performance, and poor uniformity of the wall, and achieve the effects of eliminating mildew, increasing strength, and improving brittleness

CN105198349AInactive Publication Date: 2015-12-30ZHANGZHOU ZHENGBA BUILDING MATERIAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-12-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a full-body high-strength damp-proof gypsum block and a preparation method. The full-body high-strength damp-proof gypsum block is prepared from the following materials in percentage by weight: 50-55% of building gypsum, 42-45% of water, 1-3% of cement, 0.2-1.5% of fiber, 0.2-1.0% of wood powder, 0.2-0.5% of a water reducing agent, 0.05-0.4% of a water proofing agent, and 0.005-0.02% of paint. According to the full-body high-strength damp-proof gypsum block prepared by adopting the uniform stirring technology, adding the waterproof component and strengthening the toughening component, the uniformity of the full body of a wall body material is improved, and the strength, the humidity resistance, the shock resistance, the permeation resistance, the crack resistance and the fireproof performance of the wall body material are improved; various performance indexes are superior to that of the conventional wall body material and the common gypsum block, cracking and permeation of the built wall body are avoided, and the engineering quality is ensured.
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Description

technical field

[0001] The invention relates to the field of building wall materials. In particular, it relates to a whole-body high-strength moisture-proof gypsum block and a preparation method thereof. Background technique

[0002] In recent years, the output of industrial by-product gypsum in my country has increased year by year, but the utilization of industrial by-product gypsum has not increased accordingly. Therefore, a large amount of industrial by-product gypsum can be piled up idle, causing serious waste of resources and environmental pollution, and has even become an important factor restricting the sustainable development of my country's phosphate fertilizer enterprises and coal-fired units.

[0003] Building materials have great potential in the utilization of industrial by-product gypsum. Among the gypsum products currently on the market, gypsum blocks contain the most gypsum components. Compared with traditional wall materials, gypsum blocks have the advan...

Examples

Embodiment 1

[0038] Embodiment 1: the preparation of gypsum block

[0039]Preparation of building gypsum: Gypsum powder with a purity of more than 90% is calcined. During the calcination process, according to the performance difference of gypsum powder and the performance sampling results of building gypsum products, the calcination temperature (145±10 degrees Celsius) is adjusted in time to ensure that the produced building gypsum The content of medium hemihydrate gypsum is high and the phase composition is stable; the performance parameters of the produced building gypsum reach 2 hours flexural strength ≥ 3.5MPa, compressive strength ≥ 10MPa, the initial setting time is about 5min, the final setting time is about 8min, and the standard thickness is 72± 2%.

[0040] Raw materials: see Table 1;

[0041] Table 1: Each composition and weight ratio table used in each embodiment 1

[0042] project

Example 1

Example 2

Example 3

plaster of construction

51.2％

...

Embodiment 2

[0047] Embodiment 2: the preparation of gypsum block

[0048] Raw materials: see Table 1; among them, the cement is P·O52.5R cement, the fiber is 10mm long glass fiber, the water reducing agent is naphthalene-based water reducing agent, the waterproofing agent is methyl silicone resin, and the pigment is iron oxide red.

[0049] Preparation method: with embodiment 1. Among them, the mold adopts a hollow block mold with a thickness specification of 150mm. Blocks are quickly dried at 45 degrees Celsius for two days.

[0050] Structure: such as image 3 As shown, the block is a hollow block with a thickness of 150mm. The right and upper sides of the block are provided with tenons, and the left and lower sides are provided with a tenon and groove structure. environment.

[0051] Effect verification: The test results are shown in Table 2.

Embodiment 3

[0052] Embodiment 3: the preparation of gypsum block

[0053] Raw materials: see Table 1; among them, the cement is P·C42.5R cement, the fiber is paper pulp, the water reducing agent is naphthalene-based water reducing agent, the waterproofing agent is methyl hydrogen silicone oil emulsion, and the pigment is iron oxide red.

[0054] Preparation method: with embodiment 1. Among them, the mold adopts a hollow block mold with a thickness specification of 200mm. Blocks are quickly dried at 45 degrees Celsius for two days.

[0055] Structure: such as Figure 4 As shown, the block is a hollow block with a thickness of 200mm. The right and upper sides of the block are provided with tenons, and the left and lower sides are provided with tenon and groove structures. At the same time, there are double-row hole structures, which have excellent moisture-proof and heat-preserving effects. Can be used on exterior walls.

[0056] Effect verification: The test results are shown in Table ...