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Baking-free brick containing aluminum mud

A technology of unburned bricks and aluminum mud, which is applied in the field of construction materials, can solve problems such as lack of application, achieve the effects of reducing usage, improving stability, and reducing negative effects

Pending Publication Date: 2021-05-28
江苏瑜工环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are very few domestic cases of using aluminum mud to make building materials, and the application in the building materials industry is still lacking.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Preparation of unburned bricks from aluminum mud in a factory in Anhui

[0034] A 250-ton static brick machine is used to press 200x100x55mm Dutch bricks, and the average pressure is about 150-170kgf / cm 2 . The material formula takes each component according to the following weight: dry aluminum mud powder (1) 30, 425 cement 18, water-quenched slag powder 11.5, gravel below 10mm 40, curing agent 0.5;

[0035] Mix aluminum mud powder, fly ash, water-quenched slag powder and other powder materials first, then add water and stir, then add crushed stone aggregate and stir evenly, the water-powder ratio is 0.5. Stirring time should be moderate, and the principle is to prevent the mixture from forming large lumps. Curing at room temperature with a humidity of 65-95% for 28 days is ready.

[0036] The 28-day strength can exceed 25Mpa, and there is no structural damage after curing at room temperature for more than one year.

Embodiment 2

[0037] Example 2: Preparation of unburned bricks from aluminum mud in a factory in Anhui

[0038] A 250-ton static brick machine is used to press 200x100x55mm Dutch bricks, and the average pressure is about 150-170kgf / cm 2 . The material formula takes each component according to the following weight: dry aluminum mud powder (1) 30, 425 cement 18, water-quenched slag powder 11.5, gravel below 10mm 40, curing agent 0.5;

[0039] Mix aluminum mud powder, fly ash, water-quenched slag powder and other powder materials first, then add water and stir, then add crushed stone aggregate and stir evenly, the water-powder ratio is 0.5. Stirring time should be moderate, and the principle is to prevent the mixture from forming large lumps. Curing at room temperature with a humidity of 65-95% for 28 days is ready.

[0040]The strength can exceed 25MPa in 28 days. There is no structural damage after curing at room temperature for more than one year.

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Abstract

The invention discloses a baking-free brick containing aluminum mud, which is prepared from the following materials in percentage by weight: 15-25% of dry aluminum mud powder, 3-10% of fly ash, 5-20% of water-quenched slag powder, 5-15% of Portland cement and 20-50% of sandstone aggregate, and the aluminum mud is a solid waste filler. The sandstone aggregate can also be replaced with industrial and mining solid waste to serve as aggregate besides a common sandstone material, and the aggregate comprises but is not limited to tailing sand, barren rock and construction waste. The curing cementing material comprises but is not limited to fly ash, water-quenched slag powder and Portland cement. The invention relates to the technical field of construction materials, in particular to a baking-free brick containing aluminum mud. The expansion damage of the baking-free brick caused by water absorption of the aluminum mud is inhibited, and the stability of the product is improved. The characteristics of a volcanic ash material and dense filling of coarse and fine aggregate gradation are fully utilized, so that the use amount of cement is reduced, the cost is greatly reduced, the volume weight and strength of a product are increased, and the negative influence of light aluminum mud on the strength of the product is reduced.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to unburned bricks containing aluminum mud. Background technique [0002] Aluminum sludge is a kind of aluminum-containing sludge formed by oxidation, extrusion, production and other processes in the production process of aluminum products. Its typical source is aluminum alloy manufacturers. Aluminum alloy is a kind of non-ferrous metal structural material widely used in industry, and it is widely used in manufacturing and chemical industry. my country's aluminum production has continued to grow steadily over the years, and has now become the world's largest producer of aluminum profiles. According to incomplete statistics, the annual output of aluminum profiles in my country is about 12 million tons, and about 1.2 million tons of aluminum-containing sludge is produced per year. Large-scale aluminum profile factories can produce 25-30 tons of wet aluminum sludge after p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/04
CPCC04B18/0418C04B28/04C04B2201/50C04B18/08C04B18/142C04B14/06C04B18/12C04B18/16Y02W30/91
Inventor 朱天民刘岩
Owner 江苏瑜工环保科技有限公司
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