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Concrete block and preparation method thereof

A technology of concrete blocks and cement, applied in the field of concrete blocks, can solve problems such as inability to achieve

Inactive Publication Date: 2012-09-19
胡伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technology can reduce the weight of concrete blocks to a certain extent, it still cannot meet the requirements of the national standard.

Method used

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  • Concrete block and preparation method thereof
  • Concrete block and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0022] A concrete block consisting of water, fly ash, sand, cement and foam. The ratio of water, fly ash, sand and cement is 1-2:1-2:1-2:1 by weight. 2. The foam occupies 8%-15% of the total volume of water, fly ash, sand, and cement, and the made concrete block has a hollow structure.

[0023] The foam is a foam obtained by adding water to a foaming agent to expand its volume by 50-100 times. The foaming agent can be any one of the prior art, such as the foaming agent produced by Huatai Company, or Segosol (TRICOSAL) S-45 foaming agent can achieve the purpose of the present invention.

[0024] The sand is preferably obtained through a 400-500 mesh sieve, and the fly ash is obtained through a 800-1200 mesh sieve, and the cement type is No. 325 cement. The made concrete blocks have high strength and good adhesion.

[0025] Its preparation process is as follows. Add water according to the above ratio into the cement, mix well, then add sand according to the above ratio, stir well, add...

Embodiment 2

[0027] The difference between this embodiment and the first embodiment is that the weight ratio of water, fly ash, sand, and cement is 1-1.2: 1-1.2: 1-1.2: 1-1.2, and the foam accounts for water and pulverized coal. 11-13% of the total volume of ash, sand and cement, refer to figure 1 , The finished concrete block 1 has four blind holes 2 arranged side by side, and the volume of the blind holes accounts for 30-60% of the total volume of the whole block. The number and shape of blind holes should not be limited in actual use, and those skilled in the art can determine according to needs, as long as the ratio between the total volume and the total volume of the block is guaranteed.

Embodiment 3

[0029] The difference between this embodiment and the second embodiment is that the weight ratio of water, fly ash, sand, and cement is 1.3 to 1.5: 1.1 to 1.2: 1 to 1.1: 1.8 to 1.9, and the foam accounts for water and pulverized coal. The total volume of ash, sand, and cement is 12-14%, and the volume of the blind holes on the concrete block accounts for 35% of the total volume of the block.

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Abstract

The invention provides a concrete block and a preparation method thereof. The concrete block is capable of achieving and exceeding requirements of the national standard for bricks for building in terms of weight and strength under the condition that low cost is ensured. The concrete block is composed of 1 part to 2 parts of water, 1 part to 2 parts of coal ash, 1 part to 2 parts of sand, 1 part to 2 parts of cement and foam by weight. The size of the foam occupies 8%-15% of the total size of the coal ash, the sand and the cement. The prepared concrete block is of a hollow structure. The preparation method of the concrete block includes stirring the raw materials evenly according to proportion, pouring the materials into a hollow mould, conducting demolding after solidification and conducting nourishment for 7 days. The concrete block simultaneously overcomes the shortcomings of foam concrete bricks, hollow bricks and ceramsite bricks, demonstrates the advantages and facilitates popularization and application.

Description

technical field [0001] The invention relates to a concrete block which can be used instead of ceramsite bricks, hollow bricks and foam concrete blocks, and a preparation method of the block. Background technique [0002] At present, the bricks used in construction are roughly the following types. One is foam concrete bricks. The main method is to inject foam into the concrete, because the national standard requires the strength of the brick to reach 5MPa, and the weight cannot exceed 900 kg / m3. In order to meet the national standard For weight requirements, the construction unit will inject foam that accounts for 60% of the total volume of bricks into the concrete, which can save raw materials and meet the weight required by the national standard to cope with inspections. But there is a problem that cannot be ignored, that is, the strength of the bricks is greatly reduced, and it cannot meet the requirements of the national standard at all, which poses a serious hidden dange...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B28/00
Inventor 胡伟
Owner 胡伟