Anti-cracking high-strength aerated building block

A high-strength technology of aerated blocks, applied in the field of building materials, can solve the problems of impermeability and compressive strength of autoclaved aerated concrete blocks, and the difficulty of applying autoclaved aerated concrete blocks to load-bearing walls. Achieve the effect of increasing aggregate packing density, compactness, compressive strength and cracking strength

Inactive Publication Date: 2020-09-11
江门市擎宏科技实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing autoclaved aerated concrete blocks are generally porous structure, so that the impermeability and compressive strength of autoclaved aerated concrete blocks are easily affected, making it difficult for autoclaved aerated concrete blocks to be suitable for load-bearing walls Buildings and buildings that have been flooded for a long time or that often alternate between wet and dry, therefore, there is still room for improvement

Method used

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  • Anti-cracking high-strength aerated building block
  • Anti-cracking high-strength aerated building block
  • Anti-cracking high-strength aerated building block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] refer to figure 1 , is a method for preparing a crack-resistant high-strength aerated block disclosed by the present invention, comprising the following steps:

[0073] Step (1), adding water, cement, fine aggregate and water reducing agent into the mortar mixer, stirring and mixing evenly to form a pre-mixture.

[0074] Step (2), add foaming agent, polydimethylsiloxane, cobalt 2-ethylhexanoate and benzoin dimethyl ether to the pre-mixture while stirring, stir and mix evenly, let it stand for 5 minutes to form concrete slurry.

[0075] Step (3), stir for 3 minutes, then pour the concrete slurry into the mold, and send the mold poured with the concrete slurry to the static curing room to allow sufficient foaming and static curing, and control the static curing temperature to 60 ℃, control static stop curing time is 8h.

[0076] In step (4), the statically formed concrete in step (3) is demoulded first, and then the concrete is cut into actual required specifications t...

Embodiment 2

[0081] The difference of embodiment 1 is:

[0082] The raw material components and contents of crack-resistant high-strength aerated blocks are shown in Table 1.

[0083] The time of standing reaction in step (2) is 7.5min;

[0084] In the step (3), the stirring time is controlled to be 5.5 min, and the time for static stopping and curing is controlled to be 9 h.

Embodiment 3

[0086] The difference of embodiment 1 is:

[0087] The raw material components and contents of crack-resistant high-strength aerated blocks are shown in Table 1.

[0088] The time of standing reaction in step (2) is 10min;

[0089] In the step (3), the stirring time is controlled to be 8 min, and the time for static stop and maintenance is controlled to be 10 h.

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Abstract

The invention aims to problem that the strength and impermeability of aerated blocks are easily affected by the structure, and relates to the technical field of building materials, in particular to ananti-crack high-strength aerated building block, which is prepared from the following raw material in parts by mass: 30-40 parts of water; 25 to 30 parts of cement; 4-7 parts of a water reducing agent; 0.3 to 0.7 part of a foaming agent; 60 to 80 parts of a fine aggregate; 1 to 3 parts of polydimethylsiloxane; 1-2 parts of cobalt 2-ethylhexanoate; and 0.6 to 1.2 parts of benzoin dimethyl ether. The aerated building block has the effect that the strength and the impermeability of the aerated building block are not easily influenced by the structure.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a crack-resistant high-strength aerated block. Background technique [0002] At present, autoclaved aerated concrete blocks generally use fly ash, lime, cement, gypsum and slag powder as the main raw materials, add an appropriate amount of gas generating agent, regulator and air bubble stabilizer, and mix the ingredients, pour, and stop A porous concrete product made by processes such as cutting, cutting and autoclaving. [0003] Existing autoclaved aerated concrete blocks are generally porous structure, so that the impermeability and compressive strength of autoclaved aerated concrete blocks are easily affected, making it difficult for autoclaved aerated concrete blocks to be suitable for load-bearing walls Buildings and buildings that have been flooded for a long time or that often alternate between wet and dry, therefore, there is still room for improvement. Cont...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/02C04B38/10C04B24/42C04B24/40C04B24/16C04B24/02C04B14/28C04B14/04B28B1/50B28C5/38C04B40/00C04B111/40C04B111/27
CPCB28B1/50B28C5/388C04B14/041C04B14/28C04B24/023C04B24/16C04B24/40C04B24/42C04B28/04C04B38/02C04B38/10C04B40/0028C04B40/0035C04B2111/27C04B2111/40C04B2201/50C04B2103/302C04B22/142C04B18/141C04B22/04
Inventor 黄国忠黄超
Owner 江门市擎宏科技实业有限公司
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