Dry powder interface treating agent for aerated concrete and preparation method thereof

An interface treatment agent and air-entrained concrete technology, which is applied in the field of building materials, can solve the problems of failure to prevent the rapid absorption of water by air-entrained concrete, the work performance of the interface agent needs to be improved, and the shrinkage and deformation of the interface layer wall are large, so as to achieve improvement. Bond strength and compactness, improvement of compactness and impermeability, effects of inhibiting generation and expansion

Active Publication Date: 2022-01-25
临海市忠信新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high strength of the cement slurry mixed with glue, the gap between the shrinkage of the interface layer and the shrinkage and deformation of the wall is large, and it is easy to cause problems such as cracking and peeling of the surface mortar
[0003] In summary, the interface treatment agents applied to aerated concrete mainly have the following problems: the strength of the traditional interface treatment agent is too high, the interface layer and the wall shrinkage are not consistent, causing the cracking of the mortar layer; the impermeability is not good, and it cannot be prevented. The function of air-entrained concrete absorbing water quickly from the mortar; the working performance of the interface agent needs to be improved, such as fluidity, tensile bond strength, etc.; the water retention of the interface needs to be improved

Method used

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  • Dry powder interface treating agent for aerated concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] S1: Weigh 100 parts of cement, 30 parts of fly ash, 20 parts of slag powder, 3 parts of redispersible latex powder, 200 parts of sand, 0.1 part of hydroxypropyl methylcellulose, and 2 parts of sulphoaluminate expansion agent 1 part, 1 part of cellulose fiber, 2 parts of polyvinyl alcohol fiber, 2 parts of nano silicon oxide.

[0023] S2: Add the weighed fly ash, slag powder, redispersible latex powder, sand, hydroxypropyl methyl cellulose, and sulphoaluminate expansion agent into the mixer and mix evenly, then add cement, continue to mix, Finally, add cellulose fibers, polyvinyl alcohol fibers, and nano silicon oxide, stir and mix to obtain a dry powder interface treatment agent.

Embodiment 2

[0025] S1: Weigh 100 parts of cement, 50 parts of fly ash, 30 parts of slag powder, 5 parts of redispersible latex powder, 300 parts of sand, 0.3 parts of hydroxypropyl methylcellulose, and 5 parts of sulphoaluminate expansion agent 3 parts, 3 parts of cellulose fiber, 5 parts of polyvinyl alcohol fiber, 3 parts of nano silicon oxide.

[0026] S2: Add the weighed fly ash, slag powder, redispersible latex powder, sand, hydroxypropyl methyl cellulose, and sulphoaluminate expansion agent into the mixer and mix evenly, then add cement, continue to mix, Finally, add cellulose fibers, polyvinyl alcohol fibers, and nano silicon oxide, stir and mix to obtain a dry powder interface treatment agent.

Embodiment 3

[0028] S1: Weigh 100 parts of cement, 35 parts of fly ash, 25 parts of slag powder, 2 parts of redispersible latex powder, 280 parts of sand, 0.15 parts of hydroxypropyl methylcellulose, and 3 parts of sulphoaluminate expansion agent 1.5 parts of cellulose fiber, 3 parts of polyvinyl alcohol fiber, and 2 parts of nano silicon oxide.

[0029] S2: Add the weighed fly ash, slag powder, redispersible latex powder, sand, hydroxypropyl methyl cellulose, and sulphoaluminate expansion agent into the mixer and mix evenly, then add cement, continue to mix, Finally, add cellulose fibers, polyvinyl alcohol fibers, and nano silicon oxide, stir and mix to obtain a dry powder interface treatment agent.

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Abstract

The invention discloses a dry powder interface treating agent for aerated concrete. The dry powder interface treating agent is prepared from the following ingredients in parts by weight: 100 parts of cement, 30 to 50 parts of fly ash, 20 to 30 parts of slag powder, 1 to 5 parts of redispersible latex powder, 200 to 300 parts of sand, 0.1 to 0.3 part of hydroxypropyl methyl cellulose, 2 to 5 parts of a sulphoaluminate expanding agent, 1 to 3 parts of cellulose fibers, 2 to 5 parts of polyvinyl alcohol fibers, and 2-3 parts of nano silicon oxide. The invention further discloses a preparation method of the dry powder interface treating agent for the aerated concrete. The interface treating agent prepared by the invention not only has good adhesive property, but also has good impermeability.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a dry powder interface treatment agent for aerated concrete and a preparation method thereof. Background technique [0002] Autoclaved aerated concrete is currently the only wall material that can achieve 50% energy saving. It is not only light in weight, heat-insulating, sound-insulating, fire-resistant, earthquake-resistant, and convenient in construction. It can also consume a large amount of industrial waste in the production process, which is beneficial to environmental protection. In the actual application process, because the autoclaved aerated concrete block itself is porous and has strong water absorption, it is easier to quickly absorb water from the mortar, and the tension structure of the aerated concrete block belongs to the "ink bottle" structure, so it is difficult to release water out, thus causing problems such as hollowing and cracking of the mortar l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2201/50C04B2111/00293C04B2201/10C04B2111/00508C04B18/08C04B18/141C04B2103/0054C04B14/06C04B24/383C04B22/148C04B16/0675C04B16/0641C04B14/062Y02W30/91
Inventor 何广朋范树景葛师鋆
Owner 临海市忠信新型建材有限公司
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