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Adhesive for prefabricated buildings and preparation method thereof

An adhesive and construction technology, applied in the field of construction materials, can solve problems such as failure to meet construction standards and requirements, easy generation of waste water and waste, and cracks at the joints, so as to achieve a firm and difficult to break, system The effect of stabilizing and improving bond strength and crack resistance

Active Publication Date: 2022-06-28
TIANYUAN CONSTR GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this stage, because the traditional adhesives contain harmful substances such as free formaldehyde and benzene series, and the production process is relatively complicated, it is easy to generate waste water and waste, etc. At the same time, the performance of the adhesives used in construction projects at this stage is very unstable. Cracks, frosting, etc. are prone to occur at places, which are likely to cause production accidents and cannot well meet construction standards and requirements.

Method used

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  • Adhesive for prefabricated buildings and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A prefabricated building adhesive is prepared from the following raw materials by weight: 32 parts of cementitious materials, 45 parts of aggregates, 4 parts of phosphorylated hydroxypropyl methylcellulose, 1 part of calcium formate, 6 parts of water parts, 1.5 parts of water glass, and 0.8 parts of polyacrylate emulsion.

[0033] The cementitious material is composed of Portland cement, fly ash, and slag, and the mass ratio is: cement: fly ash: slag=80:15:5.

[0034] The cement is 42.5 ordinary Portland cement, the compressive strength of cement 28d mortar is greater than or equal to 50MPa, the water consumption of the standard consistency of the cement is less than or equal to 27%, and the specific surface area is greater than or equal to 400m 2 / kg.

[0035] Fly ash specific surface area 850m 2 / kg~1380m 2 / kg, which belongs to the national standard Class I fly ash.

[0036] The slag is slag fine powder, the grade is S95 and above, and its specific surface area i...

Embodiment 2

[0049]A prefabricated building adhesive is prepared from the following raw materials by weight: 34 parts of cementitious materials, 50 parts of aggregates, 6 parts of phosphorylated hydroxypropyl methylcellulose, 1.2 parts of calcium formate, 7 parts of water parts, 1.8 parts of water glass, and 1 part of polyacrylate emulsion.

[0050] The cementitious material is composed of Portland cement, fly ash, and slag, and the mass ratio is: cement: fly ash: slag=80:15:5.

[0051] The cement is 42.5 ordinary Portland cement, the compressive strength of cement 28d mortar is greater than or equal to 50MPa, the water consumption of the standard consistency of the cement is less than or equal to 27%, and the specific surface area is greater than or equal to 400m 2 / kg.

[0052] The specific surface area of ​​fly ash is 850m 2 / kg~1380m 2 / kg, which belongs to the national standard Class I fly ash.

[0053] The slag is slag fine powder, the grade is S95 and above, and its specific sur...

Embodiment 3

[0066] A prefabricated building adhesive is prepared from the following raw materials by weight: 38 parts of cementitious materials, 52 parts of aggregates, 8 parts of phosphorylated hydroxypropyl methylcellulose, 1.5 parts of calcium formate, 9 parts of water parts, 2 parts of water glass, and 1.2 parts of polyacrylate emulsion.

[0067] The cementitious material is composed of Portland cement, fly ash, and slag, and the mass ratio is: cement: fly ash: slag=80:15:5.

[0068] The cement is 42.5 ordinary Portland cement, the compressive strength of cement 28d mortar is greater than or equal to 50MPa, the water consumption of the standard consistency of the cement is less than or equal to 27%, and the specific surface area is greater than or equal to 400m 2 / kg.

[0069] The specific surface area of ​​fly ash is 850m 2 / kg~1380m 2 / kg, which belongs to the national standard Class I fly ash.

[0070] The slag is slag fine powder, the grade is S95 and above, and its specific s...

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Abstract

The invention discloses a prefabricated building adhesive and a preparation method thereof, belonging to the technical field of building materials. The bonding extrusion of the present invention comprises the following raw materials in parts by weight: 32-38 parts of gelling material, 45-52 parts of aggregate, 4-8 parts of phosphorylated hydroxypropyl methylcellulose, and 1-1.5 parts of calcium formate , 6-9 parts of water, 1.5-2 parts of water glass, 0.8-1.2 parts of polyacrylate emulsion. In the present invention, by phosphorylating hydroxypropyl methylcellulose and adding starch, the mutual cross-penetration and mechanical entanglement play a role of forced mutual compatibility and synergistic effect, greatly improving the cohesiveness and strength of the system, and at the same time giving the system a certain The function of water-retaining and water-retaining, after adding neopentyl glycol diglycidyl ether for cross-linking reaction, the bonding strength is higher, which prevents the falling off of the adhesive; It is used in complex environment of similar buildings, and it is firm and not easy to break.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a prefabricated building adhesive and a preparation method thereof. Background technique [0002] In recent years, prefabricated buildings have become more and more popular due to their advantages of fast construction speed, low cost, high labor efficiency, and effective reduction of dust pollution, noise pollution, and water pollution. Broad development prospects. In prefabricated construction projects, adhesives have a very wide and important application, which can connect different components in construction projects, play the role of sealing, fixing, anti-corrosion, moisture-proof, etc., and can also strengthen and strengthen the construction engineering structure. Repair processing. [0003] The main function of the building structure adhesive is to reinforce the building structure that does not meet the mechanical properties so that it can meet the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/08C04B24/38C04B111/20C04B111/27
CPCC04B28/08C04B24/383C04B2111/00637C04B2201/50C04B2201/52C04B2111/27C04B2111/2038C04B7/02C04B18/08C04B14/068C04B24/04C04B12/04C04B24/2641
Inventor 苑艺林张凯任恒伟王玉刚赵启祥陈茂荣马兰
Owner TIANYUAN CONSTR GROUP