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Aerated concrete and preparation method thereof

A technology of air-entrained concrete and additives, applied in the field of concrete, can solve the problems of low physical strength of air-entrained concrete, achieve the effects of preventing rapid shrinkage, increasing water retention performance, and increasing bonding degree

Inactive Publication Date: 2020-01-14
王敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem to be solved by the present invention: Aiming at the current problem of low physical strength of air-entrained concrete, the present invention provides an air-entrained concrete and its preparation method

Method used

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  • Aerated concrete and preparation method thereof

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Effect test

preparation example Construction

[0026] The preparation method of increasing agent comprises the steps:

[0027] A. Mix kyanite, diatomaceous earth, and zinc oxide in a mass ratio of 6:3~6:2, put them into a calciner, and calcinate at 2300~2600°C for 50 minutes, and then use 4~6°C carbon dioxide to The calcined product is cooled to room temperature, the calcined product is collected, ball milled, and the ball milled product is collected;

[0028] B. Put the ball mill and 1.1mol / L ammonia water into the reactor according to the mass ratio of 4:10~16 and mix evenly, then add P123 with 10~15% of ball mill mass and 13~17% of ball mill mass with acetic acid and stir and mix , and preheat at 40~45°C for 50 minutes;

[0029] C. After preheating, add tetraethyl silicate with 40-45% of ball-milled mass and 1-2 times of ball-milled absolute ethanol, mix well, heat at 50-55°C for 1 hour, and cool to room temperature Stand still for 8 hours, discharge, filter, dry, and crush at 800r / min for 40 minutes, collect the crus...

Embodiment 1

[0036] The additives are configured by mixing water reducer, early strength agent and surfactant in a mass ratio of 3:2:0.8.

[0037] The choice of water reducer is polycarboxylate superplasticizer.

[0038] The choice of early strength agent is triethanolamine.

[0039] The surfactant is configured by mixing alginic acid and sorbitan fatty acid ester at a mass ratio of 1:7.

[0040] The preparation method of increasing agent comprises the steps:

[0041] A. Mix kyanite, diatomaceous earth, and zinc oxide evenly in a mass ratio of 6:6:2, put them into a calciner, and calcinate at 2600°C for 50 minutes, and then use 6°C carbon dioxide to cool the calcined product to room temperature , collect calcined matter, ball mill, collect ball milled matter;

[0042] B. Put the ball mill and 1.1mol / L ammonia water into the reactor according to the mass ratio of 4:16 and mix them evenly, then add P123 with 15% of the mass of the ball mill and 17% of the acetic acid with the mass of the ...

Embodiment 2

[0050] The additives are configured by mixing water reducer, early strength agent and surfactant in a mass ratio of 2:2:0.7.

[0051] The choice of water reducer is lignosulfonate water reducer.

[0052] The choice of early strength agent is triethanolamine.

[0053] The surfactant is configured by mixing alginic acid and sorbitan fatty acid ester at a mass ratio of 1:5.

[0054] The preparation method of increasing agent comprises the steps:

[0055] A. Mix kyanite, diatomaceous earth, and zinc oxide uniformly in a mass ratio of 6:4:2, put them into a calciner, and calcinate at 2500°C for 50 minutes, and then use 5°C carbon dioxide to cool the calcined product to room temperature , collect calcined matter, ball mill, collect ball milled matter;

[0056] B. Put the ball mill and 1.1mol / L ammonia water into the reactor according to the mass ratio of 4:15 and mix them evenly, then add P123 with 13% of the mass of the ball mill and 15% of the acetic acid with the mass of the bal...

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Abstract

The invention belongs to the technical field of concrete and in particular relates to aerated concrete and a preparation method thereof. According to the aerated concrete, cyanite and diatomite are adopted as basic materials, high temperature calcination is implemented, the cyanite is rapidly expanded, the expanded cyanite is filled with the diatomite, at the same time, zinc oxide is added, the zinc oxide is distributed to the surface of the cyanite at a high temperature state, carbon dioxide is adopted to implement cooling, a part of the carbon dioxide is adsorbed by the surfaces of solid particles, under the action of acetic acid, zinc acetate is formed by the zinc oxide, in addition, tetraethyl silicate is adopted as a raw material to form mesoporous silica, and due to an additive, themechanical properties of the concrete can be effectively improved. According to the aerated concrete, calcium carbide powder is adopted as an aeration agent, acetylene is released in the aeration process, through catalysis of the zinc acetate on the surface of the additive, ethyl acetate is formed and is polymerized to form a polymer, and through net-shaped combination of pores through the polymer, the combination degree of materials can be increased, and the mechanical properties of the materials can be improved.

Description

technical field [0001] The invention belongs to the technical field of concrete, and in particular relates to an air-entrained concrete and a preparation method thereof. Background technique [0002] Aerated concrete block is a new light-weight and energy-saving wall material with uniform pores, smooth surface, neat edges and corners, and easy construction. It has the characteristics of light weight, heat preservation, heat insulation, and non-combustibility. It is mainly made of fly ash, sand or other industrial waste residues (amount of more than 65%), and is made by raw material treatment, batching, stirring, gas generation, cutting, curing and other processes, and can be used to replace traditional clay bricks , used for wall masonry, the unit volume weight is one-third of clay bricks, the thermal insulation performance is 3 to 4 times that of clay bricks, the sound insulation performance is twice that of clay bricks, and the impermeability is more than 1 times that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B28/14C04B24/04
CPCC04B28/14C04B38/02C04B40/0042C04B2201/20C04B2201/50C04B14/06C04B7/00C04B18/08C04B2103/302C04B24/122C04B24/38C04B24/08C04B22/00C04B24/32C04B14/041C04B14/08C04B24/04C04B24/18
Inventor 王敏施衍
Owner 王敏
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