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Foaming agent for preparation of Water-retaining foam concrete

A technology of foam concrete and foam agent, which is applied in the field of civil engineering, can solve the problems of unsatisfactory foam stability, uniformity and dispersibility, lack of foam agent for water-retaining foam concrete, and poor cement bonding, so as to ensure the follow-up water Effects of chemicalization, enhanced interaction, and increased mechanical strength

Inactive Publication Date: 2012-09-12
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The key to preparing water-retaining foam concrete is the foam agent, but currently there are only foam agents for preparing ordinary foam concrete on the market, and there are few varieties and low output, and the foam generated by this foam agent has poor stability, uniformity and dispersion. It is not ideal, and the combination with cement is not good, and there is a lack of foaming agent for preparing water-retaining foam concrete

Method used

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  • Foaming agent for preparation of Water-retaining foam concrete
  • Foaming agent for preparation of Water-retaining foam concrete
  • Foaming agent for preparation of Water-retaining foam concrete

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preparation example Construction

[0019] The foaming agent for preparing water-retaining foam concrete of the present invention, its weight percent consists of:

[0020]

[0021] The anionic surfactants are: alkyl sulfonate, alkyl sulfate, α-alkenyl sulfonate, soap with a carbon chain length of 8-20, and a carbon chain length of 12-18 and EO adduct number Among fatty alcohol ether sulfates with a carbon chain length of 2-9, fatty alcohol ether carboxylates with a carbon chain length of 12-15 and an EO adduct number of 3-9, and fatty acid methyl ester sulfonates with a carbon chain length of 10-18 one or more of.

[0022] The foam stabilizer is: one or more of triethanolamine, gum arabic, gelatin, polymethylcellulose sodium.

[0023] The water retaining agent is: polyvinyl alcohol 1799, polyvinyl alcohol 2488, hydroxypropyl methylcellulose, polyacrylate, polyacrylamide, sodium polyacrylate, potassium polyacrylate, ammonium polyacrylate.

[0024] Foam preparation method of the present invention is as follow...

Embodiment 1

[0030] The foaming agent of the present invention can be obtained by compounding α-alkenyl sulfonate, sodium lauryl polyoxyethylene ether sulfate, triethanolamine, polyacrylamide, and polyvinyl alcohol 1799, and its weight percentage is:

[0031]

[0032] Add the above-mentioned anionic surfactant, foam stabilizer, water-retaining agent, and water into the reaction vessel according to the weight percentage described in Example 1, adjust the temperature to 50-90° C., and the reaction time is 1-3 hours to form a uniform transparent liquid.

[0033] Adopt this invention foaming agent to prepare water-retaining type foam concrete, concrete operation is as follows:

[0034] 1) Portland cement is used as the cementitious material, mixed with an appropriate amount of fly ash, and mixed and stirred uniformly according to the mass ratio of cement: fly ash: water = 1:0.1~1:0.4~0.6 to prepare cement concrete slurry.

[0035] 2) Dilute the invented foam agent with water by 50-70 times ...

Embodiment 2

[0037]

[0038]Add the above-mentioned anionic surfactant, foam stabilizer, water-retaining agent, and water into the reaction vessel according to the weight percentages described in Example 2, adjust the temperature to 50-90°C, and the reaction time is 1-3 hours to form a uniform transparent liquid.

[0039] Adopt this invention foaming agent to prepare water-retaining type foam concrete, concrete operation is as follows:

[0040] 1) Portland cement is used as the cementitious material, mixed with an appropriate amount of fly ash, and mixed and stirred uniformly according to the mass ratio of cement: fly ash: water = 1:0.1~1:0.4~0.6 to prepare cement concrete slurry.

[0041] 2) Dilute the invented foam agent with water by 50-70 times and prepare foam with a foaming machine, mix the foam into the above-mentioned cement concrete slurry, mix evenly and pour to form water-retaining foam concrete.

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Abstract

The invention provides a foaming agent for preparation of water-retaining foam concrete. The foaming agent comprises, by weight percent, 10-30% of anionic surfactant, 5-10% of foam stabilizer, 1-10% of water-retaining agent, and 50-80% of water. The anionic surfactant, the foam stabilizer, the water-retaining agent and the water are added into a reaction container according to the specified weight percentage, the temperature is adjusted to 50-90 DEG C for reaction for 1-3 hours, and uniform and transparent liquid is obtained. The water-retaining foam concrete made of the foaming agent has outstanding water retaining effect and unchanged mechanical strength, and is especially suitable for placement of foam concrete in areas with difficulty in water use or subsequent foam concrete maintenance.

Description

1. Technical field [0001] The invention relates to the field of civil engineering, in particular to a foam agent for preparing water-retaining foam concrete. 2. Background technology [0002] Foam concrete is a new type of lightweight cement environment-friendly type that uses cement, water, foam (if necessary, can be mixed with fly ash, fine sand, sandy soil, admixture) and other materials, mixed and stirred according to a certain proportion, and solidified. The material has a series of special properties that ordinary concrete does not have, such as light weight, high fluidity, low permeability, self-support after curing, low elastic shock absorption, strength adjustability, heat insulation, and durability. It has become an eye-catching new building material. It has been widely used in the field of thermal insulation in housing construction, and it is also used in engineering projects such as abutment backfill, soft foundation road section filling, and tunnel cavity backfi...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B24/16
Inventor 任小明蒋涛吕俊霖张刚申胡金星莫甲新赵辉
Owner HUBEI UNIV
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