Foaming agent for foam concrete, and preparation method and application of foaming agent

A foamed concrete and foaming agent technology, applied in the field of materials, can solve the problems of poor bonding, foaming ability, poor foam stability, etc., and achieve the effects of simplifying the construction process, improving the foaming effect, and saving production costs.

Inactive Publication Date: 2012-07-25
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, animal protein foaming agents generally have poor foaming ability and foam stability, and the upper part of the product will be clear water, and the lower part will be the finished foaming agent.
Although other types of blowing agents can stably produce bubbles of uniform size, some additives such as sodium dodecylbenzene sulfonate generally have the problem of not being well combined with cement and fly ash slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First take 50 kg of water, heat it to 60°C and keep the temperature constant, add 2.5 kg of sodium stearate, mix and stir; after the sodium stearate is completely dissolved, cool to room temperature, then add 15 kg of liquid paraffin, and stir for 2 minutes. Finally, 50 kg of 30% hydrogen peroxide was added, and the concrete foaming agent was obtained after stirring evenly.

Embodiment 2

[0028] First take 50 kg of water, heat it to 65°C and keep the temperature constant, add 3 kg of sodium stearate, mix and stir; after the sodium stearate is completely dissolved, cool to room temperature, then add 12 kg of liquid paraffin, and stir for 3 minutes. Finally, add 45 kilograms of 30% hydrogen peroxide and mix well to prepare the concrete foaming agent.

[0029] Product Example Three

[0030] First take 50 kg of water, heat it to 70°C and keep the temperature constant, add 3.5 kg of sodium stearate, mix and stir; after the sodium stearate is completely dissolved, cool to room temperature, then add 17 kg of liquid paraffin, and stir for 2 minutes. Finally, 55 kg of 30% hydrogen peroxide was added, and the concrete foaming agent was obtained after stirring evenly.

Embodiment 4

[0032] First take 50 kg of water, heat it to 60°C and keep the temperature constant, add 2 kg of sodium stearate, mix and stir; after the sodium stearate is completely dissolved, cool to room temperature, then add 8 kg of liquid paraffin, and stir for 3 minutes. Finally, add 40 kilograms of 30% hydrogen peroxide and mix well to obtain a concrete foaming agent.

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PUM

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Abstract

The invention discloses foaming agent for foam concrete, and preparation method and application of foaming agent. The foaming agent comprises components including, by weight ratio, from 35 to 45% of hydrogen peroxide, from 10 to 15% of liquid paraffin, from 2 to 3% of sodium stearate and the balance water, and the volume percentage concentration of the hydrogen peroxide ranges from 32% to 42%. The foaming agent is excellent in performance, high in strength and cheap in price, the foaming behavior of the foam concrete is improved, a foaming effect is further enhanced, and holes of a concrete product are uniform.

Description

technical field [0001] The invention specifically relates to a composite foaming agent for concrete and its preparation method and application, belonging to the field of material technology. Background technique [0002] Foamed concrete is a "dense cell" lightweight building material with a large number of closed pores inside, which is formed by mixing the main raw materials such as cement, lime, fly ash, sand and admixtures evenly and then pouring and hardening. Foaming agent is a key factor in the production of foamed concrete, and its performance directly determines the quality of foamed concrete. In order to solve the problem of poor performance of a single blowing agent, compound modification technology has been adopted at home and abroad to produce compound blowing agents, which is also a development trend of blowing agents in the future. For example, the United States, Russia, Japan, etc. have successively developed high-efficiency protein foaming agents, that is, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B24/04
Inventor 刘斌姚义俊吴红艳沈国柱
Owner NANJING UNIV OF INFORMATION SCI & TECH
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