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Concrete composite air entraining agent and method of preparing the same

An air-entraining agent and concrete technology, applied in the field of concrete admixtures, can solve the problems of reducing concrete strength and other properties, general air-entraining effect, inability to comprehensively improve concrete performance, etc. The effect of the entrainment effect

Inactive Publication Date: 2009-10-07
HUNAN JIANGHAI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the air-entraining agent of a single substance has great limitations and shortcomings in terms of performance, and cannot comprehensively improve the performance of concrete.
Some air-entraining agents with a single substance have a better air-entraining effect, but the air-entraining agents introduced are not delicate, uniform and stable microscopic bubbles. Such air-entraining agents will significantly reduce the strength and other properties of concrete; some air-entraining agents introduced with a single substance The quality of the air-entraining agent is good, but its air-entraining effect is average, and it cannot introduce enough tiny air-entraining agents. Such an air-entraining agent cannot significantly improve the durability of concrete

Method used

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  • Concrete composite air entraining agent and method of preparing the same
  • Concrete composite air entraining agent and method of preparing the same
  • Concrete composite air entraining agent and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A concrete composite air-entraining agent of the present invention, the composite air-entraining agent is prepared by mixing the following components in mass fractions:

[0030] Malay pine soap 30%

[0031] Sodium dodecylbenzenesulfonate 20%

[0032] Coconut Oil Diethanolamide 10% and

[0033] Water 40%.

[0034] The preparation method of the above-mentioned composite air-entraining agent for concrete is: add 3.0kg of male pine soap to 4.0kg of tap water and stir evenly, then add 2.0kg of dodecylbenzenesulfonic acid at a temperature of 70°C to 80°C The coconut oil diethanolamide of sodium and 1.0kg is fully mixed and stirred to obtain the concrete composite air-entraining agent of the present embodiment.

[0035] The male rosin soap used in this example is prepared by the following steps: get 4.0 kg of rosin and pulverize it into a reaction kettle, heat it to 130°C to 165°C under a nitrogen atmosphere to melt the rosin, and under constant stirring, Then add 0.8kg of...

Embodiment 2

[0037] A concrete composite air-entraining agent of the present invention, the composite air-entraining agent is prepared by mixing the following components in mass fractions:

[0038] Marathon Soap 25%

[0039] Sodium dodecylbenzenesulfonate 15%

[0040] Coconut Oil Diethanolamide 9%

[0041] Water 51%.

[0042] The preparation method of the above-mentioned composite air-entraining agent for concrete is: 5.0kg of male pine soap is added to 10.2kg of tap water and stirred evenly, and then added 3.0kg of sodium dodecylbenzenesulfonate and 1.8 kg at a temperature of 150°C. kg of coconut oil diethanolamide, fully mixed and stirred to obtain the concrete composite air-entraining agent of the present embodiment.

[0043] The male rosin soap used in this example is prepared through the following steps: get 5.0 kg of rosin and pulverize it and add it to a reaction kettle, heat it to 130°C to 165°C under a nitrogen atmosphere to melt the rosin, and under constant stirring, Then ad...

Embodiment 3

[0045]A concrete composite air-entraining agent of the present invention, the composite air-entraining agent is prepared by mixing the following components in mass fractions:

[0046] Malay pine soap 20%

[0047] Sodium dodecylbenzenesulfonate 10%

[0048] Coconut Oil Diethanolamide 8%

[0049] Water 62%.

[0050] Add 5 kg of male pine soap to 15.5 kg of tap water and stir evenly, then add 2.5 kg of sodium dodecylbenzenesulfonate and 2 kg of coconut oil diethanolamide at a temperature of 100 ° C, and fully mix and stir to obtain Concrete composite air-entraining agent.

[0051] The male rosin soap used in this example is prepared through the following steps: get 6.0 kg of rosin and pulverize it and add it to a reaction kettle, heat it to 130° C. to 165° C. to melt the rosin under a nitrogen atmosphere, and, under constant stirring, Then the maleic anhydride of 1.2kg is added in the reactor to carry out reaction, and reaction temperature is controlled at 180 ℃~195 ℃, and th...

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Abstract

The present invention disclose a concrete composite air entraining agent and method of preparing the same, the composite air entraining agent is made by 20-30% malay rosin soap, 10-20% sodium dodecyl benzene sulfonate, 8-10% coconut oil diethanolamide and 10-62% water in mass ratio; the specific preparation method is adding the malay rosin soap into water and mixing uniformly, adding the sodium dodecyl benzene sulfonate and the coconut oil diethanolamide at the temperature of 70-150 DEG, and mixing uniformly abundantly to get the concrete composite air entraining agent. The concrete composite air entraining agent of the invention is provided with good air entraining impression, which can improving concrete capability evidently.

Description

technical field [0001] The invention relates to a concrete admixture, in particular to a concrete air-entraining agent capable of significantly improving the durability of concrete and a preparation method thereof. Background technique [0002] At present, there are many types of concrete air-entraining agents, including anionic active agents, cationic active agents, non-ionic active agents and zwitterionic active agents. The most widely used air-entraining agents are anionic active agents, such as rosin Classes, alkylbenzene sulfonates and other types. However, the air-entraining agent of a single substance has great limitations and shortcomings in terms of performance, and cannot fully improve the performance of concrete. Some air-entraining agents with a single substance have a better air-entraining effect, but the air-entraining agents introduced are not delicate, uniform and stable microscopic bubbles. Such air-entraining agents will significantly reduce the strength a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/24C04B103/50
CPCC04B2103/50C04B40/0039
Inventor 李桃凡田承宇何德强徐勇袁超罗文智
Owner HUNAN JIANGHAI TECH DEV
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