Liquid accelerator and preparation method thereof

A technology of quick-setting agent and liquid, which is applied in the field of liquid accelerator and its preparation, which can solve the problems of fast liquid accelerator preparation method and lack of setting time, so as to improve the final setting time and compressive strength, and the synthesis process is simple , good adhesion effect

Inactive Publication Date: 2015-07-08
张萍
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is a lack of a liquid quick-setting agent with a fast setting time and a preparation method thereof

Method used

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  • Liquid accelerator and preparation method thereof
  • Liquid accelerator and preparation method thereof
  • Liquid accelerator and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The invention provides a liquid quick-setting agent, and the quick-setting agent is composed of the following components by mass percentage:

[0018]

[0019]

[0020] The defoamer is selected from the combination of glycerin fatty acid ester and glycerin.

[0021] The hydroxycarboxylic acid is selected from five combinations of citric acid, salicylic acid, lactic acid, formic acid and oxalic acid.

[0022] The stabilizer is selected from the combination of urea, formaldehyde and polyacrylamide.

[0023] The preparation method of liquid accelerator of the present invention comprises the following steps:

[0024] Dissolve aluminum sulfate, aluminum hydroxide, sodium carbonate, and magnesium sulfate in hot water. After the dissolution is complete, add hydroxycarboxylic acid slowly under stirring. After the dissolution is complete, add defoamer and stabilizer in sequence. to room temperature to prepare the product.

[0025] The stirring rate during the stirring is...

Embodiment 2

[0028] The difference between embodiment 2 and embodiment 1 is: the present invention provides a kind of liquid quick-setting agent, and described quick-setting agent is made up of following components by mass percentage:

[0029]

[0030] The defoamer is glycerin fatty acid ester.

[0031] The hydroxycarboxylic acid is selected from a combination of citric acid and salicylic acid.

[0032] The stabilizer is selected from five combinations of urea, formaldehyde, polyacrylamide, diethanolamine and triethanolamine.

[0033] In the preparation method of the liquid quick-setting agent according to the present invention, the stirring rate during the stirring is 700r / min.

Embodiment 3

[0035] The difference between embodiment 3 and embodiment 1 is: the present invention provides a kind of liquid quick-setting agent, and described quick-setting agent is made up of following components by mass percentage:

[0036]

[0037]

[0038] The defoamer is glycerin.

[0039] The hydroxycarboxylic acid is selected from one or a combination of citric acid, salicylic acid, lactic acid, formic acid and oxalic acid.

[0040] The stabilizer is selected from the combination of diethanolamine and triethanolamine. In the preparation method of the liquid quick-setting agent according to the present invention, the stirring rate during the stirring is 900r / min.

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Abstract

The invention discloses a liquid accelerator and a preparation method thereof. The liquid accelerator is composed of the following components by weight percentage: 15-30% of aluminium hydroxide, 5-10% of sodium metaaluminate, 5-10% of sodium carbonate, 8-10% of magnesium sulfate, 5-20% of hydroxy carboxylic acid, 0.1-0.4% of defoamer, 1-10% of stabilizer and the balance of water. The liquid accelerator has rapid sprayed concrete setting time and obvious effect for the early strength and the 30-day compressive strength, is good in caking property, low in resilience value, simple in synthetic process, mild in reaction condition and excellent in performance and can realize the green environment-protection non-pollution construction. The effect is better than that of the market liquid accelerator.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a liquid accelerator and a preparation method thereof. Background technique [0002] Accelerator is an admixture that can quickly set and harden concrete or mortar. It is mainly used in shotcrete and mortar machine plugging and emergency projects. The liquid quick-setting agent for shotcrete improves the shortcomings of uneven powder mixing, large dust and poor construction environment, accelerates the setting of the concrete mixture, and improves the early strength, which can increase the thickness of the sprayed layer and shorten the next spraying time. Time has greatly expanded its scope of use. [0003] Concrete admixture is an indispensable building material product in the process of engineering construction, and is called the fifth component of concrete. Accelerator for shotcrete is a very important product in concrete admixture. Shotcrete has great advantages...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/06
Inventor 张萍
Owner 张萍
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