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Freezing resistant type alkali-free accelerator, and preparation method and application thereof

A technology of quick-setting agent and anti-freezing type, applied in the field of anti-freezing alkali-free setting quick-setting agent and its preparation, can solve the problems of reducing the aqueous solution of alkali-free setting quick-setting agent, etc., so as to shorten the setting time, eliminate the retarding effect, prevent icing effect

Active Publication Date: 2017-10-27
四川苏博特新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to solve the problem in the prior art that the freezing point of the non-alkali quick-setting agent aqueous solution cannot be lowered without affecting other properties of the quick-setting agent, the present invention provides an antifreeze type non-alkali quick-setting agent and its preparation Method and Application

Method used

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  • Freezing resistant type alkali-free accelerator, and preparation method and application thereof
  • Freezing resistant type alkali-free accelerator, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The preparation of antifreeze type alkali-free quick-setting agent comprises the following steps:

[0026] (1) Mix 58g of aluminum sulfate, 5g of diethanolamine, 0.5g of sodium fluoride and 36g of water, heat up to 60°C and react for 3 hours, then cool down to room temperature, add 0.5g of lactic acid and mix evenly to obtain the alkali-free accelerator;

[0027] (2) Mix 0.2g of soluble starch and 58.5g of water, heat up to 100°C to dissolve for 5 minutes, then cool down to room temperature, add 2.3g of N,N-dimethylglycine and 39g of trimethylglycine and mix evenly to obtain antifreeze;

[0028] (3) Add 1 g of antifreeze to 100 g of non-alkali quick-setting agent, and mix evenly to obtain an antifreeze type non-alkali quick-setting agent.

Embodiment 2

[0030] The preparation of antifreeze type alkali-free quick-setting agent comprises the following steps:

[0031] (1) Mix 40g of aluminum sulfate, 10g of triethanolamine, 3g of potassium fluoride and 44.5g of water, heat up to 90°C and react for 1 hour, then cool down to room temperature, add 2.5g of oxalic acid and mix evenly to obtain the alkali-free quick-setting agent;

[0032] (2) Mix 0.6g of soluble starch and 58.4g of water, heat up to 100°C to dissolve for 3 minutes, then cool down to room temperature, add 40g of trimethylglycine and 1g of N,N-diethylglycine and mix evenly to obtain antifreeze;

[0033] (3) Add 10 g of antifreeze into 100 g of non-alkali quick-setting agent, and mix evenly to obtain an antifreeze type non-alkali quick-setting agent.

Embodiment 3

[0035] The preparation of antifreeze type alkali-free quick-setting agent comprises the following steps:

[0036] (1) Mix 40g of aluminum sulfate, 7g of N,N-dimethylethanolamine, 1.5g of sodium fluoride and 50g of water, heat up to 70°C and react for 2 hours, then cool down to room temperature, add 1.5g of malic acid and mix well. Alkali-free accelerator;

[0037] (2) Mix 0.6g of soluble starch and 50g of water, heat up to 100°C to dissolve for 4 minutes, then cool down to room temperature, add 43g of trimethylglycine and 6.4g of N,N-diethylglycine and mix evenly to obtain antifreeze;

[0038] (3) Add 5 g of antifreeze to 100 g of non-alkali quick-setting agent, and mix evenly to obtain an antifreeze type non-alkali quick-setting agent.

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Abstract

The invention discloses a freezing resistant type alkali-free accelerator, and a preparation method and application thereof. The freezing resistant type alkali-free accelerator is prepared by the following steps: aluminum sulfate, an alcohol amine, a fluoride, a stabilizer and water are firstly mixed uniformly to prepare an alkali-free accelerator, and the product is mixed with a freezing resistant liquid containing glycine and soluble starch for reaction, thus the freezing resistant type alkali-free accelerator is obtained. The freezing resistant type alkali-free accelerator has good freezing resistant ability, so that the accelerator can be normally stored and transported in winter, and the freezing resistant type accelerator contains ingredients such as the soluble starch, so that the setting time of the accelerator can be reduced in a synergistic manner, the concrete strength is not influenced, and the practical application of the accelerator is facilitated.

Description

technical field [0001] The invention belongs to the technical field of concrete admixtures, in particular to an antifreeze type alkali-free quick-setting agent and its preparation method and application. Background technique [0002] Accelerator is a concrete admixture that makes cement or concrete set and harden quickly. Its main function is to increase the thickness of the first spraying of shotcrete, shorten the interval between the second spraying, and improve the early strength of concrete at the same time, so as to provide support resistance in time. It has been widely used in modern underground engineering, mining engineering, plugging and emergency rescue Wait for the project. Because the alkali-free accelerator has the advantages of low corrosion to the human body and high early strength, it has become the popular trend and future development direction of the accelerator. [0003] Our country has a vast territory, and the temperature difference between the north a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38
CPCC04B40/0039C04B2103/12C04B2103/601C04B22/148C04B24/122C04B22/126C04B24/04C04B24/38C04B24/123
Inventor 张小磊刘加平李磊王伟王瑞王育江田倩
Owner 四川苏博特新材料有限公司
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