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High-strength stable type liquid accelerator and preparation method thereof

A stable, quick-setting agent technology, applied in the field of building materials, can solve the problems of poor stability, large strength loss, and unstable quality of the accelerator, and achieve a large retention rate of later strength, high early strength, and spray return The effect of low elasticity

Active Publication Date: 2019-05-31
KZJ NEW MATERIALS GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-strength and stable liquid quick-setting agent and its preparation method, to solve the problem that the existing quick-setting agent is strongly alkaline, and the strength loss in the later stage is large, and the stability of the quick-setting agent is not good, and it is easy to Delamination, unstable quality and other issues

Method used

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  • High-strength stable type liquid accelerator and preparation method thereof
  • High-strength stable type liquid accelerator and preparation method thereof
  • High-strength stable type liquid accelerator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Preparation of complexation enhancer: 100.00g ethylenediaminetetraacetic acid is added to the reactor, the stirring device is turned on, and 22.00g monoethanolamine, 10.00g diethanolamine and 1.40g p-toluenesulfonic acid are added in one go, and the After stirring evenly, start to heat up, and react for 3 hours at a temperature of 85°C to obtain a complexing enhancer;

[0022] (2) Preparation of stabilizer: Add 100.00g of bottom water to the reactor, turn on the stirring device, control the temperature of the reactor to 40°C, and then add 3-fluorocinnamic acid and 4-fluorocinnamic acid dropwise to the reactor respectively. Mixed solution (wherein 3-fluorocinnamic acid is 15.00g, 4-fluorocinnamic acid is 5.00g, water is 20.00g), acrylic acid aqueous solution (wherein acrylic acid is 35.00g, water is 20.00g), ammonium persulfate aqueous solution (wherein Ammonium sulfate is 1.20g, and water is 10.00g) and thioglycolic acid aqueous solution (wherein thioglycolic acid i...

Embodiment 2

[0025] (1) Preparation of complexation enhancer: 100.00g of ethylenediaminetetraacetic acid is added to the reaction kettle, the stirring device is turned on, and 30.00g of diethanolamine, 5.00g of triethanolamine and 2.20g of concentrated sulfuric acid are added at one time, and the mixture is stirred evenly Then start to heat up, and react for 3 hours at a temperature of 80°C to obtain a complexing enhancer;

[0026] (2) Preparation of stabilizer: Add 100.00g of bottom water to the reactor, turn on the stirring device, control the temperature of the reactor to 30°C, and then add 3-fluorocinnamic acid and 2-fluorocinnamic acid dropwise to the reactor respectively. Mixed solution (wherein 3-fluorocinnamic acid is 8.00g, 2-fluorocinnamic acid is 12.00g, water is 20.00g), acrylic acid aqueous solution (wherein acrylic acid is 47.00g, water is 20.00g), ammonium persulfate aqueous solution (wherein Ammonium sulfate is 1.50g, water is 10.00g) and thioglycolic acid aqueous solution ...

Embodiment 3

[0029] (1) Preparation of complexation enhancer: 100.00g of ethylenediaminetetraacetic acid is added to the reaction kettle, the stirring device is turned on, and 32.00g of triethanolamine, 6.00g of monoethanolamine and 2.70g of p-toluenesulfonic acid are added in one go, to be stirred After uniformity, start to heat up, and react for 4 hours at a temperature of 75°C to obtain a complexing enhancer;

[0030] (2) Preparation of stabilizer: Add 100.00g of bottom water to the reactor, turn on the stirring device, control the temperature of the reactor to 50°C, and then add 4-fluorocinnamic acid and 2-(trifluoroform base) cinnamic acid mixed solution (wherein 4-fluorocinnamic acid is 15.00g, 2-(trifluoromethyl)cinnamic acid is 5.00g, water is 20.00g), acrylic acid aqueous solution (wherein acrylic acid is 52.00g, water is 20.00g g), ammonium persulfate aqueous solution (wherein ammonium persulfate is 2.20g, water is 10.00g) and mercaptoethanol aqueous solution (wherein mercaptoeth...

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Abstract

The invention belongs to the field of building materials, and particularly relates to a high-strength stable type liquid accelerator and a preparation method thereof. The liquid accelerator at least comprises, by weight, 20-40 parts of aluminum hydroxide, 1-10 parts of ammonia water, 5-15 parts of a complexing enhancer, 0.5-3 parts of a stabilizer, 1-5 parts of magnesium aluminum silicate and thebalance water. The prepared liquid accelerator has the advantages of being high in early strength, high in later strength retention rate, low in alkali content and low in injection rebound rate, and can be widely applied to supporting, plugging, repairing and the like of tunnels, roads, railways, mines and subways.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a high-strength and stable liquid quick-setting agent and a preparation method thereof. Background technique [0002] Shotcrete has good construction conditions and has many advantages that cannot be compared with ordinary formwork cast concrete. In particular, the development of wet-mix shotcrete technology in recent years has greatly expanded the scope of project use of shotcrete. Shotcrete is often used for pouring tunnel linings, walls, ceilings and other thin-walled structures or linings of other structures and protective layers of steel structures. Wait. Accelerator is an important component material of shotcrete, which can significantly shorten the setting and hardening time of concrete slurry, increase the thickness of a spray layer, shorten the time interval between two spray coatings, improve the early strength of shotcrete and provide payment resistance i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B103/12
Inventor 官梦芹郭鑫祺蒋卓君李祥河陈晓彬林添兴郭元强
Owner KZJ NEW MATERIALS GROUP CO LTD
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