Green alkali-free liquid concrete setting accelerator and preparation method thereof

A technology of concrete and quick-setting agent, applied in the field of concrete processing, can solve the problems of affecting the health of operators, insufficient concrete strength, and high energy consumption in the production process, and achieve the effects of shortening the setting time, shortening the induction period, and small pores

Inactive Publication Date: 2018-01-12
常州琨瑶纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problems to be solved by the present invention are as follows: high energy consumption in the production process, serious dust pollution in the construction and use process, serious impact on the health of operators when the closed culvert is in use, coupled with insufficient strength of concrete in the later stage, large loss, high energy consumption in the production process, and high cost problem, a green non-alkali liquid concrete quick-setting agent and preparation method thereof are provided

Method used

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  • Green alkali-free liquid concrete setting accelerator and preparation method thereof

Examples

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Effect test

example 1

[0023] Take 50g of aluminum sulfate, 10g of calcium hydroxide, 3g of organic acid, and 25g of deionized water, put them into a three-neck flask, stir at 300r / min for 1h in a constant temperature water bath at 80°C, and obtain the mother liquor of the quick-setting agent, take 4g of aluminum hexafluoride Add 10g of deionized water, heat to 50°C, stir at 300r / min for 20min, then add 1g of organic alcohol amine, continue stirring for 15min, then drop the accelerator mother liquor at 1mL / min, add 3g of ethyl alcohol after the addition is complete Disodium diamine tetraacetate, heat preservation and stirring at 50°C for 30 minutes, add 0.5 g of stabilizer after cooling to room temperature, and then stir at 200 r / min for 10 minutes to obtain a green alkali-free liquid concrete accelerator.

example 2

[0025] Take 55g of aluminum sulfate, 12g of calcium hydroxide, 4g of organic acid, and 28g of deionized water, put them into a three-neck flask, stir at 350r / min for 1h in a constant temperature water bath at 85°C, and obtain the mother liquor of the quick-setting agent. Take 4g of aluminum hexafluoride Add 11g of deionized water, heat to 55°C, stir at 350r / min for 25min, then add 2g of organic alcohol amine, continue stirring for 18min, then drop the accelerator mother liquor at 1mL / min, add 4g of ethyl alcohol after the dropwise addition Disodium diamine tetraacetate, heat preservation and stirring at 65°C for 35 minutes, add 0.6 g of stabilizer after cooling to room temperature, and then stir at 250 r / min for 15 minutes to obtain a green alkali-free liquid concrete accelerator.

example 3

[0027] Take 60g of aluminum sulfate, 15g of calcium hydroxide, 5g of organic acid, and 30g of deionized water, put them into a three-necked flask, and stir at 400r / min for 2 hours in a constant temperature water bath at 90°C to obtain the mother liquor of the quick-setting agent. Take 5g of aluminum hexafluoride Add 12g of deionized water, heat to 60°C, stir at 400r / min for 30min, then add 3g of organic alcohol amine, continue to stir for 20min, then drop the accelerator mother liquor at 2mL / min, add 5g of ethyl alcohol after the dropwise addition Disodium diamine tetraacetate, heat preservation and stirring at 80°C for 40 minutes, add 0.8 g of stabilizer after cooling to room temperature, and then stir at 300 r / min for 20 minutes to obtain a green alkali-free liquid concrete accelerator.

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Abstract

The invention relates to a green alkali-free liquid concrete setting accelerator and a preparation method thereof, and belongs to the technical field of concrete processing. According to the method, aluminum sulphate, calcium hydroxide, organic acid and deionized water are taken and are charged into a three-opening flask; stirring is performed under the condition of constant-temperature water bath; setting accelerator mother liquid is obtained; sodium fluoroaluminate is taken and is added into the deionized water; heating and stirring are performed; then, organic alcohol amine is added; continuous stirring is performed; then, the setting accelerator mother liquid is dripped; after the dripping is completed, ethylene diamine tetraacetic acid is added; heat insulation stirring is performed;after the materials are cooled to the room temperature, stabilizing agents are added; stirring is performed; the green alkali-free liquid concrete setting accelerator is obtained. The setting accelerator provided by the invention has the advantages of no alkali, non-toxicity, no smell and no corrosion; the environment is protected in the construction process; almost no harm is caused on the body health of construction personnel and ecological environment in the spraying process; the production process is simple; the preparation is easy; the storage is easy; the stability in the storage processis high.

Description

technical field [0001] The invention relates to a green alkali-free liquid concrete quick-setting agent and a preparation method thereof, belonging to the technical field of concrete processing. Background technique [0002] Concrete quick-setting agent is a chemical admixture that can make cement or concrete set quickly, and is sometimes called a setting accelerator. At present, accelerators have been widely used in shotcrete construction of tunnels, urban construction, water conservancy and electric power culverts, water diversion tunnels and other underground projects, self-waterproof shotcrete support, leak prevention, plugging construction, rapid construction of ground concrete and emergency concrete construction. Emergency and other projects. [0003] As China enters the historical process of reform and opening up, infrastructure construction has entered a blowout period. In just over thirty years, China has transformed from a poor and backward country to the world's ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B103/12
Inventor 王之霖陈倩
Owner 常州琨瑶纺织品有限公司
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