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Concrete additive and preparation method thereof

An additive and concrete technology, applied in the field of building materials, can solve the problems of poor strength durability and impermeability, complicated preparation process and high preparation cost, achieve remarkable durability and impermeability, simple and easy to operate preparation process, improve Compatibility effect

Inactive Publication Date: 2019-01-22
魏菊宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a concrete additive, which overcomes the more or less complex preparation process and high preparation cost of the concrete additives in the prior art, and the strength, fluidity, durability and impermeability Poor, single-function technical problem, simple and easy to operate preparation process, low preparation cost, multiple functions, more significant effects in improving and improving concrete strength, fluidity, durability and impermeability, less usage, and better overall performance Excellent advantages

Method used

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  • Concrete additive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A concrete additive, comprising the following components in parts by weight: 5 parts of polyurethane modified fly ash, 20 parts of indolylsulfonic acid benzophenone polyphenylene ether, polyethylene glycol monomethyl ether-2000-20 10 parts of octaalkylphosphatidylethanolamine, 10 parts of pentaerythritol, and 10 parts of deionized water.

[0029] The preparation method of the polyurethane modified fly ash comprises the following steps: dispersing 30 g of the fly ash in 100 g of dimethyl sulfoxide, then adding 10 g of polyurethane and 3 g of dibutyltin dilaurate therein, and stirring and reacting at 80°C After 6 hours, filter with suction, wash with ethanol for 3 times, and then dry in a vacuum oven at 75° C. for 10 hours to obtain polyurethane-modified fly ash.

[0030] The preparation method of described indolylsulfonic acid benzophenone polyphenylene ether comprises the steps:

[0031] 1 Under a nitrogen atmosphere, 15.2 g of N-(4-sulfonic acid butyl)-4-(4-(4-(dipent...

Embodiment 2

[0035] A concrete additive, comprising the following components in parts by weight: 7 parts of polyurethane modified fly ash, 22 parts of indolylsulfonic acid benzophenone polyphenylene ether, polyethylene glycol monomethyl ether-2000-20 12 parts of octaalkylphosphatidylethanolamine, 11 parts of pentaerythritol, and 12 parts of deionized water.

[0036] The preparation method of the polyurethane-modified fly ash comprises the following steps: dispersing 35 g of the fly ash in 115 g of N,N-dimethylformamide, then adding 10 g of polyurethane and 3 g of stannous octoate to it, and heating at 82° C. Stir and react for 6.5 hours, then filter with suction, wash with ethanol for 4 times, and then dry in a vacuum oven at 77°C for 11 hours to obtain polyurethane modified fly ash.

[0037] The preparation method of described indolylsulfonic acid benzophenone polyphenylene ether comprises the steps:

[0038] Ⅰ Under a helium atmosphere, mix 15.2 g of N-(4-sulfonic acid butyl)-4-(4-(4-(d...

Embodiment 3

[0042] A concrete additive, comprising the following components in parts by weight: 8 parts of polyurethane modified fly ash, 25 parts of indolylsulfonic acid benzophenone polyphenylene ether, polyethylene glycol monomethyl ether-2000-20 13 parts of octaalkylphosphatidylethanolamine, 13 parts of pentaerythritol, and 12 parts of deionized water.

[0043] The preparation method of the polyurethane modified fly ash comprises the following steps: dispersing 40 g of the fly ash in 125 g of N-methylpyrrolidone, then adding 10 g of polyurethane and 3 g of dioctyltin diacetate to it, and stirring and reacting at 85° C. After 7 hours, filter with suction, wash with ethanol for 4 times, and then dry in a vacuum oven at 79° C. for 13 hours to obtain polyurethane modified fly ash.

[0044] The preparation method of described indolylsulfonic acid benzophenone polyphenylene ether comprises the steps:

[0045] ⅠUnder neon gas atmosphere, mix 15.2g of N-(4-sulfonic acid butyl)-4-(4-(4-(dipen...

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Abstract

The invention provides a concrete additive which comprises the following components in parts by weight: 5-10 parts of polyurethane modified fly ash, 20-30 parts of indolyl sulfo diphenyl ketone polyphenyl ether, 10-15 parts of MPEG-2000-DSPE, 10-15 parts of pentaerythritol and 10-15 parts of deionized water. The invention also discloses a preparation method of the concrete additive. The preparation method of the concrete additive disclosed by the invention is simple and feasible, the raw materials are easy to obtain, the preparation cost is low, the dependence on equipment is small, and the method is suitable for large-scale production; the prepared concrete additive has various functions, is more obvious in improvement effect on the strength, fluidity, durability and impermeability of concrete, and has the advantages of being less in using amount and more excellent in comprehensive performance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a concrete additive and a preparation method thereof. Background technique [0002] With the development of science and technology and the improvement of living standards, people have higher and higher requirements for engineering technology, engineering quality and service life of buildings. The realization of these requirements is closely related to the performance of concrete. It is one of the best, most effective and easiest ways to use concrete additives to improve and improve the performance of concrete and meet the requirements of engineering durability. [0003] Concrete is a common building material obtained by mixing cement with sand and stone as aggregate, mixed with water in a certain proportion. Due to the characteristics of its own structure, infiltration often occurs during use. It has the defects of low strength, poor fluidity and durability, and shor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C08G65/40C04B24/16C04B20/02
CPCC04B20/023C04B24/166C04B40/0039C08G65/4037C08G65/4056C04B18/08C04B24/32C04B24/02C04B22/002
Inventor 不公告发明人
Owner 魏菊宁
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