Environmental-friendly concrete additive and preparation method thereof

An environmentally friendly concrete and additive technology, applied in the field of building materials, can solve the problems of limited performance improvement capacity, large environmental pollution, and single performance of concrete, and achieve the effects of improving compatibility and dispersibility, small environmental pollution, and large performance improvement.

Active Publication Date: 2018-07-31
黑龙江省龙建路桥第五工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an environmentally friendly concrete additive and a preparation method thereof. The preparation method is simple and easy, has low requirements for equipment, easy-to-obtain raw materials, convenient post-processing, low price, and is suitable for large-scale production; the prepared environmentally friendly Concrete additives overcome the shortcomings of traditional concrete additives such as high cost, great environmental pollution, single performance, and limited ability to improve concrete performance

Method used

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  • Environmental-friendly concrete additive and preparation method thereof

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Effect test

Embodiment 1

[0035] An environment-friendly concrete additive comprises the following components in parts by weight: 12 parts of organically modified montmorillonite, 1 part of organic boron fiber, 1 part of polyether phosphate amine salt, and 1 part of surfactant.

[0036] The preparation method of the organically modified montmorillonite comprises the steps of: dispersing 30 g of montmorillonite in 100 g of ethanol, and adding 5 g of silane coupling agent KH560 to it, stirring and reacting at 30° C. for 2 hours, and then adding Add 20 g of chitosan, reflux and stir at 70°C for 6 hours, then remove the solvent by rotary evaporation, wash with ethanol for 3 times, and place in a vacuum oven for 12 hours at 70°C.

[0037] The preparation method of described polyether phosphate amine salt, comprises the steps:

[0038] 1) Dissolve 20g of bis(2-aminoethyl)hydrogen phosphate in 100g of N-methylpyrrolidone, add 5g of chlorinated polyether to it, stir and react at 50°C for 6 hours, and then prec...

Embodiment 2

[0046] An environment-friendly concrete additive comprises the following components in parts by weight: 13 parts of organically modified montmorillonite, 2 parts of organic boron fiber, 1 part of polyether phosphate amine salt, and 2 parts of surfactant.

[0047] Preferably, the preparation method of the organically modified montmorillonite comprises the steps of: dispersing 35 g of montmorillonite in 120 g of isopropanol, and adding 6 g of silane coupling agent KH560 to it, and stirring and reacting at 32° C. for 2.5 hour, then add chitosan 22g therein, reflux and stir reaction at 72°C for 6.5 hours, then rotary evaporate to remove the solvent, and wash 4 times with ethanol and place in a vacuum drying oven at 73°C for 13 hours.

[0048] The preparation method of described polyether phosphate amine salt, comprises the steps:

[0049] 1) Dissolve 23g of bis(2-aminoethyl)hydrogen phosphate in 120g of dimethyl sulfoxide, add 6g of chlorinated polyether to it, stir and react at 5...

Embodiment 3

[0057] An environment-friendly concrete additive comprises the following components in parts by weight: 13 parts of organically modified montmorillonite, 3 parts of organic boron fiber, 2 parts of polyether phosphate amine salt, and 3 parts of surfactant.

[0058] The preparation method of the organically modified montmorillonite comprises the following steps: dispersing 40 g of montmorillonite in 130 g of dichloromethane, and adding 7 g of silane coupling agent KH560 therein, stirring and reacting at 34° C. for 3 hours, and then Add 25g of chitosan therein, reflux and stir the reaction at 75°C for 7 hours, then remove the solvent by rotary evaporation, wash with ethanol for 5 times, and place in a vacuum drying oven for 13.5 hours at 76°C.

[0059] The preparation method of described polyether phosphate amine salt, comprises the steps:

[0060] 1) Dissolve 25g of bis(2-aminoethyl)hydrogen phosphate in 135g of N,N-dimethylformamide, add 7g of chlorinated polyether to it, stir ...

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Abstract

The invention discloses an environmental-friendly concrete additive. The additive is characterized in that the additive comprises, by weight, 12-15 parts of organic modified montmorillonoid, 1-4 partsof organic boron fiber, 1-3 parts of polyether phosphate amine salt and 1-4 parts of surface active agent. The invention further discloses a preparation method of the environmental-friendly concreteadditive. The method comprises the steps that components are uniformly mixed according to a proportion, dried, added into a ball grinding mill and milled for 15-25 minutes, and the environmental-friendly concrete additive is discharged. By means of the additive, the defects of higher cost, severe environmental pollution, single performance, limited improving capability of concrete performance andthe like of traditional concrete additives are overcome. Compared with concrete which is added with the traditional normal concrete additive, concrete which is added with the environmental-friendly concrete additive has lower price, slighter environmental pollution, greater performance improvement, and higher strength, fluidity, durability and water-tight performance.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an environmentally friendly concrete additive and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of the economy and the advancement of urban-rural integration, high-rise buildings have sprung up into people's lives. The scale of major infrastructure projects represented by these high-rise buildings is unprecedented, and they are all closely related to concrete materials. Concrete is obtained by using cement as the cementitious material, sand and stone as aggregates, mixed with water in a certain proportion, and stirred. Because of its abundant raw materials, low price and simple production process, it is widely used in civil engineering, machinery industry, geothermal engineering, shipbuilding and marine development. [0003] With the improvement of people's safety awareness and the increase of special requireme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B24/16C04B20/02C08G65/328C08G65/332C08G65/334C08G65/335C08G65/338C04B14/10C04B103/40C04B103/60C04B103/61
CPCC04B20/023C04B24/166C04B24/246C04B40/0039C04B2103/40C04B2103/601C04B2103/61C08G65/328C08G65/3322C08G65/3348C08G65/3356C08G65/338C04B16/06C04B14/104C04B24/18
Inventor 董廷显唐振三
Owner 黑龙江省龙建路桥第五工程有限公司
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