Multi-functional concrete additive and preparation method and concrete thereof

A technology of concrete and additives, applied in the field of building materials, can solve the problems of insufficient anti-corrosion performance, poor comprehensive protection effect, easy cracking and collapse, etc.

Inactive Publication Date: 2018-03-02
CHANGSHA QIUDIANBING INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the concrete additives can improve the compressive strength and anti-seepage performance of concrete, the anti-corrosion performance is not good enough. At the same time, its toughness performance is average, and it is prone to cracking and collapse. The comprehensive protection effect is not good.

Method used

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  • Multi-functional concrete additive and preparation method and concrete thereof

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preparation example Construction

[0025] The preparation method of described multifunctional concrete additive comprises the following steps:

[0026] S1. Modified material: mix and stir polyacrylamide, alginate, 3-aminopropyltrialkoxysilane, silicate, and water in a weight ratio for 3-4 hours at a temperature of 200-300°C, Add sulfuric acid to raise the temperature to 350-400°C, continue to stir for 2-3 hours, add sulfuric acid twice, mix and stir for 0.5-1 hour after adding sulfuric acid for the first time, add sulfuric acid for the second time, and the amount added for the first time It is 2-3 times the amount added for the second time to obtain modified material A;

[0027] S2. Mixing: mix the modified material A prepared in step S1 with carbodiimide, polysulfone resin, cis-1,4-polybutadiene rubber, 4-dimethylaminopyridine, poly[(2-epoxy Ethyl)-1,2-cyclohexanediol] 2-ethyl-2-(hydroxymethyl)-1,3-propanediol ether is mixed by weight ratio, first cis-1,4-polybutadiene Rubber, poly[(2-oxiranyl)-1,2-cyclohexa...

Embodiment 1

[0032] A multifunctional concrete additive and its preparation method and concrete, in parts by weight, comprising the following raw materials: 65 parts of polyacrylamide, 15 parts of alginate, 28 parts of 3-aminopropyltrialkoxysilane, silicate 35 parts, 11 parts of sulfuric acid, 105 parts of water, 15 parts of carbodiimide, 22 parts of polysulfone resin, 57 parts of cis-1,4-polybutadiene rubber, 12 parts of 4-dimethylaminopyridine, poly[( 58 parts of 2-oxiranyl)-1,2-cyclohexanediol] 2-ethyl-2-(hydroxymethyl)-1,3-propanediol ether;

[0033] The preparation method of described multifunctional concrete additive comprises the following steps:

[0034] S1. Modified material: Mix and stir polyacrylamide, alginate, 3-aminopropyltrialkoxysilane, silicate, and water at a temperature of 231°C for 3 hours, then add sulfuric acid to lower the temperature Rise to 354°C, continue to stir for 2.3 hours, add sulfuric acid twice, mix and stir for 0.6 hours after adding sulfuric acid for the...

Embodiment 2

[0039] A multifunctional concrete additive and its preparation method and concrete, in parts by weight, comprising the following raw materials: 72 parts of polyacrylamide, 17 parts of alginate, 32 parts of 3-aminopropyltrialkoxysilane, silicate 45 parts, 13 parts of sulfuric acid, 135 parts of water, 18 parts of carbodiimide, 23 parts of polysulfone resin, 67 parts of cis-1,4-polybutadiene rubber, 14 parts of 4-dimethylaminopyridine, poly[( 71 parts of 2-oxiranyl)-1,2-cyclohexanediol] 2-ethyl-2-(hydroxymethyl)-1,3-propanediol ether;

[0040] The preparation method of described multifunctional concrete additive comprises the following steps:

[0041] S1. Modified material: Mix polyacrylamide, alginate, 3-aminopropyltrialkoxysilane, silicate, and water at a temperature of 253°C for 4 hours, then add sulfuric acid to lower the temperature. Rise to 378°C, continue to stir for 3 hours, add sulfuric acid twice, mix and stir for 0.7 hours after adding sulfuric acid for the first tim...

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Abstract

The invention discloses a multi-functional concrete additive and a preparation method and a concrete thereof. The multi-functional concrete additive comprises the following raw materials: polyacrylamide, sodium alginate, 3-aminopropyl trialkoxysilane, silicate, sulfuric acid, water, carbodiimide, polysulfone resin, cis1,4-polybutadiene rubber, 4-dimethylaminopyridine, poly[(2-oxiranyl group)-1,2-cyclohexanediol]2-ethyl-2-(hydroxymethyl)-1,3-propylene glycol ether. The multi-functional concrete additive is prepared by the steps of material modification, mixing and drying. The concrete preparedby the multi-functional concrete additive can obviously increase anti-compression performance, antiseepage performance, toughness performance and corrosion resisting performance, and can avoid phenomena of cracking and collapse of engineering.

Description

【Technical field】 [0001] The invention belongs to the technical field of building materials, and in particular relates to a multifunctional concrete additive, a preparation method thereof and concrete. 【Background technique】 [0002] Concrete is one of the most important civil engineering materials in contemporary times. The term concrete usually refers to the cement concrete obtained by using cement as the cementitious material, gravel and fine sand as the aggregate, mixed with water in a certain proportion, and admixtures and admixtures can also be added. Widely used in civil engineering. In practical engineering applications, concrete is often exposed to relatively harsh environments. For example, in the environment with acid and alkali liquids, concrete is easily corroded; in the environment of cyclic heavy load transportation, concrete is prone to collapse and cracking. Therefore, it is necessary to add additives to protect the concrete during the preparation of concr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/38C04B28/00
CPCC04B40/0039C04B28/00C04B2111/20C04B2201/50C04B2201/52C04B24/2652C04B24/38C04B24/42C04B22/00C04B22/141C04B24/125C04B24/26C04B24/2611C04B24/32C04B14/06C04B14/02C04B18/08
Inventor 卯志华
Owner CHANGSHA QIUDIANBING INFORMATION TECH CO LTD
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