A kind of quick-drying quick-setting cement superplasticizer composition

A technology of water reducing agent and composition, applied in the field of cement water reducing agent composition, can solve the problems of limited improvement of fluidity cement strength, poor fluidity, poor water reduction rate, small influence of cement strength, etc., and achieves the promotion of hydrophilic performance. , High water reduction rate, improve the effect of water reduction rate

Active Publication Date: 2022-05-27
佛山市华轩新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Naphthalene-based superplasticizers, melamine-based superplasticizers, and polycarboxylate-based superplasticizers are widely used, but they also have many problems, such as low water-reducing rate, poor fluidity, and influence on the strength of cement. Small, etc., it is difficult to improve the effect of water reducing agent in multiple aspects at the same time
For example, dispersed rubber powder is used in Patent Document 1 (CN105967543A), but its fluidity and water reducing rate are poor
Modified chitosan is added in Patent Document 2 (CN104356300A), which improves the water reduction efficiency, but the fluidity and the improvement of cement strength are relatively limited

Method used

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  • A kind of quick-drying quick-setting cement superplasticizer composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1, a fast-drying fast-condensing cement superplasticizer composition, wherein: the raw material is composed of the following components: malic acid, sodium chloride, phenolic resin, polypropylene oxide, acrylic acid, hydrogen peroxide, deionized water, sodium hydroxide; wherein the concentration of hydrogen peroxide is 8mol / L.

[0030] Among them, according to the weight, 3 parts of malic acid, 4 parts of sodium chloride, 15 parts of phenolic resin, 20 parts of polyethylene oxide, 12 parts of acrylic acid, 40 parts of deionized water, and 3 parts of 8mol / L hydrogen peroxide.

[0031] Malic acid, sodium chloride, phenolic resin, polyeprylic propylene oxide, acrylic acid, deionized water added to the container for stirring and mixing, and the water bath is heated to 50 ° C, and then slowly add 8mol / L of hydrogen peroxide, hydrogen peroxide is added for a total of 20min, hydrogen peroxide after the addition of 60min, and then cooled to room temperature, added a con...

Embodiment 2

[0032] Example 2, a fast-drying fast-condensing cement superplasticizer composition, wherein: the raw material is composed of the following components: malic acid, sodium chloride, phenolic resin, polyolamine, acrylic acid, hydrogen peroxide, deionized water, sodium hydroxide; wherein the concentration of hydrogen peroxide is 5mol / L.

[0033] Among them, according to the weight, 6 parts of malic acid, 8 parts of sodium chloride, 8 parts of phenolic resin, 10 parts of polyethylene propylene oxide, 18 parts of acrylic acid, 60 parts of deionized water, 6 parts of 5mol / L hydrogen peroxide.

[0034] Malic acid, sodium chloride, phenolic resin, polyeprylic propylene oxide, acrylic acid, deionized water added to the container for stirring and mixing, and the water bath is heated to 70 ° C, and then slowly add 5mol / L of hydrogen peroxide, hydrogen peroxide is added for a total of 40min, hydrogen peroxide is added after the reaction continues for 30min; then cooled to room temperature...

Embodiment 3

[0035]Example 3, a fast-drying fast-condensing cement superplasticizer composition, wherein: the raw material is composed of the following components: malic acid, sodium chloride, phenolic resin, polypropylene oxide, acrylic acid, hydrogen peroxide, deionized water, sodium hydroxide; wherein the concentration of hydrogen peroxide is 6mol / L.

[0036] Among them, according to the weight, 5 parts of malic acid, 6 parts of sodium chloride, 10 parts of phenolic resin, 15 parts of polyethylene oxide, 16 parts of acrylic acid, 50 parts of deionized water, and 4 parts of 6mol / L hydrogen peroxide.

[0037] Malic acid, sodium chloride, phenolic resin, polyeprylic propylene oxide, acrylic acid, deionized water added to the container for stirring and mixing, and the water bath heated to 60 ° C, and then slowly add 6mol / L of hydrogen peroxide, hydrogen peroxide total addition time of 25min, hydrogen peroxide after addition to continue to react for 40min; then cooled to room temperature, ad...

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Abstract

The invention relates to a fast-drying and quick-setting cement superplasticizer composition. The fast-drying and quick-setting cement superplasticizer composition is characterized in that the raw materials are composed of the following components: malic acid, sodium chloride, phenolic resin, polypropylene oxide, acrylic acid, hydrogen peroxide, deionized water, and sodium hydroxide; , the concentration of hydrogen peroxide is 5‑8mol / L. Wherein, by weight, 3-6 parts of malic acid, 4-8 parts of sodium chloride, 8-15 parts of phenolic resin, 10-20 parts of polypropylene oxide, 12-18 parts of acrylic acid, 40-parts of deionized water 60 parts, 3-6 parts of 5-8mol / L hydrogen peroxide. The cement water-reducing agent composition of the present application can increase the water-reducing rate of the water-reducing agent, improve the fluidity of cement, accelerate the solidification speed of cement slurry, and improve the compressive strength and flexural strength of cement.

Description

Technical field [0001] The present invention relates to cement superplasticizer compositions, in particular a fast-drying fast-condensing cement superplasticizer composition. Background [0002] Cement water reducer can effectively reduce the water-to-ash ratio and significantly improve the strength and other properties of cement. Water reducers play an important role in improving cement flowability and increasing water reduction rates. The water reducer has experienced the development process of lignosulfonate superplasticizer, naphthalene high-efficiency superplasticizer, melamine-based high-efficiency superplasticizer, polycarboxylic acid high-efficiency superplasticizer, and the performance and structure of different types of superplasticizers are different, and the performance improvement of cement is also quite different. Naphthalene high efficiency water reducer, melamine high efficiency water reducer, polycarboxylic acid system high efficiency water reducer are widely use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/30
CPCC04B40/0039C04B2103/12C04B2103/302C04B24/04C04B22/124C04B24/302C04B24/281C04B22/068C04B22/062
Inventor 韦利国
Owner 佛山市华轩新材料有限公司
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