High-effective concrete water reducing agent

A technology of concrete water reducer and water reducer, which is applied in the field of building materials, can solve the problems of high cost, achieve the effects of improving fluidity, reducing usage, and reducing mixing water

Inactive Publication Date: 2018-05-15
萧县沃德化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of high-performance water reducer has been successfully researched in China, but due to its high cost, it has not been widely used in engineering.
However, considerin

Method used

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  • High-effective concrete water reducing agent

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Effect test

Embodiment 1

[0026] A high-efficiency concrete water reducer, comprising the following raw materials in parts by weight: 45 parts of modified polycarboxylate water reducer, 36 parts of cellulose propyl sulfonate, 25 parts of melamine sulfonate formaldehyde condensate, calcium lignosulfonate 12 parts, 8 parts of disodium cocoyl glutamate, 5 parts of guar gum, 0.5 parts of sodium nitrite, 12 parts of volcanic ash, 15 parts of 400 mesh calcium hydroxide powder, 6 parts of acetone, 55 parts of water, 5.5 parts of additives share.

[0027] Wherein, the preparation method of modified polycarboxylate water reducer comprises the following steps:

[0028] (1) Mix and stir hydroxyethyl methylcellulose and glacial acetic acid evenly, then heat to 70°C, keep stirring for 1.5 hours, then heat up to 95°C, add maleic anhydride and sodium acetate, keep warm for 6 hours, then cool naturally to room temperature , add water to quench, then add concentrated sulfuric acid and stir for 1.5 hours, then slowly p...

Embodiment 2

[0031] A high-efficiency concrete water reducer, comprising the following raw materials in parts by weight: 55 parts of modified polycarboxylate water reducer, 44 parts of cellulose propyl sulfonate, 30 parts of melamine sulfonate formaldehyde condensate, calcium lignosulfonate 18 parts, 12 parts of disodium cocoyl glutamate, 7 parts of guar gum, 1.2 parts of sodium nitrite, 16 parts of volcanic ash, 17 parts of 400 mesh calcium hydroxide powder, 9 parts of acetone, 70 parts of water, 6.5 parts of additives share.

[0032] Wherein, the preparation method of modified polycarboxylate water reducer comprises the following steps:

[0033] (1) Mix and stir hydroxyethyl methylcellulose and glacial acetic acid evenly, then heat to 65°C, keep stirring for 1.2 hours, then heat up to 90°C, add maleic anhydride and sodium acetate, keep warm for 6 hours, then naturally cool to room temperature , add water to quench, then add concentrated sulfuric acid and stir for 1.5 hours, then slowly ...

Embodiment 3

[0036]A high-efficiency concrete water reducer, comprising the following raw materials in parts by weight: 40 parts of modified polycarboxylate water reducer, 30 parts of cellulose propyl sulfonate, 20 parts of melamine sulfonate formaldehyde condensate, calcium lignosulfonate 10 parts, 5 parts of disodium cocoyl glutamate, 3 parts of guar gum, 0.3 parts of sodium nitrite, 10 parts of volcanic ash, 10 parts of 400 mesh calcium hydroxide powder, 4 parts of acetone, 50 parts of water, 4 parts of additives share.

[0037] Wherein, the preparation method of modified polycarboxylate water reducer comprises the following steps:

[0038] (1) Mix and stir hydroxyethyl methylcellulose and glacial acetic acid evenly, then heat to 80°C, keep stirring for 1 hour, then heat up to 90°C, add maleic anhydride and sodium acetate, keep warm for 6 hours, then cool naturally to room temperature, Add water to quench, then add concentrated sulfuric acid and stir for 1.5 minutes, then slowly pour t...

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Abstract

The invention provides a high-effective concrete water reducing agent and relates to the field of building materials. The water reducing agent includes, by weight, 40-60 parts of a modified polycarboxylate water reducing agent, 30-50 parts of propyl sulfonic acid cellulose, 20-35 parts of a melamine sulfonate formaldehyde condensate, 10-20 parts of calcium lignosulphonate, 5-15 parts of cocoyl glutamic acid disodium, 3-8 parts of guar gum, 0.3-1.5 parts of sodium nitrite, 10-20 parts of volcanic ash, 10-20 parts of calcium hydroxide powder, 4-10 parts of acetone, 50-80 parts of water and 4-8 parts of an additive. The water reducing agent has good slump loss resistance, is low in influence on cement cementing time, and solves the problems of water reduction, air entraining, coagulation retarding and water bleeding, is low in cost and is free of environment pollution.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a high-efficiency concrete water reducer. Background technique [0002] Concrete is one of the most widely used construction materials today, and high-performance concrete represents the development direction of concrete technology. Concrete admixtures have a significant impact on the properties of concrete in a variety of ways, enabling specific, previously impossible applications, enabling more cost-effective use of concrete ingredients, helping to enable new labor-saving processes, and achieving low-temperature concrete construction and more. The rapid development of new high-strength and high-performance concrete technologies shows that high-performance admixtures are an indispensable key material for concrete technology. The water reducing agent is the most widely used admixture in concrete engineering, and its dosage accounts for more than 80% of the total admixture dosa...

Claims

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Application Information

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IPC IPC(8): C04B24/38C08F291/06C08F220/06C04B103/30
CPCC04B40/0039C04B2103/302C08F251/02C08F283/065C08F220/06C04B24/168C04B24/161C04B24/18C04B24/12C04B24/38C04B22/085C04B14/14C04B22/064C04B24/008
Inventor 马丽涛崔岩王硕
Owner 萧县沃德化工科技有限公司
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