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Rare earth concrete water reducing agent for building

A concrete water reducing agent and construction technology, applied in the field of water reducing agent, can solve the problems of poor use effect of water reducing agent, achieve the effect of improving corrosion resistance, improving impermeability, and ensuring the effect of use

Pending Publication Date: 2019-11-15
江苏博思通新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide a rare earth concrete water reducer for construction, which has the advantage of better use effect and solves the problem of poor use effect of the existing water reducer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A rare earth concrete water reducing agent for construction, comprising the following raw materials in parts by weight: 5-9 parts of naphthalene, 3 parts of concentrated sulfuric acid, 2 parts of formaldehyde, 1 part of melamine, 7 parts of phenol, 4 parts of sodium sulfamate, 6 parts of liquid caustic soda, 20 parts of water.

[0030] Its preparation method comprises the following steps:

[0031] S1, put naphthalene into the naphthalene kettle with a capacity of 400ml and heat and melt for 0.5h, put into concentrated sulfuric acid after melting to obtain naphthalenesulfonic acid a and naphthalenesulfonic acid b;

[0032] S2, adding water to naphthalenesulfonic acid a for hydrolysis for 1h, after hydrolysis, putting formaldehyde, melamine and naphthalenesulfonic acid b into a reaction kettle with a capacity of 800ml for reaction for 2h to obtain activator A;

[0033] S3, add phenol and sodium sulfamate in the reaction kettle, react with activator A for 1h, continuously...

Embodiment 2

[0037] A rare earth concrete water reducing agent for construction, comprising the following raw materials in parts by weight: 5-9 parts of naphthalene, 4 parts of concentrated sulfuric acid, 3 parts of formaldehyde, 2 parts of melamine, 8 parts of phenol, and 5 parts of sodium sulfamate, 7 parts of liquid caustic soda, 25 parts of water.

[0038] Its preparation method comprises the following steps:

[0039] S1, put 7 parts of naphthalene into the naphthalene still with a capacity of 500ml and heat and melt for 0.6h, put into 4 parts of concentrated sulfuric acid after melting to obtain naphthalenesulfonic acid a and naphthalenesulfonic acid b;

[0040] S2, adding water to naphthalenesulfonic acid a for hydrolysis for 2h, after hydrolysis, putting formaldehyde, melamine and naphthalenesulfonic acid b into a reaction kettle with a capacity of 900ml to react for 3h to obtain activator A;

[0041] S3, add phenol and sodium sulfamate in the reaction kettle, react with activator ...

Embodiment 3

[0045] A rare earth concrete water reducing agent for construction, comprising the following raw materials in parts by weight: 5-9 parts of naphthalene, 5 parts of concentrated sulfuric acid, 4 parts of formaldehyde, 3 parts of melamine, 9 parts of phenol, 6 parts of sodium sulfamate, 8 parts of liquid caustic soda, 30 parts of water.

[0046] Its preparation method comprises the following steps:

[0047] S1, put naphthalene into the naphthalene kettle with a capacity of 600ml and heat and melt for 0.7h, put into concentrated sulfuric acid after melting to obtain naphthalenesulfonic acid a and naphthalenesulfonic acid b;

[0048] S2, adding water to naphthalenesulfonic acid a for hydrolysis for 3h, after hydrolysis, putting formaldehyde, melamine and naphthalenesulfonic acid b into a reaction kettle with a capacity of 1000ml to react for 4h to obtain activator A;

[0049] S3, add phenol and sodium sulfamate in the reaction kettle, react with activator A for 3h, continuously a...

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Abstract

The invention discloses a rare earth concrete water reducing agent for building, which relates to the technical field of water reducing agent. The rare earth concrete water reducing agent for buildingcomprises the following raw materials in parts by weight: naphthalene 5-9 parts, concentrated sulfuric acid 3-5 parts, formaldehyde 2-4 parts, melamine 1-3 parts, phenol 7-9 parts, sodium sulfanilate4-6 parts, liquid alkali 6-8 parts, and water 20-30 parts. It has a good dispersing effect on many powder materials such as cement, the water reduction rate is 25%, the water reducing agent has the advantages of good use effect, the anti-seepage performance of concrete is improved effectively, the water reducing agent has the advantages of good use effect, can effectively improve the corrosion resistance of concrete; by using melamine, phenol and sodium sulfanilate, the corrosion resistance of concrete can be further improved, the use effect of concrete can be ensured, and by using liquid alkali, the condensation agent can be neutralized effectively, thus the use effect of the whole water reducer can be achieved.

Description

technical field [0001] The invention relates to the technical field of water reducing agents, in particular to a rare earth concrete water reducing agent for construction. Background technique [0002] Water reducing agent is a kind of concrete admixture that can reduce the amount of mixing water under the condition of maintaining the slump of concrete basically unchanged. After being added to the concrete mixture, it has a dispersing effect on the cement particles, which can improve its workability and reduce the unit Water consumption, improve the fluidity of concrete mixture, or reduce unit cement consumption, saving cement. [0003] The rare earth concrete water reducing agent used in construction has the effect of reducing water consumption, but the water reducing rate is low, the dispersibility is poor, and it cannot effectively ensure the impermeability and corrosion resistance of concrete, and the use effect is relatively low. Difference. SUMMARY OF THE INVENTION ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G16/02C04B24/22C04B103/30
CPCC08G16/0237C04B24/226C04B2103/302
Inventor 于浩
Owner 江苏博思通新材料有限公司
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