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Super-high early-strength water reducing agent and processing method thereof

A super-early-strength, water-reducing agent technology, which is applied in the field of water-reducing agents for building materials, can solve the problems of high price and adverse effects on the strength of concrete in the later stage, and achieve a significant effect of improvement

Active Publication Date: 2014-04-30
大连市铭源全科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the current construction, several commonly used admixtures have certain shortcomings.
For example, although sodium sulfate has a good early strength effect, it has an adverse effect on the later strength of concrete; and triethanolamine and high-efficiency water reducer, although they have good application effects, are expensive and are only used in special cases.

Method used

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  • Super-high early-strength water reducing agent and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The raw material composition of an ultra-early strength superplasticizer:

[0022] a Allyl polyethylene glycol (molecular weight 2000-3000);

[0023] b Acrylic;

[0024] c acrylamide;

[0025] d amine persulfate;

[0026] e Ammonium bisulfite;

[0027] f thioglycolic acid;

[0028] The molar ratio of the raw materials used is: a:b:c:d:e:f=1:3:0.5:0.06:0.03:0.03.

[0029] between the allyl polyethylene glycols.

[0030] The processing method of super early strength superplasticizer, its steps are as follows:

[0031] 1) Prepare mixed dripping solution: mix b, c and f with an appropriate amount of water to make 30% mixed dripping A;

[0032] 2) Synthesis reaction: first add an appropriate amount of water and a to the reaction kettle, stir to dissolve and heat up to 60 degrees, add d to the reaction kettle, continue stirring, and dropwise A uniformly dropwise into the reaction kettle within 1 hour, the dropwise addition ends After mixing e with an appropriate amoun...

Embodiment 2

[0034] The raw material composition of an ultra-early strength superplasticizer:

[0035] a Allyl polyethylene glycol;

[0036] b methacrylic acid;

[0037] c acrylamide;

[0038] d Potassium persulfate;

[0039] e Ammonium bisulfite;

[0040] f mercaptoethanol;

[0041] The molar ratio of the raw materials used is: a:b:c:d:e:f=1:3:0.5:0.06:0.03:0.03.

[0042] between the allyl polyethylene glycols.

[0043] The processing method of super early strength superplasticizer, its steps are as follows:

[0044] 1) Prepare mixed dripping solution: mix b, c and f with an appropriate amount of water to make 50% mixed dripping A;

[0045] 2) Synthesis reaction: first add an appropriate amount of water and a to the reaction kettle, stir to dissolve and heat up to 60 degrees, add d to the reaction kettle, continue stirring, and dropwise A uniformly dropwise into the reaction kettle within 1 hour, the dropwise addition ends After mixing e with an appropriate amount of water, add it...

Embodiment 3

[0047] The raw material composition of an ultra-early strength superplasticizer:

[0048] a Allyl polyethylene glycol (molecular weight 2000-3000);

[0049] a Allyl polyethylene glycol;

[0050] b Acrylic and methacrylic acid;

[0051] c acrylamide;

[0052] d ammonium persulfate and potassium persulfate;

[0053] e Ammonium bisulfite;

[0054] f mercaptoacetic acid and mercaptoethanol;

[0055] The molar ratio of the raw materials used is: a:b:c:d:e:f=1:3:0.5:0.06:0.03:0.03.

[0056] between the allyl polyethylene glycols.

[0057] The processing method of super early strength superplasticizer, its steps are as follows:

[0058] 1) Prepare mixed dripping solution: mix b, c and f with an appropriate amount of water to make 40% mixed dripping A;

[0059] 2) Synthesis reaction: first add an appropriate amount of water and a to the reaction kettle, stir to dissolve and heat up to 60 degrees, add d to the reaction kettle, continue stirring, and dropwise A evenly dropwise i...

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Abstract

The invention discloses a super-high early-strength water reducing agent and a processing method thereof. The super-high early-strength water reducing agent is prepared from the following raw materials: a, allyl polyethylene glycol; b, either acrylic acid or methacrylic acid or a mixture of them; c, acrylamide; d, ammonium persulfate or potassium persulfate or a mixture of them; e, ammonium hydrogen sulfite; f, mercaptoacetic acid or mercaptoethanol or a mixture thereof, wherein the mole ratio of the adopted raw materials is as follows: a: b: c: d: e: f is 1: (3-4): (0.2-0.5): (0.06-0.1): (0.03-0.05): (0.03-0.05). The super-high early-strength water reducing agent disclosed by the invention obviously improves concrete strength, and specifically 1d strength of the water reducing agent is remarkably better than that of early-strength products in current market.

Description

technical field [0001] The invention relates to a water-reducing agent for building materials, in particular to a super-early strength water-reducing agent and a processing method thereof. Background technique [0002] In building construction, in order to increase the early strength of concrete rapidly, it is necessary to add a certain amount of early strength water reducing agent to the concrete mixture. However, in the current construction, several admixtures commonly used have certain shortcomings. For example, although sodium sulfate has a good early strength effect, it has an adverse effect on the later strength of concrete; while triethanolamine and superplasticizer, although the application effect is good, but expensive, only used in special circumstances. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide a super-early strength type water reducing agent and a processing method thereof, which have obvious effects on improving the ...

Claims

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Application Information

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IPC IPC(8): C08F283/06C04B24/32C04B103/30
Inventor 宫振鑫
Owner 大连市铭源全科技开发有限公司
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