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Cement grinding aid and application thereof in improving autoclaved curing strength of high-alumina clinker cement

A technology of high-aluminum clinker and grinding aid, applied in the field of cement adjuvants, can solve the problems such as limited effect of autoclave curing strength improvement, increase production cost, etc., achieve the effect of high autoclave curing strength improvement, and improve the fluidity of slurry , the effect of good admixture adaptability

Inactive Publication Date: 2020-04-10
华润水泥技术研发(广西)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such grinding aids have a limited effect on improving the autoclaved curing strength, and can only increase the autoclaved curing strength of P.II cement to about 54MPa, while the general pipe pile factory requires the autoclaved curing strength of P.II cement to be greater than 54MPa
In addition, for P.II cement with clinker aluminum content greater than 6%, traditional grinding aids can only increase the strength of autoclaved curing by increasing the content of alcohol amine, resulting in increased production costs

Method used

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  • Cement grinding aid and application thereof in improving autoclaved curing strength of high-alumina clinker cement
  • Cement grinding aid and application thereof in improving autoclaved curing strength of high-alumina clinker cement
  • Cement grinding aid and application thereof in improving autoclaved curing strength of high-alumina clinker cement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of grinding aid, is made up of the composition of following mass percentage:

[0028] Take 10% of dipolyglycerol, 20% of monoethanol diisopropanolamine, 8% of sodium sulfate, 8% of sodium metaaluminate, 12% of sodium gluconate, 0.5% of sodium polyacrylate, and 41.5% of clean water. Special grinding aid, named ZY-1 type, the dosage is 5 / 10,000;

[0029] The ratio of the comparison sample is: triethanolamine 5%, diethanol monoisopropanolamine 35%, molasses 5%, industrial salt 5%, clean water 50%, called traditional type-1, and the dosage is 5 / 10,000, 60000;

[0030] Carry out a small grinding test, the clinker aluminum content is 6.3% (w / w), KH=0.936, and the cement ratio is as follows:

[0031] clinker Desulfurization gypsum limestone 93 4 3

[0032] The cement test results are as follows:

[0033]

[0034] Compared with the blank cement group, the traditional type-1 grinding aid improves the strength of cement conventional curing and...

Embodiment 2

[0038] A kind of grinding aid, is made up of the composition of following mass percentage:

[0039] Take 5% of dipolyglycerol, 25% of monoethanol diisopropanolamine, 6% of sodium chloride, 5% of sodium metaaluminate, 15% of sodium gluconate, 0.2% of sodium polyacrylate, 43.8% of clean water, and compound into a special grinding aid, named ZY-2 type, the dosage is 5 / 10,000;

[0040] The ratio of the comparison sample is 15% of triethanolamine, 25% of diethanol monoisopropanolamine, 15% of molasses, 8% of industrial salt, and 37% of clean water. / Ten thousand;

[0041] Carry out a small grinding test, the clinker aluminum content is 6.5% (w / w), KH=0.930, and the cement ratio is as follows:

[0042] clinker Desulfurization gypsum limestone 92 3.5 4.5

[0043] The cement test results are as follows:

[0044]

[0045] Compared with the blank cement group, the traditional type-2 grinding aid improves the strength of cement conventional curing and autocl...

Embodiment 3

[0049] A kind of grinding aid, is made up of the composition of following mass percentage:

[0050] Take 10% of dipolyglycerol, 25% of monoethanol diisopropanolamine, 6% of sodium sulfate, 5% of sodium metaaluminate, 10% of sodium gluconate, 0.1% of sodium polyacrylate, and 43.9% of clean water. Special grinding aid, named ZY-3 type, the dosage is 5 / 10,000;

[0051] The ratio of the comparison sample is 40% of diethanol monoisopropanolamine, 5% of molasses, 5% of industrial salt, and 50% of clean water. It is called traditional type-3, and the dosage is 5 / 10,000 respectively;

[0052] Carry out a small grinding test, the clinker aluminum content is 6.4% (w / w), KH=0.92, and the cement ratio is as follows:

[0053] clinker Desulfurization gypsum limestone 91 4 5

[0054] The cement test results are as follows:

[0055]

[0056] Compared with the blank cement group, the traditional -3 grinding aid improves the strength of cement conventional curing an...

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Abstract

The invention discloses a cement grinding aid and application thereof in improving autoclaved curing strength of high-alumina clinker cement. The grinding aid comprises the following components in percentage by mass: 30 to 35% of grinding aid components, 5 to 10% of sodium metaaluminate, 6 to 10% of other inorganic salts, 10 to 15% of sodium gluconate, and 0.1 to 0.5% of sodium polyacrylate, withthe balance being water, wherein the grinding aid components are composed of dimer glycerol and monoethanol diisopropanolamine. The grinding aid disclosed by the invention has a relatively high autoclaved curing strengthening effect, and compared with a traditional grinding aid, the autoclaved curing strength is improved by 3 MPa or above. The grinding aid provided by the invention also has good additive adaptability, and compared with the traditional grinding aid, the fluidity of neat paste is improved by 20 mm.

Description

technical field [0001] The invention belongs to the field of cement additives, in particular to a cement grinding aid and its application in improving the strength of high-alumina clinker cement autoclaved curing. Background technique [0002] Traditional cement grinding aids accelerate the hydration of cement through physical grinding aid and chemical action, thereby improving the strength of cement at all ages. However, such grinding aids have a limited effect on improving the autoclaved curing strength, and can only increase the autoclaved curing strength of P.II cement to about 54MPa, while the general pipe pile factory requires the autoclaved curing strength of P.II cement to be greater than 54MPa . In addition, for P.II cement with clinker aluminum content greater than 6%, traditional grinding aids can only increase the autoclave curing strength by increasing the content of alcohol amine, resulting in an increase in production costs. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/26C04B103/52
CPCC04B40/0039C04B2103/52C04B24/026C04B22/0093C04B24/10C04B24/2641C04B22/147C04B22/124
Inventor 滕灼光何坤富陶从喜曾荣蔡礼明
Owner 华润水泥技术研发(广西)有限公司
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