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Intermediate-hydration-heat composite cement and preparation method thereof

A technology of thermal compounding and cement, which is applied in the field of building materials, can solve the problems of not being able to be used as dam cement, general strength, low heat of hydration, etc., to avoid the influence of molding and performance, improve strength performance, and reduce heat of hydration Effect

Inactive Publication Date: 2015-07-08
苏州市德莱尔建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the technical solution is to directly grind and mix cement clinker and gypsum to prepare medium heat Portland cement. During the preparation of cement clinker, the calcium, silicon, iron and magnesium in the clinker are relatively large in China. High, low aluminum content, low heat of hydration, but average early strength and long-term strength, and cannot be used as dam cement

Method used

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  • Intermediate-hydration-heat composite cement and preparation method thereof
  • Intermediate-hydration-heat composite cement and preparation method thereof
  • Intermediate-hydration-heat composite cement and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A medium-heat composite cement, comprising the following components in mass percentages:

[0028] (1) Portland cement clinker 40.0%%;

[0029] (2) Aluminate cement clinker 15.0%;

[0030] (3) Nano tin oxide 7.0%;

[0031] (4) Glass fiber 13.0%;

[0032] (5) Silicon fume 10.0%;

[0033] (6) Struvite 10.0%;

[0034] (7) Desulfurization gypsum 5.0%.

[0035] According to the preparation method provided by the invention, medium-heat composite cement is prepared, and the preparation steps are as follows:

[0036] (1) Material preparation: Accurately weigh each component according to the mass content of each component;

[0037] (2) Grinding: Grinding the components with a particle size greater than 1mm until the average particle size reaches 200um;

[0038] (3) Premixing: Mix the components together and stir evenly;

[0039] (4) Grinding: Grinding the powdery material obtained in step (3) until the average particle size is 85um, that is, medium heat composite cement i...

Embodiment 2

[0041] A medium-heat composite cement, comprising the following components in mass percentages:

[0042] (1) Portland cement clinker 55.0%;

[0043] (2) Aluminate cement clinker 15.0%;

[0044] (3) Nano tin oxide 5.0%;

[0045] (4) Glass fiber 5.0%;

[0046] (5) Silicon fume 5.0%;

[0047] (6) Struvite 10.0%;

[0048] (7) Desulfurization gypsum 5.0%.

[0049] According to the preparation method provided by the invention, medium-heat composite cement is prepared, and the preparation steps are as follows:

[0050] (1) Material preparation: Accurately weigh each component according to the mass content of each component;

[0051] (2) Grinding: Grinding the components with a particle size greater than 1mm until the average particle size reaches 200um;

[0052] (3) Premixing: Mix the components together and stir evenly;

[0053] (4) Grinding: Grinding the powdery material obtained in step (3) until the average particle size is 85um, that is, medium heat composite cement is o...

Embodiment 3

[0055] A medium-heat composite cement, comprising the following components in mass percentages:

[0056] (1) Portland cement clinker 45.0%;

[0057] (2) Aluminate cement clinker 15.0%;

[0058] (3) Nano tin oxide 8.0%;

[0059] (4) Glass fiber 10.0%;

[0060] (5) Silicon fume 10.0%;

[0061] (6) Struvite 7.0%;

[0062] (7) Desulfurization gypsum 5.0%.

[0063] According to the preparation method provided by the invention, medium-heat composite cement is prepared, and the preparation steps are as follows:

[0064] (1) Material preparation: Accurately weigh each component according to the mass content of each component;

[0065] (2) Grinding: Grinding the components with a particle size larger than 1mm until the average particle size reaches 100-200um;

[0066] (3) Premixing: Mix the components together and stir evenly;

[0067] (4) Grinding: Grinding the powdery material obtained in step (3) until the average particle size is 30-85um, that is, medium heat composite ceme...

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Abstract

Disclosed are intermediate-hydration-heat composite cement and a preparation method thereof, which relate to the field of a building material. The composite cement comprises the following components, by mass: (1) 40.0-55.0% of portland cement clinker, (2) 10.0-20.0% of aluminate cement clinker, (3) 2.1-8.0% of nanometer tin oxide, (4) 5.0-15.0% of glass fiber, (5) 5.0-10.0% of silica fume, (6) 5.0-10.0% of struvite, and (7) 2.5-5.0% of gypsum. The preparation method of the intermediate-hydration-heat composite cement comprises: (1) material preparation, (2) grinding, (3) pre-mixing, and (4) powder grinding. The intermediate-hydration-heat composite cement provided in the invention is prepared by utilizing both characteristics of the portland cement clinker and the aluminate cement clinker; the early strength and long-term strength of the materials are improved via a synergistic effect among each component; the hydration heat is effectively reduced; and affects of hydration heat on the molding and properties of the cement are avoided.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a medium-heat composite cement and a preparation method of the cement. Background technique [0002] Medium-heat compound cement is a kind of hydraulic cementitious material with medium heat of hydration that combines two or more cement clinkers together. At present, medium-heat composite cement is mostly used in dam cement, and it is a more commonly used special cement. [0003] Medium-heat cement has the advantages of low heat of hydration, strong sulfate resistance, low drying shrinkage, and good wear resistance. In order to better improve the performance of medium-heat cement, more than two kinds of cement clinker are added to the mixture to prepare medium-heat composite cement, which can effectively improve the strength and hydraulic performance of cement. [0004] The patent document "High Performance Dam Portland Cement" with application number 201110143708....

Claims

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Application Information

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IPC IPC(8): C04B11/30
Inventor 计慷
Owner 苏州市德莱尔建材科技有限公司
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