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A kind of low hydration heat Portland cement and preparation method thereof

A Portland cement, low hydration heat technology, applied in cement production and other directions, can solve the problems of reducing cement hydration heat deficiency, reducing cement hydration heat needs to be optimized, etc., to reduce nucleation rate and hydration heat. , the effect of inhibiting hydration

Active Publication Date: 2022-07-01
厦门美益建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, the inventor believes that its existing admixtures are insufficient for reducing the heat of hydration of cement, and its reduction of the heat of hydration of cement still needs to be optimized

Method used

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  • A kind of low hydration heat Portland cement and preparation method thereof

Examples

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Comparison scheme
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preparation example 1

[0041] A kind of admixture, its each raw material and each raw material consumption are as shown in table 1, and its preparation method is as follows:

[0042] Add liquid water glass to the water, stir until dissolved, then add triethanolamine, ethylenediisopropanolamine and succinic acid, stir evenly, and then the admixture can be obtained.

[0043] Each raw material and each raw material consumption (kg) of table 1 preparation example 1-4

[0044] Preparation Example 1 Preparation Example 2 Preparation Example 3 Preparation Example 4 Triethanolamine 8 9 10 11 liquid water glass 6 5 4 3 Monoethylenediisopropanolamine 2 3 4 5 Succinic acid 4 3 2 1 water 4 3 2.5 2

preparation example 5

[0046] A kind of admixture, the difference from preparation example 3 is that the raw material added also includes the sodium hexametaphosphate of 0.3kg, and its preparation steps are as follows:

[0047] Add liquid water glass to the water, stir until dissolved, then add triethanolamine, ethylenediisopropanolamine and succinic acid, stir evenly, and then the admixture can be obtained.

preparation example 6

[0049] A kind of admixture, the difference from Preparation Example 5 is that the quality of the added sodium hexametaphosphate is 0.5kg, and the remaining steps are the same as Preparation Example 5.

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Abstract

The application relates to the field of building materials, and specifically discloses a low hydration heat Portland cement, which is prepared from the following raw materials by weight: 1-5 parts of fly ash, 3-7 parts of slag, tile sheet 6-10 parts, 3-7 parts of gypsum, 6-10 parts of mineral powder, 0.1-0.4 parts of admixture, 68-72 parts of Portland cement clinker; the admixture is prepared from the following raw materials by weight : 8-11 parts of triethanolamine, 3-6 parts of liquid water glass, 2-5 parts of ethylenediisopropanolamine, 1-4 parts of succinic acid and 2-4 parts of water; it has the function of reducing the heat of hydration of cement In addition, the present application also provides a preparation method of Portland cement with low hydration heat.

Description

technical field [0001] The present application relates to the field of building materials, more particularly, it relates to a low hydration heat Portland cement and a preparation method thereof. Background technique [0002] Cement hydration heat is the heat released by the action of cement and water. The heat of hydration will cause a large amount of heat to be generated inside the concrete. In addition, the concrete is a poor conductor of heat. The heat generated by the heat of hydration is not easy to conduct to the outside world, so that a large amount of heat is generated inside the concrete. The high temperature causes volume expansion, and the surface heat dissipation is relatively fast, resulting in a lower external temperature of the concrete, and the volume of the concrete surface shrinks relative to the interior. Cracks occur in the surface layer, which seriously affects the durability of concrete. [0003] The hydration of cement includes four mineral phases, n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/28C04B7/147C04B7/24C04B7/04C04B7/36C04B24/12
CPCC04B7/243C04B7/04C04B7/1535C04B7/36C04B40/0039C04B24/122C04B12/04C04B24/04Y02P40/10
Inventor 李仰根范训熠范桂能
Owner 厦门美益建材有限公司