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A kind of water-based concrete hydration temperature rise inhibitor and preparation method thereof

A concrete and inhibitor technology, applied in the field of building materials, can solve problems such as difficulty in making completely water-soluble products or aqueous solutions, and difficulty in controlling molecular weight

Active Publication Date: 2022-02-08
ZHENJIANG SOBUTE NEW MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the above-mentioned prior art focuses on dextrin or modified dextrin, the molecular weight is difficult to control, and it is difficult to make completely water-soluble products or aqueous solutions.

Method used

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  • A kind of water-based concrete hydration temperature rise inhibitor and preparation method thereof
  • A kind of water-based concrete hydration temperature rise inhibitor and preparation method thereof
  • A kind of water-based concrete hydration temperature rise inhibitor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Add 18g of glucose and 0.08g of sodium hydroxide into the autoclave, heat it to 180°C after vacuuming, slowly introduce 968g of ethylene oxide, and control the pressure during the whole process to not exceed 0.4MPa. After the reaction, polyether 1 is obtained. Add 10 g of diethanolamine and 40 g of an aqueous solution containing 10 g of aluminum fluoride trihydrate to 50 g of polyether 1, and stir evenly to obtain the water-based concrete hydration temperature rise inhibitor 1.

Embodiment 2

[0019] Add 34.2g of sucrose and 1.12g of potassium hydroxide into the autoclave, heat it to 200°C after vacuuming, slowly introduce 4.4g of ethylene oxide, and control the pressure during the whole process to not exceed 0.4MPa. After the reaction, polyether 2 is obtained. Add 5 g of diethanolamine and 45 g of an aqueous solution containing 5 g of magnesium fluorosilicate to 50 g of polyether 2, and stir evenly to obtain water-based concrete hydration temperature rise inhibitor 2.

Embodiment 3

[0021] Add 18.2g of mannitol and 0.24g of sodium hydride into the autoclave, heat it to 120°C after vacuuming, slowly introduce 100g of ethylene oxide, and control the pressure during the whole process to not exceed 0.4MPa. After the reaction, polyether 3 is obtained. Add 5 g of diethanolamine, 5 g of triisopropanolamine and 10 g of water to 80 g of polyether 3, and stir evenly to obtain water-based concrete hydration temperature rise inhibitor 3.

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Abstract

The invention relates to a concrete anti-cracking temperature control admixture in the field of building materials, in particular to an aqueous concrete hydration temperature rise inhibitor and its preparation method and application; Composed of fluorine-containing additives, it is suitable for cement paste, mortar and concrete, especially crack-resistant concrete. The concrete hydration temperature rise inhibitor disclosed by the invention has complete water solubility, is convenient to use, can reduce the heat release rate of cement hydration, and reduces the risk of concrete cracking.

Description

technical field [0001] The invention relates to an aqueous concrete hydration temperature rise inhibitor and a preparation method and application thereof, which belong to the category of concrete temperature control anti-cracking admixtures in the field of building materials. Background technique [0002] Cement concrete is the most widely used building material in the world today, and is widely used in municipal, bridge, railway, water conservancy and hydropower projects. Cement concrete has the advantages of cheap price, convenient pouring and molding, high compressive strength and good durability; at the same time, concrete is a brittle material with disadvantages such as low flexural strength and easy cracking. After water is added to the cement, a large amount of heat is released during the hydration reaction with water, which causes the temperature of the concrete structure to rise rapidly in a short period of time since it is poured. This phenomenon is especially sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/32
CPCC04B40/0046C04B24/32C04B24/122C04B22/126
Inventor 王瑞王文彬储阳张守治陆安群王育江田倩
Owner ZHENJIANG SOBUTE NEW MATERIAL CO LTD