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Mass concrete hydration temperature rise inhibitor as well as preparation method and application thereof

A technology of mass concrete and inhibitor, which is applied in the field of concrete anti-cracking temperature control admixture and the hydration temperature rise inhibitor of mass concrete, which can solve the problem of difficulty in reducing temperature peaks and so on.

Inactive Publication Date: 2020-07-07
JIANGSU SOBUTE NEW MATERIALS +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problem that mass concrete is difficult to reduce the temperature peak, the present invention proposes a hydration temperature rise inhibitor suitable for mass concrete, its preparation method and its application

Method used

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  • Mass concrete hydration temperature rise inhibitor as well as preparation method and application thereof

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Effect test

Embodiment 1

[0018] Add 10g of paraffin wax with melting points of 30°C, 40°C, and 70°C into the flask, heat to 80°C to melt, keep the temperature and add 65g of porous ceramsite, mix well, lower the temperature to 30°C, add 5g of number average molecular weight Be the starch polysaccharide of 5000-20000, obtain product embodiment 1 after mixing.

Embodiment 2

[0020] Add 5g of paraffin wax with a melting point of 60°C and 5g of barium hydroxide octahydrate into the flask, heat to 90°C to melt, keep the temperature and add 70g of porous ceramsite, mix well, lower the temperature to 30°C, add 20g of number average molecular weight Be the starch polysaccharide of 5000-30000, obtain product embodiment 2 after mixing.

Embodiment 3

[0022] Add 10g of barium hydroxide octahydrate to the flask, heat it to 90°C to melt it, keep the temperature and add 85g of porous ceramsite, after mixing evenly, lower the temperature to 30°C, add 5g of starch polymer with a number average molecular weight of 10000-30000 Sugar, after mixing, product embodiment 3 is obtained.

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Abstract

The invention discloses a mass concrete hydration temperature rise inhibitor and a preparation method thereof. The inhibitor is composed of porous ceramsite, a phase change material and a starch-basedhydration heat regulation and control material; the particle size of the porous ceramsite is 1-25 mm, and the surface pore diameter of the porous ceramsite is 10-300 [mu] m; the phase change materialis one or a mixture of two of paraffin and barium hydroxide octahydrate in any proportion. By utilizing the characteristics of porous structure and relatively closed gaps of concrete, porous ceramsite is used as a carrier to load a phase change material and absorb heat generated by hydration of large-volume concrete, and a hydration heat regulation and control technology is combined to reduce thehydration heat release rate of cement, delay the temperature rise rate of the large-volume concrete and reduce the temperature peak of the large-volume concrete; meanwhile, the phase-change energy storage material adopted in the technology plays a role in heat compensation in the temperature drop stage of the mass concrete, the temperature difference between the inner surface and the outer surface of a concrete structure can be reduced, and the non-penetrating surface cracking phenomenon is reduced.

Description

technical field [0001] The invention relates to a large-volume concrete hydration temperature rise inhibitor, a preparation method and an application thereof, and belongs to the category of concrete anti-cracking temperature control 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 and other fields. As a kind of artificial stone, concrete is mainly composed of cement hydration products, sand, stone and other materials. It has the advantages of high compressive strength, strong plasticity, and low price. At the same time, as a porous material, cement concrete has good thermal insulation performance and thermal conductivity. characteristics such as poor sex. Due to the large and fast heat release of cement hydration, a large amount of heat will accumulate in a short period of time after conc...

Claims

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Application Information

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IPC IPC(8): C04B24/38
CPCC04B40/0046C04B24/36C04B18/027C04B24/38C04B22/064
Inventor 刘加平田倩李磊张守治王育江姚婷陆安群王瑞王文彬
Owner JIANGSU SOBUTE NEW MATERIALS
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