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Ultraviolet radiation resistant concrete and preparation method thereof

A concrete and anti-ultraviolet technology, which is applied in the field of building materials, can solve problems such as the failure of the protective effect of the reinforced concrete protective layer, the deterioration of concrete carbonation, and the impact of concrete stiffness, etc., to achieve the effects of inhibiting migration, strengthening surface strength, and reducing processing workload

Active Publication Date: 2021-12-07
云南中建西部建设有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under the condition of strong ultraviolet rays, the carbonation of concrete will deteriorate sharply, which will lead to the failure of the protective effect of the reinforced concrete protective layer and other problems
In view of the above problems, by increasing the thickness of the concrete protective layer, etc., the stiffness of the concrete will be affected to a certain extent, and the brittleness will be increased, which is not good for the concrete structure; while the conventional concrete surface coating protection process is not only cumbersome in construction, but also greatly increases the engineering cost. cost

Method used

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  • Ultraviolet radiation resistant concrete and preparation method thereof
  • Ultraviolet radiation resistant concrete and preparation method thereof
  • Ultraviolet radiation resistant concrete and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] A kind of anti-ultraviolet radiation concrete, its preparation method comprises the steps:

[0039] 1) Weigh each raw material according to the proportion, and each raw material and its proportion by weight include: 280 parts of cement, 100 parts of modified high-titanium heavy slag powder, 10 parts of silica fume, 1030 parts of gravel, high-titanium heavy slag sand G1 950 parts, 6.8 parts of admixture, 2 parts of water-based polyurethane emulsion, 180 parts of water; see Table 2 for specific formula requirements;

[0040] 2) Mix 90 parts of mixing water and 1 part of water-based polyurethane emulsion with gravel and silica fume for 20 seconds, then add cement, modified high-titanium heavy slag powder, high-titanium heavy slag sand and admixtures for mixing 45s, and finally mixed with the remaining mixing water and water-based polyurethane emulsion and stirred for 35s. By controlling the last two feeding conditions and stirring time, the pressure bleeding rate of the ob...

Embodiment 2

[0042] A kind of anti-ultraviolet radiation concrete, its preparation method comprises the steps:

[0043]1) Weigh each raw material according to the proportion, and each raw material and its proportion by weight include: 280 parts of cement, 100 parts of modified high-titanium heavy slag powder, 10 parts of silica fume, 1030 parts of gravel, high-titanium heavy slag sand G2 950 parts, 6.8 parts of admixture, 3.5 parts of water-based polyurethane emulsion, 180 parts of water; see Table 2 for specific formula requirements;

[0044] 2) Mix 90 parts of mixing water and 1.75 parts of water-based polyurethane emulsion with gravel and silica fume for 20 seconds, then add cement, modified high-titanium heavy slag powder, high-titanium heavy slag sand and admixture and mix for 45 seconds. Finally, add the remaining mixing water and water-based polyurethane emulsion and stir for 45s. By controlling the last two feeding conditions and stirring time, the pressure bleeding rate of the res...

Embodiment 3

[0046] A kind of anti-ultraviolet radiation concrete, its preparation method comprises the steps:

[0047] 1) Weigh each raw material according to the proportion, and each raw material and its proportion by weight include: 280 parts of cement, 100 parts of modified high-titanium heavy slag powder, 10 parts of silica fume, 1030 parts of gravel, high-titanium heavy slag sand G3 950 parts, 6.8 parts of admixture, 5 parts of water-based polyurethane emulsion, 180 parts of water; see Table 2 for specific formula requirements;

[0048] 2) Mix 90 parts of mixing water and 2.5 parts of water-based polyurethane emulsion with gravel and silica fume for 20 seconds, then add cement, modified high-titanium heavy slag powder, high-titanium heavy slag sand and admixture and mix for 45 seconds. Finally, add the remaining mixing water and water-based polyurethane emulsion and stir for 40s. By controlling the last two additions and stirring time, adjust the pressure bleeding rate of the resulti...

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Abstract

The invention discloses ultraviolet radiation resistant concrete, which is prepared from the following components in parts by weight: 250 to 350 parts of cement, 100 to 150 parts of modified high-titanium heavy slag powder, 10 to 20 parts of silica fume, 950 to 1100 parts of gravel, 850 to 1050 parts of high-titanium heavy slag sand, 6 to 12 parts of an admixture, 2 to 5 parts of waterborne polyurethane emulsion and 155 to 180 parts of water. According to the invention, the modified high-titanium heavy slag and the waterborne polyurethane emulsion are taken as main modification raw materials, so that on the basis of ensuring good working performance and mechanical property, the risks of corrosion of carbonized steel bars of reinforced concrete under the condition of strong ultraviolet rays and the like can be effectively reduced; and the related preparation method is relatively simple, relatively low in cost and suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an anti-ultraviolet radiation concrete and a preparation method thereof. Background technique [0002] In 2018, under the background of western development, infrastructure construction and the promotion of green economic development on the Qinghai-Tibet Plateau, the planning and construction of the Sichuan-Tibet Railway will be launched in an all-round way, and infrastructure construction in high-altitude strong ultraviolet areas and urban construction and development in the Qinghai-Tibet Plateau will soon begin. [0003] Under the condition of strong ultraviolet rays, the carbonation of concrete will deteriorate sharply, which will lead to problems such as the failure of the protective effect of the reinforced concrete protective layer. In view of the above problems, by increasing the thickness of the concrete protective layer, etc., the stiffness of the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B18/14C04B111/20
CPCC04B28/04C04B18/141C04B2111/20C04B2201/50C04B18/146C04B14/02C04B24/282C04B2103/302Y02W30/91
Inventor 兰聪王军张远袁文韬李晓欢唐天明刘东张武宗
Owner 云南中建西部建设有限公司
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