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Preparation method of high-hardness wear-resistant super-hydrophobic concrete

A super-hydrophobic, high-hardness technology, applied in the manufacture of tools, ceramic molding machines, etc., can solve the problems of easy adhesion of microorganisms, poor freeze-thaw resistance, and easy corrosion of steel bars, and achieve simple process steps, improved hardness and wear resistance performance, excellent anti-icing effect

Active Publication Date: 2017-10-13
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] In order to overcome the shortcomings of ordinary concrete, such as easy freezing in freezing rain, poor freeze-thaw resistance, easy corrosion of internal steel bars, easy adhesion of microorganisms, and poor wear resistance of ordinary superhydrophobic coatings, which are difficult to be practically applied to concrete surfaces, the invention provides a high-hardness , Preparation method of high wear resistance superhydrophobic concrete

Method used

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  • Preparation method of high-hardness wear-resistant super-hydrophobic concrete
  • Preparation method of high-hardness wear-resistant super-hydrophobic concrete
  • Preparation method of high-hardness wear-resistant super-hydrophobic concrete

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Embodiment 1

[0026] (1) Take 50g of PO42.5 ordinary Portland cement, 50g of fine sand, 25ml of water, and 0.3g of fluorosilane, put them in a mixer and stir for 60min at a stirring speed of 250r / min to form cement slurry.

[0027] (2) Pour the cement slurry after mixing into a plastic petri dish, paste the 80-mesh red copper mesh on the lower surface of the wooden board with a pressure of 10Pa with strong double-sided adhesive, and cover the lower surface of the wooden board covered with copper mesh on the mold superior. After being naturally air-dried, remove the board to obtain a superhydrophobic concrete block with a water contact angle of 158±0.8° and a rolling angle of 6.1±1.2° (such as figure 1 , figure 2 , image 3 shown).

[0028] (3) In order to verify the anti-freezing rain and anti-icing performance of the super-hydrophobic concrete block, the super-hydrophobic concrete block and the ordinary concrete block were placed in the environmental chamber with an inclination of 30°,...

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Abstract

The invention provides a preparation method of high-hardness wear-resistant super-hydrophobic concrete, and belongs to the technical field of building material preparation. The preparation method comprises: stirring and mixing cement, fine sand, water and a water-soluble low surface energy material to form a cement slurry; pouring the cement slurry into a mold, and flatly adhering a metal mesh to the lower surface of a pressure plate; making the lower surface of the pressure plate cover the mold; and carrying out natural air drying or cure drying to obtain the super-hydrophobic concrete. According to the present invention, the obtained super-hydrophobic concrete has advantages of high hardness, high wear resistance, freezing rain resistance, icing resistance, freeze thawing resistance, self-cleaning property, corrosion resistance and the like, and can significantly improve the durability of highway concrete, freezing rain zone pavement concrete, and coastal zone bridge concrete in extremely cold climates.

Description

technical field [0001] The application relates to a preparation method of high-hardness wear-resistant superhydrophobic concrete, and the technical field of building material preparation. Background technique [0002] Concrete is widely used in building, bridge and road construction because of its high strength, high hardness, good durability, can be made into any shape and cheap price. But the hydrophilic and porous structure of the surface of ordinary concrete can easily reduce the durability of concrete in some environments and cause disasters. For example, the concrete pavement of the expressway in the extremely cold climate is often broken and peeled off due to the volume expansion of freezing and thawing after absorbing water; the concrete pavement in the freezing rain zone is easy to freeze and cause traffic accidents; - Corrosion of internal reinforcing ribs reduces the bearing capacity and increases the risk of bridge collapse; the concrete surface of the building ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/08C04B28/02B28B1/29C04B111/27C04B111/20C04B111/76
CPCB28B1/29C04B28/021C04B28/04C04B28/08C04B2111/0075C04B2111/20C04B2111/27C04B2111/29C04B2111/76C04B14/068C04B24/42
Inventor 宋金龙韩正金刘新黄柳刘子艾邢英杰
Owner DALIAN UNIV OF TECH
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