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Drag-reducing and roughness-reducing method for concrete surface coating of water delivery building

A concrete surface and building technology, which is applied in the direction of architecture and infrastructure engineering, can solve the problems of drag reduction and roughness reduction technology that have not been seen in relevant research and reports, and achieve the effect of avoiding reinforcement, reconstruction, demolition and reconstruction, and elimination of concrete diseases

Inactive Publication Date: 2020-11-03
宁夏回族自治区水利工程建设中心 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Through the research and analysis of domestic and foreign data, there is no relevant research and report on the use of drag and roughness reduction technology in long-distance water transmission projects at home and abroad.

Method used

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  • Drag-reducing and roughness-reducing method for concrete surface coating of water delivery building

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Embodiment Construction

[0024] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0025] The construction process of the method for reducing drag and roughness of the concrete surface coating of the water-conveying building of the present invention: cleaning and grinding the concrete surface → cleaning → repairing holes with special putty → applying special primer interface agent → applying SK scraping polyurea → maintenance. Processing diagrams such as figure 1 shown.

[0026] The specific construction process is as follows:

[0027] (1) Substrate treatment: Grind the concrete surface of the panel with an angle grinder, wash the dust and scum on the surface with a high-pressure water gun, and after the water is c...

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Abstract

The invention provides a drag-reducing and roughness-reducing method for concrete surface coating of a water delivery building. The drag-reducing and roughness-reducing method comprises the followingsteps: (1) treating a substrate; and polishing and filling the concrete surface of a panel on the upstream face; (2) brushing a base coat interface agent; (3) brushing SK scraping polyurea; and (4) maintaining SK scraping polyurea. According to the drag-reducing and roughness-reducing method, roughness reducing coating series materials suitable for an aqueduct structure and different environmentalconditions are used, a construction process and a quality control standard are established in a matched mode, the aqueduct roughness coefficient can be decreased by 20% or above, the water delivery capacity can be improved by 25% or above, and reinforcing transformation and dismantling reconstruction are avoided. Technical surpassing of concrete disease elimination, durability improvement, roughness reduction and flow increase of an old water delivery building is achieved at a time.

Description

technical field [0001] The invention belongs to the technical field of drag reduction and roughness reduction in water conservancy projects, and in particular relates to a method for reducing drag and roughness of concrete surface coatings of water transport buildings. Background technique [0002] Coating drag reduction relies on changing the surface properties of the wall surface, such as hydrophobicity and oleophobicity, which weakens the affinity between the object wall surface and the liquid medium, directly reduces the shear stress of the fluid on the wall surface, and increases the laminar flow boundary layer. The thickness makes the transition point from laminar flow to turbulent flow move backward. The state of the wall surface is different, which reflects the different influence on the laminar boundary layer and the laminar boundary layer. [0003] At present, domestic research on drag and roughness reduction is mostly used in aircraft, submarines, torpedoes and o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D15/02
CPCE02D15/02
Inventor 余自业顾宁夏世法潘自林王福升杨庆胜马宇张海晨吴晓波陈文婷陶东周涛樊小明尹向存于春江王新熙白璐尹亮魏凯李晓刚赵波张正马涛徐潇李云峰任亮
Owner 宁夏回族自治区水利工程建设中心
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