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Carbon fiber self-stress concrete pressure pipeline material

A technology of pressure pipes and carbon fibers, which is applied in the fields of fiber chemical characteristics, textiles and papermaking, etc. It can solve problems such as poor corrosion resistance, high welding process requirements, and external leakage of water supply pipes, so as to achieve enhanced mechanical properties and durability, and good chemical resistance. Corrosion properties, effects of reducing temperature shrinkage and drying shrinkage

Inactive Publication Date: 2018-02-23
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Plastic pipes are expensive, cumbersome to construct, and will age
Cast iron pipes have poor corrosion resistance and require high welding processes
Steel fiber self-stressing concrete pressure pipes have poor corrosion resistance, low pressure capacity and impermeability
These problems will lead to frequent damage and repair of water supply and drainage pipes, and water supply pipes will leak out during water delivery, resulting in waste of water resources; the seepage of sewage in sewage pipes will cause pollution to the surrounding environment

Method used

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  • Carbon fiber self-stress concrete pressure pipeline material
  • Carbon fiber self-stress concrete pressure pipeline material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A carbon fiber self-stressing concrete pressure pipe material, the carbon fiber self-stressing concrete pressure pipe material per cubic meter includes the following raw materials: C30 cement concrete 2178kg, polyacrylonitrile-based carbon fiber 26kg and UEA expansion agent 191kg, wherein, C30 cement concrete contains cement 381kg, water 169kg, sand 615kg and stone 1013kg, the cement is ordinary Portland cement P.O 42.5, the sand is medium sand with a fineness modulus of 2.51, and the maximum particle size of the stone is not greater than 25mm; the length of the polyacrylonitrile-based carbon fiber is The mass ratio of 4mm polyacrylonitrile-based carbon fiber to 9mm-length polyacrylonitrile-based carbon fiber is 7:4.

[0025] The preparation method of the polyacrylonitrile-based carbon fiber in the above-mentioned carbon fiber self-stressing concrete pressure pipe material is as follows:

[0026] Step 1, extract propane from crude oil, and oxidize to obtain acrylonitril...

Embodiment 2

[0034] A carbon fiber self-stressing concrete pressure pipe material, including the following raw materials: C30 cement concrete 2178kg, polyacrylonitrile-based carbon fiber and UEA expansion agent 174kg, wherein, C30 cement concrete contains 381kg of cement, 169kg of water, 615kg of sand and 1013kg of stone; The mass percentage of acrylonitrile-based carbon fiber in C30 cement concrete is 0.17%, that is, the volume percentage of polyacrylonitrile-based carbon fiber in carbon fiber self-stressing concrete pressure pipe material is 0.2%; the length of polyacrylonitrile-based carbon fiber in polyacrylonitrile-based carbon fiber is 4mm The mass ratio of polyacrylonitrile-based carbon fiber with a length of 9mm is 7:4.

Embodiment 3

[0036] A carbon fiber self-stressing concrete pressure pipe material, including the following raw materials: C30 cement concrete 2178kg, polyacrylonitrile-based carbon fiber and UEA expansion agent 174kg, wherein, C30 cement concrete contains 381kg of cement, 169kg of water, 615kg of sand and 1013kg of stone; The mass percentage of acrylonitrile-based carbon fiber in C30 cement concrete is 0.34%, that is, the volume percentage of polyacrylonitrile-based carbon fiber in carbon fiber self-stressing concrete pressure pipe material is 0.4%; the length of polyacrylonitrile-based carbon fiber is 4mm The mass ratio of polyacrylonitrile-based carbon fiber with a length of 9mm is 7:4.

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Abstract

The invention discloses a carbon fiber self-stress concrete pressure pipeline material. The material is prepared from cement concrete, carbon fiber and an expanding agent, wherein the carbon fiber accounts for 0.17-1.36% of the cement concrete by mass, the expanding agent accounts for 6-10% of the cement concrete by mass, and the length of the carbon fiber is 4 mm and / or 9 mm. No longitudinal steel bar or hooped steel bar needs to be added into the carbon fiber self-stress concrete pressure pipeline material, the cement concrete, carbon fiber and expanding agent are directly blended to be uniform, model is poured, maintenance is performed, the material can be adopted as a pressure pipe for use; the carbon fiber self-stress concrete pressure pipeline material can simplify the construction procedure of the pressure pipeline, time is shortened, and due to the fact that no steel bar limit exists, the pressure pipeline is poured more compactly, and the anti-penetrability is better.

Description

technical field [0001] The invention relates to the technical field of pipelines, in particular to a carbon fiber self-stressing concrete pressure pipeline material. Background technique [0002] With the intensification of urbanization and the construction of national long-distance water transmission projects, water supply and drainage pipes are playing an increasingly important role in social life. Commonly used water supply and drainage pipes include plastic pipes, cast iron pipes, steel fiber self-stressed concrete pressure pipes etc. Plastic pipes are expensive, cumbersome to construct, and will age. Cast iron pipes have poor corrosion resistance and require high welding processes. Steel fiber self-stressing concrete pressure pipes have poor corrosion resistance, low pressure capacity and impermeability. These problems will lead to frequent damage and repair of the water supply and drainage pipes, and the water supply pipes will leak out during the water delivery, re...

Claims

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Application Information

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IPC IPC(8): C04B28/04D01F9/22C04B111/34C04B111/20
CPCC04B28/04C04B2111/20C04B2111/343C04B2201/50D01F9/22C04B14/02C04B14/06C04B14/386C04B22/06C04B22/148C04B22/142
Inventor 彭挺刘志航张衡张星婕李东东朱友信胡旭刘洁王蒙阳郭雷吴文昌谢利涛张明
Owner CHANGAN UNIV
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