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Manufacturing method of reinforced concrete protection layer

A technology of reinforced concrete and a manufacturing method, which is applied in the processing of building materials, construction, building structure, etc., can solve the problems of inability to protect, increase the main reinforcement, corrosion, etc., and achieve high quality, convenient construction, and increased durability. Effect

Inactive Publication Date: 2016-10-26
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These requirements bring great difficulty to the construction process, and if the construction accuracy is slightly deviated, it will not only fail to achieve the purpose of protection, but will increase the probability of corrosion of the main reinforcement

Method used

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  • Manufacturing method of reinforced concrete protection layer
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Embodiment Construction

[0020] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] The manufacture method of reinforced concrete protective layer of the present invention, comprises the steps:

[0022] 1) Add non-metallic fibers into the concrete, so that the non-metallic fibers are not directional distributed in the ordinary concrete, forming fiber concrete 1. Non-metallic fibers are made of polypropylene fibers, and the amount of non-metallic fibers in the concrete is 0.8-1.5kg / m 3 . In this way, adding non-metallic fibers into the concrete can effectively prevent the occurrence of concrete shrinkage cracks and significantly improve the mechanical properties of concrete. Because the fiber itself has natural hydrophilicity, excellent grip and high toughness and strength. In addition, the non-directional distribution of non-metallic fibers in ordinary concrete can effectively reduce the stres...

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Abstract

The invention relates to a manufacturing method of a reinforced concrete protection layer. The manufacturing method comprises the following steps that firstly, non-metal fibers are added to common concrete, so that fiber concrete is obtained; secondly, the fiber concrete is poured to the outside of a main stress steel bar, and a protection layer with a certain thickness is formed; and a plurality of protrusions are arranged on one side face of the protection layer, and the side face with the protrusions is connected with the common concrete plane of a building structure. By the adoption of the manufacturing method, the situations that in the service life period of the whole structure, the main stress steel bar is badly rusted due to outside corrosive media entering the steel bar, the section loss is caused, and the safety of the structure is threatened can be avoided; and the protection layer has the anti-cracking and anti-disengagement functions, and structural durability is improved.

Description

technical field [0001] The invention belongs to the field of construction, and in particular relates to a method for manufacturing a reinforced concrete protective layer. Background technique [0002] In the reinforced concrete structure, a certain thickness of concrete protective layer should be set on the surface of the steel bar. The purpose is to make the steel bar surface in the alkaline environment of concrete to produce a passivation film, thereby preventing the steel bar from being corroded and endangering the structural safety. With the gradual carbonation reaction between alkaline concrete materials and carbon dioxide in the air, the alkaline protective effect of concrete will gradually disappear; in addition, in more severe environments, external chloride ions and other ions that have a corrosive effect on steel bars will also pass through the diffusion effect Gradually invade the protective layer, and when the ions on the surface of the steel bar accumulate to a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/00E04G21/02
CPCE04G21/00E04G21/02
Inventor 李荣鹏王晓东王宝树
Owner CHINA NUCLEAR POWER ENG CO LTD