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Carbon fiber concrete pipe and manufacture method thereof

A technology of carbon fiber concrete and concrete pipes, applied in the direction of pipes, rigid pipes, manufacturing tools, etc., can solve the problems of low strength of concrete pipes, carbon fiber segregation, etc., and achieve the effect of light weight, good plasticity, and elimination of segregation

Inactive Publication Date: 2010-01-06
浙江处州建设管理有限公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a carbon fiber concrete pipe and its preparation method to solve the problem of concrete and carbon fiber segregation during the shrinkage process of concrete and the problem of low strength of non-prestressed concrete pipe

Method used

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Embodiment Construction

[0021] Concrete pipe ingredients are cement, sand, steel fiber, UEA expansion agent. The amount of cement and sand should be proportioned according to the concrete strength requirements and determined according to the test results. The steel fiber adopts spiral steel fiber, the steel fiber content is 1% of the cement weight, and the UEA expansion agent is 0.8% of the cement weight. Due to its special twisted shape, the spiral steel fiber has a strong grip in concrete and can obtain high self-stress.

[0022] In order to meet the needs of the production process, the inner mold adopts rubber mold, and the outer mold adopts steel mold.

[0023] The carbon fiber concrete pipe and its preparation method comprise the following steps:

[0024] (1) Carbon fiber is pasted inside the steel mold.

[0025] A layer of carbon fiber surrounds the steel mold.

[0026] (2) Place the steel skeleton.

[0027] (3) Pouring concrete.

[0028] (4) pressurization.

[0029] Use rubber inner mol...

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Abstract

The invention discloses a carbon fiber concrete pipe and a manufacture method thereof. The manufacture method is characterized by comprising the following steps: (1) sticking carbon fibers in a pipe die and surrounding a layer of carbon fibers in the pipe die; arranging a steel bar framework; (3) pouring concrete; (4) pressurizing and establishing prestress in the concrete and a steel bar by the water injection and the pressurization of a rubber inner die, the pressure reaches 25MPa-30MPa, and the duration is 40 minutes to 45 minutes; (5) maintaining by steam at 50 DEG C-55 DEG C for 1 hour or so; (6) demolding when the concrete strength reaches 8MPa-12MPa; (7) maintaining by hot water, maintaining by hot water at 50 DEG C-60 DEG C for previous seven days and maintaining at lower temperature after seven days. The concrete pipe has the advantages of high strength, light weight, favorable plasticity, impact resistance, fatigue resistance, and the like.

Description

technical field [0001] The invention relates to the field of building materials, in particular to a carbon fiber concrete pipe and a preparation method. Background technique [0002] The manufacturing process of prestressed concrete pipe is complicated, and the construction process is cumbersome. It is difficult for operators who are not familiar with it to operate, and the quality is not easy to guarantee. In addition, the stretching machine for prestressed concrete needs to be specially provided, which increases the production cost. There are two problems in the non-prestressed concrete pipe, one is that the strength is not high, and the other is that it is prone to transverse shrinkage cracks. The concrete pipe can be in a three-way compression state when it is stressed by means of the hoop effect of carbon fiber on the concrete, so that the concrete pipe has higher compressive strength and compression deformation resistance. However, due to the shrinkage of the concret...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/08B28B21/60B28B21/92
Inventor 朱奎
Owner 浙江处州建设管理有限公司
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