Carbon fiber concrete pipe and manufacture method thereof

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...