Compound carbon fiber reinforcement method for inner wall of water pipeline

Abstract

The invention provides a compound carbon fiber reinforcement method for an inner wall of a water pipeline, and relates to the technical field of water pipeline reinforcement in water conservancy projects. The compound carbon fiber reinforcement method comprises the following steps of constructing a primer coat on the inner wall of a part to be reinforced of an existing water pipeline after foundation treatment; constructing first layer of cushion glue before the primer coat is cured, and bonding and fixing a high-compression elastic cushion through the first cushion glue; filling second layerof cushion glue between the high-compression elastic cushion and the gap thereof; constructing a leveling layer after the second layer of cushion glue is cured; bonding multiple layers of carbon fibercloth on the leveling layer; and finally, constructing a flexible barrier coat on the surface of the carbon fiber cloth, so that the deformation amount of the carbon fiber cloth layer is increased, the high strength advantage of carbon fiber materials is brought into full play, and the reinforcing reinforcement effect of carbon fibers on the water pipeline is increased to the greatest extent. Theinternal water pressure borne by the water pipeline is reduced, and the hidden dangers of cracks in the concrete of the water pipeline or pipe burst due to the fracture of a lateral prestressed steelwire are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of water pipeline reinforcement in water conservancy projects, in particular to a composite carbon fiber reinforcement method for the inner wall of a water pipeline. Background technique [0002] Round pipes such as PCCP pipes (prestressed steel cylinder concrete pipes), PCP pipes (prestressed reinforced concrete pipes), glass sand pipes, and reinforced concrete pipes are commonly used water delivery pipes in the prior art. There are more and more projects using water pipelines. However, due to design and construction quality defects, improper operation management and other reasons, pipe bursts have occurred in many projects, which seriously threatens the safe operation of water pipelines. Most of the PCCP and PCP pipe bursts are caused by the broken wires of the circumferential prestressed steel wires wrapped around the high-strength concrete pipe core. In order to prevent problems before they happen, the ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a composite carbon fiber reinforcement method for the inner wall of the water delivery pipeline, which solves the problem of low elastic modulus and large elongation at break of the carbon fiber in the prior art when carbon fiber is pasted on the inner side to reinforce the water delivery pipeline. Problems leading to poor reinforcement