Preparing technology for carbon fiber composite rib

Abstract

The invention provides a preparing technology for a carbon fiber composite rib. The preparing technology includes the steps that firstly, connecting manufacturing of a carbon fiber rib and a matched anchor is conducted and includes the processes of anchor cleaning, epoxy mortar mixing, anchor pouring and maintaining; secondly, manufacturing of a CFRP-PCPs rib is conducted; thirdly, a hydraulic jack is used for tensioning a CFRP rib which is well located; fourthly, after tensioning is completed, a fixing nut at a tensioning end is knocked, and after a numerical value of a tension strain reading instrument is stabilized, stirred UHPC concrete is poured in a composite rib die box in time; fifthly, the surface of the CFRP-PCPs composite rib which is formed in a pouring mode is covered by a plastic film, watered and maintained for 15 days and then tensioned. The preparing technology for the carbon fiber composite rib is simple, the strength of the composite rib is 10-15 times that of a common steel rib, the specific strength is the ratio of the material strength to the appearance density of the composite rib, fatigue resistance and corrosion resistance are achieved, the electromagnetic insulativity is achieved, the heat conduction coefficient is low, and the self-diagnosing performance is good.

Description

technical field [0001] The invention relates to a preparation process of carbon fiber composite bars, belonging to the technical field of civil engineering materials. Background technique [0002] After nearly 150 years of development, reinforced concrete has become the most widely used building material in engineering structures, but it has gradually exposed the limitations of its use environment and the defects of the material itself. Material defects are mainly reflected in the failure of reinforced concrete structures mainly caused by corrosion of steel bars, especially in coastal and severe frost areas, mainly due to the chlorination corrosion of steel bars after deicing with salt, and the corrosion of steel bars in structures is more serious , it seriously affects the durability of reinforced concrete structures, shortens the normal service life of buildings, and the funds spent on repairing and maintaining structures that have problems due to steel corrosion may even ...

AI Technical Summary

Problems solved by technology

Material defects are mainly reflected in the failure of reinforced concrete structures mainly caused by corrosion of steel bars, especially in coastal and severe frost areas, mainly due to the chlorination corrosion of steel bars after deicing with salt, and the corrosion of steel bars in structures is more serious , it seriously affects the durability of the reinforced concrete structure, shortens the normal service life of the building, and the funds spent on repairing and maintaining the structure with problems due to steel corrosion will even exceed the cost of the structure itself

The limitations of the use environment mainly refer to some special structures, such as anti-static and anti-chemical corrosion structures, which cannot be dealt with by ordinary reinforced concrete structures.