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A preparation method suitable for steel-continuous fiber composite bars
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A technology of fiber composite bars and continuous fibers, which is applied in the field of composite materials, can solve the problems of high price, and achieve the effects of overcoming brittleness, good bonding performance, and simple preparation methods
Active Publication Date: 2016-06-01
SICHUAN AEROSPACE WU YUAN COMPOSITE
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[0003] The purpose of the present invention is to provide a preparation method suitable for steel-continuous fiber composite bars, which is made of threaded steel core, fiber cloth and basalt fiber bundles, has a reasonable structure, and is used as a fiber cloth for reinforcing materials and basalt fiber bundles are fully impregnated with resin, and its internal and external interfaces have good bonding properties, which can effectively meet the design strength of reinforced concrete structures, and at the same time, can overcome the material brittleness of existing fiber reinforced composites (FRP) Strong, high price and other defects, the actual use effect is good
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Embodiment 1
[0034] In an embodiment, the preparation method of fiber composite bars specifically includes the following steps:
[0035] (1) Processing: The purchased HRB400 rebar is processed into a rebar inner core. The basic properties of HRB400 rebar are shown in Table 1:
[0036] Table 1
[0037] Rebar type model Yield strength (MPa) Elastic modulus (Gpa) Weight (kg / m) diameter (mm) Rebar HRB400 420 200 0.617 10
[0038] First, use a grinder to remove the symmetrical longitudinal long ribs on both sides of the threaded steel bar, and then use alcohol to scrub clean before proceeding to the following steps.
[0039] (2) Decontamination: Use sandpaper to remove the embroidered stains on the outer surface of the inner core of the threaded steel bar, and then use gauze dipped in acetone to clean the inner core of the threaded steel bar;
[0040] (3) Fiber cloth coating resin: Atlac430 epoxy bisphenol A vinyl resin is selected as the coating resin, and i...
Embodiment 2
[0056] The difference between this embodiment and embodiment 1 is that the selected fiber cloth types are different. In this implementation, the preparation method of fiber composite bars specifically includes the following steps:
[0057] (1) Processing: Process the purchased HRB400 threaded steel bar into the inner core of the threaded steel bar. First, use a grinder to remove the symmetrical longitudinal ribs on both sides of the threaded steel bar. Then, use alcohol to clean it, and then proceed to the following steps .
[0058] (2) Decontamination: Use sandpaper to remove the embroidered stains on the outer surface of the inner core of the threaded steel bar, and then use gauze dipped in acetone to clean the inner core of the threaded steel bar;
[0059] (3) Fiber cloth brushing resin: choose Atlac430 epoxy bisphenol A vinyl resin as the brushing resin, cut 30 bundles of basalt fiber cloth made of CBF13-2400Tex basalt fiber, and lay it flat, one end of which is glued Tem...
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Abstract
The invention discloses a preparation method of a steel fiber composite bar. The steel fiber composite bar is obtained by compounding a thread steel bar inner core, a fiber cloth and a basalt fiber bundle and has a reasonable construction structure; the fiber cloth and the basalt fiber bundle used as reinforcing materials are fully dipped in resin, so the design strength of the reinforced concrete structure can be effectively met; and the method overcomes the defects of strong brittleness, high price and the like of present fiber reinforced composite materials (FRP), and is suitable for wide popularization use. The preparation method is simple, the circumferential winding of the basalt fiber bundle can effectively fills a gap between the projection rib of the thread steel bar inner core and the fiber cloth, and substantially reduces the strength and rigidity weakening due to the local bending of the fiber cloth during the compounding of the vertical fiber (fiber cloth) with the thread steel bar.
Description
technical field [0001] The invention relates to a preparation method suitable for steel-continuous fiber composite bars, in particular to a preparation process for composite bar reinforcing materials used in reinforced concrete structures, and belongs to the field of composite materials. Background technique [0002] Reinforced concrete structure (RC structure) is a structure built with steel bars and concrete. The steel bars bear tension and the concrete bears pressure. It has the advantages of firmness, durability, good fire resistance, saving steel and lower cost than steel structures. One of the more common construction forms in the construction industry, it is mostly used in various super high buildings and long-span structures, such as bridges, tunnels and other load structures. In its structure, as the basic reinforcing material, steel bar has strong comprehensive performance, but it has disadvantages such as easy corrosion. Based on this situation, in recent years, f...
Claims
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Application Information
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