Single-sided corrugated steel fiber

Abstract

The utility model relates to the field of constructional engineering materials, and discloses a single-face corrugated steel fiber which comprises a steel fiber board, a plurality of wave crests are transversely arranged on the upper end face of the steel fiber board, the plurality of wave crests are symmetrically arranged with the wave crest in the center as the axis, and the heights of the plurality of wave crests are different. According to the utility model, the design of the wave crests with different heights can increase the mechanical occlusal force between the fiber and the concrete matrix, due to different wave crest heights, the fiber can generate more friction and mechanical locking effects when being subjected to forces in different directions in the concrete, and due to the design of the wave crests with different heights, when being subjected to a pullout force, the fiber can generate more mechanical locking effects. Compared with the prior art, larger resistance can be provided, the bonding durability between the fiber and a concrete matrix can be improved through the design of the wave crests with different heights, relative sliding is not prone to occurring, and therefore the bonding durability is improved, the two ends are small, the center position is large through the two arc faces, the tensile strength and the bending strength are improved, and the overall performance of concrete is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of building engineering materials, especially a single-face corrugated steel fiber. BACKGROUND

[0002] Steel fiber is a fiber-like object made of steel, which is uniformly mixed in concrete. The tensile strength of concrete is low, and the addition of steel fiber can effectively improve its tensile strength. Steel fiber can significantly improve the toughness of concrete, that is, the ability to absorb energy during stress. Steel fiber forms a three-dimensional network structure in concrete, which can prevent crack propagation and improve the crack resistance of concrete.

[0003] After searching, a single-face corrugated steel fiber (publication number CN218146403U) is disclosed in a Chinese patent. Although the single-face corrugated design makes the preparation process simpler and eliminates the need for bending and other work, the mechanical interlocking force of the same corrugation in some directions is insufficient, and the stress is concentrated on one or a few points when under stress, which can easily cause excessive local stress and thus induce cracks. Therefore, a single-face corrugated steel fiber is provided by the skilled person in the art to solve the problems raised in the background art. SUMMARY

[0004] The utility model aims at solving the shortcomings in the prior art and provides a single-face corrugated steel fiber. The design of different high and low wave peaks can increase the mechanical interlocking force between the fiber and the concrete matrix. Due to the different wave peak heights, the fiber will generate more friction and mechanical locking effect when subjected to forces in different directions in the concrete, which is not prone to relative sliding, thereby improving the bonding durability.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a single-face corrugated steel fiber, comprising a steel fiber plate, a plurality of wave peaks are arranged horizontally on the upper end surface of the steel fiber plate, the plurality of wave peaks are symmetrically arranged around the central wave peak as the axis, and the heights of the plurality of wave peaks are all different.

[0006] Through the above technical scheme, the design of different high and low wave peaks can increase the mechanical interlocking force between the fiber and the concrete matrix. Due to the different wave peak heights, the fiber will generate more friction and mechanical locking effect when subjected to forces in different directions in the concrete, which is not prone to relative sliding, thereby improving the bonding durability.

[0007] Further, a corrosion-resistant layer is sleeved on the outer side wall of the steel fiber plate and the outer side wall of the plurality of wave peaks, and an arc surface is formed on the front and rear end surfaces of the steel fiber plate, the front and rear end surfaces of the plurality of wave peaks, and the front and rear end surfaces of the corrosion-resistant layer.

[0008] Through the technical scheme, the corrosion resistance is improved by the corrosion-resistant layer, and the design of the two small ends and the large center position can change the stress distribution in the concrete, improve the tensile strength and bending strength, and thus enhance the overall performance of the concrete.

[0009] Further, a plurality of grooves are arranged on the arc surfaces of the front and rear ends of the corrosion-resistant layer.

[0010] Through the technical scheme, the friction between the two arc surfaces and the concrete is improved by the plurality of grooves, and the adhesion is improved.

[0011] Further, the material of the corrosion-resistant layer is stainless steel.

[0012] Through the technical scheme, the corrosion-resistant layer made of stainless steel can maintain its performance in harsh environments.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the different high-low wave peaks of the single-sided corrugated steel fiber can increase the mechanical interlocking force between the fiber and the concrete matrix. Due to the different wave peak heights, the fiber will generate more friction and mechanical locking effect when subjected to forces in different directions. The different high-low wave peak design can provide greater resistance when the fiber is pulled out, and can improve the adhesion durability between the fiber and the concrete matrix, and is not prone to relative sliding, thereby improving the adhesion durability.

[0015] 2. In the utility model, the two small ends and the large center position are designed by two arc surfaces. This design can change the stress distribution in the concrete, improve the tensile strength and bending strength, and thus enhance the overall performance of the concrete.

[0016] 3. In the utility model, grooves with different sizes are arranged on the two arc surfaces of the corrosion-resistant layer, thereby improving the friction between the two arc surfaces and the concrete, and improving the adhesion. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A perspective view of a single-sided corrugated steel fiber is proposed for the utility model;

[0018] Figure 2 A front view of a single-sided corrugated steel fiber is proposed for the utility model;

[0019] Figure 3 A front view of a single-sided corrugated steel fiber is proposed for the utility model;

[0020] Figure 4The utility model provides a kind of single-side corrugated steel fiber plan view.

[0021] Legend:

[0022] 1, steel fiber plate;2, wave crest;3, camber;4, recess;5, corrosion-resistant layer. Specific embodiments

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] Reference Figures 1-4 , the utility model provides an embodiment: a kind of single-side corrugated steel fiber, including steel fiber plate 1, multiple wave crests 2 are arranged on the upper end surface of steel fiber plate 1 transversely, multiple wave crests 2 are symmetrically arranged with the central position wave crest 2 as axis, the height of multiple wave crests 2 is all inconsistent, and the wave crest 2 of different height design can increase the mechanical bite force between fiber and concrete matrix, since the wave crest 2 height is different, fiber is subjected to force in different directions in concrete, more friction and mechanical locking effect are generated, and relative sliding is not easy to occur, so as to improve the bonding durability.

[0025] Corrosion-resistant layer 5 is sleeved on the outer side wall of steel fiber plate 1 and the outer side wall of multiple wave crests 2, camber 3 is formed on the front and rear end surfaces of steel fiber plate 1, the front and rear end surfaces of multiple wave crests 2 and the front and rear end surfaces of corrosion-resistant layer 5, corrosion resistance is improved by corrosion-resistant layer 5, and the design that two ends are small and the central position is large can change stress distribution in concrete, improve tensile strength and bending strength, so as to enhance the overall performance of concrete.

[0026] Multiple recesses 4 are arranged on the camber 3 of the front and rear end surfaces of corrosion-resistant layer 5, the friction between the two cambers 3 and concrete is improved by multiple recesses 4, the adhesion is improved, the material of corrosion-resistant layer 5 is stainless steel, and the corrosion-resistant layer 5 of stainless steel material can maintain its performance in harsh environment.

[0027] Working principle: the wave crest 2 of different height design can increase the mechanical bite force between fiber and concrete matrix, since the wave crest 2 height is different, fiber is subjected to force in different directions in concrete, more friction and mechanical locking effect are generated, the wave crest 2 of different height design makes fiber can provide greater resistance when being pulled out, can improve the bonding durability between fiber and concrete matrix, relative sliding is not easy to occur, so as to improve the bonding durability.

[0028] The two arc surfaces 3 make the small center position larger, which can change the stress distribution in the concrete, improve the tensile strength and bending strength, and thus enhance the overall performance of the concrete.

[0029] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A single-sided corrugated steel fiber comprising a steel fiber plate (1), characterized by: The upper end face of the steel fiber plate (1) is transversely arranged with a plurality of wave crests (2), the plurality of wave crests (2) are symmetrically arranged with the central position wave crest (2) as the axis, and the heights of the plurality of wave crests (2) are all inconsistent.

2. A single facer corrugated steel fibre as claimed in claim 1, wherein: The outer side wall of the steel fiber plate (1) and the outer side wall of the plurality of wave crests (2) are both sleeved with a corrosion-resistant layer (5), and the front and rear end faces of the steel fiber plate (1), the front and rear end faces of the plurality of wave crests (2) and the front and rear end faces of the corrosion-resistant layer (5) are all provided with arc faces (3).

3. A single facer steel fiber as claimed in claim 2, wherein: The arc faces (3) of the front and rear end faces of the corrosion-resistant layer (5) are both provided with a plurality of grooves (4).

4. A single facer steel fiber as claimed in claim 2, wherein: The material of the corrosion-resistant layer (5) is stainless steel.

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