Indentation-shaped steel fiber
By increasing the size of the groove and adding an anti-oxidation and corrosion-resistant layer to the indented steel fiber, the corrosion risk and insufficient strength of the indented steel fiber in the concrete structure are solved, thereby improving the impact resistance and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-19
- Publication Date
- 2026-03-24
AI Technical Summary
Existing indented steel fibers in concrete structures have the problems of localized corrosion risk and insufficient strength, resulting in insufficient impact resistance and service life.
By increasing the size of the pressure groove and setting an anti-oxidation layer and a corrosion-resistant layer on the surface of the steel fiber, the energy absorption capacity and mechanical interlocking force are improved, while preventing the intrusion of oxygen, moisture and corrosive chemicals.
It significantly improves the impact resistance and flexural strength of concrete structures, extends the service life of steel fibers, and prevents crack propagation and corrosion.
Smart Images
Figure CN224032013U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of foundation engineering construction especially relates to a indentation shape steel fiber. BACKGROUND
[0002] As a kind of reinforcing material, indentation shape steel fiber has wide application in concrete structure, and its main role is to provide three-dimensional reinforcing effect in concrete matrix, improve the tensile strength, bending strength, impact resistance and crack resistance of concrete, thereby prolonging the service life of structure and improving its durability.
[0003] Although indentation shape steel fiber increases the mechanical interlocking force with concrete matrix by indentation, but its surface irregularity can also lead to increased risk of local corrosion, corrosion can start from indentation, gradually expand, and the overall strength of indentation steel fiber can be further improved, therefore, the technical personnel in the art provide a indentation shape steel fiber to solve the problems raised in the background art. SUMMARY
[0004] The utility model discloses a indentation shape steel fiber, by increasing the size of pressure tank, can improve the energy absorption of fiber, make concrete structure when being subjected to impact load can better absorb and disperse energy, thereby improve impact resistance, improve the mechanical interlocking force between concrete at the same time, by setting oxidation resistance layer and corrosion resistance layer, reduce its environmental erosion, prevent the invasion of oxygen, moisture and corrosive chemical substances in concrete, prolong the service life of steel fiber.
[0005] To achieve the above object, the utility model provides the following technical scheme: a indentation shape steel fiber, including body, the upper end face of body is linear array with multiple pressure tank, the body includes oxidation resistance layer, corrosion resistance layer and base layer, the upper and lower ends of base layer are respectively provided with corrosion resistance layer, and the other side of two corrosion resistance layers is respectively provided with oxidation resistance layer;
[0006] Through the above technical scheme, by increasing the size of pressure tank, can improve the energy absorption of fiber, make concrete structure when being subjected to impact load can better absorb and disperse energy, thereby improve impact resistance, improve the mechanical interlocking force between concrete at the same time, by setting oxidation resistance layer and corrosion resistance layer, reduce its environmental erosion, prevent the invasion of oxygen, moisture and corrosive chemical substances in concrete, prolong the service life of steel fiber.
[0007] Further, the size of pressure tank is 0.2mm to 0.5mm;
[0008] Through the technical scheme, mechanical engagement between the steel fiber and the concrete matrix can be significantly increased, the bending strength of the concrete can be significantly improved, and the expansion of cracks can be effectively prevented.
[0009] Further, the length of the body is 30mm to 50mm;
[0010] Through the technical scheme, the medium-length body can be better bonded to the concrete.
[0011] Further, the material of the anti-oxidation layer is one or more of epoxy resin, polyurethane or nano-silicon dioxide;
[0012] Through the technical scheme, the anti-oxidation layer can improve the environmental erosion resistance of the steel fiber, maintain stable performance in various harsh environments, prevent the strength of the steel fiber from decreasing during corrosion, and maintain the original tensile strength and yield strength.
[0013] Further, the material of the corrosion-resistant layer is aluminum-zinc alloy, acrylic acid or nano-titanium oxide;
[0014] Through the technical scheme, the corrosion-resistant layer can form a protective film on the surface of the steel fiber, effectively prevent the invasion of oxygen, moisture and corrosive chemicals in the concrete, and prolong the service life of the steel fiber.
[0015] The utility model has the advantages of:
[0016] 1、The utility model discloses a pressure mark shaped steel fiber, which comprises a body, wherein the body is made of steel fiber, and the body is provided with a pressure groove.
[0017] 2、The utility model discloses a pressure mark shaped steel fiber, which comprises a body, wherein the body is made of steel fiber, and the body is provided with a pressure groove. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 A perspective view of the pressure mark shaped steel fiber is provided for the utility model;
[0019] Figure 2 A front view of the pressure mark shaped steel fiber is provided for the utility model;
[0020] Figure 3 Another perspective view of the pressure mark shaped steel fiber is provided for the utility model;
[0021] Figure 4A partial axial section view of the indentation-shaped steel fiber is provided in the utility model.
[0022] Legend:
[0023] 1, body; 101, antioxidant layer; 102, corrosion-resistant layer; 103, base layer; 2, pressing groove. DETAILED DESCRIPTION
[0024] 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, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0025] Reference Figures 1-4 The utility model provides an embodiment: indentation-shaped steel fiber, including body 1, the upper end face of body 1 is linear array and has multiple pressing grooves 2, body 1 includes antioxidant layer 101, corrosion-resistant layer 102 and base layer 103, the upper and lower ends of base layer 103 are provided with corrosion-resistant layer 102 respectively, the other side of two corrosion-resistant layers 102 is provided with antioxidant layer 101 respectively.
[0026] The size of pressing groove 2 is 0.2mm to 0.5mm, can significantly increase the mechanical bite force between steel fiber and concrete matrix, can significantly improve the bending strength of concrete simultaneously, and can effectively prevent the expansion of crack, the length of body 1 is 30mm to 50mm, the medium length body 1 can better be bonded with concrete, the material of antioxidant layer 101 is one or more of epoxy resin, polyurethane or nanometer silicon dioxide, antioxidant layer 101 can improve the environmental erosion resistance of steel fiber, makes it keep stable performance in various severe environments, can prevent the strength of steel fiber from reducing in the corrosion process simultaneously, keeps its original tensile strength and yield strength, the material of corrosion-resistant layer 102 is aluminum-zinc alloy, acrylic acid or nanometer titanium oxide, corrosion-resistant layer 102 can form a protective film on the surface of steel fiber, effectively prevents the invasion of oxygen, moisture and corrosive chemicals in concrete, thereby prolonging the service life of steel fiber.
[0027] Working principle: the utility model is a kind of indentation-shaped steel fiber, by increasing the size of pressing groove 2, can improve the energy absorption of fiber, make concrete structure can better absorb and disperse energy when being impacted load, to improve the impact resistance, improve the mechanical bite force between the concrete simultaneously, by setting antioxidant layer 101 and corrosion-resistant layer 102, reduce its environmental erosion, prevent the invasion of oxygen, moisture and corrosive chemicals in concrete, prolong the service life of steel fiber.
[0028] It should be pointed out finally that: the above only for the preferred embodiments of the present application have, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for the skilled in the art, it still can be modified, or for 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 in the scope of protection of the present application.
Claims
1. A press mark shaped steel fiber comprising a body (1), characterized in that: The upper end face of the body (1) is linearly arrayed with a plurality of pressing grooves (2), the body (1) comprises an oxidation-resistant layer (101), a corrosion-resistant layer (102) and a base layer (103), the upper and lower ends of the base layer (103) are respectively provided with the corrosion-resistant layer (102), and the other sides of the two corrosion-resistant layers (102) are respectively provided with the oxidation-resistant layer (101).
2. A press mark shaped steel fiber as claimed in claim 1, wherein: The size of the pressing groove (2) is 0.2mm to 0.5mm.
3. A press mark shaped steel fiber as claimed in claim 1, wherein: The length of the body (1) is 30mm to 50mm.
4. The indentation shaped steel fiber as claimed in claim 1, wherein: The material of the oxidation-resistant layer (101) is one or more of epoxy resin, polyurethane or nano silicon dioxide.
5. The indentation shaped steel fiber as claimed in claim 1 wherein: The material of the corrosion-resistant layer (102) is aluminum-zinc alloy, acrylic acid or nano titanium oxide.