A self-compacting concrete composition for wall reinforcement

Abstract

The utility model relates to concrete technical field, concretely is a kind of self-compacting concrete composition for wall reinforcement, including original wall and reinforcing plate, the side of original wall is equipped with dovetail groove, the section of dovetail groove is isosceles trapezoidal, self-compacting concrete reinforcing layer and triangular muscle are equipped in dovetail groove, reinforcing block is equipped on triangular muscle, threaded cylinder is equipped on reinforcing block, the both ends of threaded cylinder are equipped with reinforcing bar, reinforcing bar is connected with threaded cylinder, fastening mechanism is equipped between reinforcing block and reinforcing plate, fastening mechanism includes threaded hole and positioning hole, the utility model is connected by dovetail groove and the tenon-and-mortise connection of self-compacting concrete to enhance mechanical occlusion, the stability of triangular muscle and the adjustability of threaded connection are combined, so that reinforcing plate, reinforcing block and self-compacting concrete form integral force system.

Description

Technical Field

[0001] This utility model relates to the field of concrete technology, specifically to a self-compacting concrete composition for wall reinforcement. Background Technology

[0002] As is well known, during the long-term use of building structures, the original walls are prone to problems such as decreased load-bearing capacity, cracking, and local damage due to factors such as foundation settlement, environmental erosion, material aging, or increased load. If not reinforced in time, these problems can easily lead to structural safety hazards. Therefore, wall reinforcement is an important requirement in building maintenance and renovation.

[0003] Currently, most mainstream wall reinforcement technologies adopt the form of "single concrete pouring layer + simple steel bar anchoring". However, this traditional reinforcement scheme has obvious defects: the connection between the reinforcement layer and the original wall relies only on the bonding force between the concrete and the wall surface, lacking a mechanical interlocking structure. After long-term stress, hollowing and peeling are prone to occur. Especially under vibration or temperature deformation, the risk of the reinforcement layer falling off the original wall increases significantly. The steel bars used to enhance the strength of the reinforcement layer are mostly straight bars of fixed length. The anchoring position and length cannot be adjusted, making it difficult to adapt to wall reinforcement areas of different widths and depths. During construction, repeated cutting and adjustment are required, which is inefficient and prone to anchoring failure due to dimensional deviations.

[0004] The shortcomings of the aforementioned traditional reinforcement technologies mean that they cannot meet the high standards of modern building wall reinforcement in terms of reinforcement reliability, construction flexibility, and post-construction maintenance. There is an urgent need for a new type of reinforcement structure that can achieve "strong connection, adjustability, overall stress distribution, and easy maintenance". Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the problems in existing wall reinforcement schemes, such as easy peeling of the reinforcement layer from the original wall and low construction efficiency and easy anchorage failure due to the inability to adjust the anchorage length of the steel bars, this utility model provides a self-compacting concrete composition for wall reinforcement.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a self-compacting concrete composition for wall reinforcement, comprising an original wall and a reinforcing plate. A dovetail groove is formed on one side of the original wall, the cross-section of which is an isosceles trapezoid. A self-compacting concrete reinforcement layer and triangular reinforcement bars are provided within the dovetail groove. A reinforcing block is provided on each triangular reinforcement bar, and a threaded cylinder is provided on each reinforcing block. Reinforcing bars are threaded to both ends of the threaded cylinder, and these reinforcing bars are threadedly connected to the threaded cylinder. A fastening mechanism is provided between the reinforcing block and the reinforcing plate. The fastening mechanism includes a threaded hole and a positioning hole. The threaded hole is located at one end of the reinforcing block, and the positioning hole is located on the reinforcing plate. A threaded post is provided in the positioning hole, and the threaded post is threadedly connected to the threaded hole. Multiple triangular reinforcement bars are provided and spaced apart along the length of the dovetail groove.

[0009] Furthermore, the inner wall of the dovetail groove is coated with an interface transition layer.

[0010] Furthermore, the dovetail groove is provided with reinforcing ribs, one end of which is embedded in the original wall, and the other end of which is bent and extends upward.

[0011] Furthermore, the reinforcing ribs are provided in multiples and arranged in an array.

[0012] Furthermore, the thickness of the self-compacting concrete reinforcement layer is 50-150mm.

[0013] Furthermore, a modified epoxy resin interface agent coating is provided between the interface transition layer and the original wall, and the thickness of the coating is 0.5-1mm.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a self-compacting concrete composition for wall reinforcement, which has the following beneficial effects:

[0016] This wall reinforcement utilizes a self-compacting concrete composition. By creating dovetail grooves with isosceles trapezoidal cross-sections in the original wall, the structure, wider at the inside and narrower at the outside, forms a natural tenon-and-mortise connection with the self-compacting concrete reinforcement layer. This mechanical interlocking principle replaces the traditional single adhesive connection, significantly improving the shear strength and peel resistance of the reinforcement layer to the original wall, completely solving the core problem of the reinforcement layer easily detaching from the original wall. Multiple triangular ribs are installed within the dovetail grooves. Utilizing the geometric stability of the triangular structure, this not only provides reliable internal support for the self-compacting concrete reinforcement layer but also achieves a strong anchoring effect through their tight encapsulation with the concrete. Simultaneously, the length of the reinforcing bars on the triangular ribs can be adjusted by rotating a threaded cylinder, ensuring that both ends of the bars abut against the inner wall of the dovetail groove, further firmly fixing the triangular ribs within the groove and preventing displacement during concrete pouring or subsequent stress. This allows the triangular ribs and the self-compacting concrete reinforcement layer to work together to distribute localized loads evenly to the original wall, effectively dispersing stress at stress concentration points and reducing the risk of cracks in the reinforcement layer due to stress concentration. Attached Figure Description

[0017] Figure 1 This is a first-view structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0019] Figure 3 This utility model Figure 1 Top-view half-section view of the structure of the Central Plains wall;

[0020] Figure 4 This utility model Figure 1 Enlarged partial frontal half-section view of the wall structure in the Central Plains.

[0021] In the diagram: 1. Original wall; 2. Reinforcing plate; 3. Dovetail groove; 4. Triangular reinforcement; 5. Reinforcing block; 6. Threaded cylinder; 7. Reinforcing bar; 8. Threaded hole; 9. Threaded column; 10. Reinforcing bar. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-4This utility model discloses a self-compacting concrete composition for wall reinforcement, comprising an original wall 1 and a reinforcing plate 2. A dovetail groove 3 is formed on one side of the original wall 1, the cross-section of which is an isosceles trapezoid. A self-compacting concrete reinforcement layer and triangular reinforcement 4 are provided within the dovetail groove 3. A reinforcing block 5 is provided on the triangular reinforcement 4, and a threaded cylinder 6 is provided on the reinforcing block 5. Reinforcing bars 7 are provided at both ends of the threaded cylinder 6, and the reinforcing bars 7 are threadedly connected to the threaded cylinder 6. A fastening mechanism is provided between the reinforcing block 5 and the reinforcing plate 2, the fastening mechanism including a threaded hole 8 and a positioning... The threaded hole 8 is located at one end of the reinforcing block 5, and the positioning hole is located on the reinforcing plate 2. A threaded post 9 is provided in the positioning hole and is threadedly connected to the threaded hole 8. Multiple triangular ribs 4 are provided and spaced apart along the length of the dovetail groove 3. In this embodiment, the dovetail groove 3 is designed with an isosceles trapezoidal cross-section, wider inside and narrower outside. Utilizing the mechanical interlocking principle, the self-compacting concrete reinforcement layer forms a tenon-and-mortise connection with the original wall 1, preventing the self-compacting concrete reinforcement layer from falling out of the dovetail groove 3. The triangular ribs 4 enhance the connection with the self-compacting concrete through their own triangular stability. The dense concrete provides anchoring and stable support for the reinforcing block 5. During construction, the reinforcing bars 7 are rotated, causing them to move axially within the threaded cylinder 6 until the ends of the two reinforcing bars 7 abut against the inner wall of the dovetail groove 3, thus securing the triangular ribs 4. The threaded connection between the threaded cylinder 6 and the reinforcing bars 7 allows for flexible adjustment of the reinforcing bar 7 length to meet different reinforcement needs, and the connection strength is high. Through mechanical locking, the reinforcing plate 2 and the reinforcing block 5 are rigidly connected, forming an integrated load-bearing system with the reinforcing plate 2, reinforcing block 5, and self-compacting concrete reinforcement layer. This is achieved through multiple triangular ribs 4 and corresponding fastening mechanisms. Align the positioning hole of the reinforcing plate 2 with the threaded hole 8, then pass the threaded post 9 through the positioning hole and thread it to the threaded hole 8, thereby reinforcing the reinforcing plate 2 at the opening of the dovetail groove 3. Then fill the dovetail groove 3 with self-compacting concrete to form a self-compacting concrete reinforcement layer, which can improve the structural strength of the original wall 1 and solve the problem of weak connection and easy peeling between the traditional reinforcement structure and the original wall 1. The triangular rib 4 and the self-compacting concrete reinforcement layer work together to reduce local stress concentration and reduce the risk of cracking. The detachable threaded connection facilitates construction adjustment and later maintenance, and has a wider range of applications.

[0024] To improve the bond strength between the inner wall of the dovetail groove 3 and the self-compacting concrete, in this design, the inner wall of the dovetail groove 3 is coated with an interface transition layer. This interface transition layer, typically a modified mortar or a specialized interface material, improves the interfacial performance between the inner wall of the dovetail groove 3 and the self-compacting concrete, reduces weak areas at the interface caused by material differences between the original wall 1 and the concrete, and buffers stress generated by temperature deformation. This enhances the bond strength between the inner wall of the dovetail groove 3 and the self-compacting concrete, prevents interface delamination, reduces interface cracking caused by temperature changes, and improves overall durability.

[0025] In this design, the dovetail groove 3 is equipped with reinforcing ribs 10. One end of the reinforcing rib 10 is embedded in the original wall 1, and the other end of the reinforcing rib 10 bends upward. The embedded end of the reinforcing rib 10 forms an anchor, while the bent upward hook-like structure allows for mechanical bonding with the self-compacting concrete, enhancing the concrete's crack resistance. Multiple reinforcing ribs 10 are arranged in an array to further improve the connection strength between the self-compacting concrete reinforcement layer and the original wall 1, preventing overall slippage of the reinforcement layer. The bent structure can absorb some impact loads, improving the wall's impact resistance. The evenly distributed array of multiple reinforcing ribs 10 allows external forces, such as wall loads and vibration loads, to be evenly transferred to the original wall 1 and the self-compacting concrete reinforcement layer, avoiding excessive local stress. This more uniform stress distribution reduces concrete cracking caused by localized stress concentration.

[0026] In this solution, the thickness of the self-compacting concrete reinforcement layer is 50-150mm. If the thickness is too small, the reinforcement strength will be insufficient, and if it is too thick, it will increase the self-weight of the wall and may cause stress concentration. This range can cover the reinforcement needs of most civil building walls.

[0027] To enhance adhesion to the interface transition layer, in this solution, a modified epoxy resin interface agent coating is provided between the interface transition layer and the original wall 1. The coating thickness is 0.5-1mm. The modified epoxy resin interface agent has high adhesion and permeability, and can penetrate into the tiny pores of the surface layer of the original wall 1, such as bricks and concrete, while enhancing adhesion to the interface transition layer.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-compacting concrete composition for wall reinforcement, comprising the original wall (1) and a reinforcing plate (2), characterized in that, A dovetail groove (3) is provided on one side of the original wall (1). The cross-section of the dovetail groove (3) is an isosceles trapezoid. A self-compacting concrete reinforcement layer and triangular reinforcement (4) are provided in the dovetail groove (3). A reinforcement block (5) is provided on the triangular reinforcement (4). A threaded cylinder (6) is provided on the reinforcement block (5). Reinforcing bars (7) are provided at both ends of the threaded cylinder (6). The reinforcing bars (7) are threadedly connected to the threaded cylinder (6). A fastening mechanism is provided between the reinforcement block (5) and the reinforcement plate (2). The fastening mechanism includes a threaded hole (8) and a positioning hole. The threaded hole (8) is opened at one end of the reinforcement block (5). The positioning hole is opened on the reinforcement plate (2). A threaded post (9) is provided in the positioning hole. The threaded post (9) is threadedly connected to the threaded hole (8). Multiple triangular reinforcements (4) are provided and are arranged at intervals along the length direction of the dovetail groove (3).

2. The self-compacting concrete composition for wall reinforcement according to claim 1, characterized in that, The inner wall of the dovetail groove (3) is coated with an interface transition layer.

3. The self-compacting concrete composition for wall reinforcement according to claim 1, characterized in that, The dovetail groove (3) is provided with a reinforcing rib (10), one end of which is embedded in the original wall (1), and the other end of which is bent upward.

4. The self-compacting concrete composition for wall reinforcement according to claim 3, characterized in that, The reinforcing ribs (10) are provided in multiple and arranged in an array.

5. The self-compacting concrete composition for wall reinforcement according to claim 1, characterized in that, The thickness of the self-compacting concrete reinforcement layer is 50-150mm.

6. The self-compacting concrete composition for wall reinforcement according to claim 2, characterized in that, A modified epoxy resin interface agent coating is provided between the interface transition layer and the original wall (1), and the thickness of the coating is 0.5-1mm.

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