Anti-crack concrete block

Abstract

The utility model discloses an anti-crack concrete building block, which belongs to the technical field of concrete building blocks and comprises a storage base and a concrete building block main body stacked at the top end of the storage base, and a polypropylene fiber layer is arranged on the outer wall of the concrete building block main body. Supporting rods inserted into a concrete block main body are fixed to the two sides of the top end face of the storage base, mounting grooves are formed in the side walls of the supporting rods at equal intervals, bearing plates used for supporting the concrete block main body are detachably fixed in the mounting grooves, hollow grooves are symmetrically formed in the center of the concrete block main body, and the bearing plates are detachably fixed in the hollow grooves. According to the anti-crack concrete block, the bricklaying strength and the crack resistance of the concrete block main body are improved, the situation that the concrete block main body bears the gravity during stacking is avoided, and the load bearing during stacking of the concrete block and the stacking storage strength are greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of concrete block technology, specifically relating to a crack-resistant concrete block. Background Technology

[0002] Concrete blocks are man-made blocks made from concrete, industrial waste (slag, fly ash, etc.) or local materials. They are larger in size than bricks and have the advantages of simple equipment and fast construction speed. They are commonly used in the construction industry. However, existing concrete blocks have poor seismic resistance and crack resistance. Long-term storage can easily lead to damage to concrete blocks, thus affecting their service life.

[0003] Patent application number 202321883522.1 discloses a crack-resistant concrete block, including a block body, a positioning strip, and a reinforcing component. The block body has a cavity, the positioning strip is disposed on the block body and extends along the length direction of the block body, and the reinforcing component is fixed to the positioning strip and embedded in the cavity to form an internal support for the block body within the cavity.

[0004] The main reason for the long-term storage of concrete blocks is that the hollow cavity affects the storage strength. When storing the aforementioned crack-resistant concrete blocks, positioning strips and reinforcing components are needed to fix them to the concrete blocks. After fixing multiple crack-resistant concrete blocks, they are stacked for storage. However, it is very laborious to install reinforcing components on each crack-resistant concrete block, which affects the storage efficiency of the concrete. In addition, the installation of reinforcing components will increase the weight of the concrete blocks. The increased pressure during the stacking process will affect the stacking strength of the concrete blocks. Utility Model Content

[0005] (1) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a crack-resistant concrete block. The crack-resistant concrete block aims to solve the technical problems in the prior art, such as the difficulty of installing reinforcing components on each crack-resistant concrete block, which affects the storage efficiency of concrete, and the fact that the addition of reinforcing components will increase the weight of the concrete block and increase the pressure during the stacking process, which will affect the stacking strength of the concrete block.

[0007] (2) Technical solution

[0008] To solve the above-mentioned technical problems, this utility model provides a crack-resistant concrete block, which includes a storage base and a concrete block body stacked on top of the storage base. The outer wall of the concrete block body is provided with a polypropylene fiber layer. Support rods inserted into the concrete block body are fixed on both sides of the top surface of the storage base. The side walls of the support rods are provided with mounting grooves at equal intervals. A load-bearing plate for supporting the concrete block body is detachably fixed in the mounting groove.

[0009] When using this technical solution, a polypropylene fiber layer is provided on the outer wall of the concrete block body. The polypropylene fiber layer increases the adhesion and crack resistance of the concrete block body. At the same time, the first and second cement receiving grooves on the concrete block body increase the contact area with cement during bricklaying, thereby improving the bricklaying strength and crack resistance of the concrete block body. By fixing support rods on both sides of the top surface of the storage base, the concrete block body is placed between the two support rods through a hollow groove during storage. The support rods provide auxiliary support for the center position of the concrete block body. After a concrete block body is installed, the load-bearing plate is inserted into the installation groove. The inner wall of the installation groove compresses the inclined surface of the protruding snap-fit ​​part, causing the elastic plate to undergo elastic deformation until the elastic plate passes through the two support rods. The protruding snap-fit ​​parts at both ends of the load-bearing plate abut against and fix to the inner wall of the installation groove on both sides of the support rod. This allows the detachable support rods to support the concrete block body, avoiding the concrete block body from bearing the weight when stacked, and greatly reducing the load-bearing capacity and storage strength of the stacked concrete blocks.

[0010] Preferably, hollow grooves are symmetrically formed at the center of the concrete block body, and the support rods are inserted into the hollow grooves.

[0011] Furthermore, a first cement receiving groove is provided at both ends of the concrete block body, and a plurality of second cement receiving grooves are provided at the center of the top surface of the concrete block body.

[0012] Furthermore, the polypropylene fiber layer comprises interwoven polypropylene fibers and concrete slurry mixed with the polypropylene fibers.

[0013] Furthermore, both ends of the load-bearing plate are provided with slots, and both sides of the inner wall of the mounting groove are provided with grooves corresponding to the slots.

[0014] Furthermore, elastic plates are fixed on both sides of the inner wall of the groove, and protruding snap-fit ​​parts are provided at the ends of the two elastic plates that are far apart.

[0015] Furthermore, the protruding snap-fit ​​portion is embedded in the groove, and the protruding snap-fit ​​portion abuts against the inner wall of the groove.

[0016] (3) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This invention improves the bricklaying strength and crack resistance of the concrete block body by providing a polypropylene fiber layer on the outer wall of the concrete block body. The polypropylene fiber layer increases the adhesion and crack resistance of the concrete block body. At the same time, the first cement receiving groove and the second cement receiving groove on the concrete block body increase the contact area with cement during bricklaying.

[0019] By fixing support rods on both sides of the top surface of the storage base, the concrete block body is placed between the two support rods through a hollow groove during storage. The support rods provide auxiliary support for the center position of the concrete block body. After a concrete block body is installed, the load-bearing plate is inserted into the installation groove. The inner wall of the installation groove presses the inclined surface of the protruding snap-fit ​​part, causing the elastic plate to undergo elastic deformation until the elastic plate passes through the two support rods. Then, the protruding snap-fit ​​parts at both ends of the load-bearing plate abut against and fix to the inner wall of the installation groove on both sides of the support rod. This allows the detachable support rods to support the concrete block body, avoiding the concrete block body from bearing the weight when stacked, and greatly reducing the load-bearing capacity and storage strength of the stacked concrete blocks. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This utility model Figure 1 Enlarged schematic diagram of the structure at point A;

[0023] Figure 3 This is a schematic diagram of the main structure of the concrete block in this utility model;

[0024] Figure 4 This is a cross-sectional view of the load-bearing plate in this utility model.

[0025] The markings in the attached diagram are as follows: 1. Storage base; 2. Concrete block body; 3. Support rod; 4. Load-bearing plate; 5. Installation groove; 6. Groove; 7. Hollow groove; 8. First cement receiving groove; 9. Polypropylene fiber layer; 10. Second cement receiving groove; 11. Protruding snap-fit ​​part; 12. Elastic plate; 13. Slot. Detailed Implementation

[0026] 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.

[0027] This specific embodiment is a crack-resistant concrete block, the structural diagram of which is shown below. Figure 1 and Figure 2 As shown, the crack-resistant concrete block includes a storage base 1 and a concrete block body 2 stacked on top of the storage base 1. The outer wall of the concrete block body 2 is provided with a polypropylene fiber layer 9. Both sides of the top surface of the storage base 1 are fixed with support rods 3 inserted into the concrete block body 2. The side walls of the support rods 3 are provided with mounting grooves 5 at equal intervals. The mounting grooves 5 are detachably fixed with load-bearing plates 4 for supporting the concrete block body 2.

[0028] Hollow grooves 7 are symmetrically provided at the center of the concrete block body 2, and the support rods 3 are inserted into the hollow grooves 7. First cement receiving grooves 8 are provided at both ends of the concrete block body 2, and multiple second cement receiving grooves 10 are provided at the center of the top surface of the concrete block body 2.

[0029] The polypropylene fiber layer 9 includes interwoven polypropylene fibers and concrete slurry mixed with the polypropylene fibers. The polypropylene fiber layer 9 increases the adhesion and crack resistance of the concrete block body. At the same time, the first cement receiving groove 8 and the second cement receiving groove 10 on the concrete block body 2 increase the contact area with cement during bricklaying, thereby improving the bricklaying strength and crack resistance of the concrete block body 2.

[0030] like Figure 3 and Figure 4As shown, both ends of the load-bearing plate are provided with slots 13, and both sides of the inner wall of the mounting groove 5 are provided with grooves 6 corresponding to the slots 13. Elastic plates 12 are fixed to both sides of the inner wall of the grooves 6. Each end of the two elastic plates 12 that is far apart is provided with a protruding locking part 11, which is embedded in the groove 6 and abuts against the inner wall of the groove 6. When stored, the concrete block body 2 is fitted between the two support rods 3 through the hollow groove 7. 3. Auxiliary support is provided at the center of the concrete block body 2. After a concrete block body 2 is installed, the load-bearing plate 4 is inserted into the installation groove 5. The inner wall of the installation groove 5 presses the inclined surface of the protruding snap-fit ​​part 11, causing the elastic plate 12 to undergo elastic deformation until the elastic plate 12 passes through the two support rods 3. Then, the protruding snap-fit ​​parts 11 at both ends of the load-bearing plate 4 abut against the inner wall of the installation groove 5 on both sides of the support rod 3 and fix it, so that the detachable support rod 3 supports the concrete block body 2.

[0031] To further improve the crack resistance of concrete blocks, auxiliary materials are added to the concrete blocks. The components of the concrete blocks are as follows:

[0032] Cement: Use ordinary Portland cement (PO) or composite Portland cement (PC) with a strength grade of 32.5 or 42.5.

[0033] Cement accounts for 20% - 30% of the total mass.

[0034] Fly ash: Fly ash can improve the workability of blocks, reduce drying shrinkage, and improve durability; the amount of fly ash used accounts for 10% - 20% of the total mass.

[0035] Slag powder: Slag powder can improve the strength and durability of blocks while reducing the heat of hydration; the amount of slag powder used accounts for 5% - 15% of the total mass.

[0036] Fine sand: As an aggregate, fine sand can enhance the volume stability and strength of the blocks; the amount of fine sand used accounts for 30% - 40% of the total mass.

[0037] Lime: Lime can improve the workability of blocks and regulate the hardening speed; the amount of lime used accounts for 5%-10% of the total mass.

[0038] Polypropylene fiber layer 9: Polypropylene fibers can improve the crack resistance of the blocks and reduce drying shrinkage cracks; the amount of polypropylene fibers accounts for 0.1% - 0.3% of the total mass, and the polypropylene fibers constituting the polypropylene fiber layer 9 are mixed with the pouring slurry of the concrete block body 2.

[0039] Water-reducing agent: Water-reducing agent can improve the workability of blocks, reduce water consumption, and increase strength; the amount of water-reducing agent used accounts for 0.5% - 1.0% of the total mass.

[0040] Expanding agent: Expanding agent can compensate for shrinkage and reduce drying shrinkage cracks. The amount of expanding agent used accounts for 2% - 5% of the total mass.

[0041] Working principle: When using the device of this technical solution, the concrete block body 2 is stored between two support rods 3 through the hollow groove 7. The support rods 3 provide auxiliary support for the center position of the concrete block body 2. After a concrete block body 2 is installed, the load-bearing plate 4 is inserted into the installation groove 5. The inner wall of the installation groove 5 presses the inclined surface of the protruding locking part 11, causing the elastic plate 12 to undergo elastic deformation until the elastic plate 12 passes through the two support rods 3. Then, the protruding locking parts 11 at both ends of the load-bearing plate 4 respectively engage with the installation grooves 5 on both sides of the support rods 3. The wall abutment fixation allows the detachable support rods 3 to support the concrete block body 2. When in use, the concrete block body 2 separates from the two support rods 3 and presses the elastic plate 12 on one side of the load-bearing plate 4 to move towards each other, causing the protruding snap-fit ​​part 11 to retract into the snap-fit ​​groove 13. This allows the load-bearing plate 4 to slide into the mounting groove 5 on the two support rods 3, so that the concrete block body 2 below can slide out from the support rods 3. This facilitates the stacking and support of the concrete block body 2 and improves the ease of use of the concrete block body 2.

[0042] All technical features in this embodiment can be freely combined according to actual needs.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A crack-resistant concrete block, comprising a storage base (1) and a concrete block body (2) stacked on top of the storage base (1), characterized in that, The outer wall of the concrete block body (2) is provided with a polypropylene fiber layer (9). The top surface of the storage base (1) is fixed with support rods (3) inserted into the concrete block body (2). The side walls of the support rods (3) are provided with mounting grooves (5) at equal intervals. The mounting grooves (5) are detachably fixed with load-bearing plates (4) for supporting the concrete block body (2).

2. The crack-resistant concrete block according to claim 1, characterized in that, Hollow grooves (7) are symmetrically opened at the center of the concrete block body (2), and the support rods (3) are inserted into the hollow grooves (7).

3. The crack-resistant concrete block according to claim 2, characterized in that, The concrete block body (2) has a first cement receiving groove (8) at both ends, and a plurality of second cement receiving grooves (10) are provided at the center of the top surface of the concrete block body (2).

4. The crack-resistant concrete block according to claim 1, characterized in that, Both ends of the load-bearing plate (4) are provided with slots (13), and both sides of the inner wall of the mounting groove (5) are provided with grooves (6) corresponding to the slots (13).

5. The crack-resistant concrete block according to claim 4, characterized in that, Both sides of the inner wall of the groove (6) are fixed with elastic plates (12), and the ends of the two elastic plates (12) that are far apart are provided with protruding snap-fit ​​parts (11).

6. The crack-resistant concrete block according to claim 5, characterized in that, The protruding snap-fit ​​part (11) is embedded in the groove (6) and abuts against the inner wall of the groove (6).

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