A precast concrete counterfort

Abstract

This utility model relates to a precast concrete curb, belonging to the technical field of concrete curbs. It includes a precast body made of poured concrete, and a lightweight transport component within the precast body. The lightweight transport component includes a PVC inner tube embedded inside the precast body, with both ends of the PVC inner tube sealed by plugs. Separating blocks are cast at both ends of the PVC inner tube, and internally threaded pipes are embedded inside the separating blocks. Lifting rings are connected to the internal threads of the internally threaded pipes. This precast concrete curb, by embedding the PVC inner tube during the casting process, creates a hollow structure in the precast body, reducing its weight. The internally threaded pipe is embedded at the top of the precast body, and lifting rings are threaded into the internally threaded pipes during transportation and hoisting. This solves the problem of common precast concrete curbs being too heavy, making transportation to the site difficult and requiring excessive manpower and resources, as well as on-site handling challenges.

Description

Technical Field

[0001] This utility model relates to the field of concrete curb technology, specifically a precast concrete curb. Background Technology

[0002] A concrete retaining wall is a vertical concrete component used in construction for waterproofing and moisture protection. It is typically installed at the base of walls in areas prone to water accumulation, such as bathrooms, kitchens, and balconies. It is cast together with the floor slab to block the path of water seepage and prevent moisture from penetrating the upper part of the wall and adjacent rooms. Its height is usually no less than 200 mm, effectively preventing ground water from seeping into the wall, avoiding dampness, mold, and peeling, and protecting interior finishes.

[0003] Structurally, the concrete retaining wall is tightly connected to the main structure, forming an integrated waterproof barrier and enhancing the stability of the building structure. During construction, strict control of the mix proportions and vibration quality is required to ensure a dense, void-free structure. Although seemingly insignificant, the concrete retaining wall is a crucial component of the building's waterproofing system, playing a vital role in ensuring living quality and extending the building's lifespan.

[0004] Traditional methods of constructing concrete upstands present challenges such as difficulty in fixing them and susceptibility to misalignment under stress, due to the need for suspended formwork. Furthermore, the concrete at the upturned section often suffers from poor pouring and surface finish, coupled with a long curing period, leading to extensive repairs and rework later on. This increases both construction costs and time, a persistent problem in the construction industry. Prefabricating concrete upstands in the factory and then transporting them to the site for installation solves the problems of difficult on-site formwork and susceptibility to misalignment. It also improves the dimensional accuracy and surface finish of the upstands. Moreover, the factory's vibration table and curing kiln effectively enhance the quality of concrete pouring and curing.

[0005] However, common precast concrete curbs are quite heavy, making them difficult to transport to the site and requiring more manpower and resources. Therefore, a precast concrete curb is proposed to solve the problems mentioned above. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a precast concrete curb, which has the advantages of being precast in a factory, reducing weight, and facilitating transportation, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A precast concrete curb includes a precast body, which is made of cast concrete, and a lightweight transport component is provided in the precast body.

[0009] The lightweight transport component includes a PVC inner tube embedded inside the prefabricated body. Both ends of the PVC inner tube are sealed with plugs. Separator blocks are cast at both ends of the PVC inner tube. An internally threaded tube is embedded inside the separator block. The internal thread of the internally threaded tube is connected to a lifting ring.

[0010] Furthermore, the prefabricated body is internally provided with stirrups and longitudinal bars, which form the steel reinforcement skeleton of the prefabricated body.

[0011] Furthermore, the prefabricated body is mounted on the mounting surface, and a roughened surface is provided on the bottom of the prefabricated body.

[0012] Furthermore, a bottom waterproof mortar is laid between the prefabricated body and the mounting surface.

[0013] Furthermore, both ends of the prefabricated body are provided with connecting tongues and grooves, and the connecting tongues and grooves between the two prefabricated bodies are filled with butt waterproof mortar.

[0014] Furthermore, alkali-resistant fiberglass mesh is pasted at the joint between the two prefabricated bodies, and an inner waterproof layer is coated on the surface of the prefabricated body.

[0015] Furthermore, the inner waterproof layer is wrapped with alkali-resistant fiberglass mesh, and the surface of the inner waterproof layer is coated with an outer waterproof layer.

[0016] Compared with the prior art, this utility model provides a precast concrete inverted curb, which has the following beneficial effects:

[0017] This precast concrete curb features a hollow structure created by embedding PVC inner pipes during the precast casting process, reducing its weight. An internally threaded pipe is embedded at the top of the precast body, and lifting rings are threaded into the inner pipe for easy installation of lifting ropes during transport and hoisting. This design facilitates the transport and movement of the precast body, solving the common problem of heavy precast concrete curbs that make on-site transport difficult, requiring significant manpower and resources, and presenting challenges for on-site handling. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the structure of this utility model;

[0019] Figure 2 This is a top view of the structural skeleton of this utility model;

[0020] Figure 3 This is a top view of the structure of this utility model.

[0021] Figure 4 This is a three-dimensional structural diagram of the present invention.

[0022] In the diagram: 1. Precast body; 2. PVC inner pipe; 3. Divider block; 4. Internally threaded pipe; 5. Lifting ring; 6. Stirrup; 7. Longitudinal reinforcement; 8. Mounting surface; 9. Roughened surface; 10. Bottom waterproof mortar; 11. Connection tongue and groove; 12. Butt waterproof mortar; 13. Alkali-resistant fiberglass mesh; 14. Inner waterproof layer; 15. Outer waterproof layer. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1 to 4 This embodiment of a precast concrete curb includes a precast body 1, which is cast from concrete and includes lightweight transport components. Casting the precast body 1 in the factory, using standardized templates and molds, solves the problems of difficult on-site formwork and easy mold misalignment, while also improving the dimensional accuracy and surface forming quality of the curb.

[0025] The use of vibrating tables and steam curing kilns in the factory effectively improves the quality of concrete pouring and curing. High-quality reinforced concrete panels are delivered directly to the site for installation, solving the problem of long curing time for cast-in-place reinforced concrete panels and reducing subsequent repair work.

[0026] The lightweight transport component includes a PVC inner tube 2 embedded inside the prefabricated body 1. Both ends of the PVC inner tube 2 are sealed by plugs. Separator blocks 3 are poured at both ends of the PVC inner tube 2. An internally threaded tube 4 is embedded inside the separator block 3. A lifting ring 5 is connected to the internal thread of the internally threaded tube 4.

[0027] Specifically, when the precast body 1 is poured in the factory, a PVC inner tube 2 is placed inside the template, and then the precast body 1 is poured. At the same time, internal threaded tubes 4 are pre-embedded at both ends of the PVC inner tube 2. The top of the internal threaded tube 4 extends to the top of the precast body 1. When transporting and hoisting the precast body 1, the lifting ring 5 is threaded into the internal threaded tube 4.

[0028] Please see Figure 1 and Figure 2 In this embodiment, the prefabricated body 1 is provided with stirrups 6 and longitudinal bars 7 inside, and the stirrups 6 and longitudinal bars 7 form the steel reinforcement skeleton of the prefabricated body 1.

[0029] The prefabricated body 1 is installed on the mounting surface 8, and the bottom of the prefabricated body 1 is provided with a roughened surface 9.

[0030] Secondly, a bottom waterproof mortar 10 is laid between the precast body 1 and the mounting surface 8. This facilitates the connection between the precast body 1 and the mounting surface 8 and improves the adhesion of the bottom waterproof mortar 10 between the precast body 1 and the mounting surface 8.

[0031] Please see Figures 2 to 4 In this embodiment, both ends of the prefabricated body 1 are provided with connecting tongue and groove joints 11, and the connecting tongue and groove joints 11 between the two prefabricated bodies 1 are filled with butt waterproof mortar 12.

[0032] It should be noted that the bottom waterproof mortar 10 and the connecting waterproof mortar 12 are made of M7.5 waterproof mortar, with internal penetrating crystalline waterproof material added to improve the waterproof effect.

[0033] Among them, alkali-resistant fiberglass mesh 13 is pasted at the joint between the two prefabricated bodies 1, and an inner waterproof layer 14 is coated on the surface of the prefabricated body 1.

[0034] Secondly, the inner waterproof layer 14 wraps the alkali-resistant fiberglass mesh 13 inside, and the surface of the inner waterproof layer 14 is coated with an outer waterproof layer 15.

[0035] It should be noted that the alkali-resistant fiberglass mesh 13 is made of medium-alkali or alkali-free fiberglass as the base material and is treated with an alkali-resistant coating. It has the characteristics of high strength, alkali resistance, crack resistance and corrosion resistance, and is widely used in wall reinforcement, external wall insulation, roof waterproofing and reinforcement of cement, plastic and other materials.

[0036] The working principle of the above embodiment is as follows: when the precast body 1 is poured in the factory, a PVC inner tube 2 is placed inside the template, and then the precast body 1 is poured. At the same time, internal threaded tubes 4 are pre-embedded at both ends of the PVC inner tube 2. The top end of the internal threaded tube 4 extends to the top of the precast body 1. When transporting and hoisting the precast body 1, the lifting ring 5 is threaded into the internal threaded tube 4.

[0037] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that can achieve its beneficial effects can be implemented.

[0038] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] 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 precast concrete curb, comprising a precast body (1), characterized in that: The precast body (1) is made of concrete and is equipped with a lightweight transport component. The lightweight transport component includes a PVC inner tube (2) pre-embedded inside the prefabricated body (1). Both ends of the PVC inner tube (2) are sealed by plugs. Both ends of the PVC inner tube (2) are filled with partition blocks (3). The partition blocks (3) are embedded with internal threaded tubes (4). The internal threads of the internal threaded tubes (4) are connected to lifting rings (5).

2. A precast concrete curb according to claim 1, characterized in that: The precast body (1) is provided with stirrups (6) and longitudinal bars (7) inside, and the stirrups (6) and longitudinal bars (7) form the steel reinforcement skeleton of the precast body (1).

3. A precast concrete curb according to claim 1, characterized in that: The prefabricated body (1) is installed on the mounting surface (8), and the bottom of the prefabricated body (1) is provided with a roughened surface (9).

4. A precast concrete upstand according to claim 3, characterized in that: A bottom waterproof mortar (10) is laid between the prefabricated body (1) and the mounting surface (8).

5. A precast concrete upstand according to claim 1, characterized in that: Both ends of the prefabricated body (1) are provided with connecting tongue and groove (11), and the connecting tongue and groove (11) between the two prefabricated bodies (1) is filled with butt waterproof mortar (12).

6. A precast concrete curb according to claim 5, characterized in that: An alkali-resistant fiberglass mesh (13) is pasted at the joint between the two prefabricated bodies (1), and an inner waterproof layer (14) is coated on the surface of the prefabricated body (1).

7. A precast concrete upstand according to claim 6, characterized in that: The inner waterproof layer (14) wraps the alkali-resistant fiberglass mesh (13) inside, and the surface of the inner waterproof layer (14) is coated with an outer waterproof layer (15).

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