A porous and breathable cement component

Abstract

This utility model discloses a porous and breathable cement component, relating to the field of cement component equipment technology. It includes a component body made of cement-based cementitious material. The component body has several breathable channels extending through its thickness. Each breathable channel has a breathable hole at its top and bottom. By using straight holes with a square cross-section extending through the thickness of the component body as breathable channels, this utility model achieves efficient air permeability and drainage, excellent anti-clogging properties, ease of production, and lightweight design while ensuring basic structural functions, significantly improving the overall performance of the component.

Description

Technical Field

[0001] This utility model relates to the field of cement component equipment technology, specifically a porous and breathable cement component. Background Technology

[0002] Cement components are short for precast reinforced concrete structural components. Precast reinforced concrete structural components are generally used in municipal road construction, water supply and drainage construction, and civil building construction. Using cement components can shorten the construction cycle of construction projects and save project costs. They are widely used in airports, container terminals, building communities, landscaping, riverbank protection, and water and soil engineering. In addition to having high strength, strong weather resistance, convenient construction and maintenance, and high cost performance, their green and environmentally friendly performance is the most significant feature that distinguishes them from other concrete products.

[0003] Patent document CN102995819A discloses a cement component, which states that "This invention discloses a cement component, characterized in that it includes: a cement layer; and a metal layer wrapped by the cement layer, wherein the metal layer has a plurality of through holes. This invention greatly increases the impact resistance of existing cement components by adding a metal layer to the cement component, without causing excessive impact on the product's volume."

[0004] However, the cement components described in the aforementioned published documents have technical problems that make it difficult to achieve efficient air permeability and drainage as well as excellent anti-clogging performance.

[0005] Therefore, it is necessary to develop a porous and breathable cement component to improve its air permeability and drainage performance during use. Utility Model Content

[0006] The purpose of this invention is to provide a porous and breathable cement component to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a porous and breathable cement component, comprising a component body made of cement-based cementitious material, wherein the component body has a plurality of breathable channels extending through its thickness direction, and the two ends of the breathable channels form breathable holes at the top and bottom of the component body, respectively. The ventilation channel is a straight through hole with a square cross-section.

[0008] Preferably, the inner wall of the component body is fitted with two layers of reinforcing skeleton, the reinforcing skeleton is a grid structure, and the air-permeable channels are arranged in the grid pores of the reinforcing skeleton.

[0009] Preferably, the top of the reinforcing frame is provided with a first limiting hole and a second limiting hole at the middle and the edge, respectively, and the interior of the first limiting hole and the second limiting hole is filled with cement-based cementitious material.

[0010] Preferably, the reinforcing skeleton is one of a metal grid skeleton, a plastic grid skeleton, or a fiber composite grid skeleton.

[0011] Preferably, the top and bottom of the component body are provided with flow guiding grooves corresponding to the positions of the vent holes, and the flow guiding grooves are connected to the vent holes.

[0012] Preferably, the cementitious material contains aggregate, and the aggregate is coarse aggregate with a single particle size or gradation, and the particle size range is 3 to 8 mm.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention uses a straight through hole with a square cross-section that runs through the thickness of the component body as a ventilation channel. While ensuring the basic structural function, it achieves the beneficial effects of efficient ventilation and drainage, excellent anti-clogging properties, ease of production, and lightweight, significantly improving the overall performance of the component.

[0014] This invention significantly compensates for the strength loss caused by the air permeability channel by embedding two layers of grid-like reinforcing skeleton in the inner wall, solving the problem of the easy brittleness of permeable materials. Moreover, the first and second limiting holes on it form a strong "pin" after being filled with cement, which firmly locks each layer, effectively preventing delamination and displacement during use, and ensuring the integrity and long-term stability of the structure. At the same time, the skeleton material can be a metal grid skeleton, a plastic grid skeleton, or a fiber composite grid skeleton, so that the component can be flexibly adapted to the comprehensive requirements of strength, corrosion resistance and cost in different scenarios such as garden walkways and heavy vehicle yards. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the component body structure of this utility model; Figure 2 This is an exploded three-dimensional schematic diagram of the component body structure of this utility model; Figure 3 This is a front sectional view of the component body structure of this utility model.

[0016] In the figure: 1. Component body; 2. Ventilation channel; 3. Ventilation hole; 4. Reinforcing skeleton; 5. First limiting hole; 6. Second limiting hole; 7. Guide groove. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] Please see Figure 1 and Figure 2 The present invention provides an embodiment of a porous and breathable cement component, comprising a component body 1 made of cement-based cementitious material, wherein the component body 1 is provided with a plurality of breathable channels 2 extending through its thickness direction, and breathable holes 3 are formed at the top and bottom of the component body 1 at both ends of the breathable channels 2, and the breathable channels 2 are straight through holes with a square cross-sectional shape. Furthermore, the straight-through hole design provides a path with minimal resistance from top to bottom, allowing air and water to flow through the component very smoothly and efficiently. This is much more efficient than curved channels, ensuring that the environment on the upper and lower sides of the component can be directly exchanged, thus achieving the function of ventilation. Compared to a circular hole, a square hole has a larger hydraulic radius for the same cross-sectional area. A larger hydraulic radius means that the fluid has less contact with the hole wall during flow, resulting in less frictional resistance. This not only facilitates flow but also makes it less likely to be blocked by suspended solids, silt, etc. Even if some debris enters the hole, it is easier to be directly discharged by gravity or water flow, and it is less likely to stagnate at bends and cause blockages. By introducing regularly arranged channels, the amount of cement material used is significantly reduced, thereby reducing the weight and manufacturing cost of the components. While reducing the material, these channels do not seriously weaken the overall structural integrity of the components. The regular distribution of channels can allow stress to be transmitted more evenly, avoiding the stress concentration problem that may be caused by random pores. Square through holes are easy to achieve in the production process. Using the pre-embedded method, before pouring cement, a series of long strips with square cross-sections are fixed in the mold according to the design position. After the cement solidifies, they are pulled out or dissolved to form a perfect square through hole. The manufacturing method is simple, reliable and low cost. When this porous and breathable cement component is used for ground paving, the square holes allow the soil beneath the cement component to be partially embedded in the holes, which can effectively restrict the horizontal movement of the component, enhance the stability and deformation resistance of the entire paving system, and prevent the bricks from easily shifting.

[0021] Please see Figure 1 , Figure 2 and Figure 3 According to one embodiment of the present invention, a porous and breathable cement component is provided. The inner wall of the component body 1 is fitted with two layers of reinforcing skeleton 4. The reinforcing skeleton 4 has a grid structure, and the breathable channels 2 are arranged in the grid pores of the reinforcing skeleton 4. The middle and the edge of the top of the reinforcing skeleton 4 are respectively provided with a first limiting hole 5 and a second limiting hole 6. The interior of the first limiting hole 5 and the second limiting hole 6 are filled with cement-based cementitious material. The reinforcing skeleton 4 is one of a metal grid skeleton, a plastic grid skeleton or a fiber composite grid skeleton. Furthermore, by embedding the grid-like reinforcing skeleton 4 into the cement matrix, a composite material is formed. The skeleton bears the main tensile and shear stresses, while the cement matrix bears the compressive stress and plays a fixing role, thereby compensating for the strength loss caused by setting a large number of air channels 2, and solving the core problem of low strength and easy brittle fracture of permeable materials. Using two layers of skeleton and embedding them inside the component creates two lines of reinforcement, which can distribute the load more evenly, effectively suppress the generation and propagation of cracks, and improve the component's compressive, flexural and impact resistance. During pouring, cement slurry flows into the first limiting hole 5 and the second limiting hole 6 in the middle and edge of the skeleton. After solidification, it forms "cement pins" that penetrate the skeleton. These "cement pins" firmly lock the upper and lower skeletons and the middle cement matrix into a whole, completely avoiding the possible peeling, displacement or loosening between the skeleton and cement or between different layers under repeated loads or temperature changes, thus ensuring the long-term structural integrity and stability of the component. The reinforcing skeleton 4 is one of a metal grid skeleton, a plastic grid skeleton, or a fiber composite material grid skeleton, which greatly expands the application range of the product and allows the most suitable material to be selected according to specific needs. Metal grid frame: Used in load-bearing applications requiring extremely high strength; Plastic grid frame: used in applications requiring corrosion resistance, weight reduction, and cost control; Fiber composite grid skeleton: used in special environments where complete corrosion prevention and high strength are required; This flexibility allows the component to be adapted cost-effectively to a wide range of scenarios, from everyday landscaping to heavy civil engineering.

[0022] Please see Figure 1 and Figure 2 According to one embodiment of the present invention, a porous and breathable cement component is provided. The top and bottom of the component body 1 are provided with flow guide grooves 7 corresponding to the positions of the breathable holes 3, and the flow guide grooves 7 are connected to the breathable holes 3. The cement-based cementitious material contains aggregates, and the aggregates are coarse aggregates with a single particle size or gradation, with a particle size range of 3 to 8 mm. Furthermore, the top guide groove 7 expands the surface area for receiving water flow, which can quickly collect water flowing on the surface of the component and smoothly guide it into the macroscopic vent 3. This avoids water flow stagnation at the orifice due to surface tension and other factors, thereby greatly improving the initial drainage efficiency. The groove structure raises the actual inlet of the vent 3, making it higher than the surface of the component, which can effectively prevent debris such as mud, dust or leaves from directly blocking the orifice. This provides the first protective barrier for the vent channel 2, ensuring its long-term functionality. The bottom guide groove 7 also helps to quickly diffuse the outflowing water to the base layer, preventing water from accumulating at the outlet and eroding the foundation, thus improving the stability of the entire system. Using coarse aggregate with a single particle size or gradation of 3-8 mm, a large number of uniform and interconnected micropores can be formed between the coarse aggregate particles after cement solidification. These micropores, together with square through holes and flow-guiding grooves 7, constitute a dual permeable system. Even if individual channels are partially blocked, the dense micro network can still maintain excellent water and air permeability, greatly enhancing the redundancy and reliability of the system. Moreover, the coarse aggregate forms a solid skeleton of the cement matrix, significantly improving the compressive strength and wear resistance of the components, enabling them to withstand greater loads.

[0023] The working principle involves setting a straight through hole with a square cross-section that runs through the thickness of the component body 1 as a ventilation channel 2. While ensuring the basic structural function, it achieves the beneficial effects of efficient ventilation and drainage, excellent anti-clogging properties, ease of production, and lightweight, significantly improving the overall performance of the component. By embedding two layers of grid-like reinforcing skeleton 4 on the inner wall, the strength loss caused by the ventilation channel 2 is significantly compensated, solving the problem of easy brittleness and fracture of permeable materials. Moreover, the first limiting hole 5 and the second limiting hole 6 on it form a strong "pin" after being filled with cement, which firmly locks each layer, effectively preventing delamination and displacement during use, and ensuring the integrity and long-term stability of the structure. At the same time, the reinforcing skeleton can be made of metal grid skeleton, plastic grid skeleton, or fiber composite material grid skeleton, so that the component can be flexibly adapted to the comprehensive requirements of strength, corrosion resistance, and cost in different scenarios such as garden walkways and heavy vehicle yards.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A porous and breathable cement component, comprising a component body (1) made of cement-based cementitious material, characterized in that: The component body (1) has several ventilation channels (2) running through its thickness direction inside, and ventilation holes (3) are formed at the top and bottom of the component body (1) at both ends of the ventilation channels (2). The ventilation channel (2) is a straight through hole with a square cross-section; The inner wall of the component body (1) is fitted with two layers of reinforcing skeleton (4), the reinforcing skeleton (4) is a grid structure, and the air passage (2) is arranged in the grid pores of the reinforcing skeleton (4). The top center and edge of the reinforcing skeleton (4) are respectively provided with a first limiting hole (5) and a second limiting hole (6), and the interior of the first limiting hole (5) and the second limiting hole (6) are filled with cement-based cementitious material.

2. The porous and breathable cement component according to claim 1, characterized in that: The reinforcing skeleton (4) is one of a metal grid skeleton, a plastic grid skeleton, or a fiber composite grid skeleton.

3. A porous and breathable cement component according to claim 1, characterized in that: The top and bottom of the component body (1) are provided with flow guide grooves (7) corresponding to the positions of the vent holes (3), and the flow guide grooves (7) are connected to the vent holes (3).

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