Pervious concrete road brick with self-cleaning function and manufacturing method thereof

Abstract

The invention discloses a pervious concrete road brick with a self-cleaning function and a manufacturing method thereof, and relates to the technical field of pervious concrete bricks. The pervious concrete road brick with the self-cleaning function comprises pervious concrete layers on six surfaces of a brick body, a filter screen which is obliquely arranged is fixed in the brick body through anchor bolts, and an impurity outlet is formed in the pervious concrete layer at the end of the filter screen at the lower position. The pervious concrete road brick has a good self-cleaning function, sundries are discharged by means of the filter screen and the washing effect of rainwater, the pervious effect is ensured and can be kept for a long time, the service life of the pervious concrete road brick is prolonged, the replacement frequency is reduced, and the cost is saved. And meanwhile, the pervious concrete road brick is very convenient to move and carry, can be completed manually without instruments, and is relatively high in construction flexibility, the compressive strength of the pervious concrete road brick can reach 15MPa or above, and the pervious concrete road brick has very good bearing capacity and excellent crack resistance while realizing high water permeability.

Description

Technical Field

[0001] This invention relates to the field of permeable concrete brick technology, and in particular to a permeable concrete road brick with self-cleaning function and its manufacturing method. Background Technology

[0002] Permeable concrete bricks, due to their excellent permeability, can effectively alleviate urban road flooding and replenish groundwater resources, and are widely used in the paving of municipal and civil sites such as parks, squares, and parking lots. Related manufacturing technologies have also developed rapidly. However, the application scenarios of existing permeable concrete bricks have significant limitations. Their permeable layer is composed of large-particle sand and gravel, and the porous structure is easily blocked by soil, fallen leaves, and small debris. In environments with a high amount of debris, the permeability will rapidly decrease, significantly shortening the lifespan of the bricks and increasing the cost of later maintenance and replacement. Furthermore, traditional permeable concrete bricks generally suffer from insufficient compressive strength, weak load-bearing capacity, and poor crack resistance, making them unsuitable for complex scenarios with high pedestrian and vehicular traffic. Additionally, the lack of a dedicated handling structure makes moving and installation cumbersome and reduces construction flexibility. In summary, the lack of self-cleaning ability, insufficient mechanical properties, and poor ease of use and construction of existing permeable concrete bricks have limited their widespread application. Therefore, developing a permeable concrete road brick with self-cleaning function, high load-bearing capacity, and easy construction, as well as its manufacturing method, has become an urgent technical problem to be solved in this field. Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a permeable concrete road brick with self-cleaning function and its manufacturing method. It achieves self-cleaning through its own design, extends its service life, and has a relatively wide range of applications while ensuring permeability.

[0004] To achieve this technical objective, the present invention adopts the following solution: The permeable concrete road brick with self-cleaning function includes a permeable concrete layer on all six sides of the brick body. An inclined filter screen is fixed inside the brick body by anchor bolts. The permeable concrete layer at the lower end of the filter screen has a debris outlet.

[0005] Permeable concrete bricks are mainly made of large-particle sand and gravel. The permeable concrete layer has large pores. Therefore, a filter screen is installed inside to realize the self-cleaning function of the brick. Rainwater can flush out some light debris through the debris outlet, and the deposited heavy debris is manually cleaned periodically through the debris outlet.

[0006] Furthermore, horizontally arranged connecting plates are fixedly connected to both ends of the filter screen. The connecting plates are connected to a filter screen fixing plate by fixing screws. After the filter screen fixing plate and the connecting plate are connected, they are poured into the permeable concrete layer.

[0007] Furthermore, the diameter of the filter screen openings is 0.15~1.5mm, and the inclination angle is 2°~8°.

[0008] Furthermore, there are fixing plates extending laterally on both sides of the filter screen, and anchor bolts penetrate the fixing plates and are cast into the permeable concrete layer on the side of the brick body. At the same time, the two ends of the anchor bolts extend into the upper and lower permeable concrete layers of the brick body, respectively.

[0009] The present invention also provides a method for manufacturing the above-mentioned permeable concrete road bricks with self-cleaning function, comprising the following steps: Formwork: Install the permeable concrete pavement brick mold on a flat platform and fix it in place. Apply release agent evenly to the inside of the mold and apply retarder to the platform surface. Filter screen fixing: Determine the position of the filter screen fixing plate according to the filter screen tilt angle, with the maximum tilt angle starting from 30mm down from the top surface; After the anchor bolts are passed through the filter screen fixing plate, they are pre-embedded in the designated positions; Marking the position of the first layer of permeable concrete: According to the position of the pre-embedded filter screen fixing plate, connect the two filter screen fixing plates with white lines and fix them straight. Multiple white lines form a plane, which is the top surface after the first layer of permeable concrete is poured. First layer of permeable concrete pouring: Pour the first layer of permeable concrete to the marked position. The pouring process should be carried out in layers. Filter screen installation: Install the filter screen on the filter screen fixing plate and fix the filter screen with fixing screws; Second layer of permeable concrete pouring: Pour the second layer of permeable concrete in layers, pouring to the height of the mold. After pouring, cover with plastic film and remove the mold on the third day. After removing the mold, water curing is carried out. All processes of permeable concrete paving bricks are completed.

[0010] Furthermore, one filter screen fixing plate is pre-embedded 30mm below the top surface, and another filter screen fixing plate is pre-embedded below the debris outlet.

[0011] Furthermore, the anchor bolts are spaced 300mm apart, with the outermost anchor bolts 30mm from the edge of the permeable concrete pavement brick, and the anchor bolt length is 75mm-95mm.

[0012] Furthermore, the permeable concrete layer is poured in layers, each layer being 30mm thick. After each layer is poured, it needs to be smoothed and compacted with a trowel.

[0013] Furthermore, the maintenance period is 7 days, and the watering frequency during maintenance is once in the morning and once in the afternoon.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: This permeable concrete pavement brick has excellent self-cleaning function, relying on the filtering effect of filters and rainwater to remove debris, ensuring permeability and maintaining it for a long time, thus extending the service life of the permeable concrete pavement brick, reducing replacement frequency, and saving costs. At the same time, this permeable concrete pavement brick is very convenient to move and transport, requiring no machinery or manual labor, offering high construction flexibility. Furthermore, the compressive strength of this permeable concrete pavement brick can reach over 15MPa, achieving high permeability while providing excellent load-bearing capacity and crack resistance. It can be effectively applied even in parking lots, parks, squares, and other similar scenarios. Having been tested in practical applications, this invention is a highly economic and socially beneficial invention with significant practical importance. Attached Figure Description

[0015] Figure 1 A side cross-sectional view of a permeable concrete road brick with self-cleaning function provided by the present invention. Figure 2 A top cross-sectional view of the permeable concrete road brick with self-cleaning function provided by the present invention; Figure 3 The first layer of permeable concrete pouring calibration diagram provided for this invention; The markings in the diagram are: 1. Permeable concrete layer; 2. Filter screen; 3. Anchor bolt; 4. Connecting plate; 5. Filter screen fixing plate; 6. Long blind hole; 7. Debris outlet; 8. Fixing plate; 9. Fixing screw; 10. White line. Detailed Implementation

[0016] To fully understand the purpose, features and effects of the present invention, the present invention will be described in detail through the following specific embodiments, but the present invention is not limited thereto.

[0017] like Figure 1 and Figure 2 As shown, the present invention provides a permeable concrete road brick with self-cleaning function. The brick body is a hollow cube structure with six sides of permeable concrete layer 1. An inclined filter screen 2 is fixed inside the brick body by anchor bolts 3. One end of the filter screen 2 is relatively high, and the other end is relatively low. A debris outlet 7 is opened on the side of the permeable concrete layer at the lower end of the filter screen. Preferably, the debris outlet 7 can also serve as a conveying port. At the same time, a long blind hole 6 is opened at the corresponding position of the permeable concrete layer on the opposite side of the debris outlet 7 as another conveying port.

[0018] Both ends of the filter screen 2 are fixedly connected to horizontally arranged connecting plates 4. The two connecting plates 4 are respectively connected to a filter screen fixing plate 5 by fixing screws 9. After the filter screen fixing plate 5 and the connecting plates 4 are connected, they are poured into the permeable concrete layer at the location. Preferably, the diameter of the screen hole of the filter screen 2 is 0.15~1.5mm, and the inclination angle is 2°~8°.

[0019] The filter screen 2 has two side-extending fixing plates 8 on both sides, with through holes in the fixing plates 8. Anchor bolts 3 pass through the fixing plates 8 and are cast into the permeable concrete layer on the side of the brick. At the same time, the two ends of the anchor bolts 3 extend vertically into the permeable concrete layers above and below the brick. In actual construction, the length of the anchor bolts 3 is 75mm-95mm.

[0020] The method for manufacturing permeable concrete paving bricks with self-cleaning function includes the following steps: Formwork erection: Install the permeable concrete paving brick molds on a flat platform and secure them with reliable measures. Apply a release agent evenly to the inside of the mold and a retarder to the platform surface. The release agent and retarder used are all commonly available commercial agents that meet the basic functions of demolding and retarding.

[0021] Pre-embedded filter screen fixing plate: The position of the filter screen fixing plate is determined according to the tilt angle of the filter screen. The tilt angle is 2°-8°, and the maximum tilt angle starts from 30mm down from the top surface. Therefore, one filter screen fixing plate is pre-embedded 30mm down from the top surface, and the other filter screen fixing plate is pre-embedded slightly below the debris outlet.

[0022] Anchor bolt pre-embedding: The anchor bolts are pre-embedded in the designated positions in the permeable concrete layer on the side, with the anchor bolts spaced 300mm apart. The two outermost anchor bolts are 30mm away from the edge of the permeable concrete paving brick, and the anchor bolt length is 75mm-95mm.

[0023] The location for pouring the first layer of permeable concrete is marked as follows: Figure 3 As shown, based on the position of the pre-embedded filter screen fixing plates, two filter screen fixing plates are connected and taut with white lines 10 to form an inclined virtual plane to simulate the position of the filter screen. This plane is the top surface after the first layer of permeable concrete is poured. The function of the filter screen is to filter out impurities, so the filter screen is installed at an incline in the brickwork. However, the filter screen cannot be pre-installed, as pre-installation would make vibration construction of the permeable concrete below the filter screen difficult. Therefore, four white lines are used to simulate the position of the filter screen, and the filter screen is installed after the concrete below the filter screen is poured.

[0024] First layer of permeable concrete pouring: Pour the first layer of permeable concrete to the marked position. During the pouring process, it should be done in layers of 30mm each. Every 30mm layer should be compacted with a flat trowel. Do not use a plate vibrator, because the plate vibrator has a better vibration effect, and after vibration, there will be more cement paste on the contact surface with the formwork, which will seriously affect the permeability. Compacting with a flat trowel can make the permeable concrete as dense as possible, while ensuring the permeability effect, achieving two goals at once.

[0025] Filter screen installation: Install the filter screen on the filter screen fixing plate and fix the filter screen with fixing screws.

[0026] Second layer of permeable concrete pouring: Pour the second layer of permeable concrete in layers, each 30mm thick, and tamp it down with a flat trowel until it reaches the height of the mold. After pouring, cover it with plastic film and remove the mold on the third day.

[0027] After demolding, water curing is carried out for 7 days, with watering frequency once in the morning and once in the afternoon. Once all the processes for permeable concrete road bricks are completed, they can be used in various scenarios.

[0028] The permeable concrete paving bricks prepared according to this application not only have good permeability but also excellent self-cleaning ability. They do not suffer from reduced permeability or complete loss of permeability due to excessive debris that cannot be discharged. Furthermore, these permeable concrete paving bricks have good load-bearing capacity, with a compressive strength exceeding 15 MPa and excellent crack resistance. They can meet the application requirements of permeable concrete in various scenarios and are mainly used for the paving of permeable concrete pavements in parks, parking lots, squares, etc., as well as the production of precast permeable concrete paving bricks. They play a very important role and have practical value in solving the problem of road surface water accumulation.

[0029] Finally, it should be noted that the above-listed embodiments are merely preferred embodiments of the present invention. Of course, those skilled in the art can make modifications and variations to the present invention. If such modifications and variations fall within the scope of the claims of the present invention and their equivalents, they should be considered as being within the protection scope of the present invention.

Claims

1. A permeable concrete paving brick with self-cleaning function, comprising permeable concrete layers on all six sides of the brick body, characterized in that, An inclined filter screen is fixed inside the brick body by anchor bolts, and a debris outlet is opened in the permeable concrete layer at the lower end of the filter screen.

2. The permeable concrete paving brick with self-cleaning function according to claim 1, characterized in that, The filter screen is fixedly connected to horizontally arranged connecting plates at both ends. The connecting plates are connected to a filter screen fixing plate by fixing screws. After the filter screen fixing plate and the connecting plate are connected, they are poured into the permeable concrete layer.

3. The permeable concrete paving brick with self-cleaning function according to claim 1, characterized in that, The filter screen has a mesh diameter of 0.15~1.5mm and an inclination angle of 2°~8°.

4. The permeable concrete paving brick with self-cleaning function according to claim 1, characterized in that, The filter screen has fixed plates extending to the sides. Anchor bolts pass through the fixed plates and are cast into the permeable concrete layer on the side of the brick. At the same time, the two ends of the anchor bolts extend into the upper and lower permeable concrete layers of the brick.

5. The method for manufacturing permeable concrete paving bricks with self-cleaning function as described in any one of claims 1-4, characterized in that, Includes the following steps: Formwork: Install the permeable concrete pavement brick mold on a flat platform and fix it in place. Apply release agent evenly to the inside of the mold and apply retarder to the platform surface. Filter screen fixing: Determine the position of the filter screen fixing plate according to the filter screen tilt angle, with the maximum tilt angle starting from 30mm down from the top surface; After the anchor bolts are passed through the filter screen fixing plate, they are pre-embedded in the designated positions; Marking the position of the first layer of permeable concrete: According to the position of the pre-embedded filter screen fixing plate, connect the two filter screen fixing plates with white lines and fix them straight to form an inclined virtual plane to simulate the position of the filter screen. This plane is the top surface after the first layer of permeable concrete is poured. First layer of permeable concrete pouring: Pour the first layer of permeable concrete to the marked position. The pouring process should be carried out in layers. Filter screen installation: Install the filter screen on the filter screen fixing plate and fix the filter screen with fixing screws; Second layer of permeable concrete pouring: Pour the second layer of permeable concrete in layers, pouring to the height of the mold. After pouring, cover with plastic film and remove the mold on the third day. After removing the mold, water curing is carried out. All processes of permeable concrete paving bricks are completed.

6. The method for manufacturing permeable concrete road bricks with self-cleaning function according to claim 5, characterized in that, One filter screen fixing plate is embedded 30mm below the top surface, and the other filter screen fixing plate is embedded below the debris outlet.

7. The method for manufacturing permeable concrete road bricks with self-cleaning function according to claim 5, characterized in that, The anchor bolts are spaced 300mm apart, with the two outermost anchor bolts 30mm from the edge of the permeable concrete pavement brick, and the anchor bolt length is 75mm-95mm.

8. The method for manufacturing permeable concrete paving bricks with self-cleaning function according to claim 5, characterized in that, The permeable concrete layer is poured in layers, each layer being 30mm thick. After each layer is poured, it needs to be smoothed and compacted with a trowel.

9. The method for manufacturing permeable concrete road bricks with self-cleaning function according to claim 5, characterized in that, The maintenance period is 7 days, and watering should be done once in the morning and once in the afternoon during the maintenance period.

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