KR102242318B1 - Lightweight porous base-layer block and road paving structure comprising the same - Google Patents

Abstract

The present invention relates to a lightweight permeable base layer block and a floor pavement structure comprising the same. The porous base-layer block according to the present invention comprises: a synthetic resin structure having a network structure including a plurality of voids; Masato accommodated in the plurality of voids of the synthetic resin structure; And a layer containing soil or turf, which is accommodated in the plurality of voids of the synthetic resin structure and positioned on the porous concrete composition. The water permeable base block includes a lightweight porous concrete composition inside the base block, so that rainwater permeability and temporary storage capacity are improved compared to the prior art. By using this, it is possible to store rainwater and conserve groundwater in the lower space of the floor pavement structure.Therefore, problems such as urban heat island phenomenon caused by an increase in impermeable area within urban development space, or as a result. Problems such as deterioration of the urban water management environment and deterioration of water quality can be solved.

Description

{LIGHTWEIGHT POROUS BASE-LAYER BLOCK AND ROAD PAVING STRUCTURE COMPRISING THE SAME}

The present invention relates to a lightweight permeable base layer block and a floor pavement structure comprising the same. More specifically, it relates to a base-layer block having a small weight and water permeability, and a floor pavement structure including the same.

Due to urban development, the natural ground is gradually shrinking and the artificial ground is expanding further. As a result, the urban development space is gradually losing its natural circulation function as the area where water cannot permeate, that is, the impermeable area, is wider than in the natural environment. This deterioration of ecological soundness is not only a major cause of deteriorating the quality of life of urban residents, but can also cause various ecological and environmental problems such as air pollution, urban heat island phenomenon, and urban flooding.

Moreover, as the existing water circulation system in the city is destroyed due to climate change, the water management conditions and environment are deteriorating.This is due to the increase in impermeable area, increasing urban flooding and flooding, frequent urban high temperatures, and urban rivers. It is causing deterioration of water quality due to the phenomenon of drying of the water. In particular, urban areas and roadsides in the summer are getting a lot of damage due to ground heat of 50°C or higher and vehicle exhaust gas, and the increase in urban temperature is accelerating further as artificial structures increase and green areas decrease.

As one of the methods for solving this problem, the floor pavement structure can be configured to have water permeability. However, the conventional water permeable floor pavement structure has poor durability and load-bearing capacity, and therefore requires a separate strength reinforcement, and it is difficult to freely change its shape according to the road alignment.

Korean Registered Patent Publication No. 10-1526286

Therefore, in the present invention, the base-layer, which is the lower layer of the floor pavement structure, is composed of a block in the form of a synthetic resin structure with excellent bearing capacity and load distribution function, and a concrete composition having excellent water permeability while being light weight is used as the base layer block. A lightweight permeable base block and a floor pavement structure including the same, which can be put inside and combined to ensure the durability of the bottom of the permeable block, the permeability and temporary storage of rainwater, stable workability, and quick recovery and economical efficiency when excavating underground burials. It aims to provide.

The object is a synthetic resin structure having a network structure including a plurality of voids; Masato accommodated in the plurality of voids of the synthetic resin structure; And a layer containing soil or turf, which is accommodated in the plurality of voids of the synthetic resin structure and positioned on the porous concrete composition.

The synthetic resin structure may include a plurality of unit structures fastened to be separated from each other.

The synthetic resin structure may include sidewalls defining an outer surface of the synthetic resin structure; A plurality of support pillars disposed at intervals within the space surrounded by the sidewalls; And a cover coupled to upper portions of the plurality of support pillars and partitioning upper ends of the plurality of unit structures.

The synthetic resin structure may further include a bottom plate defining a bottom surface of the unit structure and having one or more holes formed thereon.

In addition, the sidewall may include one or more fastening grooves, and the synthetic resin structure may include a plurality of synthetic resin structures coupled to each other using a fixing support inserted into the fastening groove.

The water permeable base layer block may further include a porous concrete composition accommodated in the plurality of voids and positioned under the Masato, and formed by mixing bottom ash, recycled aggregate, cement, fly ash, and water, followed by stirring.

The porous concrete composition may have a compressive strength of 5 MPa or more. In one embodiment, the porosity of the porous concrete composition may be 30% or more. In addition, in one embodiment, the porous concrete composition may have a water absorption rate of 20% or more.

The permeable base layer block is configured to partially cover the upper surface of the layer including the soil or turf, and may further include a permeable cover having one or more openings through which moisture penetrates.

The water permeable cover may be formed of a material containing an ultraviolet stabilizer.

The layer including the soil or turf may have a height of 5 to 15 cm.

The porosity of Masato may be 20% or more.

According to the lightweight permeable base layer block and the floor pavement structure including the same according to the present invention, the rainwater permeability and temporary storage capacity of the water permeable base layer are improved compared to the prior art because a lightweight porous concrete composition is included in the base block. It is possible to prevent and/or reduce the occurrence of sedimentation caused by soil scouring in the event of a runoff or channel formation.

And according to the lightweight permeable base layer block and the floor pavement structure including the same according to the present invention, it is possible to store rainwater in the space under the pavement and to conserve groundwater, so that the increase in the impermeable area within the urban development space It is possible to solve problems such as the urban heat island phenomenon that occurs, and problems such as deterioration of water management environment or deterioration of water quality such as urban flooding that occurs as a result.

In addition, according to the lightweight permeable base layer block and the floor pavement structure including the same according to the present invention, it is possible to distribute the load while having excellent support for the upper load, and as a structure in which a number of blocks are fastened, it is easy to construct and to the road alignment. It is possible to form a structure freely, recover quickly and safely when excavating underground burials, maintain eco-friendliness without being deformed even when exposed to UV rays, and have high resistance to calcium chloride and freezing and thawing in winter.

In particular, the lightweight permeable base layer block and the floor pavement structure including the same according to the present invention can integrally fasten the upper surfaces of the synthetic resin structures by means of a fixing support, so that the upper load is dispersed and the support is strengthened, and the structure Even when a temporary sinkhole occurs due to loss of soil to the bottom through fastening, it is possible to prevent the structure from being depressed and maintain flatness. According to the above feature of the present invention, since partial subsidence of the floor pavement structure can be visually identified, there is an advantage of preventing personal and property damage caused by the sinkhole.

1 is a structural diagram of a floor pavement structure including a porous base-layer block according to an embodiment of the present invention,
2A is an exploded perspective view of a water permeable base layer block according to an embodiment of the present invention,
2B is an exploded perspective view of the bottom of the permeable base layer block shown in FIG. 2A,
3 is a perspective view of a water permeable base layer block according to another embodiment,
4 is a photograph of a water permeable base layer block filled with a porous concrete composition according to an embodiment of the present invention,
5A is a conceptual diagram showing a problem of insufficient support capacity of a conventional floor pavement structure,
5B is a cross-sectional view for explaining the supporting force of the floor pavement structure according to an embodiment of the present invention,
6A and 6B are cross-sectional views for explaining the permeability of the floor pavement structure according to an embodiment of the present invention,
7 is a conceptual diagram for explaining the maintenance (retention) performance of the floor pavement structure according to an embodiment of the present invention,
8A is a cross-sectional view of a water permeable base layer block according to another embodiment of the present invention,
Figure 8b is a plan view of the permeable base layer block shown in Figure 8a,
8C is a photograph of the permeable base layer block according to the embodiment shown in FIGS. 8A and 8B.

Hereinafter, a lightweight permeable base layer block and a floor pavement structure including the same according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a structural diagram of a floor pavement structure including a porous base-layer block according to an embodiment of the present invention.

Referring to FIG. 1, the floor pavement structure according to the present embodiment includes a permeable base layer block 20 located on the lower ground layer 10, and a surface layer 40 located on the water permeable base layer block 20. do. The ground layer 10 is a floor surface on which a floor pavement structure is installed, and refers to soil and the like located on the ground, and the permeable base layer block 20 is placed on the ground layer 10 to form a lower layer of the floor pavement structure.

In an embodiment of the present invention, a planarization layer 30 is further positioned between the water permeable base layer block 20 and the surface layer 40, and the planarization layer 30 is used to constantly adjust the surface height of the surface layer 40. It is a layer whose thickness is controlled. The planarization layer 30 and the surface layer 40 are made of a material through which moisture can pass. For example, the planarization layer 30 and the surface layer 40 may be formed by pressing and compressing a molding mortar containing soil and recycled aggregate as main materials using a mold, but is not limited thereto.

In one embodiment of the present invention, the surface layer 40 is made of a plurality of permeable blocks 400. For example, the polyhedral permeable blocks 400 may be arranged in a one-dimensional or two-dimensional array and connected to each other to form the surface layer 40. Through this structure, it is possible to more easily penetrate the surface layer 40 of rainwater.

In the water permeable base layer block 20, a concrete composition 210 that is lightweight and porous and has water absorption and water permeability is accommodated. The concrete composition 210 may be a material including a main material based on bottom ash or recycled aggregate, and a binder based on cement, fly ash, water and other admixtures, and a pigment.

For example, the concrete composition 210 may have a composition as shown in Table 1 below.

Main material bookbinder water Etc Bottom ash
Particle diameter
4~10mm Bottom ash
Particle diameter
1~3mm Recycled aggregate
Particle diameter
1~10mm Sum cement Fly ash water Admixture,
Pigment, etc. 50-100% 0-50% 0~40% 100% 20~45% of main material 0~25% of main material 25-40% of the binder Of the binder
Within 5%

In Table 1, the% of each material represents a weight ratio, and the bottom ash-based concrete composition 210 having the composition shown in Table 1 has the advantage of reducing the weight of the product and increasing the water permeability and porosity. Or, the concrete composition ( 210) may have a composition as shown in Table 2 below.

Main material bookbinder water Etc Bottom ash
Particle diameter
1~10mm Recycled aggregate
Particle diameter
5mm Sum cement Fly ash water Admixture,
Pigment, etc. 40-100% 0~60% 100% 10~25% of main material 0~15% of main material 25-40% of the binder Within 5% of the binder

In Table 1,% of each material represents a weight ratio, and in the case of the aggregate-based concrete composition 210 shown in Table 2, there is an advantage in that the weight of the product can be increased and durability and strength can be increased. FIG. 2A is an exemplary embodiment of the present invention. It is a perspective view of a water permeable base layer block according to an embodiment, and FIG. 2B is a bottom perspective view of the water permeable base layer block shown in FIG. 2A.

2A and 2B, the permeable base layer block 20 according to the present embodiment includes a synthetic resin structure 200 having a shape in which a plurality of unit structures 220 are connected in a three-dimensional manner while having a network structure. ) Can be. Each unit structure 220 has a void capable of storing rainwater while passing rainwater, and the unit structures 220 may be arranged in a one-dimensional or two-dimensional array to form the synthetic resin structure 200.

Each unit structure 220 of the synthetic resin structure 200 includes a side wall 204 defining an outer surface of the synthetic resin structure 200, and a support column 202 disposed at predetermined intervals in a space surrounded by the side wall 204 And, it is coupled to the upper end of the support column 202 is defined by a cover 203 that partitions the upper end of each unit structure 220. In addition, an opening 201 for allowing rainwater to penetrate into the voids of the synthetic resin structure 200 may be formed in the sidewall 204. The opening 201 may have a slit shape extending in one direction, but is not limited thereto.

In the voids of the synthetic resin structure 200, a concrete composition 210 (FIG. 1) having light weight, porosity, water absorption and water permeability is accommodated. The support column 202, the cover 203, and the side wall 204 of the synthetic resin structure 200 are made of a material that is easy to deform while having a low weight, and may be made of, for example, polyethylene (PolyEthylene; PE). , But is not limited thereto. By using the synthetic resin structure 200 of this type, it is possible to form the permeable base layer block 20 in an arbitrary shape suitable for the road alignment in which the floor pavement structure is to be installed.

For example, the synthetic resin structure 200 may be configured such that the unit structure 220 forms an array of 150 to 200 horizontally and 400 to 500 vertically on a plane. In addition, the synthetic resin structure 200 may be configured such that the unit structures 220 are stacked in a vertical direction so that the above-described planar array vertically forms 5 to 15 layers. However, this is exemplary, and the shape of the array formed by the unit structure 220 in the synthetic resin structure 200 is not limited thereto.

The sidewall 204 of the synthetic resin structure 200 includes one or more fastening grooves 206, and a fixing support 260 or an outer wall support 265 may be coupled to the fastening groove 206. The fixing support 260 includes a body 261 to be inserted into the fastening groove 206 and a cover 262 covering the upper end of the body 261, and is inserted into the fastening groove 206 to form a synthetic resin structure 200. It plays the role of bonding with other synthetic resin structures. On the other hand, the outer wall support 265 serves to block the fastening groove 206 that is not coupled with other synthetic resin structures in the synthetic resin structure 200.

The bottom plate 205 of the synthetic resin structure 200 forms the bottom surface of the voids of the synthetic resin structure 200. In one embodiment, the bottom plate 205 is composed of a plurality of divided plates corresponding to each unit structure 220 of the synthetic resin structure 200, and may define a bottom surface of each unit structure 220. Like the support pillar 202, the cover 203, and the side wall 204, the bottom plate 205 may also be made of PE, but is not limited thereto. Each bottom plate 205 is formed with one or more holes 250 for allowing moisture to penetrate into the pores of the unit structure 220 from below the water permeable base layer block 20.

3 is a perspective view of a water permeable base layer block according to another embodiment.

Referring to FIG. 3, a synthetic resin structure 200 made of unit structures 220 in a water permeable base layer block may be combined with another synthetic resin structure 200 using a fixing support 260. For fastening with the fixing support 260, the sidewall 204 of the synthetic resin structure 200 includes one or more fastening grooves 206. In order not to be easily separated after the fixing support 260 is fastened to the fastening groove 206, the fastening groove 206 may have a shape in which the width of the groove increases as it enters the inside compared to the outer surface of the sidewall 204. have. In addition, the fastening groove 206 may have a shape that extends in a vertical direction from the bottom to the top of the sidewall 204 and decreases in width from the top to the bottom.

A pair of synthetic resin structures 200 having the fastening grooves 206 having such a shape are arranged adjacent to each other, and the fastening grooves 206 formed on the side walls 204 of each synthetic resin structure 200 abut each other. The fixing support 260 may be commonly inserted into the fastening groove 206 of the structure 200. That is, the fixing support 260 has a cross-sectional shape corresponding to a pair of fastening grooves 206 facing each other. Since each of the fastening grooves 206 has a small width on the outer surface of the synthetic resin structure 200 and a large width on the inner side, the fixing support 260 has a correspondingly small width at the middle portion and an increased width at both ends. Has. In addition, since the fastening groove 206 has a narrower width as it goes downward, the fixing support 260 has a wedge shape whose width decreases downward so that it can be inserted into the fastening groove 206.

By using the fastening groove 206 and the fixing support 260 having such a shape, the bonding force between the synthetic resin structures 200 can be strengthened and the synthetic resin structures 200 can be firmly coupled to each other. However, this is exemplary, and the shape of the fixing support or the fastening groove for use in the permeable base layer block according to the embodiments is not limited thereto.

4 is a photograph of a water permeable base layer block filled with a porous concrete composition according to an embodiment of the present invention.

As shown in FIG. 4, the concrete composition accommodated in the voids of the water permeable base layer block 20 includes a large number of voids therein to allow penetration and retention of rainwater. The concrete composition 210 of this type may be formed by mixing bottom ash, recycled aggregate, cement, and fly ash, followed by stirring. More specifically, bottom ash, recycled aggregate, cement, fly ash, pigments, admixtures, etc. may be further supplied to the cement mixing tank. Porous concrete composition is obtained by stirring bottom ash, recycled aggregate, cement, fly ash, and water in a cement mixing tank, which can be collected in a stirring tank at the bottom of the cement mixing tank.

The method of manufacturing the porous concrete composition as described above is disclosed in detail in Patent Application Publication No. 10-1272626 registered by the present applicant and the inventor, and thus a detailed description thereof will be omitted.

In one embodiment of the present invention, the porous concrete composition 210 accommodated in the pores of the water permeable base layer block 20 has a compressive strength of 5 MPa or more in order to obtain excellent water permeability and water retention performance. And in one embodiment of the present invention, the porous concrete composition 210 has a water absorption rate of 20% or more. In addition, in one embodiment of the present invention, the porous concrete composition 210 has a porosity of 30% or more. Furthermore, in one embodiment of the present invention, the porous concrete composition 210 has a water permeability coefficient of 1.0×10 ^-1 cm/s or more. In order for the porous concrete composition 210 to have these characteristics, the bottom ash, recycled aggregate, fly ash, the ratio of water and cement, the ratio of water and cement, and the agitation speed of the bottom ash, recycled aggregate, fly ash, which are introduced during stirring for the generation of the porous concrete composition 210, can be properly adjusted I can.

5A is a conceptual diagram illustrating a problem of insufficient support capacity of a conventional floor pavement structure. 5A, in the conventional pavement structure, since the base block was located directly on the lower ground, the edge of the base block was broken, or due to the loss and collapse of crushed stone layers such as gravel and sand in the lower ground. Due to the possibility of floating infiltration, the bearing capacity for the upper load was insufficient.

On the other hand, FIG. 5B is a cross-sectional view for explaining the supporting force of the floor pavement structure according to an embodiment of the present invention. 5B, in an embodiment of the present invention, a permeable base layer block 20 is installed between the lower fingerboard 20 and the surface layer 40, and the water permeable base layer block 20 is a synthetic resin structure 200 having a network structure. Since the concrete composition 210 has a form accommodated therein, there is no fear of losing the soil, and there is a difference in excellent support for the upper load.

6A is a cross-sectional view for explaining the water permeability of the floor pavement structure according to an embodiment of the present invention, and FIG. 6B is a perspective view for explaining the water permeability of the floor pavement structure according to an embodiment of the present invention.

6A and 6B, the surface layer 40 of the floor pavement structure according to an embodiment of the present invention may be made of a plurality of permeable blocks 400, and may be transmitted through the permeable block 400 or the permeable block 400. ), rainwater may penetrate into the permeable base block 20 through the gap. In addition, rainwater may penetrate into the synthetic resin structure 200 having a network structure through a hole 250 (FIG. 3) formed in the cover of the synthetic resin structure or through the synthetic resin structure 200 of the water permeable base layer block 20. Since the porous concrete composition 210 is accommodated in the synthetic resin structure 200 having a network structure, the concrete composition 210 provides a storage space for rainwater.

Due to the network structure of the synthetic resin structure 200 and the porous concrete composition 210, the water permeable base layer block 20 serves to purify rainwater. Rainwater penetrating into the permeable base block 20 flows into the ground layer 10 below the permeable base block 20 after a purification action, and may flow into the soil and rivers through the ground layer 10. Therefore, the water circulation function can be secured by the water permeable base layer block 20.

7 is a conceptual diagram illustrating the maintenance performance of a floor pavement structure according to an embodiment of the present invention.

Referring to FIG. 7, the water permeable base layer block 20 may retain rainwater in a storage space provided by the porous concrete composition 210. Thereafter, when it is dried or/or the temperature is high, rainwater held in the permeable base layer block 20 may seep into the upper surface layer 40 and evaporate naturally, resulting in an effect of reducing the temperature of the road surface. I can. In addition, moisture may penetrate into the water permeable base layer block 20 from the underlying ground layer 10, and the moisture that penetrated in this way may also be naturally evaporated by the above-described process. Accordingly, it is possible to secure a water circulation function in a direction opposite to that shown in FIGS. 5A and 5B.

8A is a cross-sectional view of a permeable base layer block according to another embodiment of the present invention, FIG. 8B is a plan view of the water permeable base layer block shown in FIG. 8A, and FIG. 8C is a water permeable base layer according to the embodiment shown in FIGS. 8A and 8B. This is a picture of the block.

8A to 8C, the material accommodated in the water-permeable base block 20 in the water-permeable base block according to the present embodiment includes a layer 211 of soil and/or turf and a Masato 230 under it. . Masato 230 refers to soil formed by weathering granite, and is accommodated in the water permeable base block 20 because the particles are thick and have high water permeability, so that it can function similar to the porous concrete composition of the above-described embodiments. Masato 230 may be used with a porosity of 20% or more, but is not limited thereto.

In one embodiment, a concrete composition (not shown) may be further positioned under the Masato 230 in the voids in the synthetic resin structure 200. At this time, the concrete composition refers to the concrete composition 210 of the above-described embodiment with reference to FIGS. 1 to 7.

In one embodiment, the layer 211 made of soil and/or turf may be poured to a thickness D of about 5 to 15 cm from the surface of the water permeable base block 20, but is not limited thereto.

A permeable cover 212 including one or more openings 213 may be positioned on the layer 211 of soil and/or turf on the surface of the permeable base block 20. If the surface of the water permeable base block 20 is filled with grass without gaps, it may not be easy for moisture to penetrate into the water, so that the water permeable cover 212 covers a part of the surface of the water permeable base block 20 so that the water permeable cover 212 While turf does not exist in the corresponding portion, water may be allowed to penetrate into the permeable base block 20 through the opening 213 of the permeable cover 212.

The permeable cover 212 shown in FIG. 8B has a lattice shape for partitioning the pores of the permeable base layer block 20, but this is exemplary, and the permeable cover 212 may have other different shapes.

In the case of the permeable base layer block according to the embodiment shown in FIGS. 8A to 8C, the planarization layer 30 or the surface layer 40 of the floor pavement structure according to the embodiments shown in FIGS. 1 and 5 to 7 is not required. In addition, only the permeable base layer blocks shown in FIGS. 8A to 8C can function as a floor pavement structure. However, if necessary, it is also possible to use the water permeable base layer block shown in FIGS. 8A to 8C together with one or more other layers such as the planarization layer 30 or the surface layer 40. The permeable base layer block according to the present embodiment includes a layer 211 of soil and/or turf, and is disposed in a turf staircase of a ramp, an area located under sunlight, or an area where rainwater falls to prevent scouring. It can be applied in various forms such as.

In one embodiment, the permeable cover 212 may be formed of a material containing an ultraviolet stabilizer to prevent discoloration when exposed to ultraviolet rays. For example, the permeable cover 212 is a basic material such as polypropylene (PP), benzophenone, benzotriazole, hydroxybenzophenone, and hydroxybenzotriazole. ) May be formed of a material containing about 10% of a UV stabilizer. However, the types of the base material and the ultraviolet stabilizer or the content of the ultraviolet stabilizer are not limited to those described above.

In addition, in another embodiment, not only the permeable cover 212 but also the synthetic resin structure 200 itself may be formed of a material containing an ultraviolet stabilizer as described above.

The present invention described above has been described with reference to the embodiments shown in the drawings, but these are merely exemplary, and those of ordinary skill in the art will understand that various modifications and variations of the embodiments are possible therefrom. However, such a modification should be considered to be within the technical protection scope of the present invention. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

10: lower ground layer 20: permeable base layer block
30: planarization layer 40: surface layer
200: synthetic resin structure 400: permeable block
201: opening 202: support column
203: cover 204: side wall
205: bottom plate 206: fastening groove
210: porous concrete composition 211: soil and/or turf layer
212: permeable cover 213: opening
220: unit structure 230: Masato
250: hole 260: fixed support
265: outer wall support

Claims (12)

A plurality of synthetic resin structures including a plurality of voids and coupled to each other, wherein each of the plurality of synthetic resin structures includes a plurality of unit structures and has a network structure in which the plurality of unit structures are connected to each other, the plurality of synthetic resin structures;
Masato accommodated in the plurality of voids of the synthetic resin structure; And
Including a layer containing soil or turf, which is accommodated in the plurality of voids of the synthetic resin structure and positioned on the Masato,
The synthetic resin structure includes sidewalls defining an outer surface of the synthetic resin structure and including one or more fastening grooves,
The side wall includes one or more fastening grooves, wherein the fastening groove increases in width as it enters the sidewall from the outer surface of the sidewall, and the width of the fastening groove increases from the top to the bottom of the sidewall. Has a decreasing shape,
The fastening groove is formed at a central position of the side wall,
A fixing support inserted into the pair of fastening grooves in contact with each other to couple the plurality of synthetic resin structures to each other; And
Further comprising an outer wall support inserted into the fastening groove in which the fixing support is not inserted,
The fixing support, the permeable base layer block, characterized in that the width of the fixing support increases toward both ends of the fixing support, and the width of the fixing support decreases toward a lower side of the fixing support. delete The method of claim 1,
The synthetic resin structure,
A plurality of support pillars disposed at intervals within the space surrounded by the sidewalls; And
A permeable base layer block, comprising: a cover coupled to an upper portion of the plurality of support pillars and partitioning an upper end of the plurality of unit structures. The method of claim 3,
The synthetic resin structure further comprises a bottom plate defining a bottom surface of the unit structure and having at least one hole formed therein. The method of claim 1,
A water permeable base layer block further comprising a porous concrete composition accommodated in the plurality of voids and located under the Masato, and formed by mixing and then stirring bottom ash, recycled aggregate, cement, fly ash, and water. The method of claim 5,
The porous concrete composition is a water permeable base layer block, characterized in that the compressive strength is 5 MPa or more. The method of claim 5,
A water permeable base layer block, characterized in that the porosity of the porous concrete composition is 30% or more. The method of claim 5,
A water-permeable base layer block, characterized in that the water absorption rate of the porous concrete composition is 20% or more. The method of claim 1,
The water permeable base layer block further comprising a water permeable cover configured to partially cover the upper surface of the layer including the soil or turf, and having one or more openings for moisture to penetrate. The method of claim 9,
The permeable cover is a permeable base layer block, characterized in that formed of a material containing an ultraviolet stabilizer. The method of claim 1,
The layer containing the soil or turf is a permeable base layer block having a height of 5 to 15 cm. The method of claim 1,
The permeable base layer block of the Masato porosity is 20% or more.

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