JP4541337B2 - Parking floor structure - Google Patents

Description

  The present invention relates to a parking lot floor structure.

  Most of the parking lot floors on the outdoors and on the roof are made of concrete or asphalt and are one of the main sources of the heat island phenomenon.

  Plants such as turf can be vegetated on the upper surface of this floor to alleviate the heat island phenomenon, but even if the plant is vegetated with the floor of the parking lot as a soil layer, the plant will not be It was crushed and not nurtured and did not function as a countermeasure.

  In addition, it is also disclosed that blocks are laid on the ground with a space between them, soil is put in the space (joint), and turf is vegetated on the soil (see, for example, Patent Document 1). The block moves and is unstable by entering and exiting. Further, a force is applied to the block by rotation about the vertical direction of the tire by a handle operation (ground cutting handle operation) when the vehicle is stopped, and the block rotates in the horizontal plane by the force and easily moves by pushing the soil at the joint. Further, in such an aspect, it is disclosed that a spacer that keeps the joint interval is used (see, for example, Patent Document 2). However, a phenomenon in which a block or a spacer moves when a vehicle frequently enters and exits for a long time. Inevitably, the rotation of the block and the spacer due to the rotation of the tire by this steering wheel operation is unavoidable.

  On the other hand, the floor on which plants are vegetated needs water retention as well as water permeability. For this reason, it is disclosed that an artificial water pool is provided in the lower part of the pavement block (see, for example, Patent Document 3). However, such a block does not hold soil for vegetation and is not suitable for growing plants. It is.

In addition, the pavement having a water retention function includes a water retention injection material having a porosity of 10 to 40% and a maximum water absorption rate of 30 to 80% in the void portion. The composition of the water retention injection material However, what is the kneaded material which consists of 100 mass parts of cementitious binders, 5-60 mass parts of water retention materials, and 60-200 mass parts of water is disclosed (for example, refer patent document 4). However, this pavement also does not retain vegetation soil and is unsuitable for plant growth.
JP 2006-45843 A JP 2006-9480 A JP-A-8-85907 JP 2005-48403 A

  An object of the present invention is to provide a parking lot floor structure in which plants of shrubs such as shiba vegetated on a floor surface are cultivated by withstanding frequent car entry and exit.

  The gist of the present invention includes a water permeable layer and a block layer laminated on the upper surface of the water permeable layer, and the block layer includes a block made of a molded body in which through holes penetrating vertically are formed. It is a parking lot floor structure in which a group of blocks are spread and filled with soil that will plant vegetation in the through hole.

  Further, the gist of the present invention includes a water permeable layer and a block layer laminated on the upper surface of the water permeable layer, and the block layer includes a block made of a molded body in which vertical grooves are formed. A group of blocks was laid, and the soil surrounded by the inner wall surface of the groove of the molded body and the outer wall surface of the block adjacent to the molded body was filled with a soil for plant growth. It is in the parking lot floor structure.

  The molded body may be a combination of a plurality of element substrates.

  In the parking lot floor structure, an aggregate containing 50% by weight or more of pulverized concrete may be bonded with cement.

  The aggregate may include 5 to 50 parts by weight of a sludge solidified material with respect to 100 parts by weight of the concrete ground material, and the sludge solidified material is a construction sludge added with a solidifying agent and an admixture. It can be crushed after being cured.

In the parking lot floor structure, the soil is one or more soils selected from masa soil and mackerel soil.
Perlite 15-40% by volume
Compostable fertilizer 25-45% by volume
10-25% by volume of one or more soils selected from borado and kanuma soil
Culturing soil-1 comprising
One or more types of soil selected from Masa soil and mackerel soil 25-40% by volume
Perlite 30-45% by volume
Compostable fertilizer 25-45% by volume
Culturing soil-2 comprising,
Basic culture selected from
0.5 to 30 kg of fertilizer can be included for 1000 liters of the basic soil,
The compostable fertilizer can be selected from bark compost obtained from the bark of conifers, a mixture of compost obtained from the leaves of a tree and a ceramic / charcoal composite obtained by firing a particulate tree with clay and firing,
The fertilizer may be selected from chemical fertilizers and natural product-derived fertilizers.

Furthermore, in the parking lot floor structure, the soil is
30-50% by volume of one or more types of soil selected from Masa soil and mackerel soil
Perlite 10-20% by volume
Compost 30-40% by volume obtained from leaves of trees
1-5% by volume of ceramic and charcoal composites fired by sprinkling clay on particulate wood
Charcoal powder 5-10% by volume
Slow-acting organic fertilizer 0.1-1% by volume
Can be included.

  The water permeable layer may include a sandy layer.

  In the parking lot floor structure, a layer mainly composed of aggregates of stone blocks can be laid on the lower side of the water permeable layer, and the blocks can be obtained by mixing construction sludge with a solidifying agent and an admixture. It may contain sludge solidified material that has been hardened and then crushed.

  In the parking lot floor structure, water supply means for supplying water to the cultivation soil may be provided below the block layer.

  ADVANTAGE OF THE INVENTION According to this invention, the parking lot floor structure by which plants of shrub grasses, such as a buckwheat vegetated on the floor surface, are endured and brought up with frequent vehicles coming and going is provided.

  Embodiments of the present invention will be described. FIG. 1 shows the shape of the molded body 4 used in the parking lot floor structure of the present invention. The molded body 4 is a block whose outer shape is a cube or a rectangular parallelepiped, and has a through hole 8 penetrating vertically. The cross-sectional shape and the number of the through-holes 8 are not particularly limited, but as shown in FIG. 1, the formed body 4 is formed so as to look like the shape of a top view. In order to increase the total sum of the opening areas of the through-holes 8 and increase the strength of the side wall 10 and the inner wall 12 of the molded body 4, it is also preferable from the viewpoint of aesthetics after laying.

  FIG. 2 shows a parking lot floor structure 2 in which a molded body 4 is laid. The parking lot floor structure 2 includes a water permeable layer 16 and a block layer 6 laminated on the upper surface of the water permeable layer 16. The block layer 6 is formed by spreading a block group including a block made of the molded body 4. In the molded body 4, the adjacent molded bodies 4 are substantially in contact with each other on the upper surface of the water-permeable layer 16 and are spread in a lattice shape, and the through-hole 8 is filled with the soil 18 for planting 20. Has been.

  The material of the water permeable layer 16 is not particularly limited as long as it has water permeability and the water permeable layer 16 supports the molded body 4. However, the material is a plate, a fiber assembly, and a sand, sand-like material, or porous resin. A body sheet etc. are illustrated. Further, it is more preferable to have water retention. The thickness of the water permeable layer 16 is preferably 10 to 50 mm. More preferably, it is 20-30 mm.

  As the water permeable layer 16, it is most preferable to use a sludge-solidified product laid in layers to improve the water retention and water permeability of the parking lot floor structure. The pulverized sludge solidified product may be used by mixing with sand.

  Furthermore, in the parking lot floor structure of the present invention, the layer 40 of the block of stones 42 is provided below the permeable layer 16 as shown in FIG. It is further preferable for improving water permeability. The stone block 42 may be natural stone such as river gravel, but is preferably crushed stone. The diameter of the stone block 42 is preferably 10 to 60 mm. The stone block 42 is most preferably a crushed stone obtained by pulverizing the sludge solidified body in order to improve water retention and water permeability. As such a block of stone 42, for example, Daiko Kogyo Co., Ltd. trade name; Polynite; C-20 (particle size: 20 mm under), C-30 (particle size: 30 mm under), etc. are preferably used. The thickness of the layer 40 of the stone block is preferably 80 to 100 mm. The stone block 42 may be a mixture of river gravel or crushed stone and crushed stone obtained by pulverizing the sludge solidified body.

  In an example of the other aspect of the present invention, as shown in FIG. 3, the molded body 4 may be laid together with the solid block 22.

  Moreover, in the parking lot floor structure 2a according to still another aspect of the present invention, as shown in FIG. 4, the molded body may be a molded body 4a in which the vertical grooves 30 are formed. In this case, when the blocks made of the molded body 4a are spread in contact with each other, the inner wall surface 32 of the groove 30 of the molded body 4a and the outer wall surface 34 of the block made of the molded body 4a adjacent to the molded body 4a. The enclosed hole space 36 is filled with a soil for plant growth.

  On the upper surface of the molded body used in the present invention, as shown in FIG. 5, the shallow groove 13 extends between the upper edge 11 of the through hole 8 (or the hole space 36) and the outer peripheral upper edge 9 of the molded body (4). An embodiment in which is formed is preferred. The shallow groove 13 is preferably formed also between the upper edges 11 of the adjacent through holes 8 (or hole spaces 36). The shallow groove 13 serves as a water conduit and improves drainage of the surface of the soil filled in the through hole 8 (or the hole space 36).

  The outer peripheral surface may have irregularities 47 as in the molded body 4b used for the parking lot floor structure 2b shown in FIG. With regard to the molded bodies adjacent to each other, the laid structure is stabilized by causing the molded bodies to come into surface contact with the concave portions of one molded body so that the convex portions of the other molded body adjacent to the molded body are bitten. The effect of preventing the movement of the block by the tire is further enhanced even when the steering wheel is ground.

  In still another embodiment of the present invention, as shown in FIG. 7, the molded body 4c is a combination of a plurality of element substrates (for example, element substrate 5a, element substrate 5b, element substrate 5c). May be.

  When the molded body is formed by combining a plurality of element substrates, the plurality of element substrates may include ones having different shapes or the same shape.

  In these configurations of the parking lot floor structure of the present invention, the molded body is laid on the floor surface so that the adjacent molded bodies are arranged without gaps, so that a vehicle is frequently placed on the laid surface. The block hardly moves in the horizontal direction even when going to the station. In addition, even when a force caused by rotation about the vertical direction of the tire by the steering wheel operation when stopping is applied to the molded body that supports the tire, the molded body rotates and moves in a horizontal plane with the force. Absent.

  The size of the opening of the through-hole 8 or the hole space 36 must be smaller than the size that fits inside the area surrounded by the periphery of the opening. Preferably, it is 5 to 15 cm on both sides of the heel. If the size of this opening is smaller than this range, it is insufficient for the purpose of greening. If the size of this opening is larger than this range, the load applied to the tire by the plant vegetated on the soil 18 when parked The plant will be almost received, and the plant will be crushed by the tires, making it difficult to grow. Moreover, in order to avoid the point that plants are difficult to grow by being crushed by a tire, the shape of this opening is 15 cm or less in width, and the width in the direction perpendicular to the width direction (the other width) is one of the widths. A band shape larger than the width may be used. In this case, one of the widths is preferably 5 cm or more for the purpose of greening. In this case, however, the other width is preferably 100 cm or less. If the width of the other side exceeds this range, the size of the molded body increases, making it difficult to perform manufacturing and construction operations. Further, the wall of the molded body becomes long and the molded body is easily broken by the bending force.

  The molded body (molded body 4, molded body 4a, molded body 4b, molded body 4c, etc.) is made of a material having water retention properties, which has an effect of continuous water supply to the culture soil 18; preferable. In particular, the soil 18 is continuously replenished with a molded body in which aggregates containing 50% by weight or more of recycled sand, which is a pulverized concrete obtained by crushing and pulverizing concrete, are combined with cement. It is preferable when ensuring the effect of this and the intensity | strength of a molded object.

  Recycled sand contains approximately 20% by weight of a hardened mortar component, and this mortar component contains bubbles, which makes the particles of regenerated sand porous. A molded body formed by binding a cement with cement is excellent in water retention and is preferably used in the present invention.

  The particle size of the reclaimed sand is preferably 5 mm under the sieve opening. In the production of reclaimed sand, it is preferable to wash the concrete pulverized product with water before forming to remove the alkali component in the pulverized product.

  In the production of the molded body, it is possible to increase the water retention of the molded body to the culture soil 18 by adding 5 to 50 parts by weight of the sludge solidified body to 100 parts by weight of recycled sand as an aggregate. It is further preferable for continuous hydration. This sludge solidified body is obtained by pulverizing construction sludge after adding and mixing a solidifying agent and an admixture. Construction sludge is waste bentonite mud, waste mud produced by the mud shield method, etc., high moisture content excavated in subway construction, etc., and mud excavated soil with fine particles.

  If the added amount of the sludge solidified product is smaller than this range, the effect of further increasing the water retention of the molded product is hardly obtained. When the added amount of the sludge solidified product exceeds this range, the strength of the molded product becomes insufficient as a laid product laid on the paved surface in the parking lot floor structure of the present invention.

  This sludge solidified body is a mixed soil obtained by mixing dehydrated construction sludge with a cement-based solidifying agent, a dispersant composed of a water-soluble polymer or oil-based emulsion polymer agent, an admixture such as a binder, This mixed soil is obtained by removing excess water and degassing under pressure to form a lump, and crushing the lump after curing, for example, produced by the method described in Japanese Patent No. 001813 can do.

In the present invention, it is preferable that the soil 18 filled in the through holes 8 or the hole spaces 36 is also excellent in water permeability and water retention.
As this culture,
One or more types of soil selected from Masa soil and mackerel soil 25-40% by volume
Perlite 15-40% by volume
Compostable fertilizer 25-45% by volume
10-25% by volume of one or more soils selected from borado and kanuma soil
Culturing soil-1 comprising
One or more types of soil selected from Masa soil and mackerel soil 25-40% by volume
Perlite 30-45% by volume
Compostable fertilizer 25-45% by volume
Culturing soil-2 comprising,
Basic culture selected from
The main soil consists of 0.5 to 30 kg fertilizer for 1000 liters of this basic soil.
This compostable fertilizer is selected from bark compost obtained from the bark of conifers, a mixture of compost obtained from the leaves of the tree and ceramic and charcoal composites obtained by sprinkling clay on particulate trees,
It is preferable that the fertilizer is selected from chemical fertilizers and natural product-derived fertilizers in combination with water permeability and water retention, and for the growth of plants vegetated on the soil 18.

Furthermore, as the culture soil 18 used in the present invention,
30-50% by volume of one or more types of soil selected from Masa soil and mackerel soil
Perlite 10-20% by volume
Compost 30-40% by volume obtained from leaves of trees
1-5% by volume of ceramic and charcoal composites fired by sprinkling clay on particulate wood
Charcoal powder 5-10% by volume
Slow-acting organic fertilizer 0.1-1% by volume
It is most preferable to have a soil composed of the following material as a main component in terms of rooting and growing of the plant vegetated on the soil 18.
The slow-acting organic fertilizer is a fertilizer in which particles of an organic matter-derived fertilizer such as magcalin (trade name) are coated with a resin coating that is decomposed or dissolved by a substance in the soil.

  In addition, the soil having such a composition has a small specific gravity of 0.7 to 1.3, can reduce the weight of the parking floor structure, and the parking floor structure of the present invention is installed on the roof of a building. In this case, it is particularly preferable to use a culture medium having such a composition.

  As a natural product-derived fertilizer, there are a plurality of types selected from those containing natural products such as oysters, mineral components, organic potash, zeolite, fish meal, shell fossils, and those containing organic fertilizer components. It is preferable that they are blended.

  In the parking lot floor structure of the present invention, the plant of shrub grass planted on the cultivation soil 18 is not particularly limited, but for example, Tamariu, Shiba, Korai Shiba, Noshiba, improved Noshiba and the like are preferably used.

  Moreover, in the parking lot floor structure of this invention, it exists in the tendency for the plant of the area | region which hits directly under the engine at the time of parking to wither with the heat from an engine. As countermeasures, it is effective to supply water frequently to the soil in the area and prevent the temperature of the soil and plant in the area from rising due to the water cooling effect of the water and the cooling effect of the water evaporation. . For this purpose, it is preferable that water supply means for supplying water to the soil is provided below the block layer. By providing the water supply means on the lower side of the block layer, it is possible to efficiently maintain the molded body used in the present invention constituting the block layer in a constantly water-retaining state, and it is possible to reliably prevent the plant from withering.

  FIG. 8 shows an example of this water supply means. In FIG. 8, a irrigation pipe 60 extending in the horizontal direction is embedded in the water permeable layer 16 of the parking lot floor structure 2. The irrigation pipe 60 is preferably a resin or metal pipe, and a hole 62 for discharging water as shown in FIG. Or as shown in FIG.9 (b), it is preferable to attach the flow control valve 63 which makes the discharge flow volume from the hole 62 constant irrespective of the original pressure, as shown in FIG.9 (b). The holes 62 are provided at predetermined intervals along the longitudinal direction of the irrigation pipe 60. As the irrigation pipe 60, for example, Sumika Agricultural Materials Co., Ltd .: trade name Sumiram is preferably used.

FIG. 10 shows how the irrigation pipe 60 is laid. The irrigation pipe 60 is laid in the parking area 64 of each vehicle so as to extend in the front-rear direction of the parked car at a central position in the width direction of the parked car 65. Reference numeral 67 denotes a boundary of the parking area 64 for each vehicle.
The area corresponding to the upper part of the irrigation pipe 60 of the block layer 6 is an area where the temperature rises during parking due to heat from the engine. The irrigation pipes 60 arranged for each parking area 64 are connected to the main water supply pipe 66 so as to branch from the common main water supply pipe 66.

  FIG. 11 shows a water flow path for passing water from the pressure water source 70 to the irrigation pipe 60 via the on-off valve 72 and the main water supply pipe 66. Opening and closing of the on-off valve 72 installed in the main water supply pipe 66 is controlled by a valve control circuit device 74 incorporating a timer, and is controlled to be in an open state at a predetermined time zone. In the modes shown in FIGS. 8 to 11, the water supply means 80 is constituted by the irrigation pipe 60, the main water supply pipe 66, the pressure water source 70, the on-off valve 72, and the valve control circuit 74. Water may be supplied to the main water supply pipe 66 from a water supply pump.

A parking lot floor structure having the structure shown in FIG. 2 was produced for each case shown in Table 1 in which the types of materials of the molded body, the soil, the water permeable layer, and the stone block were changed and installed in the outdoor parking lot of the store.

Molded body The one shown in FIG. 1 was used. The dimensions (cm) of the molded body are a = 10, b1 = b2 = 35, c = 5, d1 = d2 = 10.

A: Made of 70% by weight of concrete gravel (C-25), 29% by weight of cement component and 1% by weight of admixture (bending strength 4.7MPa, water absorption 2.0%)
B: A molded body obtained by solidifying a solid precursor composed of 95 parts by weight of recycled sand (particle size: 5 mm under), 25 parts by weight of cement, 20 parts by weight of crushed stone, 10 parts by weight of water, and 1 part by weight of an admixture. (Bending strength: 4.5 MPa, water absorption: 10.3%)
C: Recycled sand (particle size: 6 mm under) 50 parts by weight, crushed stone-like material obtained by pulverizing sludge solidified (trade name: Polynite; C-6 (particle size: 6 mm under) manufactured by Daiko Kogyo Co., Ltd.) 20 parts by weight A molded product obtained by solidifying a solid part precursor composed of 1 part by weight of cement, 1 part by weight of admixture and 30% by weight of water with respect to the cement. (Bending strength: 4.0 MPa, water absorption: 26.7%)

Culture 1: Mountain sand 2: Masa soil 30% by volume
Perlite 20% by volume
30% by volume of bark compost from conifer bark
Weat Earth 20%
Mixing chemical fertilizer in a mixing ratio of 3 kg to 1000 liters of basic soil consisting of 3: 20% by volume of masa soil, 20% by volume of mackerel
Perlite 25% by volume
A mixture of compost obtained from the leaves of a tree and a ceramic / charcoal composite that has been baked by applying clay to a particulate tree in a volume ratio of 1: 1 25% by volume
10% by volume of crushed stone obtained by crushing solidified sludge (trade name; Polynite; C-6, manufactured by Daiko Kogyo Co., Ltd.)
A natural product-derived fertilizer mixed in a mixing ratio of 5 kg per 1000 liters of basic soil.
(Composition of natural product-derived fertilizer (% by weight); oysters: 50%, mineral content (product name: longevity) 5%, organic potassium pellets 5%, zeolite 15%, fish cake (product name: veteran), 5%, (Landpack 5%, Guano 5%, Shell fossil 10%)
4). Masa soil 40%
Perlite 15% by volume
35% by volume of compost obtained from leaves of trees
Ceramic / charcoal composite 3%
Charcoal powder 6.7% by volume
Slow-acting organic fertilizer (trade name Magcarin) 0.3% by volume

Water permeable layer (thickness 20mm)
I. Mountain sand b. 50% by weight of mountain sand, 50% by weight of a crushed stone product obtained by pulverizing sludge solidified (trade name; Polynite; C-6, manufactured by Daiko Kogyo Co., Ltd.)
C, Crushed stones obtained by crushing sludge solidified (trade name; Polynite; C-20, manufactured by Daiko Kogyo Co., Ltd.)

Stone block (thickness 80mm)
a. : Crushed stone (C-40)
b. : Crushed stone obtained by crushing sludge solidified product (trade name; Polynite; C-20, manufactured by Daiko Kogyo Co., Ltd.)

For each case shown in Table 1 and Reference Example 1 , Tamariu was vegetated on the cultivated soil, and the growth situation for half a year was observed. At the time of training, watering was performed every week. Table 1 shows the development status of Tamariu.

  In addition, the present invention can be carried out in a mode in which various improvements, modifications, and changes are added based on the knowledge of those skilled in the art without departing from the spirit of the present invention.

It is a perspective view which shows an example of the shape of the molded object used for the parking lot floor structure of this invention. FIG. 2 (a) is a top view, FIG. 2 (b) is a schematic cross-sectional view, and FIG. 2 (c) is a schematic cross-sectional view of an aspect different from FIG. 2 (b). It is. It is a top view which shows an example of the other aspect of the parking lot floor structure of this invention. It is a top view which shows an example of the further another aspect of the parking lot floor structure of this invention. It is a perspective view which shows another example of the shape of the molded object used for the parking lot floor structure of this invention. It is a top view which shows another example of the other aspect of the parking lot floor structure of this invention. It is a top view which shows another example of the shape of the molded object used for the parking lot floor structure of this invention. It is a cross-sectional schematic diagram which shows the installation state of the pipe for irrigation in the water supply means used for the parking lot floor structure of this invention. It is sectional drawing of the pipe for irrigation. It is an upper surface schematic diagram which shows the aspect of laying the pipe for irrigation. It is explanatory drawing which shows the water flow path in the water supply means used for the parking lot floor structure of this invention.

Explanation of symbols

2, 2a, 2b: Parking lot floor structure 4, 4a, 4b, 4c: Molded bodies 5a, 5b, 5c: Element base 8: Through hole 14: Base 16: Water-permeable layer 18: Culture soil 20: Plant 30: Groove 36: Hole space 40: Stone block layer 42: Stone block 80: Water supply means

Claims (4)

A block group including a water permeable layer and a block layer laminated on the upper surface of the water permeable layer, the block layer including a block made of a molded body in which a through-hole penetrating vertically is formed, It is a parking lot floor structure where the through-hole is filled with culture soil where plants will be vegetated, and the vegetated plants receive heat from the engine in the area where the plant hits directly under the engine at the time of parking,
The plant is tamariu,
An aggregate containing 50% by weight or more of recycled sand, which is a pulverized concrete obtained by crushing and pulverizing concrete, is formed by cementing the aggregate with cement.
A layer mainly composed of aggregates of stone blocks is laid on the lower side of the water-permeable layer, and the stone blocks were crushed after the construction sludge was hardened by adding a solidifying agent and an admixture. Comprising sludge solidified body,
The water permeable layer comprises a crushed stone-like material obtained by crushing sludge solidified body,
30-50% by volume of one or more soils selected from masa soil and mackerel soil
Perlite 10-20% by volume
Compost 30-40% by volume obtained from leaves of trees
1-5% by volume of ceramic and charcoal composites fired by sprinkling clay on particulate wood
Charcoal powder 5-10% by volume
Slow-acting organic fertilizer 0.1-1% by volume
Parking lot floor structure comprising. A block group including a water permeable layer and a block layer laminated on an upper surface of the water permeable layer, the block layer including blocks formed of a molded body in which vertical grooves are formed; A region in which a plant soil is to be planted in a space surrounded by an inner wall surface of the groove and an outer wall surface of a block adjacent to the molded body, and the planted plant hits directly under the engine at the time of parking It is a parking lot floor structure that receives heat from the engine at
The plant is tamariu,
An aggregate containing 50% by weight or more of recycled sand, which is a pulverized concrete obtained by crushing and pulverizing concrete, is formed by cementing the aggregate with cement.
A layer mainly composed of aggregates of stone blocks is laid on the lower side of the water permeable layer, and the stone blocks were crushed after the construction sludge was hardened by adding a solidifying agent and an admixture. Comprising sludge solidified body,
The water permeable layer comprises a crushed stone-like material obtained by crushing sludge solidified body,
30-50% by volume of one or more soils selected from masa soil and mackerel soil
Perlite 10-20% by volume
Compost 30-40% by volume obtained from leaves of trees
1-5% by volume of ceramic and charcoal composites fired by sprinkling clay on particulate wood
Charcoal powder 5-10% by volume
Slow-acting organic fertilizer 0.1-1% by volume
Parking lot floor structure comprising. The parking lot floor structure according to claim 1 or 2 , wherein the molded body is a combination of a plurality of element bases. The parking lot floor structure according to any one of claims 1 to 3 , wherein water supply means for supplying water to the cultivation soil is provided below the block layer.

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