JPH108410A - Concrete or brick block - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a concrete block in which temperature lowering of the block surface can be kept over a long period of time. SOLUTION: As the whole surface of a block except the upper surface side of a block main body 30 having high permeability is covered with a storing case 40 formed out of a film with a coefficient of water permeability of 10<-3> cm/ sec or less, rainwater permeates the inside from the upper surface side of the block main body 30 stored in the storing case 40 to be held, whereby for shining hours, the held water is gradually evaporated, and the temperature of the surface of the block main body 30 is lowered by the heat of vaporization. Accordingly, the rainwater which has permeated from the upper surface side of the block main body 30 can be held enough in the interior of the block main body 30, so that lowering of temperature of the block main body 30 surface can be kept over a long period of time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block in which a block body having high permeability to rainwater or the like is stored in a storage container made of a water-impermeable membrane.

[0002]

2. Description of the Related Art For example, one of the causes of a high temperature in an urban area is an increase in heat accumulation due to an increase in dry portions covered with concrete, asphalt and the like.

On the other hand, when the surface of the ground is covered with concrete, asphalt, etc., rainwater or the like directly flows into rivers, drainage channels, etc., and suffers disasters. In order to avoid such disasters, there is also a means to avoid such disasters.

However, even when the ground surface is covered with such a permeable pavement or a permeable block,
As in the case of conventional concrete and asphalt, when heated by solar radiation, the surface temperature rises to 50-60 ° C in summer and heat accumulation reaches 30-40 ° C even at night, so the temperature reduction has not been eliminated. This is the actual situation.

Incidentally, in order to solve such a problem, for example, Japanese Patent Laid-Open Publication No. Hei 3-63301 discloses that water such as rainwater is absorbed by a water retaining part and excess water not absorbed by the water retaining part is removed by a water transmitting part. Disclosed is a surface laying block that penetrates and penetrates the formation.

Further, Japanese Patent Application Laid-Open No. 4-80401 discloses that
A large number of through-holes for water permeation that penetrates the surface water to the lower layer, and a number of non-penetrating water retention holes that hold surface water inside, and the block itself and the water retention holes absorb water such as rainwater to retain water. A surface laying block adapted to maintain a condition is disclosed.

[0007]

However, in the former prior art described above, although water such as rainwater can be absorbed by the water retaining section, evaporation of the retained water, such as when cloudy, occurs. When there is no rainfall and the water is not absorbed in the water retaining part, part of the water absorbed in the water retaining part penetrates through the water permeable part and penetrates into the stratum. In addition, there is a problem that it is impossible to maintain the temperature of the block surface for a long time.

On the other hand, in the latter prior art, although the temperature of the block surface can be reduced by accumulating water on the surface in the non-penetrating water retaining hole, the water retaining hole is taken into consideration in view of the durability and aesthetics of the block. The number and dimensions of the blocks are limited, and the water retention capacity of the water is extremely reduced. Therefore, as described above, it is impossible to maintain the temperature of the block surface for a long time. There is.

The present invention has been made in view of such circumstances, and has as its object to provide a concrete block capable of maintaining the temperature of the block surface for a long period of time.

[0010]

According to the first aspect of the present invention,
The block body having a high porosity is stored in a storage container made of a water-impermeable membrane having an open upper surface, and rainwater that has permeated from the upper surface of the block body is retained in the block body inside the storage container. And after the rain,
The rainwater retained in the block body is gradually evaporated.

According to the first aspect of the present invention, all surfaces except for the upper surface of the block body having a high porosity are covered by the storage container made of the water-impermeable membrane, so that rainwater is stored in the storage container. After the rainfall, the retained water gradually evaporates, and the heat of vaporization lowers the temperature of the block body surface.

Therefore, the rainwater permeated from the upper surface side of the block main body is sufficiently retained inside the block main body without permeating to the outside, and the temperature of the surface of the block main body is maintained for a long time.

According to a second aspect of the present invention, the upper surface of the block main body closes an opening of the storage container and is formed of a block upper plate made of permeable pavement concrete having a higher density than the block main body. It is characterized by being covered.

According to the second aspect of the present invention, since the upper surface of the block main body is covered with the block upper plate made of densely permeable concrete for permeable pavement, the concrete block may be laid on a sidewalk or a road. However, wear due to friction is suppressed and durability is improved.

The invention according to claim 3 is characterized in that a plurality of grooves are formed on the upper surface side of the block upper plate.

According to the third aspect of the present invention, a plurality of grooves formed on the upper surface side of the block upper plate can form a water pool, and the efficiency of water penetration into the block main body can be enhanced.

The invention according to claim 4 is characterized in that the storage container made of the water-impermeable membrane is formed of a plastic film, a plastic plate, and a water-impermeable concrete layer.

According to the fourth aspect of the present invention, since the storage container made of the water-impermeable membrane is formed by the plastic film, the plastic plate, and the water-impermeable concrete layer, the outside of the water held inside the block main body is formed. Permeation of the block body is prevented, and the retention rate of water inside the block body is increased.

The invention according to claim 5 is characterized in that the storage container made of the water-impermeable membrane has a laminate structure in which a resin film is sandwiched between nonwoven fabrics.

According to the fifth aspect of the present invention, the durability of the water-impermeable membrane is enhanced by the abrasion resistance of the nonwoven fabric.

According to a sixth aspect of the present invention, the block body has a structure in which an aggregate made of a porous gravel material is solidified by cement, and the pores are configured to be 20 to 90%. It is characterized by being.

According to the sixth aspect of the present invention, the pores are 20 to 9
Since it is configured to be 0%, the water retention capacity of the block main body is sufficient, and the temperature reduction of the surface of the block main body is maintained for a long time.

According to a seventh aspect of the present invention, a small space partitioned by a plurality of partition walls is provided inside the storage container, and the inside of these small spaces is made of the porous gravel material. It is characterized by being filled with aggregate.

[0024] In the invention according to claim 7, the space formed inside the block body divided by the partition wall is filled with the aggregate made of the porous gravel material, so that in addition to the porosity of the aggregate itself, Due to the formation of the gaps between the aggregates, more water is retained inside the block body.

[0025] The invention according to claim 8 is characterized in that a material that gradually dissolves a sterilizing and algicidal substance is mixed into the aggregate.

[0026] In the invention according to claim 8, sterilization is performed in the aggregate.
By mixing a material that gradually elutes algicidal substances, for example, copper or silver ions, the generation of bacteria or algae is suppressed, so that the permeability and appearance of rainwater can be maintained for a long period of time.

According to a ninth aspect of the present invention, a temperature-sensitive high water-absorbing resin is mixed in the block main body.

According to the ninth aspect of the present invention, since the temperature-sensitive superabsorbent resin mixed into the block body is a water-absorbing polymer whose water-absorbing property changes critically depending on the temperature condition, the water permeated into the block body can be reduced. Part of the temperature-sensitive superabsorbent resin will also be retained, and water will be adsorbed or dehydrated by the temperature-sensitive superabsorbent resin as needed. Can be performed efficiently.

According to a tenth aspect of the present invention, a waterproof film is applied to the remaining surface of the block body other than the upper surface side of the highly permeable block body. In the blocked state, rainwater that has permeated from the upper surface side of the block main body is retained inside the block main body.

According to the tenth aspect of the present invention, similarly to the above, the coating film waterproofing agent is applied to the side surface and the bottom surface other than the top surface side of the block main body, so that the water outside the water held inside the block main body is also formed. Permeation of the block body is prevented, and the retention rate of water inside the block body is increased.

[0031]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 3 show an embodiment of a concrete block according to the present invention.

The concrete block 10 shown in FIG.
A block main body 30 having water permeability is accommodated in the storage container 40 having an upper surface opening made of a water-impermeable membrane, and the upper surface side has the same water permeability and closes the upper surface opening side of the storage container 40. Block upper plate 20 is laminated. Thereby, the block body 30
Since the side surface and the bottom surface other than the top surface side of the block are covered by the storage container 40 formed of the water-impermeable membrane, the rainwater and the like that has permeated into the block main body 30 through the block upper plate 20 are removed by the storage container 40. Water permeation to the outside is prevented, and the water is held inside the block body 30.

The block upper plate 20 has a depth of 0.1 mm.
A groove 21 having a width of about 5 cm and a width of about 1 cm is formed, and rainwater and the like are temporarily stored in the groove 21, so that the permeability of rainwater and the like from the block upper plate 20 to the block body 30 is promoted. I have.

Further, the block main body 30 has a structure in which an aggregate 31 made of a porous gravel material such as pumice or pearlite, porous ceramic, porous plastic or the like is solidified by cement, and the pores have a pore size of 20. It is set to be 90%.

Further, the water-impermeable membrane constituting the storage container 40 is constituted by a plastic film, a plastic plate or the like.

In the case of the water-impermeable membrane constituting such a storage container 40, these plastic films,
It is not limited to plastic boards, etc.
The above-described corresponding portion of the block body 30 may be an impermeable concrete layer. By applying these coating film waterproofing agents or by making it impermeable concrete layer,
Even when the storage container 40 is not provided, the storage container 40
In the same manner as in the case where the water is provided, it is possible to prevent the permeation of rainwater and the like held in the block body 30 to the outside.

Concrete block 1 having such a structure
0 is manufactured as follows. That is, 1.2 kg of cement is mixed with 4.5 liters of pearlite having a dry bulk specific gravity of 0.25 to form a flat block body 30 having a thickness of 5 cm and a length and width of 30 cm.

Next, the block main body 30 is incorporated into the above-mentioned storage container 40, and the upper surface of the block upper plate 20 is formed on the upper surface side thereof and is provided with a groove 21 having a depth of about 0.5 cm and a width of about 1 cm. Was laminated with cement.

The dry weight of the concrete block 10 thus manufactured was 3.52 kg. The weight of the concrete block 10 when sufficiently penetrated with water was 7.12 kg. Therefore, the weight of the water held in the concrete block 10 is 3.6 kg.

Next, the operation of the concrete block 10 thus manufactured will be described with reference to FIG.

FIG. 3 shows a comparison between a conventional concrete block and the concrete block according to the present embodiment, in which dimensions and the like are substantially the same.
In addition, under the measurement conditions, a state where both of them have sufficient water (in the case of the present embodiment, 3.6 k as described above)
g of water is held), and left outdoors for about 19 days in the summer and measured under the same conditions.

However, during the measurement period, rainwater and the like are not applied to both, and the sunshine time is set to the same condition for both. The measurement date was every other day, and the measurement time was one afternoon.

As can be seen from the results measured under these conditions, the surface temperatures of the two were 19 to 6
It can be seen that there is a difference in the range of ° C.

As described above, in this embodiment, all surfaces except the upper surface side of the highly permeable block body 30 are covered by the storage container 40 made of the water-impermeable membrane. 40 will be penetrated and held inside from the upper surface side of the block main body 30 housed in 40, and during sunshine, the held water will gradually evaporate,
The temperature of the surface of the block upper plate 20 is reduced by the heat of vaporization.

Therefore, the rainwater permeated from the upper surface side of the block main body 30 is sufficiently retained inside the block main body 30 without permeating to the outside, and the temperature of the surface of the block main body 30 is maintained for a long time. .

Further, in this embodiment, since the upper surface of the block body 30 is covered by the block upper plate 20 made of densely permeable pavement concrete, when the concrete block is laid on the sidewalk or the roadway, Even in this case, wear due to friction is suppressed, and durability is improved.

Further, in this embodiment, a pool of water can be formed by the plurality of grooves 21 formed on the upper surface side of the block upper plate 20, and the efficiency of water penetration into the block main body 30 can be increased. Can be

Furthermore, in this embodiment, since the storage container 40 made of a water-impermeable membrane is formed of a plastic film, a plastic plate, and a water-impermeable concrete layer, it is held inside the block main body 30. The permeation of water to the outside is prevented, and the water retention rate inside the block main body 30 is increased.

In this embodiment, the block main body 30 has a structure in which an aggregate 31 made of a porous gravelly material is solidified by cement, and is configured so that the pores are 80%. Therefore, the water retention capacity of the block main body 30 becomes sufficient, and the temperature of the surface of the block upper plate 20 is maintained for a long time. The block body 3
In manufacturing 0, the strength of the concrete block 10 itself can be increased by forming the bottom side of the block body 30 with a dense concrete layer.

FIG. 5 shows the concrete block 10 of FIG.
This shows another embodiment in which the configuration is changed.

That is, as shown in the figure, the inside of the storage container 40 made of a water-impermeable membrane is formed in a honeycomb shape by partition walls 32, and the inside of the space formed by these partition walls 32 is Is filled with an aggregate 31 made of a porous gravel material such as pumice or pearlite, porous ceramic, porous plastic or the like. However, in this case, the solidification by the cement described above is not performed,
It is simply filled.

In this case, since the inside of the block body 30 is formed in a honeycomb shape by the partition wall 32,
The strength is maintained sufficiently. Also, the retained water is transferred to the block upper plate 2 by the capillary force of the porous material.
When 0 is dry, it is fed upwards.

Therefore, in this embodiment, the space inside the block main body 30 partitioned by the partition wall 32 is filled with the aggregate 31 made of porous gravel material. In addition to the properties, a larger amount of water is retained inside the block main body 30 due to the formation of the gap between the aggregates 31.

FIG. 6 shows another embodiment in which the configuration of FIG. 5 is changed. The inside of the block main body 30 is formed in a square shape by a partition wall 32. Also,
The above-mentioned aggregate 31 is filled in the space formed by these partition walls 32. Also in this case, the solidification by the cement is not performed, and the structure is simply filled.

Therefore, in this embodiment, since the inside of the block main body 30 is formed into a square shape by the partition wall 32, the strength is sufficiently maintained and the porous material 31 itself has In addition, a large amount of water is retained inside the block main body 30 by the formation of the gap between the aggregates 31.

FIG. 7 shows a method of forming and mounting the storage container 40 made of the above-described plastic film, plastic plate, or the like and made of a water-impermeable membrane.

That is, the mold 50 shown in the figure is for molding the above-mentioned block main body 30, and the water-impermeable membrane 40 is previously fitted into the mold 50 before molding the block main body 30. Then, in this state, the mixture of the above-mentioned aggregate 31 and concrete is poured, and the block upper plate 20 made of dense permeable pavement concrete is further laminated, so that the block body 30 and the block upper plate 20 The storage container 40 made of a water-impermeable membrane is integrally molded.

The storage container 40 made of a water-impermeable membrane may have a laminated structure in which a resin film 41 such as polyethylene or polypropylene is bonded by a nonwoven fabric 42 as shown in FIG. In this case, the durability of the water-impermeable membrane 40 is enhanced by the wear resistance of the nonwoven fabric 42.

As a method of fixing the storage container 40 made of a water-impermeable membrane to the block main body 30, a method as shown in FIG. 8 may be adopted.

That is, as shown in FIG. 6A, the storage container 40 made of a flat water-impermeable membrane is inserted into the block body 3.
As shown in FIG. 2B, while the container 40 is pressed from the lower surface side of the container 0, heat is applied to the container 40 made of a water-impermeable membrane.
May be subjected to packing welding for deforming the shape along the shape of the block body 30.

In the above embodiment, the case where the aggregate 31 of the block body 30 is made of a pumice or a porous gravel material such as pearlite, porous ceramic, porous plastic or the like has been described. Not limited to, aggregate 3
A material which gradually dissolves a sterilizing and algicidal substance, for example, copper or silver ions, for example, a soluble glass containing metallic copper or silver ions (AG glass, manufactured by Mitsubishi Rayon Engineering Co., Ltd.) is mixed into 1. Is also good.

In this case, if water is retained in the block body 30 for a long period of time, bacteria or algae will be generated, and the permeability of rainwater will be deteriorated. By mixing a material that gradually dissolves sterilizing and algicidal substances, such as copper or silver ions, into 31 to suppress the generation of bacteria or algae, maintain the permeability and aesthetics of rainwater for a long time can do.

The block main body 30 may be mixed with a thermosensitive high water-absorbing resin (Thermogel manufactured by Kojin). Here, thermogel, which is a temperature-sensitive high water-absorbing resin, is a water-absorbing polymer whose water-absorbing properties change critically depending on temperature conditions.

By the way, as shown in FIGS. 9 (a) to 9 (c), for example, the change in the water absorption characteristics is represented by the values of the temperature sensitivity of 15 to 20 ° C., 20 to 25 ° C., and 30 to 40 ° C. The magnification changes, and 30 to 30 shown in FIG.
By mixing a temperature-sensitive superabsorbent resin having a value of 40 ° C. into the block body 30, the following operation can be achieved.

That is, even in summer, during rainfall, it is 40 ° C.
Because of the following, a part of the water permeated into the gap is stored in the resin. These waters are adsorbed in the resin when the temperature is 40 ° C. or lower, and therefore are not easily evaporated. As long as the paving stones are heated and not hot, there is little evaporation and no wasted water is consumed. However, the surface of the paving stones was heated by the sun,
When the temperature exceeds 0 ° C., the resin is dehydrated, and the water rises due to the capillary force of the aggregate 31 and is vaporized, so that the pavement is cooled by the heat of vaporization as described with reference to FIG.

Further, since the stored water has a small amount of evaporation at a predetermined temperature or less, the block upper plate 20 for a long period of time.
Can be kept below a predetermined temperature.

When the above-described concrete block 10 is used in a cold region, the block main body 30 is formed with an allowance of about 10% in consideration of the coefficient of expansion of the water, so that the water content is reduced. It is also possible to easily avoid occurrence of cracks and the like when frozen.

In the concrete block 10 described above, a case has been described in which rainwater or the like held in the block main body 30 is prevented from permeating to the outside by the storage container 40 made of a water-impermeable membrane. When such concrete blocks 10 are laid on sidewalks, for example, excess rainwater or the like can permeate into the ground from joints between the concrete blocks 10, so that rainwater or the like can be directly supplied to rivers, drainage channels, or the like. The problem caused by flowing into the system is also eliminated.

Further, in each of the above-described embodiments, a case has been described in which a concrete product capable of moving moisture upward by capillary force is used as a material of the block upper plate 20, but the present invention is not limited to this example. Resin concrete having a low capacity may be used. In this case, the evaporation of water from the block upper plate 20 can be suppressed, so that the amount of water evaporation can be reduced.

[0070]

As described above, according to the concrete block of the present invention, all surfaces except for the upper surface side of the highly permeable block body are covered by the storage container made of the water-impermeable membrane. , Rainwater will penetrate into the inside of the block main body stored in the storage container from the top side and will be retained, and during sunshine, the retained water will gradually evaporate, and the heat of vaporization will cause the surface of the block main body to be evaporated. The temperature is lowered.

Therefore, the rainwater that has permeated from the upper surface side of the block main body is sufficiently retained inside the block main body, and the temperature of the surface of the block main body is maintained for a long time.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a concrete block of the present invention.

FIG. 2 is a sectional view taken along line aa of the concrete block shown in FIG.

FIG. 3 is a plan view showing a block upper plate of the concrete block of FIG. 1;

FIG. 4 is a view for explaining the operation of the concrete block of FIG. 1;

FIG. 5 is a plan view showing many embodiments when the configuration of the concrete block in FIG. 1 is changed.

FIG. 6 is a plan view showing various embodiments when the configuration of the concrete block in FIG. 5 is changed.

FIG. 7 is a view showing a method of mounting the water-impermeable membrane of FIG.

FIG. 8 is a view showing another mounting method of the water-impermeable membrane of FIG.

FIG. 9 is a view showing characteristics of the thermosensitive superabsorbent resin of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Concrete block 20 Block upper plate 21 Groove 30 Block main body 31 Aggregate 32 Partition wall 40 Water-impermeable membrane 50 Formwork

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[Procedure amendment]

[Submission date] August 23, 1996

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

[Title of the Invention] Concrete or brick block

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

The present invention relates to a block body having high permeability to rainwater or the like, which has a water permeability of 10 ⁻³ cm / sec.
Made of concrete stored in a storage container consisting of the following membranes
Or related to brick blocks .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction contents]

The present invention has been made in view of such circumstances, and is a concrete or brick blower capable of maintaining the temperature of the block surface for a long time.
The purpose is to provide a lock .

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

According to the first aspect of the present invention,
The block body with high porosity is transparent with the upper side open.
It is stored in a storage container made of a membrane having a water coefficient of 10 ⁻³ cm / sec or less, and rainwater that has permeated from the upper surface side of the block is retained in the block body inside the storage container, and after rainfall, The rainwater held in the block body is gradually evaporated.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction contents]

According to the first aspect of the present invention, all surfaces except the upper surface of the block body having a high porosity have a water permeability of 10 %.
^-3 cm / sec or less is covered by a storage container made of a membrane , so that rainwater permeates into the block main body stored in the storage container from the upper surface side and is retained after rainfall. The water that has been evaporated is gradually evaporated, and the heat of vaporization lowers the temperature of the block body surface.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

According to a fourth aspect of the present invention, the hydraulic conductivity is 1
0 ^{-3 cm} / sec container consisting of film, plastic film, plastic plate, it or drain port is formed by a water-impermeable concrete layer is provided
It is characterized by having.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction contents]

According to a fourth aspect of the present invention, the hydraulic conductivity is 10
^The storage container having a membrane of ⁻³ cm / sec or less is formed of a plastic film, a plastic plate, a concrete layer, a nonwoven fabric, or the like, and prevents free water permeating outside the water held inside the block main body. Drain
Is provided, the water holding ratio inside the block body is adjusted .

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

According to a sixth aspect of the present invention, the block body has a structure in which an aggregate made of a porous gravel material is solidified by cement, and the porosity of the large and small cavities is 20 to 50 %.
90% and vents,
It has a water hole .

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0069

[Correction method] Change

[Correction contents]

[0069] Further, in the above embodiments, the description has been given of the case of using a concrete product moisture as the material of the block upper plate 20 can be moved upward by the capillary force is not limited to this example, bricks In addition, resin concrete having a low capacity may be used. In this case, evaporation of moisture from the block upper plate 20 can be suppressed, and thus the amount of evaporated moisture can be reduced.

[Procedure amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0070

[Correction method] Change

[Correction contents]

[0070]

As described above, the concrete of the present invention is used.
According to over preparative steel or brick blocks, permeability all surfaces except the upper surface of the high permeability block body
Since it is covered with a storage container made of a film of 10 ⁻³ cm / sec or less , rainwater permeates into the block main body stored in the storage container from the upper surface side, and is retained in the sunshine. The water is gradually evaporated, and the heat of vaporization lowers the temperature of the surface of the block body.

[Procedure amendment 13]

[Document name to be amended] Statement

[Correction target item name] Explanation of sign

[Correction method] Added

[Correction contents]

[Description of Signs] 10 Concrete block 20 Block upper plate 21 Groove 30 Block body 31 Aggregate 32 Partition wall 35 Cavity 36 Water passage 40 Impermeable membrane 50 Formwork

[Procedure amendment 14]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 15]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

Claims (10)

[Claims] 1. A block main body having a high porosity is stored in a storage container made of a water-impermeable membrane having an open upper surface, and rainwater permeating from the upper surface of the block main body is provided inside the storage container. A concrete block, wherein the concrete block is held by the block body, and after rainfall, rainwater held by the block body is gradually evaporated. 2. An upper surface side of the block main body that closes an opening of the storage container and is covered with a block upper plate made of permeable pavement concrete having a higher density than the block main body. The concrete block according to claim 1, characterized in that: 3. The concrete block according to claim 2, wherein a plurality of grooves are formed on an upper surface side of the block upper plate. 4. The concrete block according to claim 1, wherein the storage container made of the water-impermeable membrane is formed of a plastic film, a plastic plate, and a water-impermeable concrete layer. 5. The concrete block according to claim 1, wherein the storage container made of the water-impermeable membrane has a laminated structure in which a resin film is sandwiched between nonwoven fabrics. 6. The block main body is characterized in that an aggregate made of a porous gravelly material is solidified by cement, and the pores are configured to be 20 to 90%. The concrete block according to claim 1, 2, 3, 4, or 5. 7. A small space partitioned by a plurality of partition walls is provided inside the storage container,
3. The small space is filled with an aggregate made of the porous gravelly material.
7. The concrete block according to 3, 4, 5 or 6. 8. The concrete block according to claim 6, wherein a material that gradually dissolves a sterilizing and algicidal substance is mixed into the aggregate. 9. The thermosensitive super-absorbent resin is mixed in the inside of the block main body.
The concrete block according to 3, 4, 5, 6, 7, or 8. 10. A coating film waterproofing agent is applied to the remaining surface except for the upper surface side of the highly permeable block main body, and in a state where water permeation to the outside is prevented by the coating film waterproofing agent, A concrete block wherein rainwater permeated from an upper surface side of the block main body is retained inside the block main body.