JP3455799B2 - Greening concrete blocks and secondary concrete products - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a greened concrete block adapted to retain root systems of soil and plants by using porous concrete, and more particularly,
The present invention relates to a greened concrete block suitable for greening a high water revetment of a large river. The present invention also relates to a secondary concrete product that can be used as a constituent element of such a green concrete block.

[0002]

2. Description of the Related Art In recent years, as interest in environmental problems has increased, measures to consider moisture and leisure have become more important as trends in social capital development. In other words, in civil engineering work, the number of policies that emphasize the preservation of the natural environment and landscape tends to increase, and the restoration of natural vegetation, ecosystem conservation,
Various techniques for creating a new green space have been proposed. In the case of rivers, technologies aimed at "creating multi-natural rivers" have been proposed and tested for the purpose of coexisting with nature and providing a place of relaxation for local residents. In addition, even in cases other than rivers, technologies that consider the natural environment and landscape have been proposed and tried in civil engineering works such as road construction and residential land development.

As an example of the multi-natural river development, a large amount of embankment (covering soil) is provided on the sloped concrete surface of the river bank to establish a vegetation base, and vegetation such as herbaceous plants is held and cultivated on the vegetation base. There is a technology for greening. Further, in this greening technology, there is a possibility that the soil cover and vegetation may erode or flow out during flooding to expose the concrete revetment, so there is also a greening technology that uses porous concrete, which is a multi-hard concrete as the vegetation base. With this greening technology,
Porous concrete is fixed in layers on the concrete surface of the river revetment, and a layer of soil is further layered on it to form a vegetation base, and the vegetation base holds and cultivates vegetation for greening.

[0004]

[Problems to be Solved by the Invention] As described above, in the riverbank revetment technique, the revegetation technique in which the vegetation base is composed of only the soil cover layer has the advantage of being in harmony with the surrounding landscape and being friendly to the natural environment. Therefore, it is mainly used for greening low water revetments. This greening technique may also be applied to high water revetments that function as embankments. However, if this greening technology is independently applied to a high water revetment, it is not ideal in terms of the function of controlling erosion of the embankment and leakage of water during flooding. That is, this greening technique cannot be said to be a technique that has both environmental and landscape aspects and functional aspects. Therefore, this greening technology has been implemented by covering the existing concrete revetment with soil. However, in this case, there is a possibility that the soil cover layer will be easily eroded and scoured during flooding, the concrete revetment will be exposed, and vegetation will flow out.
The cover layer and vegetation need to be restored. In addition, this greening technique requires a large amount of soil cover on the vegetation base. In addition, since a large amount of soil will reduce the cross-section of the river,
It causes a decrease in river flow, and it is necessary to take measures for that.
The cost increases. This problem is particularly noticeable in small and medium-sized rivers with a small running water profile.

Although the above-mentioned situation can be prevented by the greening technique using a vegetation base having a two-layer structure of a porous concrete layer and a soil-covering layer, the thickness or amount of the soil-covering layer is not sufficient due to the structure, and The amount of soil in the porous concrete layer cannot be secured enough. Therefore,
Poor water supply and fertilization to the vegetation may prevent the vegetation from being maintained for a long period of time, and may require additional fertilization or regular water supply. However, artificial irrigation is usually difficult because of the extremely widespread greening. Further, maintenance such as additional fertilization becomes complicated, and the cost may increase. In particular, this problem becomes remarkable because the river bank, which is the installation site, is likely to be heated and dried by sunlight or wind, which is a more severe growth condition for vegetation.

[0006] Therefore, the present invention meets the environmental requirements of environmental conservation and landscape harmony by maintaining greening by securing a sufficient amount of soil, and functional requirements such as a water-blocking function against running water or a surface soil erosion prevention function. Can be compatible, and
It is an object of the present invention to provide a greening concrete block that requires no maintenance and can reduce costs, and a concrete secondary product that can be used for such a greening concrete block.

[0007]

A green concrete block according to a first aspect of the present invention is formed into a substantially flat plate having a water blocking property, and has an upper surface having a beam structure composed of a plurality of projections.
A normal concrete layer having a water-impervious water storage portion formed between the projections, and a plurality of projections corresponding to the projections of the normal concrete layer are continuously formed over the entire upper surface of the projections of the normal concrete layer. And has a beam structure corresponding to the overall shape of the protrusions of the ordinary concrete layer, and a porous concrete layer having openings formed between the plurality of protrusions, and the ordinary concrete. A water reservoir of a layer and an opening of the porous concrete layer, and a pot portion having a recess opening on the surface side of the porous concrete layer, and at least a void of the porous concrete layer and soil filled in the pot portion. , A soil-containing vegetation having a root system, and the water impermeability of the ordinary concrete layer in the water storage part of the ordinary concrete layer Imparting to, as well as freely reservoir water to the water storage portion within a range not exceeding the upper end of the reservoir, the water exceeding the upper end of the reservoir were to be discharged to the outside through the porous concrete layer.

Therefore, in the green concrete block according to the first aspect, vegetation grows on the surface to green the laying site of a river revetment or the like to protect the environment and to harmonize with the surrounding landscape. At this time, in addition to the voids in the porous concrete layer, a sufficient amount of soil is filled in the water reservoir of the ordinary concrete layer and the pot formed by the opening of the porous concrete layer, and the soil is filled with a sufficient amount of fertilizer and Water, etc.
It can retain nutrients and water necessary for maintaining vegetation. Further, the pot portion of the porous concrete layer has a concave shape formed by the water storage portion of the ordinary concrete layer and the opening portion of the porous concrete layer, and a beam structure composed of a plurality of protrusions of the ordinary concrete layer is provided between the pot portions. Formed,
And, since a beam structure composed of a plurality of protrusions of a porous concrete layer is continuously and integrally laminated on the entire upper surfaces of a plurality of protrusions of a normal concrete layer, the soil is stably held, Prevent the movement of soil. On the other hand, for example,
Even when water pressure is applied to the surface of the greened concrete block of claim 1 by rainwater, surface sewage, or river running water, the pot portion can effectively prevent soil erosion. At the same time, when the greened concrete block of claim 6 is used for high water revetment and other applications requiring water impermeability, the ordinary concrete layer exerts water impermeability, causing erosion of the embankment slope during flooding, etc. Prevent water leakage. In addition, the lower part of the pot part constitutes a water-impervious water storage part due to the protrusion of the ordinary concrete layer, within the range not exceeding its upper end,
That is, water can be stored freely within the range from the boundary between the projection or the water storage section of the porous concrete layer and the projection or the opening section of the normal concrete layer. On the other hand, the amount of water that exceeds the upper end of the water storage portion of the ordinary concrete layer is drained to the outside through the porous concrete layer. In particular, when the water is laid on a slope or an inclined surface, water that would flow down without a water reservoir can be blocked and stored at the lower side surface of the water reservoir. Furthermore, in the greened concrete block, at least the voids of the pot part and the porous concrete layer are filled with soil, but in this case, as the greened concrete block, only the exposed surface of the projecting part of the beam structure receives heat input from sunlight. . Therefore, the heat input is transferred to the inside of the porous concrete layer only from the exposed surface of the projection of the beam structure. In addition, the entire surface side of the greened concrete block may be covered with soil, but in this case, even if the soil on the surface side flows out due to erosion due to rainwater or surface sewage, further runoff of soil will occur. Is prevented by the pot portion, and as described above, only the protrusion of the beam structure is exposed. Then, as the green concrete block, only the exposed surface of the projecting portion of the beam structure receives heat input from sunlight. Therefore, the heat input is transferred to the inside of the porous concrete layer only from the exposed surface of the projection of the beam structure.

According to a second aspect of the present invention, in the green concrete block according to the first aspect, the water storage portion formed between the protrusions of the ordinary concrete layer has a long groove shape extending in the left-right direction of the ordinary concrete layer, The opening formed between the protrusions of the concrete layer is in the shape of a long hole extending in the left-right direction of the porous concrete layer, and the pot portion is in the shape of a long groove recess extending in the left-right direction of the ordinary concrete layer and the porous concrete layer. With
A plurality of pot portions were arranged side by side at predetermined intervals in the front-rear direction of the ordinary concrete layer and the porous concrete layer.

Therefore, in addition to the effect of the first aspect, the pot portions of the porous concrete layer have a long groove concave shape extending in the left-right direction, and a plurality of pot portions are arranged at predetermined intervals in the front-rear direction, and the pot portions protrude from the protrusions. Since the beam structure is formed, it holds the soil stably and prevents the movement of the soil.

On the other hand, even when water pressure is applied to the surface of the greened concrete block of claim 2 by rain water, surface sewage, or river running water, the pot portion can effectively prevent soil erosion.

A green concrete block according to a third aspect of the present invention is the green concrete block according to the first aspect of the present invention, in which a water retaining sheet is arranged on the bottom surface of the pot portion.

Therefore, in addition to the effect of the first aspect, the water retaining sheet exerts water retaining ability and increases the water retaining amount of the entire soil. In addition, since the water retaining sheet is thin and requires almost no space, it does not affect the amount of soil filled in the pot. Furthermore, such a water retaining sheet is convenient to handle.

According to a fourth aspect of the present invention, in the green concrete block according to the first aspect, the vegetation is previously cultivated in a pot made of a biodegradable organic material, and the vegetation is inserted and fixed in the pot portion together with the pot. It is a thing.

Therefore, in addition to the action of claim 1, vegetation can be preliminarily produced in a potted state by, for example, sowing and cultivating a predetermined plant species in a field or the like by planting seedlings or cuttings. , Can be inserted and fixed in the pot as it is.

On the other hand, when the vegetation is transplanted from the production site to the pot portion of the porous concrete layer, the plant root is covered with a large amount of soil inside the pot. In addition, after a certain period of time has passed since the planting of the vegetation, the pot made of an organic material is decomposed by the biodegradation action of soil microorganisms and the like and integrated with the soil. Then, the soil inside the pot and the soil outside (such as the soil in the porous concrete layer) are integrated. Moreover, the pots do not remain as harmful after biodegradation or after humus.

A green concrete block according to a fifth aspect of the present invention is a green concrete block according to the first aspect, which is laminated on a water-impervious layer having water impermeability to form voids between coarse aggregates and to open on the surface side thereof. A porous concrete layer having a pot portion having a recessed shape, a soil filled in at least the voids of the porous concrete layer and the pot portion, and a vegetation having a root system in the soil,
A water-impervious water storage portion was provided on the bottom surface side of the pot portion. In addition, on the soil filled in the voids and the pot portion of the porous concrete layer, while further filling the soil constituting the surface vegetation base, suppress the movement of the surface vegetation base on the upper surface of the porous concrete layer. The movement restraining means is provided.

Therefore, in the greened concrete block according to the fifth aspect, vegetation grows on the surface to green the installation site such as a river bank to protect the environment and to harmonize with the surrounding landscape. At this time, in addition to the voids in the porous concrete layer, the pot portion is filled with a sufficient amount of soil, and the soil can retain a sufficient amount of fertilizer and water, such as nutrients and water necessary for maintaining vegetation. . Further, since the pot portion of the porous concrete layer has a concave shape, it holds the soil stably and blocks the movement of the soil. On the other hand, even when water pressure is applied to the surface of the vegetative concrete block according to claim 5, for example, due to rain water, surface sewage, or river running water,
The pot portion can effectively prevent soil erosion. In addition, the greened concrete block of claim 5,
When used for high water revetment and other applications that require water shielding,
Since there is an impermeable layer on the back side of the porous concrete layer, the impermeable layer exerts water impermeability and prevents erosion and water leakage on the dike slope at the time of flooding. In addition, a water-impervious water storage portion exists on the bottom surface side of the pot portion, and water can be stored freely within the range not exceeding the upper end thereof. On the other hand, the amount of water that exceeds the upper end of the water storage portion is drained to the outside through the porous concrete layer. In particular, when the water is laid on a slope or an inclined surface, water that would flow down without a water reservoir can be blocked and stored at the lower side surface of the water reservoir. In addition, the soil of the surface vegetation base covers the entire top surface of the greened concrete block, and constitutes the vegetation growth base together with the soil in the voids of the porous concrete layer and in the pot part. On the other hand, the movement suppressing means of the porous concrete layer resists the movement of the surface concrete vegetation base against the force applied to the surface vegetation foundation on the upper surface of the vegetated concrete block from rainwater, surface sewage, river running water and the like.

A concrete secondary product according to claim 6 is
A plurality of ordinary concrete layers having a water-impervious substantially flat plate shape and an upper surface having a beam structure composed of a plurality of protrusions, and a water-impervious water storage portion formed between the protrusions, and the ordinary concrete layer. Corresponding to the entire shape of the protrusions of the ordinary concrete layer by continuously and integrally forming a plurality of protrusions corresponding to the protrusions on the entire upper surfaces of the plurality of protrusions of the ordinary concrete layer. A porous concrete layer having a beam structure and having openings formed between the plurality of protrusions is provided, and a surface side of the porous concrete layer is formed by the water storage portion of the ordinary concrete layer and the opening portion of the porous concrete layer. A pot portion having a concave shape and opened at was formed.

Therefore, when it is necessary to green the river bank or the like, at least the voids and the pots of the porous concrete layer are filled with soil, and the root system of vegetation is retained in the soil, whereby the method according to claim 6 is achieved. Secondary concrete products can be used as green concrete blocks. This greened concrete block has the same structure as the greened concrete block according to claim 1 and exhibits the same operation.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In addition, the same elements are denoted by the same reference symbols throughout the respective embodiments, and the description thereof will be omitted.

FIG. 1 is a sectional view showing a laid state of a green concrete block according to the first embodiment of the present invention. FIG. 2 is a plan view of the greened concrete block according to Embodiment 1 of the present invention, showing a state before the pot portion is filled with soil. 3 is a cross-sectional view taken along line XX of FIG. 2, showing a state in which the greened concrete block of FIG. 2 is cut left and right along the length direction of the pot portion. FIG. 4 is a sectional view taken along the line YY of FIG. 2, showing a state in which the greened concrete block of FIG. 2 is cut back and forth. FIG. 5 is a cross-sectional view taken along line ZZ of FIG. 4, showing a state in which the greened concrete block of FIG. 4 is cut along the boundary surface between the ordinary concrete layer and the porous concrete layer. FIG. 6 is a perspective view of the greened concrete block according to Embodiment 1 of the present invention, showing a state before the pot is filled with soil.

As shown in FIGS. 1 and 2, the first embodiment
The greened concrete block of 1 has a normal concrete layer 10 as a water-impervious layer and a porous concrete layer 20, and has a substantially rectangular flat plate shape as a whole. The ordinary concrete layer 10 is made of cement, fine aggregate, coarse aggregate, etc.
It is formed in a substantially rectangular flat plate shape having required strength and water impermeability. On the other hand, the porous concrete layer 20 is made of porous concrete and has a rough aggregate 21 of irregular shape such as gravel.
By connecting the cement with a binder such as cement paste,
It is formed in a substantially rectangular flat plate shape corresponding to the ordinary concrete layer 10. In the porous concrete layer 20, a large number of irregularly shaped voids 22 are formed between the coarse aggregates 21. The porous concrete layer 20 may be formed by including fine aggregate. The porosity of the porous concrete layer 20 is determined in consideration of the overall strength, soil filling rate and the like.

Further, as shown in FIGS. 3 to 5, the upper surface side of the ordinary concrete layer 10 has protrusions 11A, 11B, 11
The beam structure is made of C. That is, on the upper surface side of the ordinary concrete layer 10, protrusions 11A are formed so as to extend in the front-rear direction (vertical direction in FIG. 5) along the left and right ends thereof, and the protrusions 11B extend in the left-right direction along the rear end thereof. Are formed. Further, a total of three protrusions 11C are formed between the left and right protrusions 11A so as to extend in the left-right direction at a predetermined interval in the front-rear direction. Thereby, the protrusions 11A, 1
A long groove-shaped water storage portion 12 extending in the left-right direction is formed between 1B and 11C. The protrusions 11A, 11B, 11C have a substantially trapezoidal cross section, and correspondingly, the water storage section 12 has a substantially inverted trapezoidal cross section. The water storage section 12 is provided with water impermeability by the ordinary concrete layer 10 and can store water inside thereof within the range of its cross section.

In the ordinary concrete layer 10, main reinforcing bars 13 and reinforcing reinforcing bars 14 are vertically and horizontally embedded. In addition, cylindrical sleeves 15 extending in the left-right direction toward the inside are formed at three positions on the front and back and in the center on the vertical side surfaces that are the joint surfaces at the left and right ends of the ordinary concrete layer 10.

As shown in FIGS. 2 to 4, the porous concrete layer 20 is a protrusion 11 of the ordinary concrete layer 10.
A beam structure corresponding to the overall shape of the protrusions 11A, 11B, 11C is formed by continuously and integrally laminating on the entire upper surfaces of A, 11B, 11C. That is, the porous concrete layer 20 includes a protrusion 23A that extends in the front-rear direction at the left and right ends of the porous concrete layer 20 corresponding to the protrusion 11A, and a protrusion 23B that extends in the left-right direction at the rear end of the porous concrete layer 20 corresponding to the protrusion 11B. Further, the porous concrete layer 20 includes three protrusions 23C corresponding to the protrusions 11C and extending leftward and rightward at predetermined intervals between the protrusions 23A. Thereby, between the protrusions 23A, 23B, 23C of the porous concrete layer 20,
An elongated hole-shaped opening 24 extending in the left-right direction is formed. The cross sections of the protrusions 23A, 23B, and 23C are the same as those of the protrusions 11A and 11C.
The trapezoidal shape is continuous with B and 11C, and correspondingly, the cross section of the opening 24 has a substantially inverted trapezoidal shape continuous with the water storage section 12.

In the first embodiment, the water storage section 12 and the opening section 24 form a pot section 25 having a long groove concave shape opening on the surface side of the porous concrete layer 20. That is, the pot portion 25 penetrates the porous concrete layer 20 and extends partway inside the ordinary concrete layer 10, and has a water-impervious water storage portion 12 formed by the ordinary concrete layer 10 in the lower portion thereof. Also, the pot section
5 has a substantially inverted trapezoidal cross section corresponding to the shapes of the water storage portion 12 and the opening 24, and has a long groove concave shape extending in the left-right direction.

The front ends of the ordinary concrete layer 10 and the porous concrete layer 20 are not formed with protrusions and are open ends. However, since the open end of the front end of the ordinary concrete layer 10 also has the same water impermeability, for example, when it is laid on a slope or an inclined surface as shown in FIG. Projection 11C
A water storage portion 12A having a water blocking function similar to that of the water storage portion 12 is formed in a corner portion between the front end and the open end bottom surface. Further, an opening 24A similar to the opening 24 is provided between the porous concrete layers 20 of the adjacent greened concrete blocks.
Is formed, and the water storage portion 12A and the opening portion 24A form a pot portion 25A. In the present embodiment, the front ends of the pot portions 25A located at the front ends of the ordinary concrete layer 10 and the porous concrete layer 20 are open to form open ends. In addition, ordinary concrete layer 10
Also, the rear end of the pot portion 25 located at the rear end of the porous concrete layer 20 may be opened.

The pot portion 2 of the porous concrete layer 20
5, 25A and voids 22 in the porous concrete layer 20
Is filled with soil to form a lower vegetation base 31. Further, soil is further filled on the lower vegetation base so as to cover the whole with a predetermined thickness to form a surface vegetation base 32. The root system of the vegetation 33 is fixed and retained on the lower vegetation base 31 and the surface vegetation base 32.

In order to manufacture the green concrete block of the first embodiment, first, the bottom of the mold having a shape corresponding to the overall shape shown in FIG. 2 or 6 is filled with the concrete material of the porous concrete layer 20, The main reinforcement 14 and the distribution reinforcement 15 of the ordinary concrete layer 10 are arranged thereon.
Then, the concrete material of the ordinary concrete layer 10 is filled from above and cured and solidified. As a result, the ordinary concrete layer 10 having the shape shown in FIG. 5 is formed, and the block-shaped molded product shown in FIG. 2 or 6 is obtained. Needless to say, a molding method other than the above may be adopted.

Further, the voids 22 of the porous concrete layer 20 are filled with soil, and the pot portions 25 are also filled with soil to form a lower layer vegetation base 31. Similarly, the top surface of the porous concrete layer 20 is also filled with soil to form the surface vegetation base 32. And the surface vegetation base 32
Mix seeds by sowing, raise seedlings, and grow the desired vegetation 3
3 is fixed and held. Alternatively, the vegetation 33 is fixed and held in the pot portion 25 of the porous concrete layer 20 by planting seedlings or the like. As a result, the greened concrete block shown in FIG. 1 is completed.

Here, the soil of the lower layer vegetation base 31 and the soil of the surface layer vegetation base 32 may be filled simultaneously or separately. When filling separately, for example, the voids 22 of the porous concrete layer 20 and the pot portions 25, 2
5A is filled with soil to form a lower layer vegetation base 31, and the soil is filled to a predetermined thickness from above to form a surface layer vegetation base 32. Moreover, the soil of the lower layer vegetation base 31 and the soil of the surface layer vegetation base 32 may be the same soil or different soils. Furthermore, in the lower-layer vegetation base 31, the soil in the voids 22 of the porous concrete layer 20 and the soil in the pot portions 25, 25A may be separate soils, or the same soil may be used. However, it is preferable to use the same soil in terms of the efficiency of soil filling work.

As the soil, either natural soil or artificial soil may be used. Further, it is preferable that the soil contains a fertilizer in advance. As the soil of the lower vegetation base 31 and the surface vegetation base 32, any soil can be used as long as it has a predetermined chemical property containing a fertilizer such as phosphoric acid and potassium in a predetermined ratio. It is also possible to use the soil generated at the site.

Next, a method of using (laying method) the green concrete block according to the first embodiment will be described.

A large number of the greened concrete blocks according to the first embodiment are laid on a river bank, a road retaining wall, various slopes, and the like, and the surface to be laid is greened. In particular, the greened concrete block according to the first embodiment is used for a high water revetment or a bank protection shore. In this case, a large number of greened concrete blocks are closely arranged on the surface of the revetment, etc., as the laying surface. At this time, the green concrete block can be suspended and supported via the sleeves 15 at the left and right ends and can be arranged at a predetermined position on the laying target surface. At this time, the closely arranged green concrete blocks are arranged so that their sleeves face each other on the left and right. In this way, rod-shaped fasteners (joint pins, joint bolts, etc.) having the same diameter as the sleeve can be inserted into the pair of opposed sleeves, and adjacent greened concrete blocks can be connected to each other in the left and right positions. In addition,
Adjacent greening concrete blocks may be bonded and connected to each other by adhering opposite side surfaces thereof with mortar or the like. As a result, the large number of green concrete blocks are integrally joined and connected to each other, and are stably held on the laying target surface by their own weight. Other than this, the same joining method as in the case of ordinary concrete block upholstery can be used as a joining method for greened concrete blocks.

The above-mentioned green concrete blocks are used for road revetments, road retaining walls, slopes, etc. Also,
Examples of the laid state (laying target surface) include cast-in-place concrete such as tension concrete, precast concrete such as Machi block, cut soil, and embankment.
Furthermore, when laid on a slope, it can be used on either a gentle slope or a steep slope.

The vegetation 33 is cultivated and grown on the surface of the green concrete block thus arranged on the surface to be laid, and the surface to be laid is greened. As a result, it is possible to protect the environment of the surface to be laid, such as river revetments, and also to harmonize with the surrounding landscape. Further, since the vegetation 33 and the surface vegetation base 32 cover up the porous concrete layer 20,
The concrete quality is invisible from the outside, creating a more natural and friendly atmosphere.

At this time, in the vegetative concrete block according to the first embodiment, in the lower vegetation base 31, in addition to the soil in the voids 22 of the porous concrete layer 20, a sufficient amount of soil is filled and secured in the pot portions 25, 25A. To be done. Also, a sufficient amount of soil is filled and secured on the porous concrete layer 20 as the surface vegetation base 32. Therefore, a sufficient amount of fertilizer and water for those soils,
The nutrients and water necessary for maintaining the vegetation 33 can be retained. As a result, it is possible to form a growth base having a high fertilizing power and a sufficient supply of nutrients. Then, it is possible to supply sufficient fertilizer and water to the vegetation 33 without requiring special maintenance, and to maintain the vegetation 33 for a long period of time.
Can be maintained. That is, the greened concrete block according to the first embodiment basically eliminates the need for maintenance and costs for maintaining the vegetation 33 after laying, and thus can reduce costs.

On the other hand, since the pot portions 25 and 25A have a long groove recessed shape, the soil filled inside is stably held,
It is possible to prevent the movement of the filled soil. As a result, for example, even when water pressure is applied to the surface of the greened concrete block due to rainwater, surface sewage, or river running water,
Erosion of the filled soil can be effectively prevented by the pot portions 25 and 25A. That is, the pot portions 25 and 25A can reduce and reduce the impact force of rainwater, running water, etc. on the slope G of a river bank or a road retaining wall.
Further, when the green concrete block of the first embodiment is laid on the slope G, the porous concrete layer 20 itself prevents problems such as erosion, collapse, and sliding of the slope G itself. Then, by laying such a greened concrete block on a river bank, a road retaining wall, etc., it is possible to contribute to environmental conservation and promotion of greening.

Particularly, when a plurality of greenery concrete blocks are connected to each other, the pot portion 25A for opening the front end or the rear end is located at the joint end in the front-rear direction of the adjacent greenery concrete blocks. Therefore, at the joint ends thereof, the projection of the beam structure does not exist and the pot portion 25A exists. As a result, a sufficient amount of soil can be filled in the pot portion 25A even at the joint boundary portion of the greened concrete block.

In the greened concrete block thus arranged, the ordinary concrete layer 10 has necessary and sufficient water impermeability, and when the ordinary concrete layer 10 is laid on a river revetment or the like as the surface to be laid, running water during flooding, etc. Surely prevent scouring, erosion, and water leakage from the levee due to the levee, and fully exert the desired revetment function. For example, at the time of flood,
Even when the running water of the river reaches the high water revetment over the high water surface, the running water is blocked by the ordinary concrete layer 10 and enters the inside of the levee body to become permeated water, which causes problems such as weakening the levee body. There is no such thing.

As a result, when the green concrete block according to the first embodiment is applied to a running water structure or a submerged structure requiring high water impermeability such as a high water revetment, dike protection, bank collapse prevention and river channel fixation. The original flood control functions such as the above can be fully exerted.

That is, the greened concrete block according to the first embodiment can achieve both environmental aspects such as environmental conservation and landscape harmony and functional aspects such as water shielding.

The ordinary concrete layer 10 having water impermeability as described above prevents water and nutrients in the soil of the lower vegetation base 31 and the surface vegetation base 32 from escaping downward,
Contributes to the retention of water and nutrients in the filled soil. Further, the ordinary concrete layer 10 is used for filling the voids 22 of the porous concrete layer 20 with soil, during transportation, during laying, etc.
The outflow of the soil filling the vegetation bases 31 and 32 is prevented.

Furthermore, the ordinary concrete layer 10 increases the strength of the greened concrete block itself. In addition, the ordinary concrete layer 10 has a weight (specific gravity) of the greened concrete block itself when ALC aggregate is used as coarse aggregate of the porous concrete layer 20, as described later.
Can be controlled. For example, when laying in a place where a certain amount of weight (specific gravity) is required, such as a river bank, the weight (specific gravity) of the greened concrete block can be increased and the stability after laying can be improved.

FIG. 7 is a partial cross-sectional view showing the water storage function of the water storage section of the green concrete block according to the first embodiment.

In the green concrete block according to the first embodiment, as shown in FIG. 3, the lower portions of the pot portions 25 and 25A constitute the water-impervious water storage portions 12 and 12A, which are within a range not exceeding the upper end thereof, that is, , Porous concrete layer 20
Within the range of the boundary between the normal concrete layer 10 and
It becomes possible to store water of a predetermined level L inside. as a result,
It is possible to increase the water retention capacity of the entire soil in the pot portions 25 and 25A, and to provide a better vegetation growth base.

On the other hand, the amount of water that exceeds the upper ends of the water storage portions 12 and 12A is drained to the outside through the porous concrete layer 20. As a result, the excess water is stored in the pot parts 25, 25.
It can be prevented from remaining in A and causing root rot and the like of the vegetation 33.

In particular, when the green concrete block according to the first embodiment is laid on a slope or an inclined surface, the water that would flow down as it is without the water reservoirs 12 and 12A is stored under the water reservoirs 12 and 12A. It can be stored by shutting off at the side surface of the side. That is, as shown in FIG.
When laying the greenery concrete block on the slope so that 5,25A extends to the left and right (horizontal direction), the greenery concrete block tilts back and forth according to the slope of the slope, and the bottom surface of the water storage section 12 of the ordinary concrete layer 10 Incline in the width direction (front-back direction). Therefore, surface vegetation base 3 from outside the greened concrete block due to rainwater, surface runoff, etc.
2 and the water that has infiltrated into the soil of the lower-layer vegetation base 31 travels in the soil and is blocked within a range that does not exceed the lower side surface upper end of the water storage unit 12. As a result, even when the water is laid on a slope or an inclined surface, the water that normally flows down is stored in the water storage section 12, 12A.
It can be maintained within the range of height to secure a sufficient water retention amount, and a good growth base for the vegetation 33 can be provided. Further, the water that exceeds the upper side edges of the water storage sections 12 and 12A is drained to the outside through the porous concrete layer 20 as excess water, and thus it is possible to prevent the root rot of the vegetation 33 from occurring. .

As described above, in the greened concrete block according to the first embodiment, the pot portions 25 and 25A are formed into long groove recesses extending in the left-right direction of the porous concrete layer 20, and the plurality of pot portions 25 and 25A are porous. The concrete layers 20 are arranged side by side at predetermined intervals in the front-rear direction, and the projections 11A, 11B, 1 are provided between the pot portions 25, 25A.
The beam structure is composed of 1C, 23A, 23B and 23C.

Therefore, as shown in FIG. 4, at the laying site, the entire surface side of the greened concrete block is covered with the soil of the surface vegetation base 32, but in this case, even if the surface layer is eroded by rainwater or surface sewage, etc. Vegetation base 32
Even if the soil of the above is leaked out, the further outflow of the soil is prevented by the pot portions 25 and 25A, and the projecting portion 11 of the beam structure is provided.
Only A, 11B, 11C, 23A, 23B and 23C are exposed. And as a green concrete block,
Beam structure protrusions 11A, 11B, 11C, 23A, 23
Only the exposed surfaces of B and 23C receive heat input from sunlight.
Therefore, the heat input is the protrusions 11A, 11B, 1 of the beam structure.
It is transmitted to the inside of the porous concrete layer 20 only from the exposed surfaces of 1C, 23A, 23B, and 23C.

As a result, the amount of heat incident on the soil in the porous concrete layer 20 and the pot portions 25 and 25A can be suppressed, and the soil can be effectively prevented from drying. In addition, due to the beam structure, the porous concrete layer 20
The strength of can be increased.

FIG. 8 is a sectional view of a greened concrete block according to the second embodiment of the present invention.

The green concrete block according to the second embodiment has the ordinary concrete layer 40 and the porous concrete layer 50 as the water-impervious layers as in the first embodiment, and the overall shape thereof is the green concrete according to the first embodiment. Similar to blocks. On the other hand, the green concrete block of the second embodiment differs from that of the first embodiment in the shape of the ordinary concrete layer 40.

That is, in the greened concrete block according to the second embodiment, the projections 11A, 11B and 11C constituting the beam structure are omitted from the ordinary concrete layer 10 of the greened concrete block according to the first embodiment. That is, as shown in FIG. 8, the ordinary concrete layer 40 has a simple rectangular flat plate shape. On the other hand, the porous concrete layer 50 is formed on the upper surface of the ordinary concrete layer 40 so as to form the beam structure similar to that of the first embodiment.
1 is integrally formed. That is, the protrusion 51 is the protrusion 11A, 11B, 11C and the protrusion 23A, 23 of the first embodiment.
It has a shape (beam structure) in which B and 23C are united. Then, the pot portions 25, 2 of the first embodiment are provided between the protrusions 51.
The pot parts 52 and 52A similar to 5A are formed.
The pot portion 52A on the front end side has an open end, like the pot portion 25A of the first embodiment.

In the first embodiment, the pot portions 25, 25A
Extends through the porous concrete layer 20 into the ordinary concrete layer 10 and has a water-impervious water storage section 1 below it.
2 and 12A are provided, in the second embodiment, the pot portion 52 extends only through the porous concrete layer 50 and stops on the upper surface of the ordinary concrete layer 40.
As a result, the pot parts 52 and 52A of the green concrete block according to the second embodiment do not have the water storage function of the water storage parts 12 and 12A as in the first embodiment.

A water retaining sheet 61 is arranged on the bottom surfaces of the pot portions 52 and 52A. This water retention sheet 61 is a sheet made of a non-woven fabric or the like in which a high-molecular-weight absorbent polymer is housed in a layered manner to form a sheet. Is. Further, soil is filled in the voids of the porous concrete layer 50 and in the pot portions 52, 52A, and constitutes the lower-layer vegetation base 31, as in the first embodiment. In addition, also in the present embodiment, as in the first embodiment,
It is preferable to provide the surface vegetation base 31.

The green concrete block of the second embodiment configured as described above has the same operation and effect as those of the first embodiment. In addition, as in the first embodiment, the water storage unit 1
Although it does not have a water storage function due to 2, 12A, since the thickness of the porous concrete layer 50 can be increased,
There is an effect that the soil filling amount of the lower layer vegetation base 31 can be increased.

Further, in the second embodiment, the water retaining sheet 61
Can exhibit water retention, can increase the water retention of the entire soil of the pot portions 52, 52A, and can sufficiently retain the nutrients and water necessary for maintaining the vegetation 33. As a result, it is possible to form a growth base having a large fertilizer retaining capacity and a water retaining capacity and a sufficient nutrient supply amount and water supply amount, and it is possible to maintain the vegetation 33 for a long period of time without requiring special maintenance. . Further, since the water retaining sheet 61 is thin and requires almost no space, it does not affect the amount of soil filled in the pot portions 52 and 52A. Further, the water retention sheet 61 is convenient to handle. The water retention sheet 61 of the present embodiment may be provided on the bottom surfaces of the pot portions 25 and 25A of the first embodiment.

FIG. 9 is a partial sectional view showing a greened concrete block according to the third embodiment of the present invention.

The vegetative concrete block according to the third embodiment is provided with movement restraining means for restraining the movement of the surface vegetation base 31 on the upper surface of the porous concrete layer 20 of the vegetative concrete block according to the first embodiment. The other configuration is the same as that of the first embodiment. That is, in the second embodiment, the upper surface of the projecting portion 23C of the porous concrete layer 20 is the wavy surface 71 in which the uneven curved surface having a regular cross-section is continuous in the front-rear direction (left-right direction in FIG. 9). The wavy surface 71 constitutes a movement suppressing means. The ridge lines of the wavy surface 71 extend in the left-right direction so as to be parallel to each other. The corrugated surface 71 of the porous concrete layer 20 may have a shape in which irregular surfaces having a regular cross-sectional shape are continuous, as will be described later. For example, the upper surface of the projecting portion 23C of the porous concrete layer 20 may be a wavy surface in which uneven curved surfaces having a zigzag cross section are continuous in the front-back direction.

According to the third embodiment, even when the green concrete block is laid on the steep slope, the soil of the surface vegetation base 32 shown by the two-dot chain line on the upper side in FIG. Can be securely held. That is, the corrugated surface 71 as the movement suppressing means of the porous concrete layer 20 resists the force applied to the surface vegetation base 32 on the upper surface of the greened concrete block from rainwater, surface sewage, river running water, etc. The movement of the base 32 is suppressed. As a result, it is possible to effectively prevent the soil of the surface vegetation base 32 from sliding down, collapsing, eroding, or the like due to rainwater, surface runoff, river runoff, or the like. Further, as a result, the thickness of the soil (covering layer) of the surface vegetation base 32 can be increased and the total amount of soil can be increased, so that a better growth base of the vegetation 33 can be obtained.

Further, in the green concrete block of the third embodiment, even if the soil of the surface vegetation base 32 flows out due to erosion due to rainwater or surface sewage,
As shown by the two-dot chain line on the lower side in FIG. 9, on the surface side of the greened concrete block, only the top portion of the convex portion of the wavy surface 71 is exposed, and the whole is not exposed. That is, only the top portion of the convex portion of the wavy surface 71 appears linearly as a ridge line,
Linearly affected by solar radiation. Therefore, the amount of heat incident on the inside of the porous concrete layer 20 is very small, and it is difficult to raise the temperature inside the green concrete block. As a result, even if the soil of the surface vegetation base 31 flows out, the lower vegetation base 3
The drying of the soil of No. 1 can be effectively suppressed.

FIG. 10 is a perspective view schematically showing a main part of a green concrete block according to the fourth embodiment of the present invention.

The vegetation structure of the green concrete block according to the fourth embodiment is different from that of the first embodiment, and the other structures are the same as those of the first embodiment. That is, the fourth embodiment
Is the pot parts 25, 25 of the porous concrete layer 20.
The potted plant 80 is accommodated and held in A. The potted plant 80 is cultivated in advance in a field or the like, and is a plant in which the vegetation 83 is grown in the soil 82 filled in the pot 81 by sowing and planting, and the root system thereof is retained and fixed. The pot 81 is made of a biodegradable organic material and has a substantially inverted trapezoidal cross section corresponding to the pot portions 25 and 25A, and can be inserted into and held by the pot portions 25 and 25A. In addition, in the fourth embodiment, three potted plants 80 are inserted and held at predetermined intervals in the lengthwise direction of the pot portions 25 and 25A having the long groove concave shape. Furthermore,
When the gap C is generated between the potted plants 80, the gap C is filled with soil. In the present embodiment, the soil 82 in the pot 81 constitutes the lower vegetation base 31 together with the soil in the voids 22 of the porous concrete layer 20.

As described above, in the fourth embodiment, the vegetation 83
Together with the pot 81 filled with soil, the pot parts 25, 25
At this time, the outer surface (both front and rear surfaces) of the pot 81 is in close contact with the inner surface (both front and rear surfaces) of the pot portions 25, 25A and is positioned forward and backward. In addition, pot 8
Any material can be used as 1 as long as it is a biodegradable organic material such as paper, biodegradable plastic, and peat (peat) used for pots (small bowls) for growing seedlings.

In the fourth embodiment, the soil of the lower vegetation base 31 and the soil of the surface vegetation base 32 may be filled at the same time or separately. That is, first, the lower vegetation base 31 is placed in the void 22 of the porous concrete layer 20.
It is also possible to fill the soil of No. 1 and store the potted plant 80 in the pot portions 25 and 25A, and then separately fill the soil of the surface vegetation base 32. In this case, the pot parts 25, 25A
If there is a gap C between the plant and the potted plant 80 or between the potted plant 80, the gap C is filled with soil, but this may be performed at the same time as the soil filling of the surface vegetation base 32, and before that. You may go to Or potted plants 8
After storing 0, the soil of the lower vegetation base 31 and the soil of the surface vegetation base 32 may be simultaneously filled. Further, the soil of the lower vegetation base 31 and the soil 82 in the pot 81 may be separate soils, or the same soil may be used. However, it is preferable to use the same soil from the viewpoint of mitigating changes in the soil environment at the time of transplanting the vegetation 33. Furthermore, the soil of the surface vegetation base 32 and the soil 82 in the pot 81 may be separate soils, or the same soil may be used.

Next, the effect obtained by previously cultivating the vegetation 83 in the biodegradable pot 81 to form the potted plant 80 will be described in detail.

In the green concrete block of the fourth embodiment, the potted plant 80 is prepared in advance, and is fitted and fixed in the pot portions 25 and 25A of the separately molded porous concrete layer 20. Therefore, for example, the vegetation 83 can be pre-produced in a potted state by sowing and cultivating a predetermined plant species in a field or the like by planting seedlings or raising seedlings or cuttings, and each potted plant 80, pot portion 25, 25A. It can be inserted and fixed as it is. As a result, it is easy to plant the vegetation 83 on the greened concrete block, and productivity and workability can be improved. Also, cultivate vegetation 83 in pot 8
Since it is carried out in No. 1, the cultivation space is small and the greenhouse can be used, so that the productivity is good.

On the other hand, when the vegetation 83 is transplanted from the production site to the pot portions 25 and 25A of the porous concrete layer 20, since the plant roots are covered with a large amount of soil 82 inside the pot 81, the lower vegetation base 31 Alternatively, there is no abrupt change between the surface vegetation base 32 and the soil, and environmental changes at the initial stage of transplantation are reduced, and the survival and growth of the vegetation 83 can be significantly improved.

After a certain time has passed after planting the vegetation 83, the pot 81 made of an organic material is decomposed by the biodegradation action of soil microorganisms and integrated with the soil 82. Then, the soil 82 inside the pot 81 and the soil outside (the soil of the lower layer vegetation base 31 and the surface layer vegetation base 32) are integrated. Furthermore, the pot 81 does not remain as a harmful substance after biodegradation or humus. As a result, it is environmentally friendly and does not impair the functions of the soil base or the growth base.

In particular, when the pot 81 is made of paper, the pot 81 made of paper exhibits high water retention before biodegradation. As a result, it is advantageous for supplying water to the vegetation 83. In addition, the paper pot 81 becomes an organic fertilizer that additionally supplies nutrients to the soil of the lower vegetation base 31 and the surface vegetation base 32 after biodegradation or humus. As a result, nutrients can be supplied to the vegetation 83 without additional fertilization, and its growth can be promoted. Furthermore, if the pot 81 is formed from waste paper (recycled paper), it can contribute to the recycling of waste paper to a large extent, and contribute to the purpose of environmental conservation and promotion of greening, which is the original purpose of the present invention.

Further, in the fourth embodiment, the pot portions 25,
The potted plant 80 having three substantially square box-shaped pots 81 is configured to be inserted into the pot portions 25, 25A at a predetermined interval in the longitudinal direction of the pot portions 25, 25A. The number of potted plants 80 to be used and the shape of the pot 81 can be variously changed. For example, a potted plant is constructed by filling soil in a pot having a rectangular pot shape corresponding to the long groove recessed shape of the pot portion 25, 25A to grow vegetation, and only one potted plant 25, 25A It may be inserted and held in. Alternatively, two or four or more potted plants 80 may be configured to be inserted at predetermined intervals in the length direction of the pot portions 25, 25A.

Further, in any of the above cases, a gap C is not provided between the inner surface of the pot portion 25, 25A and the pot 81 or between the pot 81 and the pot 81.
You may arrange them closely. In this case, the soil filled in the gap C is unnecessary, and the work can be omitted. That is, the shapes of the pot portions 25, 25A and the pot 81 are the same as those of the pot portion 25, 25A, respectively.
Any shape that can be inserted into

FIG. 11 is a sectional view of a greened concrete block according to the fifth embodiment of the present invention.

The greened concrete block according to the fifth embodiment has the same ordinary concrete layer 40 as that of the second embodiment.
Have. On the other hand, the porous concrete layer 90 according to the fifth embodiment has a substantially rectangular flat plate shape having a beam structure on the upper surface, like the overall shape of the greened concrete block according to the first embodiment. That is, on the upper surface side of the porous concrete layer 90, a protrusion 91 having the same configuration as the protrusion 51 of the second embodiment is formed. Then, between the protrusions 91, the pot portion 9 similar to the pot portions 52 and 52A of the second embodiment.
2, 92A are formed. Note that the pot portion 92A on the front end side has an open end similarly to the pot portion 52A of the second embodiment. Therefore, in the fifth embodiment, the pot portion 92 extends only through the porous concrete layer 90 and stops midway in the thickness direction. This allows
The pot portions 92 and 92A of the greened concrete block according to the fifth embodiment are similar to the water storage portion 12 of the first embodiment.
It does not have the water storage function of 12A. In addition, the water retaining sheet 61 of the third embodiment is provided on the bottom surface of the pot portions 92 and 92A.
May be arranged.

The green concrete block of the fifth embodiment having the above-described structure has the same operation and effect as those of the first embodiment. In addition, as in the first embodiment, the water storage unit 1
Although it does not have a water storage function due to 2, 12A, since the thickness of the porous concrete layer 90 can be increased,
There is an effect that the soil filling amount of the lower layer vegetation base 31 can be increased.

FIG. 12 is a sectional view of a greened concrete block according to the sixth embodiment of the present invention.

The green concrete block according to the sixth embodiment includes a normal concrete layer 40 and a porous concrete layer 100 having the same structures as those of the fifth embodiment. On the other hand, unlike the porous concrete layer 90 of the fifth embodiment, the porous concrete layer 100 has a closed end instead of an open end at its front end. That is, the porous concrete layer 100 has a substantially rectangular flat plate shape having a beam structure on its upper surface, like the porous concrete layer 90 of the fifth embodiment. In addition, the porous concrete layer 10
On the upper surface side of 0, a protrusion 101 having the same structure as the protrusion 91 of the fifth embodiment is formed. The protrusion is also formed at the front end of the porous concrete layer 100. Therefore, a pot portion 102 similar to the pot portion 92 of the fifth embodiment is formed between the protrusions 101, and the pot portion 1 on the front end side is formed.
02 also has the same shape as the other pot portions. The water retaining sheet 6 according to the third embodiment is provided on the bottom surface of the pot portion 102.
1 may be arranged.

The green concrete block according to the sixth embodiment having the above-described structure has the same operation and effect as those of the fifth embodiment. In addition, the porous concrete layer 100
Since the front end of is a closed end, there is an effect that the overall strength can be increased. If such a configuration is applied to the first embodiment and the front end of the ordinary concrete layer 10 according to the first embodiment is a closed end, a long groove recess-shaped water storage portion 12 is also formed on the front end side, and the entire water storage The function can be improved.

FIG. 13 is a perspective view of a greened concrete block according to the seventh embodiment of the present invention.

In each of the above embodiments, the upper end surface of the porous concrete layer 20, 50, 90, 100 (the protrusion 23
The shape of A, 23B, 23C, 51, 91, 101) is a flat surface or a wavy surface 71.
The shape shown in FIG. That is, in FIG.
The surface of the porous concrete layer 110 is a wavy surface 111 in which concave and convex curved surfaces having a regular cross-sectional shape are continuous in the front-rear direction. The ridge lines of the wavy surface 111 extend in the left-right direction so as to be parallel to each other. Note that the corrugated surface 111 of the porous concrete layer 110 may be a corrugated surface in which uneven curved surfaces having a zigzag cross section are continuous in the front-rear direction. In the seventh embodiment, the wavy surface 111 constitutes a movement suppressing means for the surface layer vegetation base 32.

On the surface side of the porous concrete layer 110, a plurality of recessed pot portions 112 are formed. That is, a total of five cylindrical pot parts 112 are arranged near the four corners of the porous concrete layer 110 and in the center thereof. Porous concrete layer 11
In the 0 pot section 112, a cylindrical box-shaped pot 121 is filled with soil, and a potted plant in which the root system of vegetation is held in the soil is stored and held. That is, the pot part 112 has a cylindrical recessed shape with an open upper end so that the pot 121 for potted plants can be housed therein. The potted plant has the same configuration as the potted plant 80 of the fourth embodiment except that the pots 81 and 121 have different shapes.

The green concrete block according to the seventh embodiment has the same operation and effect as the fourth embodiment. That is, the wavy surface 111 stably holds the soil of the superficial vegetation base 32 and prevents its movement as a movement suppressing means. Further, for example, when the green concrete block of the seventh embodiment is laid on the slope, the ridgeline of the corrugated surface 111 of the porous concrete layer 110 is in the left-right direction (horizontal direction).
By arranging the soil so that it extends in the vertical direction, the vertical movement of the soil of the surface vegetation base 32 is prevented by the corrugated surface 111, and the soil will not be displaced due to the slope of the slope and fall off or collapse. In addition, the linear convex portions of the wavy surface 111 are orthogonal to the flowing direction of rainwater or surface sewage, and resist the pressure from rainwater or surface sewage, in particular, erosion and collapse of the surface vegetation base 32, It is possible to effectively prevent slipping and the like.

Furthermore, even if the surface vegetation base 32 flows out due to erosion caused by rainwater or surface sewage,
Similar to the fourth embodiment, on the surface side of the porous concrete layer 110, only the tops of the convex portions of the corrugated surface 111 are exposed, and the entire surface is not exposed. That is, only the top of the convex portion of the wavy surface 111 appears linearly as a ridge line, and the influence of solar radiation is linearly received at the apex of the convex portion of the wavy surface 111. As a result, the amount of heat entering the porous concrete layer 110 is extremely small, and it is difficult for the interior of the vegetation concrete block to rise in temperature, so that the soil of the surface vegetation base 32 and the lower vegetation base 31 can be prevented from drying.

FIG. 14 is a perspective view schematically showing a greened concrete block according to the eighth embodiment of the present invention.

In the seventh embodiment, the corrugations on the corrugated surface 111 are continuous only in the one-dimensional direction (front-back direction).
However, in the present invention, the corrugated surface of the unevenness may be continuous in the two-dimensional direction (both the front-back direction and the left-right direction).
That is, the conical or pyramidal projections may be scattered in the plane direction to form a wavy surface. Also in this case, the same effect as that of the seventh embodiment is obtained. Specifically, as shown in FIG. 14, dot-shaped convex portions 131a such as cones or pyramids are scattered on the surface of the porous concrete layer 130 in a predetermined arrangement mode to form a flat dot matrix-shaped wavy surface 131. To do. In the eighth embodiment, the corrugated surface 131 is used to form the surface layer substrate 3
2 movement restraining means are configured. Although not shown for simplification, a pot portion is formed at a predetermined position of the porous concrete layer 20 as in the seventh embodiment, and vegetation such as a potted plant is inserted and fixed in the pot portion. It Further, as in the seventh embodiment, the entire surface vegetation base 32 covers the entire corrugated surface 131 on the surface of the porous concrete layer 130.

In the eighth embodiment, as in the seventh embodiment,
A large number of concave portions formed between the convex portions 131a of the wavy surface 131 function as movement suppressing means, stably hold the surface vegetation base 32, and prevent movement of the soil. Further, in the eighth embodiment, the concave portions 1 of the corrugated surface 131 scattered in the plane direction (two-dimensional direction) of the porous concrete layer 130.
31a prevents the surface vegetation base 32 from moving in the plane direction. That is, the dot-shaped convex portions 131a are always present in a direction orthogonal to the flowing direction (horizontal direction) of a flowing structure such as a river as well as the flowing direction (vertical direction) of rainwater or surface sewage. Therefore, even if the vegetation concrete block is laid on an inclined ground such as a slope without paying attention to the top, bottom, left and right, the surface vegetation base 32 will not be displaced due to the inclination and fall off or collapse. In addition, when rainwater or surface sewage flows vertically like normal slopes,
Not only can the corrugated surface 131 effectively prevent the collapse of the surface vegetation base 32, but the corrugated surface 131 also causes the collapse of the surface vegetation base 32 when receiving horizontal running water such as a river bank. Etc. can be effectively prevented. As a result, the vegetative concrete block according to the eighth embodiment has not only the slope including the steep slope as in the seventh embodiment but also the surface vegetation base 32 and the lower vegetation even when laid on a running structure such as a river. The soil of the base 31 can be stably and reliably held.

Even if the surface vegetation base 32 flows out due to erosion due to running water, rain water, or surface sewage, only the tops of the convex portions 131a of the corrugated surface 131 are exposed on the surface side of the porous concrete layer 130. However, the whole is never exposed. That is, the convex portion 1 of the wavy surface 131
Only the top part of 31a appears in a dot shape as an apex, and the influence of solar radiation is received in a dot shape at the apex of the convex portion 131a of the wavy surface 131. As a result, the amount of heat entering the inside of the porous concrete layer 130 is extremely small, and it is difficult for the inside of the vegetation concrete block to rise in temperature, so that the soil of the surface vegetation base 32 and the lower vegetation base 31 can be prevented from drying.

In addition, the dot-shaped convex portion 131a is formed as shown in FIG.
As shown in FIG. 3, when the vegetation base 32 is not arranged in a pure matrix form (matrix form) or in a grid form and is scattered so as to be alternately displaced in the row direction or the column direction,
On the other hand, it is possible to effectively apply the resistance force in both the vertical direction and the horizontal direction. As a result, not only the resistance to vertically flowing water such as rainwater but also the resistance to horizontally flowing water such as rivers can be more effectively achieved.
Can be given to.

The term "regular cross-sectional shape" as used in the present specification is meant to exclude a fine uneven shape that naturally occurs on the surface of the porous concrete layers 20, 110, 130 due to the uneven shape of the coarse aggregate itself. ing. Therefore, as long as it has a cross-sectional shape that exhibits the soil holding effect as described above, it is used in the meaning including other than the above embodiment. That is, as described above, not only the case where the convex portions having the same cross-sectional shape are continuous, but the convex portions having different shapes are continuously arranged to form a wavy surface having a regular cross-sectional shape as a whole. Further, the dimensions of each unevenness may be different. Therefore, any shape and size can be adopted as long as a predetermined surface wave shape can be imparted by a molding die or the like.

FIG. 15 is a sectional view of a greened concrete block according to the ninth embodiment of the present invention.

As shown in FIG. 15, the green concrete block according to the ninth embodiment is obtained by replacing the water retaining sheet 61 of the green concrete block according to the second embodiment with a water impermeable water storage sheet 141. The configuration is similar to that of the second embodiment. The water storage sheet 141 is disposed on the bottom surface side of the pot portion 52, covers the bottom surface and the lower portions of the four side surfaces, and imparts a water blocking function. The inner surface of the water storage sheet 141 forms a water storage part that exhibits the same water storage function as the water storage part 12 of the first embodiment. The water storage sheet 141 is preferably fixed to the inner surface of the pot portion 52 by adhesion or the like from the viewpoint of preventing movement during soil filling. Further, the water storage sheet 141 can be formed into a sheet shape with the same material as the water retention sheet 61, for example. In this case, the water storage sheet 141 exerts the same water retention property as the water retention sheet 61 in addition to the desired water impermeability or water storage function. On the other hand, the water storage sheet 141 may be formed of a sheet material such as a predetermined resin sheet that exhibits a simple water blocking property.

In the ninth embodiment, the water storage sheet 141 constitutes a water storage part similar to the water storage part 12 of the first embodiment, and exhibits the same action and effect. Therefore, as in the first embodiment, the ordinary concrete layer 10 is provided with the protrusions 11A, 11B, 1
It is not necessary to have a beam structure having 1C. As a result, the ordinary concrete layer 40 can be formed into a simple flat plate shape,
The overall configuration and molding operation can be simplified. Of course, it is also possible to apply the configuration of the water storage part by the water storage sheet 141 to the other embodiments such as the fifth or sixth embodiment.

FIG. 16 is a sectional view of a greened concrete block according to the tenth embodiment of the present invention.

In the greened concrete block according to the tenth embodiment, as shown in FIG. 16, the water retaining sheet 61 of the greened concrete block according to the second embodiment is omitted, and the water storage section 151 is arranged on the bottom side of the pot section 52. Is something
Other configurations are similar to those of the second embodiment. Water reservoir 15
Similar to the water storage section 12 of the first embodiment, 1 has a concave shape extending downward from the upper surface of the ordinary concrete layer 40. On the other hand, the water reservoir 151 of the tenth embodiment is formed on a part of the bottom surface of the pot portion 52 (exposed portion of the upper surface of the ordinary concrete layer 40). For example, as shown in FIG. 16, the water storage section 151 has a width narrower than that of the pot section 52 and is smaller than the pot section 52.
Can be arranged at the center in the width direction. In this case, the water storage section 151 may be provided over the entire length of the pot section 52, or may be provided in a part thereof. Also, the pot portion 5
When provided in a part of 2 in the length direction, only one water reservoir 15
1 may be provided, or a plurality of water reservoirs 151 may be provided at intervals. Further, the planar shape of the water storage portion can be any shape such as a circular shape or a rectangular shape.

In the ninth embodiment, the water storage section 151 exerts the same action and effect as the water storage section 12 of the first embodiment.
In addition, by appropriately adjusting the number and shape of the water storage sections 151, the water storage amount can be controlled according to various conditions such as the climate and the environment of the installation site.

FIG. 17 is a sectional view of a greened concrete block according to the eleventh embodiment of the present invention.

The green concrete block of the present invention has the same structure as the porous concrete layer 2 as in the above embodiments.
The ordinary concrete layers 10 and 40 in which 0, 50, 90, 100, 110, and 130 are integrally laminated to form a water-impervious layer that exhibits necessary water impermeability. However, in the present invention, the water shield layer may be provided by a configuration other than this.
For example, in the greened concrete block according to the eleventh embodiment, as shown in FIG. 17, the ordinary concrete layer 40 of the greened concrete block according to the fifth embodiment is omitted, and the entire lower surface (back surface) of the porous concrete layer 90 is shielded. The water sheet 161 is fixed by adhesion or the like. The water shield sheet 161 can be formed of a resin sheet or the like having sufficient strength and durability in addition to the water shield, and constitutes the water shield layer of the present embodiment.

In the eleventh embodiment, the water-blocking sheet 161 functions as a water-blocking layer and exerts a desired effect. Therefore,
Unlike the fifth embodiment, it is not necessary to provide the ordinary concrete layer 40. As a result, it is possible to simplify the construction and molding work of the entire greened concrete block. In addition,
It is of course possible to apply the structure of the water shield layer formed of the water shield sheet 161 to other embodiments such as the sixth embodiment.

FIG. 18 is a sectional view of a greened concrete block according to the twelfth embodiment of the present invention.

The greened concrete block according to the eleventh embodiment relates to a modification of the impermeable layer.
As shown in FIG. 5, the ordinary concrete layer 40 of the green concrete block according to the fifth embodiment is omitted, and the water-impervious layer 171 is configured by the concrete layer that is cast in advance on the laying target surface. That is, in each of the above-described embodiments, the ordinary concrete layers 10 and 40 or the water-blocking sheet 151 as the water-blocking layer are provided for each green concrete block, but in the present embodiment, the entire surface of the laying target surface is normally set in advance. A concrete layer is cast to form an impermeable layer 171, and a greening concrete block composed of a porous concrete layer 90, a lower vegetation base 31, a surface vegetation base 32, and a vegetation 33 is laid on it. That is, the water-impervious layer of the present invention may be integrally provided in each greened concrete block unit, or may be provided in a laying target surface unit or in a unit in which the laying target surface is divided into a plurality of sections.

In the twelfth embodiment, the impermeable layer 171 acts in the same manner as the impermeable layer of each of the above-described embodiments, and exhibits the intended effect. In addition, the water-impervious layer 171 is the same as the sixth embodiment.
Of course, it is possible to apply to other embodiments.

In each of the above-mentioned embodiments, the ordinary concrete layers 10 and 40, the water shield sheet 161, and the water shield layer 171 are provided as the water shield layer in the narrow sense, which is composed of independent members having desired water shield properties. The invention can also be embodied in the case where the water shield layer as an independent member is not provided. For example, when applied to revetment works such as river revetments, a greened concrete block without a water barrier layer is laid directly on the laying surface. As the green concrete block having no such water-impervious layer, the green concrete block obtained by omitting the ordinary concrete layer 40 of the fifth or sixth embodiment can be used. At this time, the water storage parts 141, 151 and the like may be provided as appropriate. Also in this case, the dam body or the like to be laid out exerts a water blocking function due to the original structure and function required as the dam body, and functions as a water blocking layer in a broad sense. Therefore, as a whole, substantially the same actions and effects as the above-mentioned respective embodiments can be achieved.

Furthermore, the present invention can be embodied in a greened concrete block having no water-impervious layer in a narrow sense or in a broad sense. For example, the greened concrete block in which the ordinary concrete layer 40 of the fifth or sixth embodiment is omitted may be laid on the laying surface such as a road slope. At this time, as in the fifth or sixth embodiment, the pot portions 92 and 102 are formed into long groove recesses extending in the left-right direction of the porous concrete layers 90 and 100, and the plurality of pot portions 92 and 102 are formed into the porous concrete layer 90. , 100 arranged side by side at a predetermined interval in the front-rear direction, and a beam structure having the projections 91, 101 between the pots 92, 102 is preferably used. Also in this case, the greened concrete block, except for the water blocking function,
The above-mentioned actions and effects are exhibited.

Also, in this case, as in the fifth embodiment,
It is more preferable to open the front end of the pot portion 92A located at the front end or the rear end of the porous concrete layer 90. In this case, as described in the first embodiment, the desired effect is obtained by the pot portion 92A forming the open end.

Here, in a general porous concrete for vegetation, the dissolved alkali is a problem, so
Porous concrete layer 20, 50, 90, 100, 1
Even in the greening technique of the present invention using 10, 130, it is considered that neutralization treatment for that purpose is required. But,
The greened concrete block of the present invention has a pot portion 25, 25A, 52, 52A, 92, 92A in a porous concrete layer 20, 50, 90, 100, 110, 130.
By providing 102 and 112, it is possible to secure a sufficient amount of soil of the vegetation base necessary for the survival and growth of the vegetation 33 and 83, so that the buffering ability as the original property of the soil acts. As a result, the presence of external alkali does not pose a major problem and the neutralization process is basically unnecessary. Of course, you may perform a neutralization process as needed.

In each of the above embodiments, the coarse aggregate 21 of the porous concrete layers 20, 50, 90, 100, 110, 130 is assumed to be gravel, crushed stone, or the like. However, in the present invention, the coarse aggregate of the porous concrete layer may be formed from a porous inorganic material such as a crushed material of lightweight cellular concrete (ALC).

In this case, the porous inorganic material absorbs a large amount of water in a very short time, but the drying speed is relatively slow.
Therefore, the coarse aggregate itself has a high water retention property, and the water retention capability of the entire porous concrete layer is significantly increased. As a result, it is possible to stably supply water to the vegetation for a long period of time. In addition, since the coarse aggregate is lightweight, the porous concrete layer is also lightweight, which significantly reduces the overall weight.
As a result, transportation from the manufacturing place to the laying place can be easily performed, and the laying work at the laying place becomes simple.

Here, the lightweight cellular concrete (ALC), which is a material of coarse aggregate, has a porosity of 80% or more by volume,
The apparent specific gravity is about 0.5 to 0.6, which is extremely lightweight.
Therefore, it is suitable as a porous inorganic material for coarse aggregate. Further, ALC is shipped and used in large quantities on building wall materials and the like, and can be collected in large quantities as waste at the production stage or construction stage, or after use (after dismantling). Therefore, in addition to the function and effect of the fifth aspect, it is possible to stably supply the raw material of the coarse aggregate and to significantly reduce the raw material cost. Also, discard A
It can greatly contribute to the recycling of LC materials.

The strength of ALC is about 40 in compressive strength.
Since it is kgf / cm2, which is not so large compared to the case of gravel or crushed stone, when it is used as a structural material for river revetments, etc., take strength considerations such as mixing with gravel or crushed stone without using it alone. It is preferable. Also,
Compared with the case of gravel or crushed stone, the specific gravity is small,
Even when it is used for the purpose of being buried in water such as a river bank, it is preferable to consider it by mixing it with gravel or crushed stone. That is, the specific gravity after absorption of water is cement paste and ALC.
Since it is 1.0 or more with water and does not float in water, the flow velocity resistance may decrease, so it is preferable to pay attention to this point.

In addition to ALC, volcanic eruptive rocks (commonly called pumice) are natural substances as the porous inorganic material. However, the use of ALC is preferable from the viewpoint of stable supply of raw materials. Furthermore, when carrying out the present invention, as described above, considering various conditions such as strength, specific gravity, and cost,
As coarse aggregate of porous concrete layer, gravel, crushed stone,
ALC and the like can be used alone or in an appropriate mixture.

As described above, when the coarse aggregate of the porous concrete layer is made of the porous inorganic material, the coarse aggregate of the porous concrete layer may be impregnated with the fertilizer solution. That is, in this case, the coarse aggregate is made of a porous inorganic material such as ALC, and has a property that it absorbs a large amount of water in an extremely short time while the drying speed is relatively slow. Therefore, for example, the greened concrete block after molding may be dipped in a fertilizer solution such as a mixed solution of nitrogen, phosphoric acid, and potassium to impregnate the fertilizer solution into the coarse aggregate to firmly hold the fertilizer component. it can. As a result, it is possible to retain a sufficient amount of nutrients and water such as fertilizer and water necessary for maintaining vegetation. That is, it is possible to form a growth base with a large fertilizing capacity and a sufficient supply amount of nutrients, and it is possible to feed vegetation for a long period without supplementing fertilizer and maintain vegetation for a long period of time. it can. The coarse aggregate may be impregnated with fertilizer by another method other than immersing the porous concrete layer in the fertilizer liquid.

On the other hand, in each of the above embodiments, the vegetation 33,
As 83, the use of herbaceous plants (herbs) is mainly assumed, but in some cases, it is also possible to use woody plants (woody plants) such as vines. In addition, cold or warm type, native plant (local species) or exotic plant (alien species),
Any plant species can be used, regardless of ornamental plants (flowers and flowers). In this case, it is preferable to select the plant species in consideration of various conditions of the place where the greened concrete block is laid and the characteristics of the plant species.

Specifically, the growth environment of the plant species at the laying place, such as slope of slope, insolation, temperature, humidity,
Climate conditions such as wind and rainfall, soil temperature, construction time, etc., and characteristics of the vegetation, such as root system soil consolidation force (fixing force, binding force), environmental adaptability, environment improvement of the growth base by the vegetation itself. Effect, harmony with surrounding environment and landscape, easy availability,
It is preferable to take into consideration the germination power, the viability and the like during the construction period. Environmental adaptability of plants includes cold resistance, heat resistance, shade resistance, moisture resistance, drought resistance, etc.
In particular, it is preferable to select one having excellent drought resistance.
Examples of plant species having excellent drought resistance include sedum mannen grasses and the like. In addition, examples of plants mainly having excellent walkability include arctoseca and turfgrass.

Furthermore, the plant species can be grown and cultivated by sowing or planting, individually or in combination.
When using herbaceous plants as vegetation, for example, ornamental grass, ground cover plants (ground cover plants),
Wildflower etc. can be used. But,
In each of the above embodiments, the porous concrete layer 20,
Pot parts 25, 25A, 52, 52A, 92, 9 partially provided on the surfaces of 50, 90, 100, 110, 130
The soil of the lower vegetation base 31 is held by 2A, 102, 112, and the vegetation 33, 83 is provided on the soil of the lower vegetation base 31 and the surface vegetation base 32. Therefore, vegetation 33,8
3, the porous concrete layers 20, 50, 9
Crawling plants such as ground cover plants are preferably used to cover the entire surface of 0, 100, 110, 130. Although it is possible to use annual plants,
Also in this case, it is preferable to mainly mix perennial plants and appropriately mix annual plants from the viewpoint of permanent greening. Also,
Fertilizer trees such as root nodule plants or new fertilizer trees may be mixed to fertilize the soil and improve the growth environment.

Nitrogen, phosphoric acid, and potassium are the main fertilizers (nutrients) contained in the soil of the lower vegetation base 31 and the surface vegetation base 32, and the soil 82 in the pots 81 and 121. , Lime, magnesia, iron, manganese,
There are sulfur and boron. The mixing ratio of each component is determined in consideration of the plant species to be used, soil components and the like. In particular, when a porous inorganic material such as ALC is used as the coarse aggregate of the porous concrete layer, nitrogen, phosphoric acid, etc. are taken into consideration in consideration of easiness of dilution when dipping and impregnating the ALC etc. with the fertilizer mixture.
It is preferable that the mixing ratio of potassium is 1: 2: 1.

As the fertilizer, it is preferable to use slow-acting fertilizer or slow-acting fertilizer. This makes it possible to extend the fertilization period, prevent concentration disorders, and enable large-scale fertilization. In addition, with concentration obstacle, inorganic fertilizers such as ammonium sulfate (ammonium sulfate)
It is to raise the salt concentration in the soil and cause damage. As the slow-release fertilizer, for example, a condensate of urea and isobutyraldehyde, which is poorly soluble in water, has a fertilizing effect by hydrolysis IB (IBDU), a condensate of urea and acetaldehyde, which is poorly soluble in water. CDU, which is the substance of
There is ureaform, which is a condensation mixture of urea and formaldehyde.

Furthermore, a coated fertilizer may be used as the fertilizer. The coated fertilizer is intended to slow the fertilizing effect by coating the surface of granular water-soluble fertilizer with a semi-permeable or water-permeable coating substance and gradually eluting the fertilizer components from the pinholes. is there. Also in this case, it becomes possible to apply many fertilizers,
It has the advantages of reducing concentration disorders, adjusting the fertilization period, preventing excessive absorption, and reducing the number of fertilizer applications.

In addition, organic fertilizer such as blur fertilizer and special fertilizer (various composts) can also be used. Furthermore, an organic base material may be used as a growth base together with or instead of the fertilizer. In this case, the fertilizing effect can be moderated and the sustainability can be exhibited.

By the way, the greened concrete block is
In each of the above embodiments, the rectangular plate shape (square plate shape or rectangular plate shape) has been described, but any block shape may be used depending on the installation location. However, it is preferable that the greened concrete block is in the shape of a thin plate (panel shape) from the viewpoint of workability and reduction of installation space. In particular, in the case of renewing an existing concrete retaining wall or the like, when it is laid on the concrete surface or the like, it is preferable to have a panel shape.

When the present invention is carried out, the vegetation 33,
As long as a sufficient amount of soil can be secured for the growth of 83,
Arbitrary number of pot parts 25, 25A, 52, 52A, 9
2,92A, 102,112 can be arrange | positioned in the arbitrary parts of the porous concrete layers 20,50,90,100,110,130. Also, the pot parts 25, 25
The shape of A, 52, 52A, 92, 92A, 102, 112 is, for example, a long groove concave shape as in the first embodiment, or a cylindrical shape having an open upper end as in the seventh embodiment. It can be shaped. Furthermore, the shapes of the pots 81 and 121 when the potted plant 80 is used are also the pot portions 25, 25A, 52, 52A, 92, 92A, 1
Any shape can be used as long as it is a pot shape that can be fitted and fixed to 02, 112.

In the greened concrete block of the present invention, the surface vegetation base 32 may be further covered with a covering sheet made of non-woven fabric or the like to prevent soil from flowing out. For example, the entire surface or a necessary portion of the surface vegetation base 32 of the greened concrete block laid on the laying target surface is covered with the covering sheet and fixed. At this time, the vegetation 33 is exposed to the front surface side, for example, through a notch having a predetermined shape such as a cross formed in an appropriate portion of the cover sheet. Also in this case, by using the creeping vegetation, it is possible to cover the entire surface of the covering sheet with vegetation and complete greening with the passage of time. As a material for the covering sheet, a sheet material made of biodegradable fibers, for example, a sheet material made of fibers such as palm, hemp, and jute can be used.

As the application of the green concrete block of the present invention, as mentioned above, it is fixed so as to cover the soil surface such as cut soil, embankment, and excavated soil as the surface to be laid on the river revetment and various slopes. Can be used for soil greening. In particular, the green concrete blocks of the above-mentioned embodiments are suitable for high water revetments. In addition, it is also possible to use it for greening the existing concrete surface by stacking and fixing it so as to cover the surface of the existing civil engineering structure.

The green concrete blocks of each of the above-described embodiments are explained as completed products in which the lower-layer vegetation base 31, the surface vegetation base 32, and the vegetation 33, 83 are integrally provided. However, the present invention can be embodied in a state before the lower layer vegetation base 31, the surface layer vegetation base 32, and the vegetation 33 and 83 are integrally provided. That is, the ordinary concrete layers 10 and 40 and the porous concrete layer 2 shown in each of the above embodiments
It can also be embodied in the form of a concrete secondary product having a two-layer structure of 0, 50, 90, 100, 110, 130. This concrete secondary product can also be distributed to the market as a component of the above-mentioned green concrete block as a finished product.

[0126]

EFFECTS OF THE INVENTION The green concrete block according to claim 1 forms a growth base having a large fertilizing capacity and a sufficient amount of nutrient supply by virtue of the voids of the porous concrete layer and the pot portion formed by the water storage portion and the opening portion. be able to. Then, it is possible to perform sufficient fertilization and water supply to the vegetation without requiring special maintenance, and to maintain the vegetation for a long period of time. That is, the greened concrete block according to claim 1 basically does not require maintenance and cost for maintaining vegetation after laying, and can reduce the cost for continuous greening. In addition, when applied to running water structures or inundation structures that require high water impermeability such as high water revetments, ordinary concrete layers provide sufficient original flood control functions such as bank protection, bank collapse prevention, and river channel fixation. Can be demonstrated. That is, the greened concrete block according to claim 1 has environmental requirements such as environmental conservation and landscape harmony by maintaining greening through securing a sufficient amount of soil, and has a functional aspect such as a water blocking function against running water or a surface soil erosion prevention function. It is possible to meet the requirements. Further, the water storage function formed between the projections of the ordinary concrete layer can exert a water storage function to increase the water retention capacity of the entire soil in the pot section, thereby providing a better vegetation growth base. it can. On the other hand, the projection of the ordinary concrete layer or the projection of the porous concrete layer that is continuous with the upper end of the water storage section can prevent excess water from remaining in the pot section and causing root rot of vegetation. In particular, even when laid on a slope or slope, it is possible to hold the water that normally flows down and secure a sufficient amount of water retention,
It is possible to provide a good vegetation growth base. Also,
The projecting portion of the beam structure of the porous concrete layer can suppress the amount of incident heat to the soil in the porous concrete layer and the pot portion, and can effectively prevent the soil from drying. Further, the strength can be increased by the beam structure of the ordinary concrete layer and the beam structure of the porous concrete layer.

In addition to the effect of claim 1, the greened concrete block according to claim 2 has a large fertilizing power and a large amount of nutrient supply due to the voids of the porous concrete layer and the plurality of long groove recessed pot portions extending in the left-right direction. Can form a sufficient growth base.

In addition to the effect of claim 1, the greened concrete block according to claim 3 can improve the water retention capacity of the entire soil in the pot portion by a simple means such as a water retention sheet, which leads to a better vegetation. A growth base can be provided, and the work therefor can be easily performed.

In addition to the effect of claim 1, the greened concrete block according to claim 4 can insert and fix the vegetation in a state of being potted, and the planting of the vegetation on the greened concrete block is easy. The productivity and workability can be improved. Further, since the vegetation is cultivated in pots, the cultivating space becomes small and the greenhouse can be used, so that the productivity is good. On the other hand, since the plant roots are covered with a large amount of soil inside the pot, abrupt changes with the soil that is the vegetation base are mitigated,
Changes in the environment at the initial stage of transplantation are reduced, and survival and growth of vegetation can be significantly improved. Further, since the pot is made biodegradable, it is environmentally friendly and does not impair the functions of the soil base and the growth base.

In the greened concrete block according to the fifth aspect, the growth base having a large fertilizing power and a sufficient amount of nutrient supply can be formed by the voids and the pot portion of the porous concrete layer. Then, it is possible to perform sufficient fertilization and water supply to the vegetation without requiring special maintenance, and to maintain the vegetation for a long period of time. That is, the greened concrete block according to claim 5 basically eliminates the need for maintenance and costs for maintaining vegetation after laying, and can reduce the cost for continuous greening. When applied to running water structures or inundated structures that require high water impermeability and strength, such as high water revetments, the porous concrete layer and the water impervious layer on the back side of the structure protect levees, prevent bank collapse and secure river channels. The original flood control functions such as the above can be fully exerted. That is, the greened concrete block according to claim 5 has environmental requirements such as environmental conservation and landscape harmony by maintaining greening through securing a sufficient amount of soil, and functional aspects such as a water-blocking function against running water or a surface soil erosion prevention function. It is possible to meet the requirements. In addition, the water storage function can be exerted by the water storage unit to increase the water retention capacity of the entire soil in the pot unit, and thus it is possible to provide a more favorable vegetation growth base. on the other hand,
By the continuous porous concrete layer at the upper end of the water reservoir,
It is possible to prevent excess water from remaining in the pot and causing root rot of vegetation. In particular, even when it is laid on a slope or an inclined surface, it is possible to normally hold the water flowing down to secure a sufficient water retention amount, and it is possible to provide a good vegetation growth base. In addition, the total amount of soil can be increased by the surface layer vegetation base, and the overall fertilizing power and water holding power can be increased to provide a better vegetation growth base. Further, the movement restraining means can effectively prevent slipping, collapse, erosion, etc. of the soil of the surface vegetation base due to rainwater, surface runoff, river runoff, and the like.

A concrete secondary product according to claim 6 is
When greening is required, a greening concrete block can be configured to form a growth base having a large fertilizing capacity and a sufficient nutrient supply amount in the same manner as the greening concrete block of claim 6. Then, it is possible to perform sufficient fertilization and water supply to the vegetation without requiring special maintenance, and to maintain the vegetation for a long period of time. That is, when the secondary concrete product of claim 6 is used for a green concrete block, maintenance and cost for maintaining vegetation after laying the green concrete block are basically unnecessary and the cost can be reduced. Further, when a greened concrete block using the secondary concrete product of claim 6 is laid on a slope, etc., the porous concrete layer itself can prevent problems such as erosion, collapse and sliding down of the slope itself. .

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a laid state of a greened concrete block according to a first embodiment of the present invention.

FIG. 2 is a plan view of the greened concrete block according to the first embodiment of the present invention, showing a state before the pot is filled with soil.

FIG. 3 is a cross-sectional view taken along line XX of FIG. 2, showing a state where the greened concrete block of FIG. 2 is cut left and right along the length direction of the pot portion.

FIG. 4 is a cross-sectional view taken along the line YY of FIG. 2, showing a state in which the greened concrete block of FIG. 2 is cut back and forth.

5 is a cross-sectional view taken along line ZZ of FIG. 4, showing a state where the greened concrete block of FIG. 4 is cut along the boundary surface between a normal concrete layer and a porous concrete layer.

FIG. 6 is a perspective view of the greened concrete block according to the first embodiment of the present invention, showing a state before the pot portion is filled with soil.

FIG. 7 is a partial cross-sectional view showing the water storage function of the water storage portion of the green concrete block according to the first embodiment.

FIG. 8 is a cross-sectional view of a greened concrete block according to Embodiment 2 of the present invention.

FIG. 9 is a partial cross-sectional view showing a greened concrete block according to Embodiment 3 of the present invention.

FIG. 10 is a perspective view schematically showing a main part of a greened concrete block according to Embodiment 4 of the present invention.

FIG. 11 is a cross-sectional view of a greened concrete block according to Embodiment 5 of the present invention.

FIG. 12 is a cross-sectional view of a greened concrete block according to a sixth embodiment of the present invention.

FIG. 13 is a perspective view of a greened concrete block according to a seventh embodiment of the present invention.

FIG. 14 is a perspective view schematically showing a greened concrete block according to Embodiment 8 of the present invention.

FIG. 15 is a sectional view of a greened concrete block according to a ninth embodiment of the present invention.

FIG. 16 is a cross-sectional view of a greened concrete block according to Embodiment 10 of the present invention.

FIG. 17 is a sectional view of a greened concrete block according to Embodiment 11 of the present invention.

FIG. 18 is a sectional view of a greened concrete block according to Embodiment 12 of the present invention.

[Explanation of symbols]

10, 40 Normal concrete layer (impermeable layer) 11A, 11B, 11C Projection (beam structure) 12, 151 Water storage part, 20, 50, 90, 100, 110, 130 Porous concrete layer 21 Coarse aggregate, 22 Void 23A , 23B, 23C, 51, 91, 101 Projections (beam structure) 25, 25A, 52, 52A, 92, 92A, 102,
112 pot part 31 lower layer vegetation base (soil), 32 surface layer vegetation base (soil) 33,83 vegetation, 61 water retention sheet 71,111,131 wavy surface (movement suppressing means), 81
Pot 141 Water storage sheet (water storage part), 161 Water blocking sheet (water blocking layer) 171 Water blocking layer

Front Page Continuation (72) Inventor Yukio Asano 430 Ebi, Sugiyama Construction Co., Ltd., Masashi-cho, Motosu-gun, Gifu Prefecture (56) References JP-A-8-199529 (JP, A) JP-A-11-1931 (JP, A) JP-A-11-117334 (JP, A) JP-A-11-117260 (JP, A) JP-A-5-295714 (JP, A) JP-A-9-124476 (JP, A) -13447 (JP, U) Japanese Patent Publication 7-56146 (JP, B2) Actual Public Publication 5-5882 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E02B 3/14 301 B32B 13/04 C04B 38/00 301 E02D 17/20 102

Claims (6)

(57) [Claims] 1. A normal concrete layer which is formed into a substantially flat plate having a water blocking property and has a beam structure having a plurality of projections on the upper surface side, and a water blocking water storage part is formed between the projections, A plurality of protrusions corresponding to the plurality of protrusions of the ordinary concrete layer are continuously and integrally laminated on the entire upper surfaces of the plurality of protrusions of the ordinary concrete layer to form a protrusion of the ordinary concrete layer. The porous concrete layer has a beam structure corresponding to the entire shape, and is formed by a porous concrete layer in which openings are formed between the plurality of protrusions, a water storage section of the ordinary concrete layer and openings of the porous concrete layer, and the porous concrete layer A pot portion having a concave shape opening on the surface side of the layer, a soil filled in at least the void of the porous concrete layer and the pot portion, and a root system in the soil A vegetation that retains the water content of the ordinary concrete layer, and the water impermeability of the ordinary concrete layer is imparted with water impermeability by the ordinary concrete layer so that water can be stored in the water reservoir within a range not exceeding the upper end of the water reservoir. The green concrete block, wherein water exceeding the upper end of the water storage section is discharged to the outside through the porous concrete layer. 2. The water storage portion formed between the protrusions of the ordinary concrete layer has a long groove shape extending in the left-right direction of the ordinary concrete layer, and the openings formed between the protrusions of the porous concrete layer are the porous. As a long hole shape extending in the left-right direction of the concrete layer, the pot portion is a long groove recess shape extending in the left-right direction of the ordinary concrete layer and the porous concrete layer, and a plurality of pot portions are the ordinary concrete layer and the porous concrete. The greened concrete block according to claim 1, wherein the layers are arranged side by side at a predetermined interval in the front-rear direction of the layer. 3. The greened concrete block according to claim 1, wherein a water retaining sheet is arranged on the bottom surface of the pot portion. 4. The green concrete block according to claim 1, wherein the vegetation is previously cultivated in a pot made of a biodegradable organic material, and the vegetation is inserted and fixed in the pot portion together with the pot. 5. A porous concrete layer which is laminated on a water-impervious layer having water impermeability, forms voids between coarse aggregates, and has a pot portion having a concave shape opening on the surface side thereof, and at least the porous concrete layer. A layer of voids and soil filled in the pot portion, and vegetation holding a root system in the soil, a water-impervious water storage portion is provided on the bottom side of the pot portion, and the voids of the porous concrete layer and the pot Further, on the soil filled in the section, while further filling the soil constituting the surface vegetation base, the movement suppressing means for suppressing the movement of the surface vegetation base is provided on the upper surface of the porous concrete layer, A green concrete block. 6. A normal concrete layer having a water-impervious, substantially flat plate shape, a beam structure having a plurality of protrusions on the upper surface side, and water-impervious water storage portions formed between the protrusions, A plurality of protrusions corresponding to the plurality of protrusions of the ordinary concrete layer are continuously and integrally laminated on the entire upper surfaces of the plurality of protrusions of the ordinary concrete layer to form a protrusion of the ordinary concrete layer. A porous concrete layer having a beam structure corresponding to the overall shape and having an opening formed between the plurality of protrusions is provided, and the porous portion is formed by the water storage part of the ordinary concrete layer and the opening part of the porous concrete layer. A concrete secondary molded article, characterized in that a pot portion having a concave shape opening on the surface side of the concrete layer is formed.