JP2779433B2 - Greening concrete block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for greening in which moss, grass, and ivy can be directly vegetated on the surface of the concrete block.

[0002]

2. Description of the Related Art In general, in residential land development, road and railway construction, a retaining wall using a concrete block is constructed to prevent a slope from collapsing.
The method of frame construction method of combining blocks in a cross-girder shape and pasting it on an inclined surface, the method of pasting a plate-shaped precast concrete block, and further stacking concrete blocks like stone walls, connecting each block with concrete, There is a stacked block construction method such as a sand block which can withstand the earth pressure in the horizontal direction by the weight of the block.

[0003] Precast concrete products are also used for curbs and paving stones on roads.

On the other hand, in recent years, greening has been promoted to prevent these precast concrete blocks from impairing the surrounding scenery when constructing residential land or constructing roads. It was common to provide a part that can hold vegetation soil on a part of the retaining wall or paving stone surface made of blocks, and plant vegetation on this part. For example, there is a type in which earth and sand is held in a space between lattice-shaped legal frames, and a type in which a pot for holding earth and sand in a terrace shape is provided on a part of a retaining wall.

[0005]

In the conventional method for greening retaining walls, pavement roads and the like using concrete blocks as described above, the concrete color is still exposed on the surface of the block itself, and sufficient greening is achieved. In particular, in the method of covering most of the surface with a block, when this is used on the side slope of the highway,
From the point of view of ergonomics, it is necessary to diffuse light in conjunction with greening, and it is necessary to provide complicated irregularities on the surface of the concrete block.

In view of such a problem, the present invention provides natural greening on the entire surface only by constructing a retaining wall with a precast concrete block or forming a pavement surface in the same manner as in the conventional construction of a retaining wall not considering greening. It is intended to provide a concrete block for greening that can be expressed.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems and achieve the intended object, the gist of the present invention is to use fertilizer and soil material for vegetation and absorb water. The expandable water-absorbing material and the water-soluble binder are mixed, and the greenery aggregate that has been molded and solidified in a granular form is mixed with the granular aggregate for concrete, and the above-mentioned aggregates are covered with a binder for inter-aggregate consolidation. The present invention provides a greening concrete block in which a porous concrete layer connected and solidified while leaving continuous voids is integrally provided on the surface of a precast concrete block main body.

[0008] Examples of the precast concrete block main body include those that form a grid such as a cross-girder, plates that cover slopes and road surfaces, and those that are stacked blocks.

The greening aggregate can contain seeds for planting and fertilizer. In this case, the plant grows only by absorbing water after constructing the base.

As the water-absorbing swelling material, a water-swelling organic substance such as irreversible water-absorbing swelling clay and / or sodium alginate, which expands by absorbing water such as attaparagite and does not shrink even after drying, and / or a polymer made of water absorbing material can be used.

Organic materials and / or water-absorbing polymers can be used for the soil material for vegetation.

As the soil material for vegetation, a mixture of granular materials, powdery materials and fibrous materials composed of organic and / or inorganic substances can be used.

As the granular aggregate for concrete, it is possible to use a granular coarse aggregate such as crushed stone or a mixture of the granular aggregate and the granular fine aggregate.

Further, the mixing ratio of the greening aggregate and the granular aggregate for concrete is preferably 3: 5 to 5: 5 (volume ratio).

[0015]

The porous concrete layer in the greening concrete block of the present invention is formed into a porous concrete shape in which the greening aggregate and the granular aggregate for concrete are both aggregated at the time of molding, and continuous voids are formed between the aggregates. Molded. On the other hand, after the block is laid, the water-soluble binder of the greening aggregate gradually dissolves by absorbing water due to rainfall or the like, and the water-absorbing expanding material absorbs water and tends to expand.
On the other hand, the greening aggregate is covered with a binder for inter-aggregate consolidation, but the surrounding coating is destroyed by the expansion force due to water absorption of the water-absorbing expansive material, and the contents spread into the gaps between the aggregates, Porous concrete composed of granular aggregate for concrete and solidified binder for aggregate is a greenery aggregate composition in which the voids have collapsed and liquid phase conditions, and the overall three-phase distribution is suitable for plant growth Becomes

Further, in the drying period, the water content of the water-absorbing expandable material decreases, and even if the water-absorbing expandable material itself shrinks, the other greening aggregate components remain expanded in the voids, resulting in a large change in the three-phase distribution. Don't come.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1 shows a legal frame block embodying the present invention, in which a porous concrete layer 2 is integrally formed on the surface of a block body 1A molded with ordinary concrete. This is shown in FIG.
The vegetation soil 5 is accommodated in the lattice inside 4 in the same manner as in the prior art.

When the inside of the lattice 4 is closed with a concrete slab block as shown in FIG. 3, use is made of a concrete slab block body 1B having a porous concrete layer 2 integrally formed on its surface as shown in FIG. .

FIG. 4 shows a case in which the present invention is applied to a gravity type building block, in which a porous concrete layer 2 is integrally formed on the surface of a block main body 1C formed of ordinary concrete. As shown in FIG. 5, these are sequentially piled up on the front side of the slope and backed, and cast-in-place concrete 6 is cast between the block main bodies 1C to form a gravity retaining wall 7.

FIG. 6 shows a case where the present invention is applied to a curb of a road. In addition to the exposed surface of the block body 1D,
The porous concrete layer 2 is also integrally formed on the back side buried in the soil. In this case, the back porous concrete layer 2 buried in the soil becomes the root of the plant vegetated on the back soil.

In addition, although not shown in the drawings, the present invention can be used for various concrete blocks such as a flat concrete slab for paving stones.

As shown in FIG. 7, the porous concrete layer 2 of each block described above is composed of concrete granules 11 made of crushed stone, a green planted aggregate 12 and a binder 13 made of cement paste obtained by adding water to Portland cement. The mixture is mixed at a fixed ratio, and has a porous concrete shape in which continuous voids 14 are formed inside. The mixing ratio of the granular aggregate 11 for concrete and the greening aggregate 12 is 7: 3 to 5: 5. The diameter of the aggregates 11 and 12 is 1 m / m to 9 m / m in a normal distribution state.

The composition of the greening aggregate used in the present invention includes the following.

Greening aggregate composition example 1 (many organic substances) Water-absorbing swelling material Water-absorbing swelling clay 15 (volume part) Water-absorbing polymer 2 Soil material and fertilizer Organic substance Peat moss 45 Bark compost 10 Bagasse powder 5 Urea fertilizer 5 Inorganic substance Cerabol powder 10 1 / 2C & C 15 Biocarbon 10 Binder Povar 5 Seed K31F 2 Greening aggregate composition example 2 (Inorganic large amount) Water-absorbing expanding material Water-absorbing expanding clay 15 (capacity part) Water-absorbing polymer 2 Soil material and fertilizer Organic matter peat moss 40 Bagasse powder 5 Urea fertilizer 5 Inorganic vermiculite (grain) 10 Zeolite (grain) 10 Cerabola (grain) 5 1 / 2C & C (grain) 5 Biocarbon 10 Binder Bovar 5 Seed K31F 2 Greening aggregate composition example 3 (Organic binder product) Water-absorbing expansive clay 15 (volume part) Water-absorbing polymer 2 soil materials and fertilizers organic matter peat moss 15 bark compost 10 bagasse powder 10 urea fertilizer 5 inorganic burculite (grain) 5 zeolite (grain) 5 cerabola (grain) 5 biocarbon 10 binder sodium alginate 30 seed K31F 2 coating material poval 5 In the above-mentioned greening aggregate composition example 3, alginic acid-based soda as a binder is a water-soluble organic substance, can be used as a soil material and a fertilizer, and also exerts an effect of a water-absorbing expanding material. In the same composition example 3, the coating material is
Other components were blended, molded into granules, and coated on the surface. This is because sodium alginate used as a binder and a swelling organic substance inhibits solidification of cement.

The porous concrete layer 2 located on the surface of the retaining wall composed of the respective blocks constructed as described above initially has a granular aggregate 11 for concrete and a greenery aggregate 12 as shown in FIG. Are mixed in a fixed ratio, and the two aggregates 11 and 12 form a porous concrete. However, as time passes, the greenery aggregate 11 absorbs water, and the water-absorbing expandable material inside expands. The outer shell of the binder 13 is broken, and the contents are spread in the space 14 as shown in FIG.

[0027]

As described above, the concrete block for greening of the present invention can be used for a greening aggregate obtained by mixing a water-absorbing expansive material that expands by absorbing water into a soil material and solidifying it in a granular form, for concrete such as crushed stone. By integrally forming the porous concrete layer consisting of granular aggregate, the greening aggregate expands and breaks by absorbing water after installation as a retaining wall, and the soil material reaches the details of the voids between the granular aggregate for concrete. Filled, leaving a moderate gas phase, rich in water retention,
And a liquid phase that can obtain a continuous capillary phenomenon will be formed in a continuous state, and after the greening aggregate is broken once, it will not return to the original state even by drying, and the aggregate between the remaining aggregates Since the state of being spread in the void is maintained, the liquid phase condition does not change due to dryness and humidity, and soil conditions favorable for vegetation are permanently maintained.

According to the present invention, the moss, ivy, and even grass grow on the retaining wall of the precast block only by installing the precast block by the same construction method as before, and natural greening is achieved. Done.

On the other hand, even before the growth of these plants, the greening aggregate is broken by water absorption, so that the surface changes from a concrete color to a black-brown color and changes to a color similar to that of natural soil. For this reason, the reflection of sunlight is reduced, and it becomes effective as a retaining wall inclined on the side of the highway.

[Brief description of the drawings]

FIG. 1 is a perspective view of an example in which the present invention is applied to a legal frame block.

FIG. 2 is a cross-sectional view showing an example of retaining wall construction using the same legal frame.

FIG. 3 is a cross-sectional view showing another example of the construction of the retaining wall using the same legal frame.

FIG. 4 is a perspective view of an example in which the present invention is applied to a product block.

FIG. 5 is a sectional view showing an example of retaining wall construction using the same product block.

FIG. 6 is a cross-sectional view when the present invention is applied to a curbstone.

FIG. 7 is a partially enlarged sectional view of a porsula concrete layer.

FIG. 8 is a partially enlarged cross-sectional view of a state after expansion of the greening aggregate of the porous concrete layer.

[Explanation of symbols]

 1A, 1B, 1C, 1D Block body 2 Porous concrete layer 3 Ground surface 4 Inside grid 5 Vegetable soil 6 Cast-in-place concrete 7 Weight retaining wall 11 Granular for concrete 12 Greening aggregate 13 Binder 14 Continuous void

──────────────────────────────────────────────────続 き Continued on the front page (73) Patent holder 591241040 Fuji Concrete Industry Co., Ltd. 3-26-7, Sakai, Musashino-shi, Tokyo (73) Patent holder 000162216 Kyowa Concrete Industry Co., Ltd. 1-8-8 (72) Inventor Yoshio Senju 1-11-7 Higashi Gotanda, Shinagawa-ku, Tokyo Inside Juglas Tokyo Branch (72) Inventor Yuji Nakano 4-35 Kudankita, Chiyoda-ku, Tokyo Light Industry (72) Inventor Toru Masyama 1-6-1 Otemachi, Chiyoda-ku, Tokyo Japan Cement Co., Ltd. (72) Tomiharu Yamamoto 2057 Kayama, Shobu-cho, Minami-Saitama-gun, Saitama (72) Inventor Koji Makino 3-26-7 Sakai, Musashino-shi, Tokyo Inside Fuji Concrete Industry Co., Ltd. (72) Inventor Koji Takazawa Higashi 4-6-19 Kohinata, Bunkyo-ku, Kyoto Kyowa Concrete Industry Co., Ltd. (56) References JP-A-50-161004 (JP, A) JP-A-53-72304 (JP, A) JP-A-1-142132 ( JP, A) JP-A-62-202123 (JP, A) JP-A-53-85802 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 29/02 311 E02D 17 / 20 103

Claims (7)

(57) [Claims] 1. A planting fertilizer and a soil material, a water-absorbing expansive material that expands by absorbing water, and a water-soluble binder are mixed together to form a green-solidified aggregate that is granulated and solidified. A greening concrete block in which a binder for inter-aggregate consolidation is applied to each of the above aggregates, and a porous concrete layer that is solidified while leaving continuous voids therein is integrally provided on the surface of the precast concrete block main body. 2. Fertilizer and soil material for vegetation, a water-absorbing expanding material that expands by absorbing water, a vegetation seed, and a water-soluble binder are mixed to form a green-solidified aggregate that is granulated and solidified into granules for concrete. For greening, a porous concrete layer that is mixed with aggregates, coated with a binder for inter-aggregate bonding on each aggregate, and connected and solidified while leaving continuous voids inside, is integrally provided on the surface of the precast concrete block body. Concrete block. 3. The concrete block for greening according to claim 1, wherein the water-absorbing expansive material is a water-absorbing expansible clay that expands by absorbing water. 4. The greening concrete block according to claim 1, wherein the water-absorbing expandable material is an organic substance that expands by absorbing water. 5. The concrete block for greening according to claim 1, wherein the water-absorbing expandable material is a granular water-absorbing polymer. 6. The greening concrete block according to claim 1, wherein the vegetation soil material is a mixture of a granular material made of organic and / or inorganic material and a fibrous material. 7. The greening material according to claim 1, wherein the granular aggregate for concrete is granular coarse bone such as crushed stone or a mixture of the coarse granular aggregate with the granular coarse aggregate. Concrete block.