JP2007284974A - Soil block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soil block which exhibits appearance excellent in harmony with the natural environment, and has not only water permeability and water retentivity but also fungicidal and moss-proof properties imparted thereto. <P>SOLUTION: The soil block is formed in the following manner. First, a soil-based aggregate 10, a cement-based hardener 11, and bacteria 16 having fungicidal/moss-proof properties imparted thereto are charged in a mixer 12, and sufficiently agitated and mixed, to which a nodulizing agent 14 is added, and further the resultant material is agitated and mixed, to thereby form a slurry mixture 15. The mixture 15 thus obtained is charged into a mold of an oscillating pressing device to be molded into a predetermined shape, and then hardened, to thereby form the soil block. The soil block 1 has a three-dimensional network structure, and therefore it exerts excellent water permeability and water retentivity. Further by the inclusion of the soil-based aggregate 10, the soil block exhibits the appearance excellent in harmony with the natural environment. Furthermore the soil block contains the bacteria 16 having the fungicidal/moss-proof properties, and therefore it can exert excellent fungicidal and moss-proof properties over a long period of time after construction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a soil block that has both water permeability and water retention and also has antifungal properties.

  Permeable blocks used as paving materials for sidewalks, walkways in parks, parking lots, etc. are conventionally formed by solidifying stone-based aggregates such as quarrying and sand with solidifying materials such as cement and synthetic resin Yes. Conventional water-permeable blocks generally have a porous structure having a large number of pores inside, but have drawbacks such that the block surface is slippery and the walking feeling is poor.

  Then, this inventor has proposed the water-permeable block formed by solidifying the mixture containing a cement-type solidification material, glass powder, and an aggregating agent (for example, refer patent document 1).

JP 2002-29809 A

  Since the conventional water-permeable block is a concrete product, it has an inorganic and cold impression and is inferior in appearance. In particular, concrete products placed in places where external harmony with the natural environment is required are often unfamiliar with the surrounding scenery and give a sense of incongruity. Also, when laid on a place where people walk, such as sidewalks, the feeling of walking is often influenced by the impression received through the pavement surface, so conventional permeable blocks are hard and difficult to walk. Giving. Furthermore, since the conventional water permeable block has a porous structure, it may retain moisture for a long period of time, and mold or moss may grow on its surface. Such a situation is the same in the case of the water-permeable block described in Patent Document 1.

  The problem to be solved by the present invention is to provide a soil block that has an appearance excellent in harmony with the natural environment, has water permeability and water retention, and also has mold prevention and moss prevention properties. It is in.

  The soil block of the present invention comprises a mixture containing at least one of cement-based solidified material, cement, slaked lime, soil-based aggregate, aggregating agent, and bacteria having antifungal and anti-moss properties. It is characterized by being formed by solidification. With such a configuration, in the mixture containing one or more of cementitious solidifying material, cement, slaked lime, soil aggregate, and aggregating agent, the action of ions contained in the aggregating agent Since one or more of cementitious solidified material, cement, and slaked lime and particles of soil-based aggregate form a three-dimensional aggregate structure, continuous voids are generated. Therefore, by solidifying these mixtures, a block having both water permeability and water retention can be obtained. In addition, by including an earth-based aggregate, a unique appearance, color tone, and texture similar to natural soil are exhibited, so that an appearance with excellent harmony with the natural environment can be obtained. Furthermore, since it contains bacteria having fungicidal and moss-proofing properties, it exhibits mold-proofing and moss-proofing properties over a long period of time after construction.

  In addition, the earth-based aggregate contained in the soil block of the present invention is a main material that forms a block having a fixed shape, and the aggregating agent converts the particles of the earth-based aggregate and the cement-based solidified material into a three-dimensional aggregate structure. The cement-based solidifying material, cement, and slaked lime each act to solidify the aggregate structure formed by the aggregate agent to a strength that is not destroyed by external force. The cement-based solidifying material, cement, and slaked lime are preferably used in accordance with the type of soil-based aggregate, the use of the soil block, and the like, and two or more can be used in combination.

  Here, it is preferable to use one or more of Bacillus sp., Bacillus subtilis, and Bacillus thrugenesis as the bacteria. Since these bacteria do not lose their antifungal and moss-proofing effects even in the constituents of the soil block, they can maintain the antifungal and moss-proofing properties for a long time.

  On the other hand, as the earth-based aggregate, one or more of sandy soil, clay and sludge can be used. If sandy soil or clay is used, a block having the unique texture of these materials can be formed. Moreover, if sludge is used, waste can be effectively utilized.

  Further, as the aggregating agent, a relatively strong aggregate structure is formed by using a polymer compound containing a complex of magnesium salt of acrylic acid / dimethylaminoethyl methacrylate copolymer and polyethyleneimine. be able to.

  According to the present invention, it is possible to provide a soil block having an appearance excellent in harmony with the natural environment, water permeability and water retention, and also having mold resistance and moss resistance.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a part of a manufacturing process of a soil block according to an embodiment of the present invention, FIG. 2 is a perspective view showing the soil block according to an embodiment of the present invention, and FIG. 3 is a soil block shown in FIG. It is a vertical sectional view which shows an example of the pavement structure formed using.

  As shown in FIG. 1, earth-based aggregate 10, cement-based solidified material 11, and fungi-resistant moss 16 are put into a mixer 12 and sufficiently stirred and mixed. The mixer 12 may be a general mixer having a stirring drive mechanism using a motor 13 or the like. When the earth-based aggregate 10 and the cement-based solidified material 11 are mixed evenly, the aggregating agent 14 is added, and the mixture 15 is further stirred and kneaded to form a slurry-like mixture 15. The mixture 15 thus obtained is put into a mold of a vibration press device (not shown), formed into a predetermined shape, and then solidified.

  In the mixture 15 put in a mold (not shown), the aggregates of the aggregated agent 14 cause the particle groups such as the earth-based aggregate 10 and the cement-based solidified material 11 to bond to each other. A three-dimensional network structure is formed while agglomerating, and in this process, bonding and connection further progress to form porous coarse particles having large and small gaps, which are solidified through a curing process. Accordingly, when the mixture 15 in the mold (not shown) is sufficiently solidified and then removed from the mold, the soil block 1 as shown in FIG. 2 is completed.

  Since the soil block 1 formed through such a process has a three-dimensional network structure, it has a function of efficiently absorbing and permeating moisture by continuous voids existing in the three-dimensional network structure. Resulting in excellent water permeability and water retention. Further, since the soil block 1 includes the earth-based aggregate 10, the soil block 1 exhibits an appearance, a color tone, and a texture similar to natural soil, and thus exhibits an appearance that is excellent in harmony with the natural environment. Furthermore, since it contains the fungi 16 having antifungal properties and anti-moss properties, it exhibits excellent anti-mold properties and anti-moss properties over a long period of time after construction. In addition, the fungi- and moss-proofing bacteria 16 also have the effect of degrading nearby odors and purifying water quality, so that the effects of reducing bad odors and purifying the surrounding environment are also obtained. be able to.

  The soil block 1 shown in FIG. 2 has a rectangular parallelepiped shape having a length of 20 cm, a width of 10 cm, and a height of 6 cm. However, the shape and size are not limited to this, and the uses thereof are various. The soil block 1 can be used as a construction material having a pavement structure as shown in FIG. In the pavement structure shown in FIG. 3, a roadbed 3 is formed by laying a crusher run on the roadbed 2, a cushion sand layer 4 is laid on the upper surface of the roadbed 3, and a plurality of cushion sand layers 4 are further formed on the upper surface of the cushion sand layer 4. It is formed by arranging soil blocks 1.

  Rainwater that has fallen on the pavement surface is quickly absorbed into the soil block 1 and is retained by continuous voids existing in the three-dimensional network structure, and rainwater that cannot be retained can penetrate downward. A pavement structure having a good balance between water permeability and water retention can be formed. Moreover, since the appearance, color tone, and texture similar to natural soil are expressed by including the earth-based aggregate 10, an appearance that is excellent in harmony with the natural environment can be obtained. Furthermore, in a period of high temperature such as summer, the moisture retained in the soil block 1 evaporates from the surface, and the heat of vaporization is taken away at that time, so that the temperature increase of the pavement portion can be suppressed. For this reason, it is also effective in preventing the so-called heat island phenomenon.

  On the other hand, the fungi-proof and moss-proof bacteria 16 contained in the soil block 1 have the action of decomposing odors in the vicinity and purifying the water quality. It is also possible to obtain effects such as odor mitigation and environmental purification near the site where 1 is laid. In addition, as shown in FIG. 3, it is desirable to fill the gap 5 between the soil blocks 1 adjacent in the horizontal direction with a joint material such as sand, for example.

  The composition of the mixture 15 formed in the mixing step shown in FIG. 1 is not particularly limited, but in this embodiment, sandy soil is used as the earth-based aggregate 10 and blast furnace cement is used as the cement-based solidifying material 11. Used as the aggregating agent 14 "Brand name: GB-2000" of Global Research Institute, Ltd., and as bacteria 16, bacteria containing Bacillus spuricas, Bacillus subtilis, Bacillus turgenises (stocks) When using the company's Big Bio powdery bacteria, a strong aggregate structure was formed, and excellent antifungal and anti-moss properties were obtained. “GB-2000” is a polymer compound composed of a composite of a magnesium salt of acrylic acid / dimethylaminoethyl methacrylate copolymer and polyethyleneimine. “GB-2000” can be used as a stock solution or in an aqueous solution.

In this embodiment, the mixing ratio of each component constituting the mixture 15 is as follows, but is not limited to this, so the use of the soil block 1, the type of soil-based aggregate 10, properties, etc. Can be changed by.
Earth-based aggregate 10 (sandy soil): 1000 kg to 1500 kg
Blast furnace cement: 100kg to 200kg
Aggregating agent 14 (stock solution of GB-2000): 1 liter to 10 liters Bacteria 16 (Big Bio powdered bacteria): 1 kg to 100 kg
Water: Appropriate amount (adjustment amount is adjusted while confirming the hardness and fluidity of the mixture 15)

  In the present embodiment, the properties and applications of the soil block 1 formed by molding and solidifying the mixture 15 have been described, but the slurry-like mixture 15 can be directly placed on the ground, etc. This makes it possible to form a pavement surface or a sidewalk for grass prevention purposes. Further, when forming the mixture 15, it is possible to add a fiber material such as a plant or resin, and if the mixture 15 mixed with the fiber material is molded and solidified through the same steps as described above, The strength of the block 1 can be increased.

  The soil block of the present invention can be widely used as pavement materials for sidewalks, parking lots, river revetment works and slope protection works, and laying materials for grass prevention purposes.

It is a figure which shows a part of manufacturing process of the soil block which is embodiment of this invention. It is a perspective view which shows the soil block which is embodiment of this invention. It is a vertical sectional view showing an example of a pavement structure formed using the soil block shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Soil block 2 Subgrade 3 Subbase 4 Cushion sand layer 5 Crevice 10 Earth system aggregate 11 Cement system solidification material 12 Mixer 13 Motor 14 Aggregating agent 15 Mixture 16 Bacteria

Claims (4)

  It is formed by solidifying a mixture containing at least one of cement-based solidifying material, cement, slaked lime, earth-based aggregate, aggregating agent, and fungi- and moss-proofing bacteria. A featured soil block.   The soil block according to claim 1, wherein at least one of Bacillus sp., Bacillus subtilis, and Bacillus thrugenesis is used as the bacteria.   The soil block according to claim 1 or 2, wherein at least one of sandy soil, clay, and sludge is used as the soil-based aggregate.   The soil block according to any one of claims 1 to 3, wherein a polymer compound including a complex of a magnesium salt of acrylic acid / dimethylaminoethyl methacrylate copolymer and polyethyleneimine is used as the aggregating agent.

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