JP2006241700A - Soil block - Google Patents

Abstract

An object of the present invention is to provide a soil block which has both water permeability and water retention, has a good appearance, and is excellent in harmony with the natural environment.
A soil-like aggregate and a cement-based solidified material 11 are put into a mixer 12 and sufficiently agitated and mixed. Then, an aggregating agent 14 is added, and further agitated and kneaded to form a slurry mixture. 15 is formed, and the mixture 15 is put into a mold of a vibration press device and molded into a predetermined shape, and then solidified to form a soil block. Due to the action of ions contained in the aggregating agent, the earth-based aggregate 10 and the cement-based solidified material 11 particles form a three-dimensional aggregated structure, and continuous voids are generated, so that the mixture 15 is solidified. By doing so, it is possible to obtain a soil block having a balance between water permeability and water retention and having a natural appearance.
[Selection] Figure 1

Description

  The present invention relates to a soil block having both water permeability and water retention.

  Permeable blocks used as pavement materials for sidewalks, walkways in parks, parking lots, etc. are conventionally formed by solidifying stone-based aggregates such as crushed stone and sand with a solidifying material such as cement or synthetic resin Yes. A conventional water-permeable block generally has a porous structure having a large number of pores inside, but 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 glass powder, a cement-type solidification material, and an aggregating agent. (For example, refer to Patent Document 1).

JP 2002-29809 A

  Since the conventional water permeable block is a concrete product, it tends to give 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, in places where people walk, such as sidewalks, the feeling of walking may be affected by the visual impression from the pavement surface, and the conventional water-permeable blocks give a feeling that it is hard and difficult to walk. . 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 having both water permeability and water retention, good appearance, and excellent harmony with the natural environment.

  The soil block of the present invention is characterized in that it is formed by solidifying a mixture containing at least one of a cement-based solidifying material, cement, and slaked lime, a soil-based aggregate, and an aggregating agent. 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 specific appearance, color tone, and texture similar to natural soil are exhibited, so that the appearance is good and the harmony with the natural environment is also excellent.

  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, one or more of sandy soil, clay, and sludge can be used as the earth-based aggregate. 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, a soil block having both water permeability and water retention, good appearance, and excellent harmony with the natural environment can be obtained.

  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, an earth-based aggregate 10 and a cement-based solidified material 11 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. In addition, since the soil block 1 includes the earth-based aggregate 10, it exhibits an appearance, a color tone, and a texture similar to natural soil, so that the appearance is good and the harmony with the natural environment is also excellent. .

  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. In addition, by including the earth-based aggregate 10, the appearance, color tone, and texture similar to natural soil are expressed, so that the appearance is good and the harmony with the natural environment is also excellent. Furthermore, since the water | moisture content currently hold | maintained in the soil block 1 evaporates from the surface at the time of high temperature, such as summer, and takes away heat of vaporization in that case, the temperature rise of a pavement part can be suppressed. For this reason, it is also effective in preventing the so-called heat island phenomenon. In addition, as shown in FIG. 3, the gap | interval 5 between the soil blocks 1 adjacent to a horizontal direction is filled with joint materials, 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 the present embodiment, sandy soil is used as the earth-based aggregate 10, and Sumitomo Osaka is used as the cement-based solidifying material 11. When using “Product name: Toughlock 3E (TL-3E)” of Cement Co., Ltd. and “Product name: GB-2000” of Global Laboratories Ltd. as the aggregating agent 14, a strong aggregate A structure could be formed. “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
Cement-based solidifying material 11 (TL-3E): 100 kg to 200 kg
Aggregating agent 14 (stock solution of GB-2000): 1 liter to 10 liters Water: appropriate amount (addition amount is adjusted while confirming the hardness and fluidity of the mixture 15)

  In the present embodiment, the nature and use of the soil block 1 formed by molding and solidifying the mixture 15 has been described, but the slurry-like mixture 15 can be directly placed on the ground, etc. As a result, a paved surface or a sidewalk for grass prevention purposes can be formed. Moreover, when forming the mixture 15, it is possible to add short fibers such as plants and resins, and if the mixture 15 mixed with the short fibers 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

Claims (3)

  A soil block formed by solidifying a mixture containing at least one of a cement-based solidifying material, cement, and slaked lime, an earth-based aggregate, and an aggregating agent.   The soil block according to claim 1, wherein at least one of sandy soil, clay and sludge is used as the soil-based aggregate.   The soil block according to claim 1 or 2, wherein a polymer compound containing a complex of a magnesium salt of acrylic acid / dimethylaminoethyl methacrylate copolymer and polyethyleneimine is used as the aggregating agent.

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