JP2007146438A - Paving stone block - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paving stone block capable of preventing the exhaustion of groundwater and restraining acid rain from percolating under the ground. <P>SOLUTION: The paving stone block is solidified by adding blast furnace slag to iron and steel slag containing at least a calcium hydrate as a component, and kneading them with water. The paving stone blocks with water permeability are laid with no gap in such a manner that side surfaces 3a of respective lower block parts 3 abut on each other, so that a filling space for greening can be formed around an upper block part 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a paving stone block used for paving roads, shoulders, parking lots, and the like.

  Conventionally, when paving stone blocks are used when paving roads, shoulders, parking lots, etc., concrete paving stone blocks molded into concrete shapes with concrete materials, for example, by laying materials, or by cutting stone materials Often used is a paved stone block or the like (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 5-79004 (2nd page, FIG. 3)

  In recent years, the depletion of groundwater due to asphalt pavement, etc. has become a problem, so it is possible to infiltrate rainwater underground by laying pavement blocks with water permeability when paving roads, shoulders, parking lots, etc. However, on the other hand, acid rain penetrates underground, causing acidification of land water, soil alteration, forest death, and adverse effects on ecosystems.

  This invention was made paying attention to such a problem, and it aims at providing the pavement block which can control that acid rain penetrates underground while preventing the depletion of groundwater. .

In order to solve the above-mentioned problem, the paving stone block according to claim 1 of the present invention,
The steel slag containing at least calcium hydroxide as a component is solidified by kneading with water and molded into a predetermined shape, and has water permeability.
According to this feature, the water permeability does not prevent the penetration of rainwater into the ground, and especially when acidic rain penetrates the pavement block, calcium hydroxide contained in steel slag. Therefore, it is possible to prevent land water acidification, soil alteration, forest death, adverse effects on the ecosystem, and the like.

The paving stone block according to claim 2 of the present invention is the paving stone block according to claim 1,
Along with the steel slag, waste tiles crushed into a predetermined shape are mixed.
According to this feature, waste tiles can be used together with steel slag as a recycled material constituting the block.

The paving stone block according to claim 3 of the present invention is the paving stone block according to claim 1 or 2,
It consists of a higher-order block part and a lower-order block part wider than the higher-order block part, and a step is formed at least partially between the side face of the higher-order block part and the side face of the lower-order block part. It is characterized by.
According to this feature, when laying pavement blocks adjacent to each other, when the side surfaces of the lower block portions of the adjacent blocks are brought into contact with each other, the upper portions of the adjacent pavement blocks by the stepped portion of each block Since a space is formed between the side surfaces of the block, this prevents the fingers from being pinched between adjacent blocks when laying and gripping the upper block by hand. be able to.

The paving stone block according to claim 4 of the present invention is the paving stone block according to claim 3,
An engaging portion that engages with an engaged portion formed on a side surface of another adjacent pavement block at the time of laying is formed on the side surface of the lower block portion.
According to this feature, not only positioning can be easily performed, but also the adjacently arranged blocks are strongly connected to each other, so that displacement in the left-right direction is effectively prevented.

The paving stone block according to claim 5 of the present invention is the paving stone block according to claim 3 or 4,
Guiding means for guiding a person or a vehicle is provided on the upper surface of the upper block portion.
According to this feature, the upper means of the upper block part that constitutes a part of the pavement surface is provided with guidance means, so that it can function as a guidance sign for people and cars, as well as each pavement at the time of laying By appropriately changing the arrangement and orientation of the blocks, the guidance content such as the guidance direction can be easily changed according to the situation.

The paving stone block according to claim 6 of the present invention is the paving stone block according to any one of claims 3 to 5,
When a plurality of pavement blocks are arranged adjacent to each other, a space portion in which embankment and an irrigation hose connected to a predetermined water supply source can be embedded in the embankment is formed between upper block portions of adjacent pavement blocks. The step portion is formed on the surface.
According to this feature, it is possible to fill the space formed between the upper block portions and green the pavement surface, and to bury the irrigation hose, facilitating water supply to the plant, for example, in summer Thus, the effect of cooling the temperature on the pavement surface by the heat of vaporization generated by the transpiration is obtained.

  Examples of the present invention will be described below.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a perspective view showing a pavement block 1 as an embodiment of the present invention, and FIG. 2 is a bottom side view of the pavement block of FIG. FIG. 3 is a cross-sectional view taken along line AA of FIG. 1, FIG. 4 is a longitudinally broken perspective view showing the paving stone block of FIG. 1, and FIG. 5 is a laying state of the paving stone block. It is a figure which shows an example.

  As shown in FIG. 1, a paving stone block 1 as an embodiment of the present invention is a steel slag hydrated solid formed mainly by kneading steel slag with water as will be described later. The unit 2 and the lower block unit 3 disposed below the upper block unit 2 and having a larger width dimension than the upper block unit 2 are integrally configured.

  First, the shape will be described in detail. As shown in FIGS. 1 to 3, the upper block portion 2 has a rectangular (square in this embodiment) upper surface 2 a that forms a paved surface when laid, and has a side of about 8 cm. It is formed in a rectangular parallelepiped having a height of about 5 cm, and is formed in a size that can be grasped with one hand, as shown in FIG.

  The lower block portion 3 is also formed in a rectangular parallelepiped shape (square in this embodiment) having a side of about 12 cm and a height of about 5 cm, and has a width that is wider than the length of one side of the upper surface 2a. is doing. That is, a step 4 having a width of 2 cm is formed in a frame shape over the entire circumference of the upper block 2 between the four side 2b of the upper block 2 and the four side 3a of the lower block 3. ing. In addition, the side surfaces of the upper block unit 2 and the lower block unit 3 are inclined surfaces that slightly incline outward from the upper end toward the lower end.

  As shown in FIG. 2, among the four side surfaces 3 a in the lower block portion 3, one of the two side surfaces 3 a adjacent to each other is provided with a convex portion 5 as an engaging portion projecting in the vertical direction. The other two side surfaces 3a are similarly provided with concave portions 6 as engaging portions in the vertical direction. When the paving stone block 1 is laid, the two convex portions 5 in the paving stone block 1 are The pavement block 1 is adjacent to the pavement block 1, and the two recesses 6 in the pavement block 1 are adjacent to the pavement block 1. The convex part 5 formed in the lower block part 3 of 1 is fitted.

  Due to the fitting action of the convex portion 5 and the concave portion 6, positioning at the time of laying is facilitated, and positional displacement when a load is applied to the pavement block 1 is prevented. In addition, since the convex part 5 and the recessed part 6 as these engaging parts are formed over the up-and-down width (height) direction in the side surface 3a, when changing height with the paving stone block 1 arrange | positioned adjacently at the time of laying ( The relative position in the vertical direction is not restricted in response to the laying on the slope.

  As shown in FIG. 2, a cross-shaped groove 8 is recessed on the bottom surface 7 (the lower surface of the lower block portion 3), and a load in the left-right direction is applied to the laid pavement block 1. When added, the soil enters into the groove 8 and becomes a resistance, thereby preventing the displacement in the left-right direction.

  The paving stone block 1 in this embodiment configured as described above is a steel slag generated in the iron making process of steel production. After blast furnace slag (slag generated in the iron making process of steel production is rapidly cooled and atomized by water, It consists of a hydrated solidified body of steel slag obtained by adding (fine powder obtained by drying and fine pulverization), mixing with water and solidifying.

  Specifically, in this embodiment, blast furnace slag is added to steel slag, which is a recycled material, and waste tile 9 (see FIG. 4) that has been crushed to a size of about 3 cm or less is put into a mold together with water. It is formed into the above shape by mixing and vibration-pressing this. When solidifying, granulated blast furnace slag (recycled blast furnace slag produced in the steelmaking process) and fly ash (pulverized coal generated in a pulverized coal combustion boiler) By adding and adding an alkali stimulating material such as slaked lime, curing is promoted, production time can be shortened, and strength can be increased.

  Further, as described above, the paving stone block 1 in the present embodiment has a substantially mountain shape from the upper block portion 2 and the lower block portion 3 having a larger width dimension than the upper block portion 2, and therefore, at the time of molding, The paving stone block 1 is molded in a state of being inverted from top to bottom (the state shown in FIG. 2). Therefore, since the opening of the recess (the part into which the steel slag is poured) that is recessed in the upper surface of the mold (not shown) used for molding is wider than the vicinity of the bottom, it is easy to throw in the waste tile 9 during molding. It has become.

  Further, for example, by molding using granular steel slag of about 1 to 5 mm, a large number of small pores are generated between the granular bodies in the paving stone block 1 after solidification, thereby forming a porous material. It will have water permeability and water retention.

  The paving stone block 1, which is a hydrated solidified body of steel slag mainly composed of steel slag, not only can obtain almost the same strength as ordinary concrete, but also effectively reduces the amount of carbon dioxide generated during production. Can be reduced. Moreover, since steel slag and the said additive (blast furnace slag, blast furnace granulated slag, fly ash, slaked lime) are recycling materials, they can be manufactured relatively inexpensively.

By forming the paving stone block 1 using steel slag as the main material in this way, calcium hydroxide {(Ca (OH) ₂ ), hereinafter referred to as slaked lime} is contained as a component, and therefore, in the laid state, the paving stone block 1 Since rainwater that has penetrated into 1 is neutralized by the components of steel slag, acid rain, etc. penetrates into the ground, causing land water acidification, soil alteration, forest death, and ecosystems. Giving is prevented.

  Further, for example, by mixing waste tile 9 crushed to a size of about 3 cm or less together with steel slag, after molding, for example, the upper surface 2a that becomes a paved surface is thinly cut or cut (sliced) to about 1 mm. By removing the thickness, as shown in FIG. 4, the waste tile 9 is exposed on the upper surface 2 a, so that a pattern of the waste tile 9 is formed on the upper surface 2 a serving as a paved surface. In particular, when the waste tile 9 is colored, the color of the waste tile 9 is exposed on the paved surface, and the appearance appearance is improved.

  In particular, as shown in FIG. 5, the upper surface 2a constitutes a part of the paved surface in a state in which the paving stone block 1 is laid, but is scattered at predetermined intervals, for example, a plurality of paving stone blocks arranged. 1, for example, by coloring the upper surface 2a of a predetermined paving stone block 1 to an appropriate color (for example, white, yellow, etc.), a guide sign for guiding a person, a vehicle, or the like by the plural upper surfaces 2a that are scattered ( It will also function as a sign). Furthermore, since the pavement surface is configured by arranging a plurality of pavement blocks 1 adjacent to each other, by changing the arrangement and direction of each pavement block 1 appropriately at the time of laying, the guidance contents such as the guidance direction can be changed to the situation. It can easily be changed accordingly.

  In the present embodiment, a colored surface is applied to the upper surface 2a of the pavement block 1 as an example of a guiding means for guiding a person or a vehicle. For example, an arrow indicating a guiding direction, a parking position are provided. Numbers, characters, etc., marks, inscriptions, and marking portions formed by making the shape of the upper surface 2a circular or hemispherically raised may be applied. Furthermore, such a guide sign may be constituted by the upper surfaces 2a of the plurality of paving stone blocks 1 appropriately provided with guiding means, or may be constituted by the upper surface 2a of the single paving stone block 1. Also good.

  The waste tile 9 is difficult to be pulverized into powder, and in recent years, disposal as a waste material has become a problem. Therefore, the crushed waste tile 9 is part of the material for the paving stone block 1. Can be used effectively.

  Next, an example of laying the paving stone block 1 will be described with reference to FIGS. As shown in FIG. 1 and FIG. 3, the pavement block 1 of this embodiment fits the convex portion 5 formed on the two side surfaces 3 a of the lower block portion 3 into the concave portion 6 of another adjacent pavement block 1. And it arrange | positions so that the convex part 5 of the other adjacent pavement block 1 may fit in the recessed part 6 formed in the other two side surface 3a.

  When the side surfaces 3a and 3a are disposed adjacent to each other, the side surfaces 2a and 2a of the adjacent upper block portions 2 and 2 are between the side surface 2b of the upper block portion 2 and the side surface 3a of the lower block portion 3. Since a space of a predetermined width is formed by the stepped portion 4 formed between them, as shown in FIG. 3 in particular, the upper block portion 2 is laid without any gap next to the other pavement block 1 with one hand held. When laying, there is no danger of other paving stone blocks 1 getting in the way when placing, and there is no danger of hands getting caught between paving stone blocks 1 and 1 when laying without gaps, and laying safely and easily Can do.

  After laying, as shown in FIG. 3, pavement is carried out by pouring soil into the space formed around each upper block 2 and backfilling until the soil surface and the upper surface 2a are substantially at the same level. A surface is formed. The pavement surface is constituted by a soil surface around each upper block portion 2 and an upper surface 2a exposed between the soil surfaces. The weight of a person or a car is mainly applied to the upper surface 2a of the pavement block 1. It will be received at.

  Thus, in the paving stone block 1 of this embodiment, the side surfaces 3a are in contact with each other and are easily arranged without forming joints or the like between the paving stone blocks 1 and 1 simply by arranging a plurality of them without gaps. In addition, when arranging by hand, fingers are not sandwiched between the other paving stone blocks 1, so that even a skilled person can easily perform the construction.

  Further, since it has water permeability, rainwater penetration into the ground is not completely hindered, so that it is possible to prevent the depletion of groundwater and the like. Since it is neutralized by the calcium hydroxide contained in the slag, it prevents acidification of land water, soil alteration, forest death, and adverse effects on the ecosystem.

  In addition, as shown in FIG. 5, since the weight of people, cars, etc. is mainly received by the upper surface 2 a of the pavement block 1, embankment is carried out in the space portion formed around each upper block portion 2, By planting this, the greening of the pavement surface becomes possible (see FIG. 6). In this case, this embankment is covered with the side surface 2b and the step part 4 (upper surface of the lower block part 3) of the upper block part 2, so that rainwater or the like is not rapidly permeated into the ground, and the paving stone block Since the water is temporarily retained by 1, water can be supplied little by little to the plant without frequent water supply. Furthermore, even if the banking is dried after fine weather, the water that has penetrated and retained in the pavement block 1 is slowly supplied to the plant, so that planting maintenance becomes easy.

  Further, when the pavement block 1 is laid on an inclined land, for example, each pavement block 1 that is filled with soil or rainwater that is retained in the space formed around each upper block 2 is scattered. It is effectively retained by the upper block unit 2.

  Further, as shown in FIGS. 5 and 6, for example, by laying a porous water supply hose 11 or the like connected to a predetermined water supply source in a space formed around each upper block 2. In addition, water can be easily supplied to the plants planted on the embankment. In this case, since the water supply hose 11 can be laid on the stepped portion 4 of each paving stone block 1, the water that has oozed from the surface of the water supply hose 11 does not rapidly permeate the basement and has a predetermined depth from the soil surface. The water supply hose 11 can be easily laid at the position. Moreover, since the water supply hose 11 is laid below the upper surface 2a of each paving stone block 1, it is not clogged or damaged due to the load of a person, a vehicle, etc. By forming the step part 4 over the entire periphery, such a water supply hose 11 can be laid in the vertical direction or the horizontal direction, and the water supply hose 11 is set in a lateral direction with respect to the inclined surface in an inclined place. By laying, the upper block portion 2 arranged on the lower inclined side prevents the water supply hose 11 from being displaced.

  In addition, water supplied from such a water supply hose 11 does not rapidly penetrate into the ground, but is retained near the ground surface by the paving stone block 1 and also penetrates and retains water in the paving stone block 1 during drying. Since the supplied water is supplied slowly, frequent water supply and maintenance are not required.

  Furthermore, by supplying water via the water supply hose 11 or the like to the embankment put into the pavement block 1 or the space formed around each upper block portion 2, for example, in the pavement block 1 or embankment in summer The effect of cooling the temperature on the pavement surface is obtained by the heat of vaporization generated when the retained water evaporates.

  In addition to such a pavement block 1, a rainwater storage tank or the like for collecting and storing rainwater is installed at a predetermined location, and the water supply hose 11 is connected to the rainwater storage tank so as to be stored in the rainwater storage tank. The rainwater can be used more effectively by supplying the rainwater to the embankment via the water supply hose 11.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, the width dimension of the pavement block 1 is not limited to the one described in the above embodiment, and can be changed in various ways. In particular, the upper block portion 2 is large enough to be grasped with one hand. It is preferable to be formed.

It is a perspective view which shows the state by which the pavement block 1 as an Example of this invention was laid. It is a perspective view which shows the state which looked at the pavement block of FIG. 1 from the bottom face side. It is AA sectional drawing of FIG. It is a vertical fracture perspective view which shows the pavement block of FIG. It is a figure which shows an example of the laying state of a pavement block. It is sectional drawing which shows the state which greened the pavement surface formed by laying of a paving stone block.

Explanation of symbols

1 Pavement block 2 Upper block 2a Upper surface (guidance means)
2b Side surface 3 Lower block part 4 Step part 5 Convex part 6 Concave part 7 Bottom face 8 Groove 9 Waste tile 11 Water supply hose (irrigation hose)

Claims (6)

  A paving stone block characterized by being solidified by kneading steel slag containing at least calcium hydroxide as a component together with water to be molded into a predetermined shape and having water permeability.   The pavement block according to claim 1, wherein waste tiles crushed into a predetermined shape are mixed together with the steel slag.   It consists of a higher-order block part and a lower-order block part wider than the higher-order block part, and a step is formed at least partially between the side face of the higher-order block part and the side face of the lower-order block part. The paving stone block according to claim 1 or 2, wherein   The engaging portion that engages with the engaged portion formed on the side surface of another adjacent pavement block at the time of laying is formed on the side surface of the lower block portion. Paving stone blocks.   The pavement block according to claim 3 or 4, wherein guiding means for guiding a person or a vehicle is provided on an upper surface of the upper block portion.   When a plurality of pavement blocks are arranged adjacent to each other, a space portion in which embankment and an irrigation hose connected to a predetermined water supply source can be embedded in the embankment is formed between upper block portions of adjacent pavement blocks. The pavement block according to any one of claims 3 to 5, wherein the stepped portion is formed in the step.

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