Water-retaining structure

Abstract

The present invention provides a water-retentive structure that has water-retentive properties and can suppress global warming or the heat island phenomenon, and that is excellent in water permeability, strength, slip resistance, antifreeze properties, and safety (harmlessness). [Solution] The water-retaining structure 1 of the present invention contains aggregate made of crushed ceramics and / or crushed ceramic tiles, fine aggregate made of sand, and a solidifying agent, which gives it water-retaining properties that can suppress global warming or the heat island effect, as well as being permeable, strong, slip-resistant, non-freezing, and safe (harmless).

Description

[Technical Field]

[0001] The present invention relates to a water-retaining structure suitable for use in, for example, interlocking blocks, U-shaped gutter covers, exterior materials such as tiles, paving structures, etc. [Background technology]

[0002] In order to suppress global warming or the heat island phenomenon, there has been a demand for a water-retentive structure suitable for use in exterior materials such as interlocking blocks, U-shaped gutter covers, tiles, or paving structures.

[0003] In addition to water retention to lower the surface temperature, this type of water-retentive structure is required to have various functions depending on the location and purpose of use, such as water permeability to allow rainwater to pass through, strength to withstand loads, anti-slip properties, anti-freezing properties, and safety (harmlessness). For example, a water-permeable pavement structure using molten slag as aggregate (Utility Model Registration No. 3130006) has been proposed as a water-permeable pavement structure, but there has not been a water-retentive structure that is excellent in water retention, permeability, strength, anti-slip properties, anti-freezing properties, and safety (harmlessness). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3130006 Summary of the Invention [Problem to be solved by the invention]

[0005] Therefore, the object of the present invention is to provide a water-retaining structure that has water-retaining properties, can suppress global warming or the heat island phenomenon, and has excellent water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). [Means for solving the problem]

[0006] What solves the above problem is a water-retaining structure characterized by containing aggregate made of crushed ceramics and / or crushed ceramic tiles, fine aggregate made of dry sand, and a solidifying material (Claim 1).

[0007] The water-retaining structure preferably has a surface layer containing a pigment and a base layer disposed below the surface layer (Claim 2). The water-retaining structure is preferably an interlocking block (Claim 3). The aggregate is preferably aggregate crushed to 5 mm or less (Claim 4). The water-retaining structure preferably contains 50 to 60% by weight of the aggregate, 20 to 30% by weight of the fine aggregate, and 15 to 30% by weight of the solidifying material (Claim 5). The water-retaining structure may be a U-shaped gutter cover (Claim 6). The water-retaining structure may be an exterior material (Claim 7). The water-retaining structure may be a paving structure (Claim 8). The water-retaining structure preferably contains 2 to 5% by weight of an adjusting material (Claim 9). [Effects of the Invention]

[0008] According to the water-retaining structure described in claim 1, it is possible to form a water-retaining structure that has water-retaining properties and can suppress global warming or the heat island phenomenon, and that is excellent in water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). According to the water-retaining structure of claim 2, it is possible to construct a water-retaining structure having a surface layer formed in a desired color. According to the water-retaining structure described in claim 3, an interlocking block can be constructed that has water-retaining properties, can suppress global warming or the heat island phenomenon, and has excellent water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). According to the water-retaining structure described in claim 4, it is possible to provide a water-retaining structure that has better water retention properties, can suppress global warming or the heat island phenomenon, and is also superior in water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). According to the water-retaining structure described in claim 5, it is possible to provide a water-retaining structure that has better water retention properties, can suppress global warming or the heat island phenomenon, and is also superior in water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). According to the water-retaining structure described in claim 6, a U-shaped gutter cover can be constructed that has water-retaining properties and can suppress global warming or the heat island phenomenon, while also having excellent water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). According to the water-retentive structure described in claim 7, it is possible to form an exterior material that has water-retentive properties, can suppress global warming or the heat island phenomenon, and is excellent in water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). According to the water-retaining structure described in claim 8, a paving structure can be constructed that has water-retaining properties, can suppress global warming or the heat island phenomenon, and is excellent in water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). According to the water-retaining structure of claim 9, a water-retaining structure having even greater strength can be constructed. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of an embodiment (interlocking block) of the water-retaining structure of the present invention. FIG. [Figure 2] FIG. 2 is a perspective view of another embodiment (U-shaped gutter cover) of the water-retaining structure of the present invention. [Figure 3] FIG. 2 is a perspective view of another embodiment (tile) of the water-retentive structure of the present invention. [Figure 4] FIG. 2 is a cross-sectional view of another embodiment (paving structure) of the water-retaining structure of the present invention. [Figure 5] 1 is a table showing the results of a compressive strength test of the water-retaining structure of the present invention. [Figure 6] 1 is a graph showing the relationship between compressive strength and age of the water-retentive structure of the present invention. [Figure 7] 1 is an explanatory diagram for explaining a water retention test (surface temperature contrast test) of the water-retentive structure of the present invention and asphalt. DETAILED DESCRIPTION OF THE INVENTION

[0010] This invention contains aggregate made of crushed ceramics and / or crushed ceramic tiles, fine aggregate made of dry sand, and a solidifying agent, thereby realizing a water-retaining structure 1 that has water-retaining properties and can suppress global warming or the heat island effect, as well as excellent water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). [Example]

[0011] The water-retentive structure of the present invention will be explained using a water-retentive structure 1 shown in FIG. The water-retentive structure 1 of this embodiment is an interlocking block, and contains aggregate made of crushed ceramics and / or crushed ceramic tiles, fine aggregate made of dry sand, and a solidifying agent. The structure will be described in detail below.

[0012] The water-retentive structure (interlocking blocks) 1 is intended to be combined to form a brick-like pavement, and in this embodiment, the water-retentive structure (interlocking blocks) 1 is formed in a rectangular parallelepiped. However, the shape is not limited to this, and in addition to a cube, any desired shape, such as a hexagonal, octagonal, or circular shape in plan view, is also broadly encompassed within the scope of the present invention. Examples of areas where the water-retentive structure (interlocking blocks) 1 can be installed include parking lots, terraces, entrance approaches, and curbside runs.

[0013] The water-retaining structure (interlocking block) 1 has water-retaining properties because crushed ceramics and / or crushed ceramic tiles are used as aggregates. This reduces the amount of heat stored in the water-retaining structure (interlocking block) 1 and suppresses the rise in surface temperature due to the heat of vaporization when the retained water evaporates, thereby suppressing global warming or the heat island effect. The crushed ceramics and / or crushed ceramic tiles also increase the bonding force, giving the water-retaining structure strength. Furthermore, because the crushed ceramics and / or crushed ceramic tiles are made from crushed recycled products, harmful substances are removed during firing, allowing for the construction of a safe (harmless) water-retaining structure 1. In this embodiment, the water-retaining structure (interlocking block) 1 has aggregates made of crushed ceramic tiles, but this is not limited to this, and structures in which the aggregate is made of crushed ceramics, and structures in which the aggregate is made of crushed ceramics and crushed ceramic tiles, are also broadly included in the scope of this invention.

[0014] Furthermore, it is preferable that the aggregate made of crushed ceramics and / or crushed ceramic tiles be crushed to 5 mm or less. As a result, as shown in Figure 1, the crushed materials of 5 mm or less form unevenness on the surface, making it possible to form a water-retaining structure (interlocking block) 1 with excellent slip resistance. Crushed materials of 5 mm or less can be produced, for example, by crushing crushed ceramics and / or ceramic tiles and then passing the crushed materials through a sieve with mesh openings of 5 mm or less.

[0015] Suitable examples of fine aggregate made of sand include river sand and dry sand. By including fine aggregate, the water-retentive structure 1 has water permeability and moisture does not appear on the surface, making it possible to form a water-retentive structure (interlocking block) 1 that is anti-freeze and anti-slip.

[0016] As the solidification material, for example, a cement-based solidification material can be suitably used, which gives strength to the water-retaining structure (interlocking block) 1. It is preferable that the water-retaining structure (interlocking block) 1 of the present invention contains a solidification auxiliary material as an adjusting material, which allows the construction of a water-retaining structure with even greater strength.

[0017] The water-retaining structure (interlocking block) 1 preferably contains 50 to 60% by weight of aggregate, 20 to 30% by weight of fine aggregate, and 15 to 30% by weight of solidifying material. By using materials within these ranges, the water-retaining structure (interlocking block) 1 can be configured with better water retention, which can help suppress global warming or the heat island effect, and with better water permeability, strength, slip resistance, antifreeze properties, and safety (harmlessness). Furthermore, the water-retaining structure (interlocking block) 1 preferably contains 2 to 5% by weight of adjusting material. This allows the water-retaining structure (interlocking block) 1 to be configured with better strength.

[0018] As shown in Fig. 1, the water-retaining structure (interlocking block) 1 is formed as an integral body having a surface layer 2 containing a pigment and a base layer 3 disposed below the surface layer 2. This makes it possible to construct a water-retaining structure 1 having a surface layer formed in a desired color.

[0019] Next, a method for producing the water-retaining structure (interlocking block) 1 will be described. To manufacture the water-retaining structure (interlocking block) 1, 50-60% by weight of aggregate (e.g., crushed ceramic tiles, a Gifu Prefecture recycled product), 20-30% by weight of fine aggregate (e.g., river sand), 15-30% by weight of solidifying agent, and 2-5% by weight of adjusting agent (solidification aid) are mixed, and approximately 10% of the total weight of water is added and kneaded. Next, approximately 1% by weight of pigment is added to the kneaded mixture that will form the surface layer 2 to color it. The kneaded mixture that will form the base layer 3 is then placed in the mold of a compression press, and the colored kneaded mixture is then placed and compressed. The compressed kneaded mixture is removed from the mold and allowed to dry naturally to solidify, producing the water-retaining structure (interlocking block) 1. [Example]

[0020] Further, other embodiments of the water-retaining structure of the present invention will be described one by one. The water-retaining structure 10 shown in Figure 2 is a U-shaped gutter cover. In this way, by constructing a U-shaped gutter cover using the water-retaining structure of the present invention, it is possible to provide a U-shaped gutter cover with water-retaining properties that can suppress global warming or the heat island effect, and that has excellent water permeability, strength, anti-slip properties, anti-freeze properties, and safety (harmlessness). The manufacturing method of the water-retaining structure (U-shaped gutter cover) 10 is substantially the same as that of the water-retaining structure (interlocking block) 1. [Example]

[0021] The water-retentive structures 20 and 30 shown in Figure 3 are exterior materials (tiles), with Figure 3(a) showing a square tile 20 in plan view and Figure 3(b) showing a rectangular tile 30 in plan view. In this way, by constructing an exterior material using the water-retentive structure of the present invention, it is possible to provide an exterior material (wall or floor material) with water-retentive properties that can suppress global warming or the heat island effect, as well as excellent water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness). The manufacturing method for the water-retentive structures (exterior materials) 20 and 30 is also substantially the same as that for the water-retentive structure (interlocking block) 1. [Example]

[0022] The water-retentive structure 40 shown in Figure 4 is a paving structure. By placing the water-retentive structure (paving structure) 40 of the present invention on the ground 50, it is possible to provide water-retentive properties that can suppress global warming or the heat island effect, and to configure a paving structure that is excellent in water permeability, strength, slip resistance, anti-freeze properties, and safety (harmlessness).

[0023] Possible locations for placing the water-retentive structure 40 include, for example, footpaths in park facilities, dirt paving of garden paths, road medians, dirt paving of farm roads and footpaths, carports, berms, approaches or exteriors of ordinary houses, hard-to-maintain areas of facilities such as hospitals, nursing homes or care homes, slopes, road shoulders, stadiums, green spaces, flower beds, etc. The water-retentive structure (paving structure) 40 can be produced in substantially the same manner as the water-retentive structure (interlocking block) 1, but water-retentive structures (paving structures) 40 constructed on-site are also included in the scope of the present invention.

[0024] (Compression strength test: JIS A 1108) As the water-retentive structure of this invention, specimens 1, 2, and 3, each measuring 100 mm in diameter and 50 mm in height, were prepared in accordance with JIS A 1132, each containing 55% by weight of aggregate (Gifu Prefecture recycled certified product: crushed ceramic tile), 20% by weight of fine aggregate (river sand), 20% by weight of solidifying material, and 5% by weight of adjusting material. Then, a compressive load was applied to the water-retentive structures of this invention (specimen 1, specimen 2, specimen 3), and the maximum stress at the time of destruction was measured for each. The compressive strength (N / mm 2 ) was calculated by placing the water-retaining structures (specimen-1, specimen-2, specimen-3) in a compression testing machine and dividing the load at the time of failure by the cross-sectional area.

[0025] (Compression strength test results) Based on the results of the compressive strength test, the compressive strength of each of the water-retentive structures of the present invention (specimen-1, specimen-2, specimen-3) was calculated, and the values ​​shown in the table in Figure 5 were obtained. That is, the compressive strength of the water-retentive structure of the present invention three days after production was 10.4 N / mm 2The compressive strength after 7 days from the production was 13.3N / mm 2 The compressive strength 28 days after production was 19.6N / mm 2 It was confirmed that the material had sufficient strength. Furthermore, as shown in the graph in Figure 6, it was confirmed that the strength increased with age.

[0026] (Water retention test) A water retention test (surface temperature comparison test) was conducted by photographing the surface temperature difference between the water-retentive structure of the present invention (exterior material: tile 20 shown in Figure 3(a)) and the asphalt board 60 with a thermographic camera. Specifically, as shown in Figure 7, a sandy roadbed 72 was adjusted on a pallet 71, and a 50cm x 50cm x 5cm exterior material (tile) 20 and an asphalt board 60 of the same dimensions were placed on top. The pallet 71 was then thoroughly watered the day before and left overnight, and the next morning it was allowed to dry naturally in a place that was not shaded. It was left as it was during the day on a sunny day, and photographs were taken with a thermographic camera in the afternoon.

[0027] (Water retention test results) The surface temperature of the water-retentive structure (exterior material: tile) 20 of the present invention was 28°C. On the other hand, the surface temperature of the asphalt board 60 was 60°C. It was confirmed that the water-retentive structure (exterior material: tile) 20 of the present invention retains moisture even after a long period of time, and its surface temperature remains much lower than that of the asphalt board 60. This confirms that the water-retentive structure of the present invention can suppress global warming or the heat island phenomenon. [Explanation of symbols]

[0028] 1. Water-retaining structure (interlocking block) 2 Surface layer 3 Base material layer 10 Water-retaining structure (U-shaped groove lid) 20,30 Water-retaining structure (exterior material: tile) 40 Water-retaining structure (pavement structure)

Claims

1. A water-retaining structure characterized by containing aggregate made of crushed ceramics and / or crushed ceramic tiles, fine aggregate made of sand, and a solidifying agent.

2. 2. The water-retentive structure according to claim 1, wherein the water-retentive structure comprises a surface layer containing a pigment and a base layer disposed below the surface layer.

3. The water-retentive structure according to claim 1 or 2, wherein the water-retentive structure is an interlocking block.

4. 2. The water-retaining structure according to claim 1, wherein the aggregate is crushed to a size of 5 mm or less.

5. The water-retaining structure according to claim 1, wherein the water-retaining structure is formulated in the range of 50 to 60% by weight of the aggregate, 20 to 30% by weight of the fine aggregate, and 15 to 30% by weight of the solidifying material.

6. The water-retaining structure according to claim 1 , wherein the water-retaining structure is a cover for a U-shaped gutter.

7. The water-retentive structure according to claim 1 , wherein the water-retentive structure is an exterior material.

8. 2. The water-retentive structure according to claim 1, wherein the water-retentive structure is a paving structure.

9. 6. The water-retentive structure according to claim 5, wherein the water-retentive structure contains an adjusting material in an amount ranging from 2 to 5% by weight.

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