JP3072480B2 - Water-permeable ceramic member and water-permeable pavement structure using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic member having water permeability and a water-permeable pavement structure using the same, and more particularly, to a member having an improved water-permeable effect by preventing clogging of water-permeable holes. .

[0002]

2. Description of the Related Art As a water-permeable pavement structure such as a road surface, a brick pavement having a water-permeable joint on a road floor or a water-permeable pavement made of sand-grained water-permeable bricks has been proposed. However, there is a problem in that the gap inside the brick main body is clogged with the invasion of the fine dust, and the water permeability is deteriorated.

A water-permeable pavement structure for solving this problem and effectively transmitting rainwater and the like on a road surface into the ground is disclosed in Japanese Patent Application Laid-Open No. Hei 8-269905. Disclosed here is to provide a through hole in the brick, make the diameter of the hole opened on the upper surface and the lower surface different, make the hole on the upper surface small, and make the hole on the lower surface large, drainage function This is intended to prevent clogging while preventing deterioration of the device.

[0004]

However, even in the above-mentioned conventional bricks, an opening for drainage is provided on the upper surface of the brick, and if the opening is clogged with mud or dust, the drainage function cannot be achieved. That is no different.

[0005] By the way, bricks have a water absorption of 5 to 8%. The present inventor paid attention to this water absorption property of bricks, and paid attention to whether or not the contradictory problems of clogging prevention and drainage efficiency could be solved by utilizing the water absorption property. Was.

An object of the present invention, a ceramic member having a water permeability which can keep the water permeability together essentially eliminate clogging by eliminating the opening of the surface and it
It is an object of the present invention to provide a used permeable pavement structure.

[0007]

Means for Solving the Problems The constitution of the invention adopted to achieve the above object is as follows. In the first invention, a required number of hollow portions are provided between the opposing surfaces, and both ends of the hollow portions are located near the surfaces of the respective surfaces. , A penetrating part constituting a part of the opposing surface is provided, the penetrating part closes the hollow part, and the penetrating part and other parts are made of the same material.
And characterized in that a ceramic member having a water permeability.

According to a second aspect of the present invention, there is provided the water-permeable ceramic member according to the first aspect, wherein the ceramic member is a brick.

In the third invention, the diameter of the hollow portion is 6
mm. The water-permeable ceramic member according to the first or second invention, characterized in that the thickness is not more than mm.

In a fourth aspect, the first to third aspects
A water-permeable pavement structure, characterized in that the ceramic member having water permeability according to any of the inventions is laid on a roadbed with permeation portions arranged vertically.

The ceramic member having water permeability includes:
Bricks made by firing clay can be raised, but tiles may also be used.

When a pavement structure is constructed by laying a ceramic member having water permeability, water on the road surface is infiltrated into the upper part of the hollow portion and a part of the upper surface of the ceramic member. Through the perforated portion, which is a part of the lower surface of the ceramic member, and is discharged out of the hollow portion. Since the surface of the water-permeable ceramic member does not have an opening or a rough surface that causes clogging, the hollow portion does not clog.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view showing an embodiment in which a brick, which is a ceramic member having water permeability, is partially cut. FIG. 2 is a cross-sectional view of the brick shown in FIG. FIG. 3 is an explanatory longitudinal sectional view showing one embodiment of the permeable pavement structure on which the bricks shown in FIG. 1 are laid. FIG.
FIG. 2 is an explanatory view showing a method for manufacturing the brick shown in FIG. 1.
The same or equivalent parts are denoted by the same reference numerals throughout the drawings. In addition, overlapping description will be omitted.

In FIG. 1, reference numeral 10 denotes a brick which is a ceramic member having water permeability. A required number of hollow portions 13, 13,... Are provided between the upper surface 11 and the lower surface 12, which are opposite surfaces of the brick 10. The two ends of the hollow portions 13, 13,...
1 and the lower surface 12. The upper surface 11 and the lower surface 12 are provided at both ends of the hollow portions 13, 13,.
Are provided. The permeation portions 14, 14,...
Are closed. In addition, 15 is a spacer.

Referring to FIG. In this embodiment, the hollow portion 1
The number of 3, 13,... Is 48, and the hollow portions 13, 1,.
3,... Have a diameter of 4 mm during molding and a diameter of 3.5 mm during firing. The distance between the hollow portions arranged in the longitudinal direction is 23 mm, and the distance between the hollow portions in the width direction is 1 mm.
6 mm, 13.5 mm from adjacent rows.

Referring to FIG. The brick 10 is laid on a subgrade composed of a sand layer 2, a rubble stone, and a gravel layer 3. The lower penetration part 14 is in contact with the sand layer 1. In addition, the permeation part 14
The sand of the sand layer 1 is prevented from entering the hollow portions 13, 13,.

When a pavement structure is constructed by laying bricks 10 as in the illustrated embodiment, the road surface (brick upper surface 11)
The upper water enters the hollow portions 13, 13,... Through the permeation portion 14, which is the upper portion of the hollow portions 13, 13,. The bricks 10 are discharged to the outside through the hollow portions 13, 13,. Like this brick 1
Since there is no opening or a rough surface that causes clogging on the surface of the brick 0, fine dust and mud are prevented from entering the hollow portions 13, 13,. The rainwater and the like on the brick 10 can smoothly flow into the hollow portion 1 without clogging.
Are discharged onto the roadbed via the third, third,.

As an experiment on the water permeability, a water reservoir was formed by surrounding the upper surface 11 of the brick according to the present embodiment with a gum tape. For comparison, a solid brick was made of the same material, and a water reservoir was formed by surrounding the upper surface of the brick with gum tape in the same manner. Then give each a glass of water (180c
c) was poured. In addition, it was made possible to observe the drop of water drops in a state where all the bricks were floating. As a result, in the brick according to the present example, water droplets began to fall from the permeated portion on the lower surface in about 5 seconds after water injection was started, but no water droplets fell in the control brick even for several hours.

Referring to FIG. The clay used as the material of the brick 10 is extruded by an extruder (not shown). At the mouth of the extruder, there is a rod (4 mm in diameter) arranged in the shape of a hollow to form a hollow. Then, when the clay is extruded by an extruder, a molded body 40 having a required number of hollow portions formed in the extrusion direction is obtained. Thereafter, the molded body 40 is cut by a cutting machine 41 in which a piano wire 42 is stretched. Along with the cutting of the molded body 40 by the piano wire 42, a part of the clay is dragged by the piano wire 42 and the opening of the cut surface connected to the hollow portion is closed. As a result of the experiment, it was found that when the diameter of the hollow portion exceeded 6 mm, the opening of the hollow portion was not closed during cutting.

It should be noted that the terms and expressions used in the present specification are merely illustrative and not restrictive, and the terms described in the present specification and terms equivalent to a part thereof are used. There is no intention to exclude words or expressions. Further, the present invention is not limited to the illustrated embodiment, and it goes without saying that many modifications can be made within the scope of the technical idea of the present invention.

[0021]

As described above, according to the present invention, since there is no opening on the surface, clogging is essentially eliminated, and the water permeability which can ensure the water permeation performance due to the presence of the permeated portion and the hollow portion. The present invention can provide a permeable ceramic member and a permeable pavement structure using the same . In addition, by using the water-permeable ceramic member for part or all of the flowerbed, it has a drainage function, but can prevent leakage of contents. Furthermore, since it is not necessary to pay attention to the direction when laying like a conventional brick, labor for construction can be omitted. Furthermore, since there is no opening on the lower surface during construction, sand can be prevented from entering the hollow part when adjusting the height during construction or during rolling after construction, and as a result As a result, clogging of the hollow portion can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment in which a brick, which is a ceramic member having water permeability, is partially cut.

FIG. 2 is a cross-sectional view of the brick shown in FIG.

FIG. 3 is an explanatory longitudinal sectional view showing one embodiment of a water-permeable pavement structure on which the bricks shown in FIG. 1 are laid.

FIG. 4 is an explanatory view showing a method for manufacturing the brick shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Brick 11 Upper surface 12 Lower surface 13 Hollow part 14 Permeation part 15 Spacer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E01C 5/00 E01C 5/04 E01C 5/22 E02B 3/14

Claims (4)

(57) [Claims] 1. A required number of hollow portions are provided between opposing surfaces, and both ends of the hollow portions are located near the surfaces of the respective surfaces. Is provided, and the penetrating portion blocks the hollow portion, and the penetrating portion and other portions are the same.
A ceramic member having water permeability, which is made of one material . 2. The water-permeable ceramic member according to claim 1, wherein the ceramic member is a brick. 3. The ceramic member having water permeability according to claim 1, wherein the diameter of the hollow portion is 6 mm or less. 4. A water-permeable pavement structure, characterized in that the water-permeable ceramic member according to any one of claims 1 to 3 is laid on a roadbed with permeation portions arranged vertically.