JPH0246481Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a water-permeable concrete block used for paving roads, etc.

(Prior art) In recent years, as concrete blocks used for paving roads, etc., water-permeable concrete blocks (in practical use) have been developed, which are made of concrete with many fine communication holes so that rainwater can easily permeate into the ground.
S56-26003 etc.) are used.

(Problems to be solved by the invention) However, when this water-permeable concrete block is used for a long period of time, it becomes clogged with mud and the like, and its water permeability decreases.

To remove this clogging, the blocks that have been covered with water are washed with high water pressure, but if water permeability still does not recover, the block must be dug up and replaced with a new one, which is a laborious process. Ta.

Therefore, the object of the present invention is to provide a concrete block that has good water permeability and is easy to wash with water and remove when it does not become clogged.

(Means for solving the problem) Instead of the conventional block where the entire block is made of water-permeable concrete, it is possible to divide the block into upper and lower halves and make only the upper block from water-permeable concrete. This invention was developed based on the idea that washing with water or replacing the product would be easier.

That is, the present invention resides in a water-permeable block, which is constructed by mounting a water-permeable concrete block on top of a concrete block having through holes at the top and bottom.

Next, one embodiment of the present invention will be described with reference to the drawings.

(Example) In FIGS. 1 to 5, 1 is a water-permeable block of the present invention, and 2 is an upper concrete block made of water-permeable concrete.

A concrete block having water permeability can be obtained by adjusting the water ratio of the concrete, and has appropriate communication holes to obtain the desired water permeability.

3 is the lower concrete block, which is made of ordinary concrete. The concrete block 3 has an appropriate number of through holes 4 and 5 that pass through it vertically.
Rainwater that has passed through the many small through holes in the upper concrete block 2 is absorbed into the ground through the through holes 4 and 5.

If the through holes 4 and 5 are widened toward the bottom, it will be easier to mold and remove the mold, and the area for rainwater to be absorbed into the ground will be increased.

The upper concrete block 2 is simply stacked on top of the lower concrete block 3 and is not glued.

In order to prevent slippage between the upper concrete block 2 and the lower concrete block 3, the contact surfaces are V-shaped as shown in Figures 1 to 3, F-shaped as shown in Figures 4 and 5, and shaped as shown in the figures. Although it is not possible to do so, by using a mortar type or a type that fits the protrusion,
Both sides engage and fix each other.

If the contact surface is V-shaped or F-shaped, attach the lower concrete block 3 to the lower part of the contact surface 5,
If this exists, rainwater that has traveled along the contact surface and collected at the bottom of the contact surface will be more easily discharged to the ground.

At this time, if the diameter of the adhesive 5 located at the bottom is made larger than that of the through hole 4 located at other positions, the efficiency of water permeability will be improved.

In the case of an interlocking block, the appropriate thickness of the upper concrete block 2 is 3 to 4 cm, assuming that the total thickness is 8 cm.

If it is too thin, there is a high risk of cracking, and if it is too thick, the effect of dividing it into two will be diminished.

If the upper concrete block 2 becomes clogged due to long-term use and water permeability becomes poor, it is sufficient to remove only the upper concrete block 2 and wash it with water, or replace it.

(Effects) The paving blocks of the present invention are divided into upper and lower halves, with only the upper concrete block made of water-permeable concrete and simply loaded onto the lower concrete block. Washing with water to remove clogs and removal and removal work have become extremely easy.

Additionally, the water-permeable concrete blocks are thinner than conventional ones, which improves water permeability.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a water permeable block according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line -' in FIG. 1, and FIG. 3 is a sectional view taken along the line -' in FIG. FIG. 4 is a front view of a water-permeable block according to another embodiment of the present invention, and FIG.
A cross-sectional view taken along the line ′. 1 : Permeable block, 2,: Upper concrete block, 3,: Lower concrete block,
4, 5: Through hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A water-permeable block that is constructed by placing a water-permeable concrete block on top of a concrete block that has through holes at the top and bottom. (2) Utility model registration claim No. 1, in which the through-hole of the concrete block widens downward.
Concrete blocks as described in section. (3) The contact surfaces of the upper and lower concrete blocks are V
2. A concrete block according to claim 1, which is formed by being engaged and stacked using a mold, a square shape, a corner shape, a mold for fitting protrusions, etc. (4) The water-permeable block described in item 1 of the utility model, which has a through hole in the lower part of the contact surface of the lower block. (5) The water-permeable block according to claim 1 of the utility model registration claim 4, wherein the diameter of the through hole located at the lower part is larger than that of other through holes.