JPH0628571Y2 - Concrete block for building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a concrete block for construction, and in particular, provides a concrete block for construction having excellent rainwater intrusion prevention performance.

(Prior Art) In order to impart a waterproofing function to the building concrete block itself, when molding the block, a waterproofing agent, for example, an inorganic waterproofing agent such as calcium chloride-based or sodium silicate-based, or a higher fatty acid is used in the molding mortar. Incorporation of organic waterproofing agents, such as those based on water, paraffin, and asphalt emulsion, is performed. However, even if the block itself is waterproof like this, since the joint mortar is interposed between the block and the adjacent block during the stacking, a crack is generated in the joint with the passage of time, and Rainwater was infiltrating. Also, after assembling the concrete blocks,
Water repellent is sprayed on the entire building,
In this case as well, the effectiveness of the water repellent has been lost over the years.

In order to solve this problem, a concrete block for construction having three face shells has been used as shown in FIGS. 4 and 5. That is, the first
The face shell 1 and the second face shell 2 are connected by three first web shells 4 to form a relatively small sub-cavity 6, and the second face shell 2 and the third face shell 3 are two second A relatively large main cavity 7 is formed by connecting with a wave shell 5, fresh concrete is poured into the main cavity 7, the sub cavity 6 is left as a cavity, and rainwater infiltrated from the outside is sub cavity 6. It is designed to be drained from. In addition,
When assembling the blocks, the upper and lower sides of the second face shell 2 and the third face shell 3 are sealed with joint mortars 8, and the upper and lower sides of the first face shell 1 are sealed with watertight packing 9. Orifices 1a are formed in two stages on both the left and right sides of the face shell to reduce the intrusion pressure of rainwater.

(Problems to be Solved by the Invention) However, in the conventional rainwater intrusion prevention type block shown in FIGS. 4 and 5, since the first face shell 1 is present in front of the second face shell 2, It is impossible to apply the finish mortar on the four circumferences of the face shell 2 to the top shell 2 so that the joints in this portion are cracked and rainwater easily infiltrate, and the joint mortar in the above portion is the orifice 1a.
There was a problem such that the spaces 1b and 1b before and after were dropped into the main cavities 6 to close them.

This invention can seal the four circumferences of the first, second, and third face shells without using joint mortar, and there is no risk of water infiltration. If rainwater intrudes between the first face shells, However, this prevents the rainwater from entering the main cavity by being drained by the time it reaches the second face shell.

(Means for Solving the Problems) In order to solve the above problems, in the present invention, the first, second and third face shells 11, 12, 13 are provided.
And the first and second web shells 14 that connect them,
The first and second face shells 1 on the front side, which are composed of 15 and
1, 12 and the first web shell 14 form a relatively small auxiliary cavity, and the second and third face shells 1 on the rear side are formed.
In a concrete block for construction in which a relatively large main cavity is formed by the second and the third web shells 15, the first, second, and third face shells 11, 12,
Grooves 11a, 12a, 13a, 11b, 12b, 13b for loading a sealing material are provided on the upper surface and one side surface of 13 so as to intersect and communicate with each other at one corner.
A ridge 11 which is fitted to the groove on the one side surface on the other side surface 3 of FIG.
c, 12c, 13c are provided, the upper surface of the first web shell 14 is located lower than the upper surfaces of the first and second face shells 11, 12 in front of and behind it, and the upper surface of the first web shell 14 is the first face shell. Inclining so that it becomes lower on the 11 side,
Protrusions 14a extending from the upper end to the lower end are provided on both side surfaces of the first web shell 14.

(Operation) At the time of assembling, by loading the sealing material in the grooves 11a, 12a, 13a, 11b, 12b, 13b of the first, second, and third face shells, the blocks on the upper, lower, left, and right sides are made of the sealing material. It is glued and its four edges are sealed. Therefore, it is unnecessary to apply the joint mortar, and the joint mortar is not cracked or the joint mortar does not peel off and fall into the space between the first and second face shells 11 and 12. Further, since the four peripheries of the first face shell 11 are sealed with the sealing material, it is possible to prevent rainwater from entering. However, if rainwater does enter, the first face shell 11 is exposed to the first web from the upper surface. The water dropped on the upper surface of the shell 14 does not flow to the first face shell 11 side and the second face shell 12 side opposite to the first web shell 14 side according to the inclination of the upper surface of the first web shell 14, and the side surface of the first wave shell 14 does not flow. The water that travels downward flows through the first face shell 11 side without being blocked by the side projections 14a and flows toward the second face shell 12 side, and flows downward to be drained.

(Example) In FIGS. 1 and 2, 11 is a first face shell, 12 is a second face shell, 13 is a third face shell, 14 is a first web shell, and 15 is a second web shell, 1st fes shell 11, 2nd fes shell 1
V-shaped grooves 11a, 12a and 13a for loading sealing material are provided on the upper surfaces of the second and third festshells 13, respectively, and V-shaped grooves 11b, 12b and 1 similar to the above are provided on one side surface, respectively.
3b are provided, and the V-shaped grooves 11a, 12a and 13a on the upper surface are provided.
It intersects with and communicates. Further, on the other side surface, a ridge that is fitted with the V-shaped grooves 11b, 12b and 13b on the one side surface, respectively.
11c, 12c and 13c are provided.

The first face shell 11 and the second face shell 12 are connected by four first web shells 14, and the second face shell 12 and the third face shell 13 are connected by two second web shells 15. ing. The second web shell 15 is provided at a distance of 1/4 of the length of the face shells 12 and 13 from both ends of the face shells 12 and 13, whereas the first web shell 14 is the second web shell 15 described above. At the position symmetrical to the position of
The first web shells 14 on both ends are the face shells 1.
It is provided so as to be slightly retracted from both end surfaces of 1 and 12.

Then, the upper surface of the first web shell 14 is inclined at a position lower than the upper surfaces of the first face shell 11 and the second face shell 12 and lower on the first face shale 11 side and higher on the opposite side. It is provided. In addition, vertical ridges 14a are provided in the front-rear center of both side surfaces of the first web shell 14.

In this embodiment, when the first web shells 14 are stacked in a zigzag pattern, all four first web shells 14 are arranged along a straight line in the vertical direction. Therefore, even if rainwater enters between the first web shells 14, its drainage Is carried out smoothly. Note that, as shown in FIG. 3, even if the two first web shells 14 are provided on the same line as the second web shell 15, the same effect can be obtained.

(Effect of the Invention) According to this invention, the grooves are provided on the upper surface and one side surface of each face shell, and the ridges are provided on the other side surface, so that the four circumferences of each face shell are adhesively sealed.
There is no need to apply joint mortar during stacking, so there is no intrusion of rainwater due to defective application of joint mortar or cracking after application and blockage of cavities due to dropout of joint mortar, and waterproof performance is improved than before. To do. Even if rainwater invades, the first face shell has the upper surface at a lower position, is inclined downward to the front, and has a ridge in the vertical direction formed on the side surface thereof. All the rainwater that has come out on the back surface flows down below the ridges of the first web shell, and does not reach the second face shell, so that the rain water is between the second and third face shells. There is no fear of penetrating the main cavity. As shown in the examples, the first web shell is pulled from both ends of the first and second face shells at a position symmetrical with respect to a position separated by 1/4 of its entire length and from both ends of the face shell. When it is provided in the retracted position, the first web shells are arranged in a straight line in the vertical direction even when they are stacked in a zigzag manner, and drainage is further smoothly performed.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention, and FIG. 2 is a plan view of FIG.
II-II sectional view, FIG. 3 is a plan view of a modified example, FIG. 4 is a plan view of a conventional example, and FIG. 5 is a sectional view taken along line VV of FIG. 11: 1st face shell, 12: 2nd face shell, 13: 3rd face shell, 14: 1st web shell, 15: 2nd web shell, 11a, 12a, 13a, 11b, 12b, 13
b: groove, 11c, 12c, 13c, 14a: ridge.

Claims (1)

[Scope of utility model registration request] 1. First, second, and third face shells, respectively.
It is composed of first and second web shells connecting these, and a relatively small sub-cavity is formed by the first and second face shells on the front side and the first web shell, and the second web shell on the rear side, In a concrete block for construction in which a relatively large main cavity is formed by a third face shell and a second web shell, a sealing material is loaded on the upper surface and one side surface of each of the first, second, and third face shells. Grooves are provided so as to intersect with each other at one corner and communicate with each other, and a protrusion that fits into the groove of the one side surface is provided on the other side surface of each of the face shells, and the upper surface of the first web shell is provided on the front and rear sides thereof. Are positioned lower than the upper surfaces of the first and second face shells, and the upper surface of the first web shell is inclined so as to be lower on the side of the first face shell. Reach Building concrete block which is characterized in that a ridge that.