JPH0141790B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to buildings and other structures made of hollow concrete blocks.

(Prior art) A structure consisting of a hollow concrete block is a rectangular parallelepiped-shaped hollow concrete block (usually called a "three-core hollow concrete block") with flat upper and lower surfaces and three vertical holes communicating in the vertical direction. It is widely known that the blocks (called "blocks") are stacked together with joint mortar about 1 cm thick on the top, bottom, left and right sides.

In addition, as a hollow concrete block, the front plate part and the rear plate part are connected by a pair of left and right connecting parts,
A vertical hole that communicates vertically between the connecting parts and a mechanism that communicates in the width direction above and below the connecting parts (usually called a "formwork block") are used, and the above three-core hollow As with the body block, the joint mortar is placed on top of the masonry, and reinforcement is placed in the horizontal grooves and vertical holes. After the masonry is finished and the joint mortar has dried, it is installed from the top of the masonry structure into the mechanisms and vertical holes described above. It is known that reinforced concrete is formed by pouring fresh concrete.

Furthermore, as the above-mentioned formwork panel, protrusions and holes that fit into each other are provided on the top, bottom, left and right joint surfaces,
There is a known structure that prevents misalignment during masonry.

(Problems to be Solved by the Invention) A structure in which three-core hollow blocks are simply assembled requires skill in applying joint mortar and takes a long time to assemble. In addition, a reinforced concrete block structure made by stacking formwork blocks with joint mortar has excellent strength and can be used as a building, but it requires the application of joint mortar. As with core cavity blocks, construction required skill and a long time.

In addition, when the projections and holes are fitted together at the mating part of the formwork blocks, joint mortar can be omitted, making construction easier, and there is no need to dry the joint mortar. Water in fresh concrete filled in cavities such as horizontal grooves may leak out from the joints, staining the exterior surface, or conversely, rainwater may enter the cavity from the joints, causing rust on the reinforcing bars. I had a problem with getting used to it.

The present invention provides a structure made of hollow concrete blocks that provides a reinforced concrete block structure, does not require joint mortar, is easy to construct, and does not allow water to enter or exit from joints of adjacent blocks. It is.

(Means for solving the problem) A hollow concrete block 1 having a cavity communicating vertically and horizontally between a front plate part 2 and a rear plate part 3 is stacked, and reinforcing bars 6 are installed in the cavity. In a structure made of a hollow concrete block filled with ready-mixed concrete, uneven strips 2a in the width direction that fit into the upper and lower surfaces of the front plate part 2 and the rear plate part 3 of the hollow concrete block 1, 2
c, 3a, 3c, and heightwise uneven strips 2d, 2e, 3d, 3e which fit each other are formed on the left and right end surfaces of the front plate part 2 and rear plate part 3, respectively, and the above-mentioned width direction The uneven stripes in the height direction are fitted together with a string-like packing 5 made of adhesive unvulcanized rubber interposed therebetween to form a sheet.

(Function) During masonry, the uneven strips 2a, 2c, 3 in the width direction
a, 3c and heightwise uneven lines 2d, 2e, 3
While attaching the string-like packing 5 to d and 3e by pressure bonding, these uneven stripes are fitted into each other. Therefore, a large number of hollow concrete blocks 1 are stacked regularly, and the hollow concrete blocks 1 that are adjacent to each other vertically and horizontally are adhered by the adhesive force of the string-like packing 5. The string-like packing 5 is made of unvulcanized rubber, is soft, has low elasticity, and is easily deformed plastically, so it completely fills and seals minute gaps caused by fine irregularities on the surface of the hollow concrete block 1. Moreover, the above-mentioned minute gap does not open due to elastic recovery.

(Example) The hollow concrete block 1 shown in FIG. 1 is formed into a substantially rectangular parallelepiped shape by connecting a rectangular front plate part 2 and a rectangular rear plate part 3 with left and right connecting parts 4. The connecting portion 4 has V-shaped or U-shaped recesses on both its upper and lower surfaces, thereby forming a cavity that communicates vertically and horizontally within the hollow concrete block 1.

On the inner side of the upper surface of the front plate part 2 and the rear plate part 3, lateral protrusions 2a and 3a are formed as examples of uneven stripes, respectively, and narrow grooves 2b and 3b are provided along the bases thereof, respectively. On the inner side of the lower surface, cutout steps 2c and 3c are provided, respectively, as examples of uneven stripes that can be fitted with the above-mentioned protrusions 2a and 3a (see FIG. 2). On the other hand, V grooves 2d (see FIG. 3) and 3d (see FIG. 3) in the height direction are formed as examples of uneven stripes on the left end surface of the front plate section 2 and the right end surface of the rear plate section 3, respectively. On the right end surface and the left end surface of the rear plate portion 3, protrusions 2e and 3e with chevron-shaped stepped surfaces are provided as protrusions and recesses that can be fitted into the V-grooves 2d and 3d, respectively.

The hollow concrete block 1 has the concavo-convex strips 2a and 2c on the upper and lower surfaces, and 3a and 3c fitted together, and the concave-convex strips 2d and 2e on both left and right ends, and 3d and 3e, respectively. String-like packing 5 with a circular cross section, which is made of a thin string made of polyurethane sponge as a core and covered with unvulcanized butyl rubber, is sandwiched between the fitting parts and assembled. Then, reinforcing bars 6 are inserted into each cavity in the width direction and height direction, and then fresh concrete is poured into the cavities and dried.

In the above embodiment, the string-like packing 5 has a thin string of polyurethane sponge along its center line and is reinforced, so it has some elasticity and does not break due to tension. It is easy to handle and does not become thinner in some areas and thus does not impair sealing performance. Furthermore, since the rubber constituting the string-like packing 5 is butyl rubber, it has excellent weather resistance. Further, protrusions 2a and 3a are provided on the upper surfaces of the front plate part 2 and the rear plate part 3, respectively,
Since the notch steps 2c and 3c are recessed on the bottom surface and are fitted together, it is better at preventing rainwater from entering than when there are cutout steps or grooves on the top surface and protrusions on the bottom surface. Even more effective. and,
Thin grooves 2b,
3b is provided, so these narrow grooves 2b, 3b
The above-mentioned string-like packing 5 can be attached to the string-like packing 5, and attachment of the string-like packing 5 is easy.
Further, in this embodiment, the height of the protrusions 2a, 3a is set smaller than the depth of the notch steps 2c, 3c on the lower surface, and a sealing surface is formed on the outside of the protrusions 2a, 3a on the upper surface. Therefore, the string-like packing 5 is easier to perform than when the height of the protrusions 2a, 3a is made larger than the depth of the notch steps 2c, 3c to form a sealing surface on the upper surface of the protrusions 2a, 3a. Can be installed on.

In the above embodiment, a flat string packing 5 may be used, and in this case there is no risk of rolling. Alternatively, a three-core cavity may be formed by increasing the number of connecting portions 4. Furthermore,
After the hollow concrete blocks 1 are assembled, it is of course possible to fill the gaps between the front plate parts 2 of the adjacent hollow concrete blocks 1 with mortar.

(Effect of the invention) This invention forms uneven stripes on each of the upper, lower, left, and right sides of the front plate portion and the rear plate portion, and fits the uneven strips of adjacent hollow concrete blocks into each other, and the fitting portions of the hollow concrete blocks. Since the masonry is made by sandwiching string-like packing of unvulcanized gum, there is no need to sandwich joint mortar during masonry work, and therefore no skill is required for the work, making it easy and efficient for beginners. can be assembled into. Furthermore, since no joint mortar is used, there is no need to wait for the joint mortar to dry after masonry, and fresh concrete can be poured immediately after masonry. Since the string-like packing of unvulcanized rubber is sandwiched between the joints of adjacent hollow concrete blocks, the adjacent hollow concrete blocks are glued to each other and do not shift at the joints, and are completely This seal prevents water from fresh concrete poured into the cavity from leaking to the outside, and prevents rainwater from entering the cavity from the outside.

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a cross-sectional view of the joint in the vertical direction, and FIG. 3 is a plan view of the joint in the width direction. 1: Cavity concrete block, 2: Front plate part,
3: Rear plate part, 2a, 3a, 2d, 3d: Convex strip, 2
c, 3c: notched stepped portion, 2e, 3e: groove, 4: connecting portion, 5: string-like packing, 6: reinforcing bar.

Claims (1)

[Scope of Claims] 1. A hollow concrete block in which a cavity communicating vertically and horizontally is formed between the front plate part and the rear plate part is stacked, reinforcement is arranged in the cavity, and fresh concrete is filled. In the structure made of hollow concrete blocks, axial grooves and grooves that fit into the upper and lower surfaces of the front plate and rear plate of the hollow concrete block are also provided on the front and rear plates. Concave and convex stripes in the height direction that fit into each other are formed on the left and right end surfaces, and each of the concave and convex strips in the width direction and height direction are fitted with string-like packing made of adhesive unvulcanized rubber sandwiched therebetween. A structure made of hollow concrete blocks characterized by being assembled and sealed. 2. A patent in which a protruding strip in the width direction is formed along the inner edge of the upper surface of the front plate part and the rear plate part, and a notched stepped part that fits with the protruding strip is recessed along the inner edge of the lower surface. A hollow concrete block structure according to claim 1. 3. A hollow concrete block structure according to claim 1 or 2, wherein the string-like packing is in the form of a round string. 4. A hollow concrete block structure according to claim 3, wherein the string-like packing has a polyurethane sponge-like core along its center. 5. A hollow concrete block structure according to claim 1 or 2, wherein the string-like packing is flat string-like. 6. A hollow concrete block structure according to any one of claims 1 to 5, wherein the string-like packing is made of unvulcanized butyl rubber.