JPH0625439B2 - Template for manufacturing concrete block having protruding sealing piece and method for manufacturing concrete block using the template - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a template used for producing a concrete block having a seal piece protruding from a joint surface, and a method for producing a concrete block using the template.

[0002]

2. Description of the Related Art As a conventional manufacturing method for manufacturing a concrete block in which a sealing material is embedded in a joint portion of a concrete block and a sealing piece is protruded from the joint surface, there is a conventional method.
A manufacturing method disclosed in JP-A-2-43019 has been proposed.

As shown in FIG. 5, a sealing material a used in the manufacturing method is a combination of an embedded portion c having a stopper b and a sealing portion d made of closed-cell sponge rubber which is tapered. It was. Then, the seal member a is attached to the template by inserting the seal portion d into the top fitting groove g of the holder f fixed to the inside of the template e, and the template having the seal material attached is used. Assembling the mold, pouring concrete into the mold, hardening the mold, and then removing the mold. As a result, as shown in FIG. 6, the seal piece k is projected at the bottom of the concave groove j provided in the joint surface h. The concrete block m thus constructed was manufactured.

[0004]

However, the conventional manufacturing method described above has the following problems, which makes it difficult to call it a practical manufacturing method.

The procedure for attaching the sealing material to the template is to fit the seal portion into the fitting groove of the holder fixed inside the template. Therefore, the seal part is easily removed from the fitting groove due to the concrete pouring pressure into the formwork or the vibration during concrete compaction, and the protruding part of the seal part after the mold release is shorter than the set length. Therefore, there is a problem that the compression amount of the seal portion at the joint portion of the concrete block tends to vary, and the reliable water-stopping effect is difficult to be exhibited.

Since it is premised that a concave groove is formed on the joint surface, a seal piece having a protrusion amount smaller than the groove depth dimension is provided at the bottom of the concave groove. It is considered that the groove width, which is one of the constraints on the length, needs to be about 30 mm in the normal case. Further, in order to prevent the recessed groove portion from being chipped, a width of about 20 mm is required on both sides of the fitting groove, which means that the member thickness must be 70 mm or more. It was not applicable. It is an object of the present invention to provide a template that can solve the above problems and a method for manufacturing a concrete block using the template.

[0007]

The template 1 according to the present invention comprises:
A template used for manufacturing a concrete block having a sealing piece protruding from the joint surface 2, and an embedding portion 10 having a retaining member 9 for preventing pull-out and an elastically compressible waterproof material (for example, independent A sealing material 7 that is integrated with a sealing portion 11 made of bubble type sponge rubber is used. The seal portion 11 is formed so as to project outward through an opening groove portion 12 provided at a required portion of the template body 6 forming the joint surface 2, and the thickness of the base end portion of the sealing portion 11 is the opening groove portion 12.
Of the opening groove portion 12
It is provided with engaging portions 16 and 16 which are in contact with both inner edge portions 15 and 15 and which regulate the amount of protrusion of the seal portion 3 to be constant. Then, the sealing portion 11 is projected to the outside of the opening groove portion 12 and the engaging portions 16 and 16 are brought into contact with both inner edge portions 15 and 15 of the opening groove portion 12, whereby the elasticity of the sealing portion base end portion 13 is increased. By compression, the sealing material 7 can be mounted in the opening groove portion 12 in a fixed state. In addition, when the engaging portion 16 is separated from the edge portion 15 and the amount of protrusion of the seal portion is uneven, the engaging portion 16 is brought into contact with the edge portion 15 by pulling the seal portion outward. The feature is that the nonuniformity can be corrected.

Further, in the manufacturing method according to the present invention, when manufacturing a concrete block in which a sealing piece is projected on the joint surface 2, concrete is poured into a frame assembled using the template having the above-mentioned structure. After that, the unevenness of the protrusion amount of the seal portion caused by the pouring pressure of concrete or the vibration at the time of compaction of concrete causes the engagement portion 16 to come into contact with the edge portion 15 so that the seal portion is outwardly moved. It is characterized by being corrected by pulling to.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a template 1 according to the present invention is a concrete block 5 in which a sealing piece 3 is provided on a joint surface 2 (FIG. 3).
It is used for manufacturing the mold, and is one in which the sealing material 7 is attached to the template main body 6. The sealing material 7
As shown in FIGS. 1 and 2, the whole is formed as a flexible strip having the same cross section made of a rubber material, and has an embedded portion 10 made of hard rubber provided with a stopper 9 and a completely closed cell. The mold is formed integrally with a seal portion 11 as sponge rubber.

The seal portion 11 has a rectangular cross section, and has a U-shaped opening groove portion (passing through an intermediate portion of the joint surface 2) 12 provided in the template body 6 forming the joint surface 2. The base portion 13 of the seal portion 11 is formed to be thicker than the groove width of the opening groove portion 12 while being inserted and protruding outward.

Further, the embedding portion 10 is an engaging portion 1 that abuts both inner edge portions 15 of the opening groove portion 12 in the template body 6.
It is designed to include 6,16.

However, the sealing material 7 is molded so that the sealing portion 11 projects outward from the opening groove portion 12 and the engaging portions 16 and 16 are in contact with both inner edge portions 15 and 15 of the opening groove portion 12. When mounted on the plate body 6, the seal material 7 is stably attached to the template body 6 by elastic compression of the base end portion 13 of the seal portion. Moreover, the opening groove portion 1 of the seal portion 11
The amount of protrusion from 2 is uniform in each part.

In order to manufacture the concrete block shown in FIG. 3 using the template 1 having the above-mentioned structure, a mold is assembled using the template 1 and then concrete is poured and compacted. At that time, the seal portion 11 is opened by the opening groove portion 12 due to the pouring pressure of concrete, the vibration at the time of compaction of concrete, or the like.
When the protruding length of the seal portion becomes non-uniform due to the tendency to disengage from the seal portion 11, the seal portions 11 are pulled outward F (FIG. 1) so that the engaging portions 16 and 16 are located inside the opening groove portion 12. It is corrected so as to be in contact with both edge portions 15, 15. After that, when the concrete is hardened and then removed from the mold, the concrete block 5 shown in FIG. 3 in which the seal piece 3 is projected on the joint surface 2 is manufactured.

As shown in FIG. 4, for example, a mark is formed on the surface of the seal portion so that the engaging portion 16 is aligned with the outer edge 17 of the opening groove portion 12 in a state of being in contact with both inner edge portions of the opening groove portion 12. The line 19 may be attached. When the marking line is added in this manner, the defective portion of the protruding portion of the seal portion can be easily found depending on whether or not the marking line is visible.

[0015]

The present invention has the following excellent effects. The template according to the present invention is equipped with a sealing material so that the sealing portion projects outside the opening groove provided in the template body. Therefore, even when the sealing material tends to partially detach due to vibration when concrete is poured into a formwork formed by using such a template or when compacting concrete, the concrete should be compacted. After the completion, it is possible to visually confirm the defective portion of the protrusion of the seal portion. Then, at the unnecessary portion, by pulling the seal portion outward so that the engaging portion comes into contact with the edge portion, the protrusion length of the seal portion can be easily corrected to be uniform in each portion. Therefore, when the template of the present invention is used, it is possible to manufacture a concrete block in which the protruding length of the seal piece is uniform at each part, and it is possible to ensure water stop at the block joint portion.

When the above-mentioned conventional template is used, since the sealing material is embedded in the concrete by placing the concrete on the form, the pressure at the time of placing and the vibration at the time of compacting the concrete Even if the sealing material was partially detached due to factors such as the above, it was not possible to even confirm it, and as a result, the protruding length of the sealing portion was uneven in each part, and a reliable waterproofing effect could not be obtained. It was causing serious problems. According to the present invention, such a problem can be completely solved.

Marking lines may be provided on the surface of the seal portion so that the engagement portion is aligned with the outer edges of the opening groove portion when the engaging portion is in contact with both inner edge portions of the opening groove portion. When the mark line is provided in this manner, a defective portion of the seal portion protruding can be easily found by whether or not the mark line is visible.

In the conventional manufacturing method, the protruding length of the seal piece could not be made to protrude beyond the depth dimension of the concave groove. Therefore, if the protruding length of the seal piece is increased, There is no choice but to make the depth of the joint deeper, which may lead to a decrease in strength of the joint portion. According to the present invention, since there is no restriction on the protruding length of the seal piece,
It is possible to embed a seal material having a large protrusion length of the seal portion in conformity with the usage conditions of the block without causing a decrease in strength of the joint portion of the block.

In the conventional manufacturing method for forming the concave groove on the joint surface, the member thickness had to be increased in order to prevent damage such as chipping of the joint portion, but the present invention does not form the concave groove. In this case, there is no particular problem even if the member is thin.

[Brief description of drawings]

FIG. 1 is a partial sectional view showing a template according to the present invention.

FIG. 2 is a perspective view showing a sealing material used in the present invention.

FIG. 3 is a partial perspective view showing a concrete block manufactured by applying the present invention.

FIG. 4 is a perspective view showing a seal material having a mark line on the surface of a seal portion.

FIG. 5 is a sectional view illustrating a conventional manufacturing method.

FIG. 6 is a cross-sectional view showing a joint portion of a concrete block formed by applying a conventional manufacturing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 template 2 joining surface 3 sealing piece 5 concrete block 6 template body 7 sealing material 9 retaining 10 embedding part 11 sealing part 12 opening groove part 13 base end part 15 edge part 16 engaging part

Claims (2)

[Claims] 1. A template used for manufacturing a concrete block having a sealing piece protruding from the joint surface 2, the embedding portion 10 having a retaining member 9 for preventing pulling out, and an elastically compressible stopper. A sealing material 7 that is integrated with a sealing portion 11 made of a water-based material is used, and the sealing portion 11 is an opening groove portion 1 provided at a required portion of a template body 6 that forms the joint surface 2.
It is formed so as to be inserted through 2 and protrudes outward, and the thickness of the base end portion thereof is made larger than the groove width of the opening groove portion 12, and the stopper 9 is provided on both inner edge portions 15, 15 of the opening groove portion 12. The engaging portion 1 that comes into contact with
6 and 16, the seal portion 11 is projected to the outside of the opening groove portion 12, and the engaging portions 16 and 16 are provided on both inner edge portions 15 of the opening groove portion 12,
By abutting against 15, the seal member 7 can be fixedly mounted in the opening groove portion 12 by elastic compression of the base portion 13 of the seal portion, and the engaging portion 16 separates from the edge portion 15 and the protrusion of the seal portion When the amount becomes uneven, the unevenness can be corrected by pulling the sealing portion outward to bring the engaging portion 16 into contact with the edge portion 15. A template for manufacturing a concrete block. 2. When manufacturing a concrete block in which a sealing piece is projected on the joint surface 2, concrete is poured into a formwork assembled using the template according to claim 1, and then concrete is placed. The unevenness of the protrusion amount of the seal portion caused by pressure or vibration during compaction of concrete is corrected by pulling the seal portion outward so that the engagement portion 16 is in contact with the edge portion 15. A method of manufacturing a concrete block having a protruding seal piece.