JP3085299U - Waterproof sealing material for concrete molded products - Google Patents

Abstract

(57) [Summary] [PROBLEMS] The present invention relates to a waterproof sealing material for a concrete molded product.
The joints can be made efficiently with simple handling of civil engineering materials such as ground structures such as shaped blocks, culvert blocks and retaining wall blocks, and building materials such as outer wall panels and inner wall panels, thereby ensuring waterproofness. An engaging part (4) formed of a soft material such as synthetic resin or rubber and engaged in an engaging hole (3) provided in a joint end surface (2a) of one member (A1) of a concrete molded product (A, B) to be joined. Is provided on at least one side of the sealing material body 1, and the sealing material body 1 has the other member B1 of one concrete molding A and the other concrete molding B.
The elastic seal portion 5 elastically pressed between the joint end surface 2b and the joint end surface 2b is provided so as to intersect in the insertion direction X of the sealing material body 1.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a waterproof sealing material for a concrete molded product, such as a concrete molded product, for example, a gutter block, a U-shaped block, a culvert block, a waterway block, a dam block, a retaining wall block, or the like as a water-based underground buried structure. It can be attached to civil engineering materials such as objects, and also to building materials such as outer and inner wall panels with simple handling, so that the end faces can be joined efficiently and the waterproofness is ensured.

[0002]

[Prior art]

 Conventionally, as a water-based concrete molded product through which rainwater or the like flows, for example, in order to measure the water stop between the joining end faces of the gutter blocks, as shown in FIG. Alternatively, a packing c or an O-ring made of an elastic material such as a synthetic resin is interposed, and a plurality of mounting plates d are straddled between the outer side surfaces of the joint end surfaces b, b as mounting portions of the side groove blocks a, a. The water is stopped by tightening the joint end surfaces b, b of the side groove blocks a, a using a bolt e. Conventionally, there is, for example, a structure shown in FIG. 10 as a device for stopping water between the joint end surfaces of a sewer pipe to be joined as a water-based underground structure. That is, a packing h or an O-ring made of an elastic material of rubber or synthetic resin is interposed in a front opening g of a front opening f of a receiving port pipe f as one concrete molded article to be joined, and the other concrete molded article is used. This is a method of inserting the insertion tube i.

[0003]

[Problems to be solved by the invention]

 However, as shown in FIG. 9, as a concrete molded product, for example, a packing c or an O-ring made of an elastic material such as rubber or synthetic resin is interposed between the joining end surfaces b and b of the gutter blocks a and Attaching the mounting plates d, d between the outer side surfaces of the joining end surfaces b, b as the attaching portions of the blocks a, a, and tightening the joining end surfaces b, b of the side groove block a using bolts e. The conventional method of press-fitting a packing c or O-ring made of rubber or the like between the joining surfaces of the concrete molded products A and B by the method described above is difficult because the flexibility between the concrete molded products A and B is significantly impaired. Is performed with a pressing force enough to cause the elastic deformation of the packing c, and is not sufficient. In addition, packing c or O-ring may be inadvertently moved at the time of installation in which packing c or O-ring is retrofitted between joint end faces b, b of side gutter blocks a, a as concrete molded products in order to stop water. In addition, it cannot be mounted at a predetermined position due to dropping off from the joint end surfaces b, b of the side groove blocks a, a, and much work is required for mounting the mounting plate d and the bolt e for tightening the side groove blocks a, a. Since time and labor are required, the water blocking work and the joining work between the gutter blocks a, a cannot be performed efficiently, and the work efficiency is poor, so that the construction cost, material cost, and manufacturing cost are high. Poor earthquake resistance. Also, as shown in FIG. 10, by inserting an insertion pipe i through a packing h made of rubber or the like into a receiving port g of a receiving port pipe f, a concrete molded product A as a water-based underground buried structure can be obtained. The other conventional method of joining B to each other as described above secures a clearance in the spout g of the spout f and reduces the frictional resistance to such a degree that the packing h does not come out of the spout g in a natural joining state. In addition, the design must be performed in such a way as to satisfy the requirements such as that the limit pressure for pushing by the insertion tube i must be set to the maximum. In addition, this joining method provides sufficient water-blocking properties, such as leakage from the gap between the inlet pipe and the insertion pipe against external forces such as ground deformation, ground strain, vibration, and other tensile or compressive forces due to earthquakes. I couldn't do that.

[0004] The present invention solves the above-mentioned drawbacks, and ensures that the concrete molded articles to be joined have a sufficient waterproof property, and that the sealing material body is quickly and reliably attached to the joint end face of the concrete molded article during installation. Waterproof seal for concrete molded products with excellent work efficiency, low construction costs, material costs, and low production costs, and excellent seismic resistance. Materials.

[0005]

[Means for Solving the Problems]

 The invention according to claim 1 of the present invention is an engaging portion formed of a soft material such as synthetic resin or rubber and engaged in an engaging hole provided in a joint end surface of one member of a concrete molded product to be joined. Is provided on at least one side of the sealing material main body, and the sealing material main body is elastically pressed between the one end of the concrete molded product and the joining end face of the other member of the other concrete molded product. In this case, the parts are provided so as to cross each other in the insertion direction of the sealing material main body.

According to a second aspect of the present invention, in the first aspect, the engaging portion includes a locking piece having a desired shape to be locked in an engaging hole of the concrete molded product. A plurality of locking lip portions are provided at a rear portion of the locking piece portion at a desired angle as needed.

According to a third aspect of the present invention, in the first or second aspect, the engaging portions are provided on both sides of the sealing material main body. We adopted the means to do so.

According to a fourth aspect of the present invention, in any one of the first, second, and third aspects, an insertion direction is provided between the engagement portion and the elastic seal portion. A flexible portion is provided so as to be able to intersect the flexible portion.

According to a fifth aspect of the present invention, there is provided the device according to any one of the first, second, third and fourth aspects, wherein the elastic seal portion has a desired thickness. A means is adopted, which is formed in an appropriate shape in cross section or in a hollow shape having an air buffer portion inside an outer shell portion having elasticity.

The invention according to claim 6 of the present invention is characterized in that in any one of claims 1, 2, 3, 4, and 5, the hollow elastic seal portion is The joint strength between the elastic force of the outer shell itself and the cushioning force of the air buffer provided in the outer shell when the concrete molded products are joined to each other is exerted on the elastic adhesion to the joint end surfaces of the concrete molded products. The feature that was characterized by was adopted.

[0011]

[Embodiment of the invention]

 Hereinafter, a specific example of the first embodiment of the present invention applied to a side groove block as a concrete molded product will be described with reference to FIGS. Reference numeral 1 denotes one side of an engaging portion 4 formed of a soft material such as synthetic resin or rubber and engaged in an engaging hole 3 provided in a joint end face 2a of one member A1 of a concrete molded article A to be joined. The sealing material body 1 is provided on the other side with elasticity between the above-mentioned concrete molding A and the joining end face 2b of the other member B1 of the other concrete molding B. An elastic seal portion 5 to be pinched is provided in a direction Z crossing the insertion direction X of the sealing material main body 1.

The engaging portion 4 is formed with a locking piece 6 having a desired shape to be locked in the engaging hole 3 of the concrete molded product A. In the figure, the locking piece 6 is formed in the shape of an arrow so that it can be easily inserted into the engaging hole 3, and once inserted, does not move carelessly or falls off, and the joining end face 2a of the concrete molded product A does not fall off. It can be quickly and securely mounted at a predetermined position. In order to secure the engagement with the engagement hole 3, the engagement portion 4 is provided with a desired angle θ at a rear portion of the engagement piece 6 as shown in FIG. In some cases, a plurality of, for example, two locking lip portions 7 are formed at an angle.

A flexible portion 8 is provided between the engagement portion 4 and the elastic seal portion 5 so as to be flexible in a direction Z intersecting with the insertion direction X.

The engaging hole 3 is adapted to one of the joining end surfaces 2a, 2b of the gutter blocks as the concrete molded articles A, B to be joined, and for example, as shown in FIG. As shown in FIG. 1, the inner shape may be formed in a substantially trapezoidal cross section of the constriction, or although not shown, a small diameter portion is formed facing the joint end surfaces 2 a and 2 b, but the inside is enlarged. It may be formed in a large hole.

Further, the elastic seal portion 5 has an elastic cross section having an appropriate shape as shown in FIG. 1 and FIG. 2, for example, a hollow shape having an air buffer portion 5b inside a semicylindrical outer shell portion 5a. Although formed to have the desired thickness t, the present invention is not limited to this. For example, it may be formed to have a solid structure having the desired thickness t as shown in FIG. The elastic seal portion 5 formed in a hollow shape as described above is provided with the elastic force of the outer shell portion 5a itself and the air buffer portion 5b provided in the outer shell portion 5a when the concrete molded products A and B are joined to each other. The cushioning force of the concrete moldings A and B is cooperatively exerted on the joint end surfaces 2a and 2b.

In FIG. 5, reference numeral 9 denotes a connecting pin as fixing means for connecting the side groove blocks as concrete molded products A, B,... 9a, and the front half 9b and the rear half 9c are formed so as to be inclined for a while. Then, the first half 9b and the second half 9c of the connecting pin 9 are press-fitted into the joint holes 10 provided corresponding to the joint end surfaces 2a, 2b of the side groove blocks as the concrete molded articles A, B to be joined. Thus, the concrete molded products A and B are connected to each other. However, the fixing means of the concrete molded products A and B are shown by way of example, and are not limited thereto. For example, the fixing means is provided across the joint end surfaces 2a and 2b of the concrete molded products A and B over the axial length. The connection may be made using bolts and nuts.

The first embodiment of the present invention is constituted as described above. In order to join the gutter blocks as concrete molded products A, B,. A mating member provided on one side of a sealing material main body 1 formed of a soft material such as synthetic resin or rubber in a substantially U-shaped engaging hole 3 formed in one of the joining end surfaces 2a and 2b of A and B. The sealing member main body 1 is locked by pressing the joint portion 4 against elasticity, and the sealing member main body 1 is attached to a predetermined position of the concrete molded product A. Accordingly, the seal material body 1 is prevented from being inadvertently moved or dropped with respect to the concrete molded product A, so that the concrete molded products A and B are joined to each other and water is stopped. When the engaging portion 4 of the sealing material body 1 is to be locked in the engaging hole 3 of the concrete molded product A or B, a grouting agent or an adhesive is inserted into the engaging hole 3. It may also be used together with the above to make the structure more robust and exhibit water-stopping properties.

At this time, a plurality of, in FIG. 7, two locking lip portions 7 are provided at the rear portion of the locking piece 6 of the engaging portion 4 with a desired angle θ as shown in FIG. Is formed, the engaging portion 4 and the locking lip portion 7 are locked in the engaging hole 3, so that the locking in the engaging hole 3 is further ensured. In addition, any of the joint holes 10, 10 provided corresponding to the joint end surfaces 2a, 2b of the gutter blocks as the concrete molded products A, B to be joined, for example, a member provided in the concrete molded product A The first half 9b of the connecting pin 9 is pressed into the mating hole 10 to prepare for joining.

Next, when the other member B1 of the concrete molded product B having the joint end surface 2b joined to the joint end surface 2a of the one member A1 of the concrete molded product A is brought close to the engagement hole 3, The rear surface of the sealing material main body 1 in which the engaging portion 4 is engaged is elastically pressed by the joint end surface 2a of the concrete molded product B.

When the rear surface of the sealing material main body 1 is pressed by the joint end surface 2 a of the concrete molded product B, the engaging portion 4 provided on one side (the distal end side) is further locked in the engaging hole 3. The elastic seal portion 5 having a desired thickness t provided on the other side (rear end side) in the direction Z intersecting with the insertion direction X is elastically flattened as shown in FIG. It is elastically pressed between the joint end face 2a of the molded article A and the joint end face 2b of the other concrete molded article B.

At this time, as shown in FIG. 1, the elastic seal portion 5 is formed into a hollow shape having an elastic section 5a having an elastic shape and having an air buffer portion 5b inside a shell-like outer shell portion 5a. In this case, the hollow elastic seal portion 5 compresses the elastic force of the outer shell portion 5a itself and the air buffer portion 5b provided in the outer shell portion 5a when the concrete molded products A and B are joined to each other. The elastic sealing portion 5 is reliably brought into close contact with the joint end surfaces 2a and 2b of the concrete molded products A and B by cooperating with the cushioning force at the time, and exhibits sufficient water stopping performance. Further, even when the elastic seal portion 5 is formed in a solid structure having a desired thickness t as shown in FIG. 6, for example, the sandwiched end surfaces 2a and 2b of the concrete molded products A and B are sandwiched. It is firmly adhered by pressure and exhibits sufficient water stopping properties.

Further, the concrete molded articles A and B to be joined may be offset from each other in the directions Y and Z where the shaft cores intersect the insertion direction X with respect to the insertion direction X to generate a step, or at a curved portion. Even when the above-mentioned joining is performed, a flexible portion 8 is provided between the engaging portion 4 and the elastic seal portion 5 so as to be flexibly intersected in the insertion direction X. When the flexible portion 8 bends, the joint end surfaces 2a, 2b between the concrete molded products A, B are pressed, and the elastic seal portion 5 is pressed against the joint end surfaces 2a, 2b between the concrete molded products A, B. There is no uneven distribution, and the water stoppage is reliably exhibited.

The front half part 9b and the rear half part 9c of the connecting pin 9 are provided in joint holes 10, 10 provided corresponding to the joint end faces 2a, 2b of the side groove blocks as the concrete molded articles A, B to be joined. Are press-fitted, the concrete molded products A and B are connected to each other.

FIG. 8 shows a second embodiment of the present invention. In this embodiment, engaging portions 4, 4 are provided on both sides of the sealing material main body 1, and the engaging portions 4, 4 are provided substantially corresponding to the joining end surfaces 2a, 2b when the concrete molded products A, B are joined. The elastic seal portion 5 provided in the direction Z intersecting with the insertion direction X of the sealing material main body 1 is engaged between the engagement holes 3, 3 and pressed between the joint end surfaces 2a, 2b of the concrete molded products A, B. The configuration and operation are the same as those of the first embodiment, except that the water blocking property is exhibited by doing so.

In the above description, the case where the joining work of the gutter block and the water stopping operation are performed as the concrete molded products A and B are typically described. However, the concrete molded products A and B are not limited to this, and may be, for example, U-shaped grooves. Water-based underground structures such as blocks, culvert blocks, waterway blocks, sewer pipes, etc., and civil engineering materials as ground structures such as tunnels and retaining wall blocks, as well as building materials such as outer wall panels, inner wall panels, and slab plates. Even in the case of a concrete molded product, the waterproofness between the joining end faces and the joining can be reliably performed by a simple handling operation.

[0026]

[Effect of the invention]

 As described above, the invention according to claim 1 of the present invention is formed of a soft material such as synthetic resin or rubber, and is locked in the engagement hole provided in the joint end surface of one member of the concrete molded product to be joined. An engaging portion is provided on at least one side of the sealing material main body, and the sealing material main body is elastically connected between one of the concrete molded articles and the joining end face of the other member of the other concrete molded article. The elastic seal part which is sandwiched in the seal material is provided so as to cross over in the insertion direction of the sealing material body, so that the waterproofness between the concrete molded products to be joined is sufficiently ensured, and at the time of installation The seal material body is quickly and securely attached to the specified position without inadvertently moving or falling off the joint end surface of the concrete molded product, so that the water tightness and joining work between concrete molded products are efficient. Done, is improving the work efficiency, construction costs, material costs, production costs is what is excellent inexpensive and earthquake resistance.

According to a second aspect of the present invention, in the first aspect, the engaging portion is a locking piece having a desired shape to be locked in an engaging hole of the concrete molded product. It is characterized by being formed by a plurality of locking lip portions provided at a desired angle as necessary at the rear portion of the locking piece portion, so that the locking piece portion and the locking lip are provided in the engagement holes. The engagement with the engaging portion is ensured, and the engagement of the engaging portion is assured, so that the sealing material main body comes out of the engaging hole and the waterproofness is assured.

According to a third aspect of the present invention, in any one of the first and second aspects, the engaging portions are provided on both sides of the sealing material main body. The engaging portion is locked in the engaging hole provided substantially corresponding to the joining end surface of the molded product, and the elastic seal portion provided in the insertion direction of the sealing material body is pressed between the joining end surfaces of the concrete molded products. The water is stopped.

According to a fourth aspect of the present invention, in any one of the first, second, and third aspects, a space between the engagement portion and the elastic seal portion in the insertion direction is provided. Since the flexible portion is provided so as to be able to intersect and be flexible, the step of the concrete molded articles to be joined is eccentric in the direction crossing the insertion direction. When the joint is made at a curved part, the flexible part bends, and the elastic seal part sandwiched between the joint end faces of the concrete molded articles is pressed against the joint end face of the concrete molded articles. Without uneven distribution, the water stoppage is surely exhibited.

According to a fifth aspect of the present invention, the elastic seal portion according to any one of the first, second, third and fourth aspects has an appropriate cross section having a desired thickness. Or formed in a hollow shape having an air buffer portion inside an outer shell portion having elasticity, and the invention according to claim 6 is characterized in that: The hollow elastic seal portion according to any one of claims 3, 4, and 5, wherein the hollow elastic seal portion includes an elastic force of the outer shell itself when the concrete molded products are joined to each other and an air buffer provided in the outer shell. It is characterized in that the elastic sealing force on the joint end surface with the cushioning force of the concrete molded product and the joint end surface is exhibited in cooperation with each other. Elastic force and air provided in the outer shell By the damping force when 衝部 is compressed is exerted cooperate elastic sheet Lumpur portion is reliably brought into close contact with the joining end face of the concrete moldings each other to exhibit sufficient water stopping. In addition, even when the elastic seal portion is formed in a solid structure having a desired thickness, the elastic seal portion is pressed tightly between the joint end surfaces of the concrete molded products and firmly adheres to each other, and sufficiently exerts water stoppage.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a first embodiment of a waterproof sealing material for a concrete molded product of the present invention.

FIG. 2 is a cross-sectional view of the concrete molded product when it is joined together.

FIG. 3 is a side view showing a gutter block as a concrete molded product used in the present embodiment.

FIG. 4 is a front view showing a gutter block;

FIG. 5 is a cross-sectional view showing a state in which the joining end faces of the concrete molded product are fixed to each other using a connecting pin as a fixing means.

FIG. 6 is a sectional view showing another modified example of the sealing material body.

FIG. 7 is a sectional view showing a third modified example of the sealing material body.

FIG. 8 is a cross-sectional view showing a second embodiment of the present invention.

FIG. 9 is a side view showing an example of a conventional water stopping method for a concrete molded product.

FIG. 10 is a side view showing another example of the conventional water stopping method for a concrete molded product.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Seal material main body 2a Joining end face 2b Joining end face 3 Engagement hole 4 Engagement part 5 Elastic seal part 5a Outer shell part 5b Air buffer part 6 Locking piece part 7 Locking lip part

Claims (6)

[Utility model registration claims] An engaging portion formed of a soft material such as synthetic resin or rubber and engaged in an engaging hole formed in a joining end surface of one member of a concrete molded product to be joined is provided on at least one of a sealing material main body. And an elastic seal portion elastically pressed between one of the concrete molded products and the joining end surface of the other member of the other concrete molded product is inserted into the sealing material main body. A waterproof sealing material for a concrete molded product, wherein the sealing material is provided so as to cross each other. 2. The method according to claim 1, wherein the engaging portion includes a plurality of engaging pieces each having a desired shape to be locked in the engaging hole of the concrete molded product, and a desired angle formed at a rear portion of the engaging piece as required. The waterproof sealing material for a concrete molded product according to claim 1, wherein the sealing material is formed by a locking lip portion provided with the sealing lip. 3. The sealing material according to claim 1, wherein the engaging portions are provided on both sides of the sealing material main body. 4. A flexible portion, which is provided between the engaging portion and the elastic seal portion so as to intersect in the insertion direction and to be flexibly provided. The waterproof sealing material for a concrete molded product according to any one of claims 2 and 3. 5. The elastic seal portion may be formed in an appropriate shape in cross section having a desired thickness, or may be formed in a hollow shape having an air cushion portion inside an outer shell portion having elasticity. The waterproof sealing material for a concrete molded product according to any one of claims 1, 2, 3, and 4. 6. The hollow elastic seal portion has an elastic force of an outer shell portion itself when the concrete molded products are joined to each other, and elastically adheres to an end face of the concrete molded products joined to an air buffer provided in the outer shell portion. Claim 1, Claim 2, Claim 3, Claim 4, wherein the force is exerted in cooperation.
A waterproof sealing material for a concrete molded product according to claim 5.