JPH05164276A - Method for bonding joint to sewer pipe - Google Patents

Abstract

PURPOSE:To absorb a vibration or the like transmitted from the ground with the rubber-like elastic body of an adhesive agent, and eliminate the occurrence of an accident such as a crack and a fracture at a joint section by using a rubber-like elastic adhesive agent for bonding a joint to a sewer pipe body. CONSTITUTION:A plastic or concrete sewer pipe body 2 has a through-hole 4 at a position where a joint 6 is mounted. On the other hand, the joint 6 made of plastic or concrete is constituted of a joint body 8, an upper end insertion section 12 where another sewer pipe is inserted, and a lower end insertion section 14 for insertion in the through-hole 4 and a curved section 16 having a curved surface agreeing to the external curved surface of the sewer pipe body 2. In this constitution, when the joint 6 is coupled to the sewer pipe body 2, a rubber-like elastic adhesive agent A is applied to the lower side of the curved section 16 and around the through-hole 4. Thereafter, both of the joint 6 and the body 2 are pressed to each other and fixed, while the adhesive agent A is cured. As a result, a vibration or the like from the ground can be absorbed by the rubber-like elastic body of the adhesive agent A, and the fracture or the like of a joint section can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of adhering a joint to a sewer pipe which is extremely useful when adhering the joint to a sewer pipe body made of plastic or concrete.

[0002]

2. Description of the Related Art Epoxy adhesives have hitherto been used in a method of bonding a joint to a plastic sewer pipe or a concrete sewer pipe (fume pipe). Epoxy adhesives have high mechanical strength and excellent dimensional stability,
It also has excellent water resistance and chemical resistance, and has been considered to be the most suitable for this type of bonding method.

However, the advantage that the rigidity is high, on the other hand, has also been a drawback that there is no elasticity. On the other hand, it is difficult to avoid the vibration of the ground surface caused by automobiles etc. being transmitted to the sewer pipe made of plastic or concrete buried in the ground in the area with heavy traffic like today. The sewer pipe also vibrated. In addition, when ground subsidence occurs due to an earthquake, it is unavoidable that the sewer pipes in the ground will be distorted.

Since the adhesive between the main body of the sewer pipe and the joint is made by using an epoxy adhesive, the bonded portion between the main body of the sewer pipe and the joint does not have elasticity, and the vibration or ground as described above is used. Accidents such as sewage pipes cracking or cracking at joints with their joints often occur due to strain due to subsidence.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method for adhering a joint to a sewer pipe which eliminates the occurrence of cracks at the joint between the sewer pipe body and the joint. Is.

[0006]

In order to solve the above-mentioned problems, the present invention uses a rubber-like elastic adhesive as an adhesive when the joint is adhered to the main body of the sewer pipe.

As the rubber-like elastic adhesive, it is preferable to use a silicone adhesive, a modified silicone adhesive, a urethane adhesive or a polysulfide adhesive.

The elongation of the rubber-like elastic adhesive is preferably 20% or more, particularly preferably 50% or more from the viewpoint of absorbing strain, and either one-component type or two-component type may be used. it can. All of the above rubber-like elastic adhesives are available as commercial products, and specific examples thereof will be described below.

As a silicone-based adhesive, 8060
(One-component silicone adhesive manufactured by Cemedine Co., Ltd.) and SE792 (two-component silicone adhesive manufactured by Toray Dow Corning Silicone Co., Ltd.) can be mentioned.

As the modified silicone adhesive, PM-
100 (manufactured by Cemedine Co., Ltd., one-pack modified silicone adhesive) and PM-200 (manufactured by Cemedine Co., two-pack modified silicone adhesive) are known.

Examples of urethane adhesives include Auto Adha 5000 (manufactured by Auto Kagaku Kogyo KK, one-component urethane adhesive) and S-750 (Cemedine KK, two-component urethane adhesive). .

Examples of the polysulfide-based adhesive include policy I (manufactured by Cemedine Co., Ltd., one-pack type polysulfide-based adhesive) and policyl (manufactured by Cemedine Co., Ltd., two-pack type polysulfide-based adhesive).

The rubber-like elastic adhesive used in the present invention is
Not only does it function as an adhesive agent, but it also needs to have a function of sealing the bonded part between the vinyl chloride sewer pipe body and the joint, and not having an accident such as water leakage. is there.

The material of the sewer pipe and the joint to which the present invention is applied is not particularly limited, but it is known as a conventionally known hard vinyl chloride, plastic such as FRP, or a fume pipe. It is made of concrete.

[0015]

An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 2 is a sewer pipe body made of plastic (hard vinyl chloride, FRP, etc.) or concrete, and a through hole 4 is opened in a portion where a joint is bonded. 6 is plastic (hard vinyl chloride, FRP, etc.)
Made of concrete or concrete, the joint body 8, an upper end insertion portion 12 for inserting another sewer pipe 10 provided at an upper end portion of the joint body 8, and a lower end insertion through the through hole 4. It is composed of a portion 14 and a curved portion 16 protruding laterally from the vicinity of the lower end portion and having a curved surface that matches the curved surface of the outer periphery of the sewer pipe body 2.

To attach the joint 6 to the through hole 4 of the sewer pipe body 2, a rubber-like elastic adhesive A is applied to the lower surface of the curved portion 16 and / or the peripheral portion of the through hole 4 to apply both of them. It may be pressed and fixed to cure the adhesive.

Since this rubber-like elastic adhesive has rubber-like elasticity even after being hardened, the sewer pipe main body 2 and the joint 6 are joined together via the rubber-like elastic body, and therefore, from the ground. Even if the vibration is transmitted to the joint portion, the vibration is absorbed by the rubber-like elastic body, and an accident such as cracking or cracking at the joint portion does not occur.

The structure of the joint 6 is shown as an example, and it goes without saying that the present invention can be applied to various joint structures. Further, the joint 6 may be integrally formed, or each portion of the joint, for example, the curved portion 16 may be separately formed and bonded to the joint main body 8 with an adhesive. In this case, it is of course preferable to use a rubber-like elastic adhesive as the adhesive from the viewpoint of strain absorption.

[0019]

As described above, according to the present invention, the rubber-like elastic adhesive is used to bond the joint to the main body of the sewer pipe. It is possible to achieve a great effect that it is possible to eliminate the occurrence of cracks and cracks in the joint portion due to strain during subsidence.

[Brief description of drawings]

FIG. 1 is an explanatory cross-sectional view showing a bonding structure between a sewer pipe and a joint in which the method of the present invention has been carried out.

[Explanation of symbols]

 2 Sewage pipe body 4 Through hole 6 Joint 8 Joint body 12 Upper end insertion portion 14 Lower end insertion portion 16 Curved portion A Rubber-like elastic adhesive

Claims (4)

[Claims] 1. When bonding a joint to a sewer pipe body,
A method for adhering a joint to a sewer pipe, characterized in that a rubber-like elastic adhesive is used as an adhesive. 2. The sewer pipe joint according to claim 1, wherein the rubber-like elastic adhesive is a silicone-based adhesive, a modified silicone-based adhesive, a urethane-based adhesive, or a polysulfide-based adhesive. Bonding method. 3. The method for adhering a joint to a sewer pipe according to claim 1, wherein the rubber-like elastic adhesive has an elongation of 20% or more. 4. A bonding structure between a sewer pipe main body and a joint, which is bonded by the bonding method according to any one of claims 1 to 3.