JPS61233103A - Repairing of iron lid peripheral part protruded from paving surface - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a construction method for forming an inclined wall around the periphery of a case for an iron lid that protrudes from a paved surface such as a road.

(Prior Art) For example, on the paved road surface (21) shown in FIG. 6, there is a
An iron lid case (22) with an iron lid (22) on the top that can be opened and closed.
23) is buried, and its upper surface was originally the S road surface (2
It is on the same plane as 1).

This iron lid case (23) protrudes above the road surface (21) by a height H due to road surface subsidence due to the passage of large vehicles, natural subsidence, or due to adjustments made in road paving, etc. It often happens.

This protruding iron lid case (23) may cause an accident in which a motorcycle or bicycle falls down, or a pedestrian trips. In order to prevent this, an inclined wall having a triangular longitudinal section is generally provided around the iron lid case (23).

Previously, construction of this sloped wall was a temporary solution by applying asphalt compound.

(Problems to be Solved by the Invention) In the conventional construction method for inclined walls, heating the asphalt compound and wiring work are complicated, and the surrounding area of the iron cover case is also heated. This requires tedious work such as applying asphalt compound to the surface and compacting it using a compaction machine, and it also takes a long time, making it difficult to carry out unless the number of construction sites is organized to a certain extent, and the required response will be delayed. There is a problem.

(Means for solving the problems) The present invention consists of a cylindrical body whose upper part is opened and closed by an iron lid,
A sloping wall with an approximately triangular vertical cross-section, which is inclined upward from the pavement surface at an appropriate angle, is attached to the periphery of the case for the iron lid, which protrudes upward from the pavement surface, using hardening resin,
The present invention provides a method for constructing an inclined wall around the periphery of an iron lid case, which is formed by applying a compound containing a hardening agent and a filler as main components.

The angle of inclination referred to here refers to the angle formed by a straight line from the pavement surface to the upper end of the iron cover, and since construction is done by hand, it may curve inward or outward.

(Function) According to the present invention, a compound containing a curable resin, a curing agent, and a filler as main components is applied to the periphery of the iron lid case and cured at room temperature in a relatively short time. It is possible,
Even for a small number of construction sites, it is possible to easily transport compounding agents and other tools and perform construction work.

(Example) Hereinafter, an example of the present invention will be described based on FIG.

Necessary equipment (not shown) used for water supply, gas, telephone, etc. is arranged below the pipe (2) buried in the road surface (1). At the top of the pipe (2) is an iron lid case (made of a cylindrical body housing an iron lid (3) that can be opened and closed).
4) is provided. This iron lid case (4) is in a state of protruding upward from the road surface (1) by an amount H for the reason mentioned above.

In the corner (5) formed by the iron lid case (4) and the road surface (1), a compounding agent (6) (see Fig. 2), which will be described later, is applied.
Using a trowel, a spatula, etc., the coating is applied so that the longitudinal cross-sectional view forms a triangular shape, thereby forming an inclined wall ( ). The angle of inclination (θ) of the inclined wall (7) with respect to the road surface (1) is usually 5.
If the inclination angle (θ) is less than 5°, the inclined wall (7) will become thinner and the strength will not be maintained; If the angle is above @, the angle is too steep and the above-mentioned accident may not be prevented.

The angle of inclination referred to here refers to the angle formed by a straight line from the pavement surface to the upper end of the iron cover, and since construction is done by hand, it may curve inward or outward.

Figures 2 and 3 show an alternative means of applying the formulation (6) to the corners (5).

The lower edge of the molded plate (8) is the horizontal part (
8a), and a downwardly inclined part (8b) at an appropriate inclination angle (θ) from the upper edge of the iron lid case (4),
At the end of the horizontal part (8a), a downwardly directed shaft (9) is integrally formed and fits loosely into a hole (3a) provided in the center of the iron lid.

After applying an appropriate amount of the compounding agent (6) to the corner (5), the molded plate (8) is moved in the direction of the arrow with the axis (9) as the center as shown in Figures 2 and 3. By rotating, a sloped wall (7) having a constant slope angle (θ) is smoothly formed at the corner portion (5).

4 and 5 show a conical cover (11) that temporarily covers the iron lid and its surrounding area.

A flange (lla) provided on the outer periphery of the cover (11)
) is installed at the hole (12) position, and the locking rivet (1
3) into the road surface (1), the inclined wall (7)
Even if the iron lid (3) is not hardened, it is possible to pass over the iron lid (3), and the traffic blockade can be immediately lifted. It is desirable that the upper surface of this cover (11) is provided with unevenness to prevent slipping.

The above-mentioned compounding agents are usually a two-component curing resin and a curing agent.

The main component is a filler, and if necessary, fibers, hardening accelerators, color pigments, etc. may be added in addition to the above main components.

The above two-component curing resin includes epoxy resin, urethane resin,
Silicone resin, etc. Among these, preferred are epoxy resins with excellent adhesive properties and quick curing, such as bisphenol A diglycidyl ether, hydrogenated bisphenol A diglycidyl ether, and the like. The amount of this cured resin used is 20% by weight (hereinafter referred to as
(simply referred to as %) or more and less than 40%, preferably 2
It ranges from 3% to 35%. The above usage fee.

If it is less than 20%, the impact strength will be low, which is not preferable.

Moreover, if it exceeds 40%, there is a problem that sagging occurs during construction, resulting in poor workability.

According to the present invention, the object of the present invention is achieved by not causing sag during blending and having sufficient strength.

The curing agents used in the above compounding agent include aliphatic polyamines, polyamidoamines, modified products thereof, room temperature curing agents, and wet surface curing agents, and these may be used alone or in a mixture of two types. The amount of curing agent used varies depending on the amount of resin used.

Usually 5% or more and less than 20%, preferably 8 to 1
It is 5%.

A large amount of filler is usually used in the formulation. Examples of fillers include talc and silica sand.

Clay, granular stone, etc. are used, and the amount used is 40% or more and less than 75%, preferably 50% or more and less than 70%. In addition, fibers may be added to increase impact strength, such as glass fibers, vinylon fibers,
It is made of nylon fibers, amorphous inorganic fibers, etc., and the amount used is 1% or more and less than 10%, preferably 3 to 7%.

Next, we will discuss the results of actual construction using the proportions of compounding agents shown below.

Bisphenol A type diglycidyl ether 25% Modified aliphatic polyamide amine 10% No. 5 silica sand 60% Mineral fiber 5% Mix the ingredients made in the above proportions evenly and make a case for the iron lid of the gate valve of a 150Φ water supply. However, when the compound was applied using a lever or the like to form a sloped wall with an inclination angle (θ) of 15° on a surface that was raised 20° above the road surface, it was found that the application temperature was 30°C. It hardened in 1 hour. After that, the traffic blockade was immediately lifted and practical tests were continued, and even after 6 months, there were no abnormalities such as deformation or cracks.
There were no falls or slips of motorcycles or tripping accidents of pedestrians.

The formulation of the present invention can achieve the desired purpose by sufficiently mixing the curable resin, curing agent, and filler. By preparing a putty-like material B in advance, which is a mixture of a hardening agent, the remainder of the filler, and a hardening agent accelerator, and mixing the above materials A and B at the time of construction, the construction work can be carried out. It is convenient because it can be carried out in a short time without scattering the powder material.

(Effects of the invention) As described above, according to the present invention, a compound containing an effective resin, an effective agent, and a filler as main components is applied to the peripheral part of the iron lid case that protrudes from the road surface. By doing so, an inclined wall can be effectively formed. In other words, since the above-mentioned compounding agent has a fast curing property, there should be little traffic interruption time.

Iron lids have excellent properties such as good adhesion to steel, asphalt, and concrete, high compressive strength, high impact strength, and can be installed by anyone without special skills. It is useful for constructing sloped walls around the periphery of a case.

[Brief explanation of the drawing]

In FIG. 1, the present invention was applied. FIG. 2 is a longitudinal sectional view of an inclined wall formed around the periphery of the iron lid case, FIG. 2 is a longitudinal sectional view of the slanted wall formed around the iron casing by a molded plate, and FIG. 3 is a wall surface view. FIG. 4 is a longitudinal sectional view of the cover, FIG. 5 is a wall view, and FIG. 6 is a side view of the iron lid case protruding from the road surface. (1) Road surface (2) Pipe (3) Iron lid (4) Case for iron lid (5) Corner (6) Compounding agent (7) Slanted wall
(8) Molded plate (9) Shaft (11) Cover (12) Mounting hole (13) Rivet (21)
) Road surface (22) Iron lid (23) Case for iron lid

Claims (1)

[Claims] It consists of a cylindrical body whose upper part is opened and closed by an iron lid, and has an appropriate upward inclination angle from the pavement surface with respect to the peripheral part of the iron lid case that protrudes above the pavement surface, and whose vertical cross-sectional shape is approximately A method for constructing a sloped wall around the periphery of a case for an iron lid, the method comprising forming a triangular sloped wall by applying a compound containing a curable resin, a curing agent, and a filler as main components.