JPS60155584A - Impregnation - 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 method for impregnating, for example, a structure or the like with a resin monomer-based impregnating material.

As is well known, when concrete or other porous materials (hereinafter referred to as concrete etc.) are impregnated with a resin monomer-based impregnating material, the following method has conventionally been adopted.

1) A material such as concrete is stored in a container, and the impregnating material is injected into the container while the pressure is reduced or at normal pressure. If the pressure is reduced, once the pressure is returned to normal pressure, the surface of the material is Method of impregnating impregnating material from.

2) In the case of large parts that cannot fit into containers, buildings, and structures; in the case of concrete, etc., the horizontal part stores the impregnating material on the surface of the part, and the vertical part is separated from the part by a predetermined distance to maintain watertightness. A method in which a temporary frame is provided, an impregnating material is stored between the temporary frame and the surface of the member, and the impregnation material is impregnated from the surface.

However, the above-mentioned re-impregnation method has the following drawbacks. That is, in the case of 1), a large pressurized tank is required;
Moreover, there are restrictions on the dimensions of the members that can be accommodated within this tank. In addition, in 2), when impregnating the vertical portion of the member, it is necessary to provide a temporary frame, which requires a great deal of labor. Moreover, in this case, it is necessary to take measures to prevent evaporation and ignition of the expensive impregnating material during impregnation, and it is difficult to collect and reuse the impregnating material filled in the storage or watertight temporary frame after impregnation. Ta.

In addition, in the case of 1) and 2), since the impregnation is from the surface of the member, it is difficult to impregnate the center of the large member.
In the case of normal pressure impregnation, there is a problem that air is concentrated in the center and an unimpregnated area remains. Furthermore, thermal polymerization is carried out after completion of the impregnating process, but in the case of 2), measures are required to prevent the impregnating material from evaporating and catching fire, which requires time and effort.

This invention was made based on the above circumstances, and its purpose is (a) to be able to impregnate an impregnating material without being restricted by the size of the material to be impregnated, and to make it possible to impregnate the material without being impregnated inside. It is an object of the present invention to provide an impregnation method in which no core remains and there is no risk of evaporation of the impregnating material or ignition during impregnation.

An embodiment of the present invention will be described below with reference to the drawings.

In the drawings, the impregnated material 11 is, for example, a concrete structure. First, holes are made in the impregnated material 11 at predetermined locations using a drill or the like in consideration of the thickness of the impregnated material, and the impregnating material injection pipes 12 are respectively inserted into these holes. The area around the opening of the hole is grouted with, for example, polyester resin mortar 13 shown in Table 1, and this pipe 12 is fixed. Next, a transparent polyester coating material 14 shown in Table 2, for example, is applied to the outer surface of the material 1 to be impregnated. After that, the *-st is attached to the pipe 12, and the impregnating material 16 shown in Table 3 is applied, for example, to the pipe 12 through the hose 15 and pipe 12.
The material to be impregnated 11 is impregnated using the height difference. Then, the impregnation is completed when the impregnating material 16 is impregnated from the inside to the outer surface of the material 11 to be impregnated, and this is visually confirmed through the coating material 14. After this, thermal polymerization using infrared rays, an electric blanket, hot water, etc., or radiation polymerization using radiation is performed.

According to the above embodiment, the pipe 12 is inserted into the material 11 to be impregnated, and the inner wall of the material 11 to be impregnated is impregnated with the impregnating material 16 through the pipe 12. Therefore, there is no unimpregnated portion left inside the material to be impregnated, unlike in the past, and it is possible to impregnate even large materials by increasing the number of buried pipes 12). It has the advantage of not being restricted by the size of the material to be impregnated.

Furthermore, the surface of the impregnated material 11 is coated, and the inside is impregnated with an impregnating material 16. therefore,
It is economically advantageous because the amount of impregnating material 16 required for impregnation can be minimized and the remaining impregnating material can be easily recovered and reused.

Furthermore, since the surface of the material to be impregnated 11 is coated, there is no risk of evaporation or ignition during impregnation or polymerization work, and the completion of impregnation can be visually confirmed through the coating material 14, making it easy to carry out the work. Good properties.

In addition, FIG. 2 shows the result of impregnating and polymerizing a concrete floor slab of a building using this method, and then measuring its rebound hardness using a Schmidt hammer. Figure (a) shows the results before construction, and Figure (b) shows the results after construction, and the New Year's visit impregnation effect was confirmed.

Further, in the above embodiments, a transparent coating material is used, but the coating material is not limited to this, and an opaque coating material may be used. In this case, the completion of impregnation can be determined by the remaining amount of impregnating material.

As described in detail above, according to the present invention, it is possible to impregnate an impregnating material without being restricted by the size of the material to be impregnated, and moreover, no unimpregnated core remains inside, and during impregnation, For example, it is possible to provide an impregnation method that does not pose the risk of evaporation or ignition of the impregnating material.

Table 1 Grouting material (weight %) Table 2 Coating material (weight %) Table 3 Impregnating material (weight %) UP: Unsaturated polyester resin MEKPO: Methyl ethyl ketone peroxide (catalyst) CoOc: 8% of cobalt octoate Miner
alTurpent ine solution (accelerator) MMA:
Methyl methacrylate monomer TMPTMA: ) Limethylolpropane trimethacrylate (crosslinking agent) AIBN: 2-2'azobisinbutyronitrile (
*) Silane coupling agent

[Brief explanation of the drawing]

The drawings show one embodiment of the impregnation method according to the present invention, and Fig. 1 is a schematic diagram showing a partial cross section, and Fig. 2 is a diagram for explaining the rebound hardness before and after construction. be. 11... Material to be impregnated, 12... Pipe, 14... Coating material, 16... Impregnating material.

Claims (1)

[Claims] When impregnating a porous material to be impregnated with an impregnating material, the surface of the material to be impregnated is coated in advance, and then the impregnating material is impregnated from the inside of the material to the surface. Impregnation method.