JPH048399B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of impregnating an inorganic cured body with a resin, for example, by impregnating the inorganic cured body with a monomer-based impregnating material and curing the body, and in particular, it relates to a method for impregnating an inorganic cured body with a resin, and in particular, removing unimpregnated material remaining on the surface of the cured body. Concerning what excludes.

As is well known, when an inorganic cured material such as concrete is impregnated with a monomer-based impregnating material that converts into a resin and then polymerized and cured, the following method has conventionally been used. That is, the cured product is kept at room temperature, the impregnating material is stored on the surface of the cured product at a depth of, for example, 2 to 4 cm, and the impregnating material is impregnated from the surface of the cured product to a depth of 2 cm or more. After the impregnation is completed, the impregnating material remaining on the surface of the cured product is collected. This recovered impregnating material can be reused if it is stored in a cooled state.
Thereafter, the cured product is heated for several hours using an electric blanket, hotbed wire, hot air, or other suitable method (do not use a direct open flame as the impregnating material will catch fire) to polymerize the impregnating material. According to this method, predetermined impregnation,
Can perform curing work. However, this method has the problem that the impregnation process, the recovery process of unimpregnated material, and the heating polymerization process are complicated, and that temporary equipment and work time are required.

Therefore, a method has been considered in which the cured body is heated to a predetermined temperature in advance, and an impregnating material is stored and impregnated on the surface of the cured body and polymerized. In this case, the impregnating material remaining on the surface of the cured product without being impregnated at the start of polymerization starts to gel all at once, so it is necessary to quickly remove it using a scoop or the like before it hardens. However, if the impregnated area is large, one worker can only remove the area other than the impregnated part, which is within the range of about ^3m2 that can be reached while standing, so the remaining part will be completely hardened and removed. It has the disadvantage that it cannot be used.

Furthermore, a method has been devised in which the impregnating material is sprinkled little by little on the surface of the cured product so that the impregnating material does not remain on the surface of the cured product. However, in this case, since no pressure is applied to the impregnating material, the impregnating material has a drawback that it is difficult to impregnate the surface of the cured product.

This invention was made based on the above circumstances, and its purpose is to store and impregnate the surface of a cured product that has been heated to a predetermined temperature with an impregnating material, and to inject hot water into the surface of the cured product at the time of starting polymerization. By doing this, the impregnating material remaining without being impregnated onto the surface of the cured product is cured into a gel state, making it possible to remove the remaining impregnating material extremely easily and leaving the surface of the cured product in good condition. The purpose of the present invention is to provide a method for impregnating an inorganic cured material with a resin, which can be finished with a resin and has excellent workability and economical efficiency.

An embodiment of the present invention will be described below.

In this invention, the inorganic cured material, such as concrete or mortar, which is the material to be impregnated, is heated to a predetermined temperature in advance. This heating is performed using, for example, a gas burner, so the surface temperature of the inorganic cured material is
The temperature will be around 200℃, but it will be 100℃ inside 4-5cm from the surface.
It will be around ℃. If you leave it in this state for a while, the surface temperature will drop to about 100 degrees Celsius, but the internal temperature will not drop, and in this state the impregnation work will begin. That is, a monomer-based impregnating material that converts into a resin mainly composed of a vinyl monomer such as styrene or MMA [methyl methacrylate] is stored and impregnated on the surface of the cured product. As a storage method for monomer-based impregnating materials,
For example, a method is used in which a frame is set on the surface of the cured product so as to surround the impregnated portion, and the monomer-based impregnating material is placed within this frame. In this case, the composition of the impregnating material, the depth of the reservoir, and the heating temperature of the cured body are specified so that the impregnation material is impregnated to a depth of 2 cm or more from the surface of the cured body. Then, due to the heat of the hardening material, the impregnated part and the impregnating material remaining on the surface start polymerizing all at once (this may vary depending on the concrete temperature, air temperature, wind, type of impregnating material, etc.). After approximately 1.5 to 2 hours have elapsed, a large amount of hot water heated to as high a temperature as possible in the range of 65° C. or higher and 100° C. or lower is poured onto the surface of the cured product at once using, for example, a bucket. Then, the impregnating material that remains unimpregnated on the surface of the cured product and is in the process of gelling is mixed into the hot water, hardens into a gel-like state, and is released from the surface of the cured product. Further, the impregnating material impregnated into the cured body is heated by the injected hot water, and immediately polymerizes and hardens at that position. Since the impregnating material mixed in the hot water is hardened into a gel-like form without being released from the hardened material, it can be removed very easily by flushing with the hot water, sweeping it out, or other suitable means.

According to the above embodiment, the impregnating material is stored and impregnated on the surface of the cured body that has been heated to a predetermined position, and hot water is poured into the surface of the cured body at the time of starting polymerization, so that the surface of the cured body is not impregnated. The remaining impregnating material is more difficult to release than the cured material. Therefore, it is possible to remove the remaining impregnating material very easily, and compared to the conventional method of removing the remaining impregnating material using a scoop, etc., the removal is more reliable, and the cured product is completely removed. It is possible to finish the surface in good condition.

Furthermore, by adding hot water, it is possible to accelerate the curing of the impregnating material impregnated into the cured body.

In addition, it is economically extremely advantageous because fewer workers are required to remove the unimpregnated material and the working time can be shortened.

It should be noted that the present invention is not limited to the above embodiments, and for example, the temperature of the hot water may be changed as appropriate depending on the monomers used.

It goes without saying that various other modifications can be made without departing from the spirit of the invention.

As described in detail above, according to the present invention, it is possible to remove the impregnating material remaining without being impregnated onto the surface of the cured product very easily, and the surface of the cured product can be finished in a good condition, and the workability is improved. , it is possible to provide an economical method for impregnating an inorganic cured body with a resin.

Claims (1)

[Claims] 1. In a method of impregnating an inorganic cured body with a resin, the inorganic cured body heated to a predetermined temperature is impregnated with a monomer-based impregnating material that converts into a resin,
A method for impregnating an inorganic cured body with a resin, the method comprising: pouring hot water onto the surface of the cured body at the start of polymerization, and curing the impregnating material remaining on the surface of the cured body without impregnation into a gel form and removing it. .