JPH09193128A - Reproducing method of crosslinked polymer concrete mold frame - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve various performances, such as rigidity and the like, as well as the removal of slag by a method wherein a respective methacesis polymerizable cyclic olefin, containing a catalyst constituent of a methacesis polymerizing catalyst and an activating agent constituent of the catalyst respectively, is polymerized in a mold to form a mold frame by polymerizing and crosslinking reaction while the mold frame is treated by high-pressure washing water after using concrete. SOLUTION: A monomer solution, consisting of a methacesis polymerizable cyclic olefin containing a catalyst constituent of a methacesis polymer catalyst, and a monomer solution, consisting of respective methacesis polymerizable cyclic olefins containing an activating agent constituent of the catalyst respectively, are mixed. In this case, the mixed solution is poured into a mold to form a concrete mold frame through polymerizing and closslinking reactions. The mold frame is washed to reproduce the same by high-pressure washing water of higher than 200kg/cm<2> G and lower than 1,500kg/cm<2> G after using the same for placing concrete. According to this constitution, light weight property, assembling property, durability, nonpolluting property and the like can be improved and the removing property of slag can also be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention keeps the surface condition smooth when repeatedly using a concrete formwork having excellent durability, reduces the finishing repair of the placed concrete surface, and the work at the time of assembling. The present invention relates to a concrete formwork made of a molded cross-linked polymer, which enables reduction and maintenance of reproducibility of assembly accuracy.

[0002]

2. Description of the Related Art Wooden formwork has been the most commonly used concrete formwork in the past, and plastic formwork is gradually becoming popular in recent years.

However, the material for the wooden formwork has recently become difficult to obtain due to the movement to protect the rainforest, and the use of the material has been restricted by the government or local governments. Despite this, the wooden formwork has become unusable after being used several times and is currently thrown away. Further, not only such resource problems, but also the use of timber as a material for the formwork requires the work of pruning by a skilled worker, which causes the problem of manpower shortage.

In recent years, plastic molds have started to be used. Among them, the hand layup method FRP is used.
Has problems such as productivity and uniformity of quality.
When molding a thermoplastic resin by injection molding,
Problems such as the need for a large injection molding machine, one of the few in Japan, to make a large mold, and the need for many types of expensive molds to support molds of various shapes Have a

Further, a machined metal mold is the best in terms of durability as a material and accuracy in shape, but it is expensive and, above all, very heavy, so that it is easy to assemble. It requires a crane, etc., and its workability is extremely poor compared to other types of formwork, and it is limited to a limited range of use.

On the other hand, in residential buildings such as condominiums, on the other hand, the conventional method of finishing the concrete surface with gypsum board is shifting to the method of directly attaching the wallpaper to the concrete surface. Although it maintains the surface smoothness, when it is used several times, concrete bites into the concrete contact surface of the wooden plywood, and the concrete contact surface part of the wooden plywood partly peels off, causing an abnormal surface such as that part protruding. For example, the concrete surface that has been cast is rough, and in order to obtain a good concrete surface, it is necessary to perform troublesome repairs.

On the other hand, in the plastic formwork, unlike the wooden formwork, the surface of the concrete does not become rough due to the peeling off of the surface, but when it is repeatedly used, a thin layer of concrete called slag is formed on the surface and side faces of the formwork. Adheres and accumulates. This layer of Noro tends to cause partial peeling when it is deposited to a thickness of about 1 mm, resulting in irregularities on the surface of the mold. If such a mold is used as it is, the concrete surface that has been cast becomes a pitted surface. , When the wallpaper is pasted directly, the surface of the wallpaper becomes uneven and spoils the aesthetics, so it is necessary to repair the concrete surface in advance.

[0008] Moreover, the slag accumulated on the side surface of the mold is
Since the dimensions of the formwork will be disturbed, when connecting the formwork on the side, the connection between the formwork will not work and the connection will not be possible, or even if it can be connected, the joint part will not stick and the empty part This can cause concrete to leak from there. This causes protrusions to remain on the finished concrete surface, which requires time and effort to remove them, and promotes further adhesion of slag to the side surface of the mold.

However, the slag attached to the plastic formwork has a portion that is firmly fixed to the surface of the formwork when it is attempted to be removed positively. It is not peeled off by the removal with a keren stick, and even if it is hit with a hammer, the hit part is slightly peeled off. For this reason, the removal of slag is a labor-intensive job, and a means for solving this is strongly desired.

As described above, wood that has been widely and widely used as a formwork has to be dealt with due to changes in the market environment, and plastics that have been gradually used have their respective problems, and new construction is required. In responding to the adoption of the construction method, metal molds are generally difficult to widely use, and at present, molds satisfying various conditions are not yet provided.

[0011]

Conventionally, a metathesis-polymerizable cyclic olefin containing a monomer liquid comprising a metathesis-polymerizable cyclic olefin containing a catalyst component of a metathesis polymerization catalyst system (also referred to as a metathesis catalyst system) and an activator component. There is known a method for producing a crosslinked polymer molded product by mixing a monomer liquid consisting of (1) with (4) and injecting it into a mold and polymerizing and crosslinking in the mold (see, for example, Japanese Patent Publication No. 3-28451). .

This reaction injection molding method can use readily available raw material monomers, has low monomer viscosity and low injection molding pressure, has a rapid polymerization / crosslinking reaction, and has a short molding cycle, and has a large molding. Can be obtained relatively easily, and the molded product has excellent advantages such as a good balance between rigidity and impact resistance.

The object of the present invention is to provide a concrete formwork made of a cross-linked polymer obtained by cross-linking and polymerizing a cyclic olefin in a mold using a metathesis catalyst system. Rigidity to withstand, lightness that can be easily carried by workers, ease of nailing and sawing necessary for on-site assembly, durability that can be used repeatedly, pollution-free that does not generate toxic gas during waste incineration, etc. In addition to the excellent performances required of a mold, it is an object of the present invention to provide an excellent method for removing slag attached to the mold in order to effectively utilize the durability of the mold.

[0014]

That is, the present invention is as follows. Monomer liquid A containing metathesis polymerizable cyclic olefin containing catalyst component of metathesis polymerization catalyst system (solution A) and monomer liquid containing metathesis polymerizable cyclic olefin containing activator component of metathesis polymerization catalyst system (solution B) In a concrete form made of a cross-linked polymer obtained by mixing and mixing the raw material mixed solution into a mold, and causing the polymerization and crosslinking reaction in the mold, the form is poured into concrete. 1. A method for regenerating a crosslinked polymer concrete formwork, which comprises treating with high-pressure washing water after use, and 2. In the method for regenerating a crosslinked polymer concrete formwork according to 1 above, 200 kg / cm ² G or more, 1500
A method for reclaiming a crosslinked polymer concrete formwork, characterized in that high-pressure washing water of not more than kg / cm ² G is used.

The present invention will be described in more detail below.

As the metathesis-polymerizable cyclic olefin for forming the cross-linked polymer which constitutes the concrete form of the present invention, those containing 1-2 metathesis-polymerizable cycloalkene groups in the molecule are used. Preferred are compounds having at least one norbornene skeleton in the molecule. Specific examples thereof include dicyclopentadiene, tricyclopentadiene, cyclopentadiene-methylcyclopentadiene co-dimer, 5-ethylidene norbornene, norbornene, norbornadiene, 5-cyclohexenyl norbornene, 1,4,5,8-dimethano. -1,4,4a, 5,6,7,8,8a, -octahydronaphthalene, 1,4-methano-1,4,4a, 5
6,7,8,8a-octahydronaphthalene, 6-ethylidene-1,4,5,8-dimethano-1,4,4a,
5,6,7,8,8a-octahydronaphthalene, 6-
Ethylidene-1,4-methano-1,4,4a, 5,6
7,8,8a-octahydronaphthalene, 1,4,5,
8-Dimethano-1,4,4a, 5,8,8a-hexahydronaphthalene, ethylene bis (5-norbornene) and the like can be mentioned, and a mixture thereof can also be used. Especially dicyclopentadiene or 50
A mixture containing at least mol%, preferably at least 70 mol% is preferably used.

If necessary, a metathesis polymerizable cyclic olefin having a polar group containing a different element such as oxygen or nitrogen can be used as a copolymer monomer. The copolymer monomer to be hung is also preferably one having a norbornene structural unit, and the polar group is an ester group,
Preferred are an ether group, a cyano group, an N-substituted imide group, a halogen group and the like. Specific examples of such a copolymerized monomer include 5-methoxycarbonylnorbornene, 5- (2-
Ethylhexyloxy) carbonyl-5-methylnorbornene, 5-phenyloxymethylnorbornene, 5-cyanonorbornene, 6-cyano-1,4,5,8-dimetano-1,4,4a, 5,6,7,8 , 8a-octahydronaphthalene, N-butylnadic imide, 5-chloronorbornene, and the like.

The monomer liquid A (solution A) in the present invention contains a catalyst component of a metathesis polymerization catalyst system. As such a catalyst component, salts such as halides of metals such as tungsten, rhenium, tantalum and molybdenum are used, and a tungsten compound is particularly preferable. As such a tungsten compound, tungsten hexahalide, tungsten oxyhalide and the like are preferable, and more specifically, tungsten hexachloride, tungsten oxychloride and the like are preferable. Further, an organic ammonium tungstate or the like can be used. It has been found that such a tungsten compound immediately starts cationic polymerization when added directly to a monomer, which is not preferable. Therefore, it is preferable to use the tungsten compound after suspending it in an inert solvent such as benzene, toluene, chlorobenzene or the like in advance and solubilizing by adding a small amount of an alcohol compound and / or a phenol compound. Further, as described above, it is preferable to add about 1 to 5 mol of a Lewis base or a chelating agent to 1 mol of the tungsten compound in order to prevent undesired polymerization. Examples of such additives include acetylacetone, alkyl acetoacetates, tetrahydrofuran, and benzonitrile. When a polar monomer is used, as described above, the polar monomer itself may be a Lewis base, or the compound may have its action without adding any of the above compounds. As described above, the monomer liquid A containing the catalyst component (solution A) has substantially sufficient stability.

On the other hand, the monomer liquid B (solution B) of the present invention contains an activator component of a metathesis polymerization catalyst system. This activator component is represented by the following I-
Organometallic compounds centered on alkylated group III metals, especially tetraalkyltin, alkylaluminum compounds, alkylaluminum halide compounds are preferred,
Specific examples include diethyl aluminum chloride, ethyl aluminum dichloride, trioctyl aluminum, dioctyl aluminum iodide, tetrabutyl tin and the like. By dissolving the organometallic compound as an activator component in a monomer, a monomer solution B
(Solution B) is formed.

Basically, by mixing the solution A and the solution B and injecting them into a mold, a molded article of the desired crosslinked polymer can be obtained. Is initiated very quickly, which can often be a problem, as curing may occur before it has flowed sufficiently into the mold. Therefore, it is preferable to use the activity modifier. As such a regulator, Lewis bases are generally used, and above all, ethers, esters, nitriles and the like are used. Specific examples include ethyl benzoate, butyl ether, diglyme and the like. Such a regulator is generally used by being added to the solution (solution B) of the component of the activator of the organometallic compound. When a monomer having a Lewis base is used as described above, it can also serve as a regulator.

The amount of the metathesis polymerization catalyst system used is, for example, when a tungsten compound is used as a catalyst component, the ratio of the tungsten compound to the raw material monomer is as follows:
It is about 1,000 to 1 to 15,000, preferably about 2,000 to 1 on a molar basis, and when an alkylaluminum is used as the activator component, the aluminum compound to the above raw material monomer is used. The ratio of about 100 to 1 to 10.000 to 1, preferably 2 on a molar basis.
The vicinity of 00: 1 to 1,000: 1 is used. Further, as described above, the chelating agent modifier can be adjusted and used in a timely manner depending on the amount of the catalyst system used by experiments.

The molded product of the crosslinked polymer obtained according to the present invention may further contain various additives depending on the purpose in order to improve or maintain its properties in practical use. Such additives include fillers, pigments,
There are antioxidants, light stabilizers, flame retardants, polymer improvers and the like. Since such an additive cannot be added after the crosslinked polymer of the present invention has been molded, it is necessary to add it to the above-mentioned pigment solution in advance when adding it.

The easiest method is to add it to either or both of the solution A and the solution B in advance. In that case, in this case, the highly reactive catalyst component in the solution and the activity are high. It must be one that does not react with the agent component practically to some extent and does not inhibit polymerization. If the reaction does not substantially prevent the polymerization even if it coexists with the unavoidable reaction, or if it takes some time to inhibit the polymerization, mix it with the monomer to prepare the third liquid, and immediately before the polymerization. It can also be used as a mixture. Further, a method of adding the above additives to solution A or solution B containing no polymerization catalyst or activator as the third liquid is also conceivable. Further, in the case of a solid filler, both components are mixed and immediately before the start of the polymerization reaction or a material having a shape capable of sufficiently filling the voids during the polymerization, is filled in the molding die in advance. It is also possible to put it. Reinforcing agents or fillers as additives are effective in improving flexural modulus. Such materials include glass fiber, mica, carbon black, wollastonite and the like. Those surface-treated with a so-called silane coupler or the like can be suitably used.

It is preferable that an antioxidant is added to the molded article according to the present invention. Therefore, it is desirable that a phenol or amino antioxidant is added to the solution in advance. Specific examples of these antioxidants include 2,6-di-t-butyl-p-cresol, N, N
'-Diphenyl-p-phenylenediamine, tetrakis [methylene (3,5-di-t-butyl-4-hydroxycinnamate)] methane and the like.

Further, the molded product of the present invention can be obtained by adding another polymer in a monomer solution state at the time of molding. As such a polymer additive, the addition of an elastomer is effective in enhancing the impact resistance of the molded product and controlling the viscosity of the solution. Elastomers used for such purpose include styrene-butadiene-styrene triblock rubber, styrene-isoprene-styrene triblock rubber, polybutadiene, polyisoprene,
There may be mentioned a wide range of elastomers such as butyl rubber, ethylene-propylene-diene-terpolymer, nitrile rubber.

As the material of the mold used for molding the concrete formwork of the present invention, casting or thermal spraying of steel, cast or forged aluminum or zinc alloy, etc.
Examples include electroforming of nickel or copper or resin.
Further, the structure of the mold is simple enough because the pressure generated in the mold at the time of molding is several kg / cm ² , which is extremely low compared to other molding methods. It can be made cheaper than the mold.

Since the formwork of the present invention is generally used as it is for concrete pouring, reinforcing ribs and bosses are provided on the back side of the concrete contact surface, and the formwork is connected to each other in the peripheral portion. Side walls are provided. The side wall is provided with a jig hole for connecting the molds to each other.

The molds are generally assembled as two sets of frames by connecting dozens of them on their side surfaces, with the surfaces that are in contact with concrete facing each other, and usually at intervals of about 15 cm. The molds facing each other are fixed with a jig called a separator to maintain a space.
In addition, a reinforcing skeleton called a flap angle is attached to the back surface of the mold facing the outside of the frame. The concrete is poured between facing forms, and after the form is solidified, the forms are removed and concrete wall surfaces are created.

The removed formwork is usually used repeatedly as it is, but since the crosslinked polymer of the present invention is a material in which slag does not easily adhere, the slag is less adhered at the beginning of use, and the finish of the concrete surface and There is little influence on the formwork assembly work. However, as it is repeatedly used many times, slag accumulates, the concrete surface becomes rough, and it takes time and labor to remove the slag before assembling.

As a means for solving this problem, the possibility of removing slag using water as a medium was examined, and it was found that a commercially available high pressure washer had no effect at all.

Therefore, as a result of further studies on the cleaning with high-pressure water, the present inventors have found that when the water pressure of the high-pressure water is about 40 to 100 kg / cm ² G, which has been conventionally used, the concrete is It was clarified that it was completely insufficient for removal. However, if the water pressure was too high, the surface of the mold itself would be damaged along with the removal of the slag, and in the worst case the mold itself would be cut off. ~
The present inventors have found that the use of high-pressure water pressure in the range of 1500 kg / cm ² G enables rapid removal of slag without damaging the mold itself, and has reached the present invention.

In this case, the moving speed of the nozzle for injecting high-pressure water on the mold, that is, the relative moving speed of the nozzle to the surface to be cleaned (cleaning surface) is also important. This moving speed is closely related to the processing time of the mold, and since the length of a general mold is about 2 m, the efficient time for processing is from several tens of seconds to several minutes per sheet. It is a range. At this time, the relative movement of the nozzle with respect to the cleaning surface can be realized by moving the nozzle itself, by moving the cleaning surface, or by a combination of the two. On the other hand, it can be realized by rotating, zigzag moving, etc. on a plane substantially parallel, or vice versa, by performing various movements such as rotating, zigzag moving, etc., the number of nozzles used is one. However, it is possible to use a plurality of nozzles, but in general, the collision area when the injected high-pressure water collides with the cleaning surface has a diameter of several mm at most, and in the normal case, it is around 1 mm, so the nozzle does not move with respect to the cleaning surface. It needs to be efficient.

Among these methods, the direction of water spray from the nozzle is fixed to the cleaning surface, or the nozzle is sprayed on a surface substantially parallel to the cleaning surface while slightly changing the spray direction. The method of giving a circular motion (which means the orbital motion rather than the rotational motion if the nozzle is compared to the earth) is advantageous because it is easy to obtain high speed mechanically.
In this case, the nozzle itself may be rotated. In this case, when the rotation is directly obtained from the motor, it is generally 150.
The rotation diameter is 0 to 1800 rpm, and a rotation diameter of several cm to several tens of cm is suitable as a rotation diameter that can be easily produced in the apparatus. The number of nozzles that make a circular motion may be one or more,
In order to clean the entire surface of the mold, it is preferable to move the mold itself back and forth in addition to the above movement of the nozzle. Further, in order to clean the side surface of the mold, it is necessary to install the same nozzle on the side surface.

The distance between the nozzle and the surface of the mold, that is, the height of the nozzle, is also an important factor that determines the removal efficiency of the slag. This requirement includes the angle at which the nozzle faces the mold, but it is also a factor that depends on the difficulty of the nozzle placement method on the device. In the examples of the present invention, water was sprayed onto the mold from a height of 5 cm in the vertical direction according to a general method.

Although these injection methods and movement methods are important for efficiently carrying out the present invention, they can be easily determined by those skilled in the art through preliminary experiments, etc. It is not limited by the selection of the above method.

Next, the structure of the molded concrete formwork which is the object of the present invention will be described.

FIG. 1 shows an example of the concrete formwork of the present invention, which is integrally molded. A is a plan view, B is a side view in the longitudinal direction, C is a side view in the lateral direction, and D is a cross-sectional view of A in the YY direction. In FIG. 1, the concrete formwork is a rectangular (rectangular) plate-like body 1 as shown in a plan view A , and a frame 3 is formed on one side thereof along its periphery as shown in the figure. In the longitudinal direction, there are one or more ribs 2 (four in FIG. 1) and bosses 6 (five in FIG. 1). The surface opposite to the surface on which the frame 3 and the plurality of ribs 2 are formed (opposite surface in FIG. 1) is a concrete contact surface, and in the case of FIG. 1 is a flat surface (generally not a flat surface). , It may be a curved surface).

In the concrete formwork structure of the present invention, the size of the plane portion, which is generally used in wooden formwork, is 9
00 × 1800 mm, 600 × 1800 mm and the like can be applied as they are, but are not limited to this shape. Further, the thickness of the plate-like body 1 forming the concrete contact surface (c in FIG. 1D) is suitably in the range of 3 to 12 mm.

A frame 3 (side surface) is formed around one side of the concrete formwork, and one or more ribs 2 are formed. The frame 3 provided around this has a thickness (in FIG. 1).
The d) of A is preferably in the range of 5 to 10 mm, the height of the frame 3 (e of D in FIG. 1) is preferably in the range of 50 to 80 mm, and is 60 in the Kanto size which is generally used in wooden formwork.
~ 62mm, Kansai size 70mm, etc. are used as they are.

On the frame 3 (side surface), a hole 4 for passing a connecting and fixing jig such as a clip or a bolt for connecting the molds to each other.
Is provided. Further, the frame 3 may be provided with a small hole 5 for nailing, which is used to hit a wooden frame or the like.

In the following examples, the concrete formwork to which the present invention is applied is the one in which the crosslinked polymer is integrally molded, but it may be a combination of a plurality of molded products. Also, a combination with other members, for example, the surface portion corresponding to the concrete contact surface is molded as a plate-like body with the cross-linked polymer of the present invention, and the member corresponding to the back side reinforcement and the frame is made of wood or the like. It may be attached with screws.

[0042]

The present invention will be described below with reference to examples. It should be noted that the embodiments are for explanation, and the present invention is not limited to these.

Reference Example 1 (Preparation of Solution A) 28 parts by weight of tungsten hexachloride was added to 80 parts by weight of dry toluene under a nitrogen stream, and then t
-Add a solution of 1.3 parts by weight of butanol in 1 part by weight of toluene and stir for 1 hour, then add nonylphenol 1
A solution consisting of 8 parts by weight and 14 parts by weight of toluene was added, and the mixture was stirred for 5 hours under a nitrogen stream. Further, 14 parts by weight of acetylacetone was added. The hydrogen chloride gas produced as a by-product was expelled, and stirring was continued overnight under a nitrogen stream to prepare a polymerization catalyst solution.

Then, purified dicyclopentadiene (purity 9
9.7% by weight, the same shall apply hereinafter) 95 parts by weight and purified ethylidene norbornene (purity 99.5% by weight, the same applies hereinafter) 5 parts by weight of a monomer mixture comprising ethylene-propylene-ethylidene norbornene having an ethylene content of 70 mol%. 3 parts by weight of polymerized rubber, Ethanox 7 as oxidation stabilizer
02 was added to the solution to which 2 parts by weight of No. 02 was added so that the tungsten content was 0.01 M / L to prepare a monomer solution A (solution A) containing a catalyst component.

Reference Example 2 (Preparation of Solution B) Ethylene-containing 70 mol% ethylene-propylene-ethylidene norbornene copolymer rubber based on a monomer mixture consisting of 95 parts by weight of purified dicyclopentadiene and 5 parts by weight of purified ethylidene norbornene. Trioctylaluminum 8 was added to a solution prepared by dissolving 3 parts by weight.
5, dioctylaluminum iodide 15, and diglyme 100 were mixed and prepared at a molar ratio of an activator mixture for polymerization to be added at a ratio of aluminum content of 0.03 M / L, and a monomer liquid B containing an activator component was added. (Solution B) was prepared.

Reference Example 3 (Molding) A forged aluminum mold having a cavity for obtaining a concrete mold made of a cross-linked polymer having the shape shown in FIG. 1 was used for molding.

The dimensions of this mold were as follows (the symbols are as shown in FIG. 1). Regarding the shape of the plate-shaped body Length in the longitudinal direction (a) = 2026 mm Length in the lateral direction (b) = 600 mm Thickness (c) = 4 mm Thickness of the frame 3 around the plate-shaped body (d) = 8 mm High Length (e) = 62 mm About longitudinal ribs (4) Thickness (f) = 12 mm Height (e) = 62 mm

The molding aluminum mold was heated to a cavity mold of 90 ° C. and a core mold of 70 ° C., and after closing the mold, the solution A of Reference Example 1 was mixed in the mold using a RIM molding machine. And solution B of Reference Example 2 were mixed and injected in equal amounts. Five minutes after the liquid injection and filling, the mold was opened, and a cross-linked polymer concrete form was taken out.

[Reference Example 4] (Placement of formwork) Using the concrete formwork obtained above, five 14 mmφ holes (number 4 in FIG. 1) for connection by clips were provided on the side surface part, 5 mmφ for nailing
5 holes (No. 5 in FIG. 1) were provided, and the same wall for nailing was also provided with two holes for nailing on both sides. Two of these molds were used together with the wooden formwork at the construction site of the condominium where the wooden formwork was placed. The concrete form frames made of the cross-linked polymer were connected with clips and nailed to the wooden form frames. When used 20 times, the cross-linked polymer concrete formwork according to the present invention is in a state in which slag is deposited on the surface to a thickness of about 1 mm, and peeling of the slag is starting to begin partially. In the place where the crosslinked polymer concrete formwork according to the present invention was used, the concrete wall surface after the 20th time concrete was placed needed to repair the slight unevenness on the concrete surface due to the partial peeling of Noro. .

During the 20th concrete placing test, the wooden form was replaced with a new one after every use, because the concrete surface became more rough.

[Example 1] A part of the cross-linked polymer concrete form having adhered slag that had been used 20 times was cut out, and the slag was removed by a device modified from Aqua Jet Cutter manufactured by Shimano Machine Co., Ltd. went.

That is, a portion (hereinafter referred to as a test plate) on which the slag is attached to the entire surface was cut into a 5 cm square and the test was conducted under the following conditions. (1) A high-pressure water jet nozzle was fixed at a position 5 cm above the test plate so that the center of the water jet direction was perpendicular to the test plate surface, and water was jetted at a water pressure of 1200 kg / cm ² G. The area where the water collided with the test plate was an area having a diameter of about 1 mm. (2) The test plate is moved at a constant speed of 5.5 m / sec in the front-back direction, and every time the movement in one direction is completed, the test plate is moved by 0.5 mm in the direction perpendicular to the moving direction. Let

As a result, nolo in the portion treated with high-pressure water was completely removed, and no damage due to high-pressure water was recognized on the surface of the crosslinked polymer mold.

[Example 2] As a result of performing a test in the same manner as in Example 1 except that the boundary portion between the part where the slag was removed and the part where the slag was adhered was cut out into a 5 cm square and used, The effect was similar to that of Example 1, and no damage was observed on the surface of the crosslinked polymer mold frame even in the area where no roe was attached.

[Embodiment 3] The moving speed of the test plate is 4 m /
Minutes, as a result of removing slag by the same method as in Example 1 except that the water pressure of the high-pressure water was 300 kg / cm ² G,
The same effect as in Example 1 was obtained.

[Comparative Example 1] The moving speed of the test plate was 5.5.
As a result of treating in the same manner as in Example 1 except that the water pressure of the high-pressure water was set to 1800 kg / cm ² G, the surface of the crosslinked polymer mold frame was roughened like scratches.

Comparative Example 2 The moving speed of the test plate was 4 m /
As a result of performing the treatment in the same manner as in Example 1 except that the water pressure of the high-pressure water was 100 kg / cm ² G, some of the slag was removed but it did not completely fall off and adhered in a thin skin form. There were many parts that were doing.

[0058]

EFFECTS OF THE INVENTION The concrete formwork made of a crosslinked polymer, which is the object of the present invention, can be integrally molded using a material which has never been used, and is easy to handle.
It has a feature that it is lightweight and has excellent durability against repeated use many times, and it is possible to maximize the superiority of the material by the present invention, protecting natural resources, reducing industrial waste, It responds to strong demands from the market, such as dealing with a shortage of skilled workers and uniformity of quality.

[Brief description of the drawings]

FIG. 1 shows an example of a concrete formwork used in the present invention. A is a plan view, B is a side view in the longitudinal direction, C
Is a lateral side view, and D is a lateral sectional view of A in the YY direction.

[Explanation of symbols]

 1 Plate 2 Rib 3 Frame 4 Hole 5 Small Hole 6 Boss

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C08G 61/08 NLH C08G 61/08 NLH (72) Inventor Norio Iguchi 2-1, Uchisaiwaicho, Chiyoda-ku, Tokyo No. 1 in Teijin Meton Co., Ltd.

Claims (2)

[Claims] 1. A monomer liquid A (solution A) containing a metathesis polymerizable cyclic olefin containing a catalyst component of a metathesis polymerization catalyst system and a monomer containing a metathesis polymerizable cyclic olefin containing an activator component of a metathesis polymerization catalyst system. In a concrete mold made of a cross-linked polymer obtained by mixing a liquid (solution B), injecting the raw material mixed liquid into a mold, and causing polymerization and crosslinking reaction in the mold, A method for reclaiming a crosslinked polymer concrete formwork, which comprises treating the frame with high-pressure washing water after using the concrete for casting. 2. The method for regenerating a crosslinked polymer concrete formwork according to claim 1, wherein 200 kg / cm ² G or more and 1500 kg / cm ² G or less of high-pressure washing water is used. How to recycle concrete formwork.