WO1999057200A1

WO1999057200A1 - Synthetic resin composition, and permeable pavement and permeable material using the same

Info

Publication number: WO1999057200A1
Application number: PCT/JP1999/002354
Authority: WO
Inventors: Haruki Kobata
Original assignee: Haruki Kobata
Priority date: 1998-04-30
Filing date: 1999-04-30
Publication date: 1999-11-11
Also published as: JP3145353B2; JPH11310719A

Abstract

Intended to solve the problems arising upon producing a permeable paving body or block from a mixture of an aggregate with a liquid synthetic resin as an adhesive, of the insufficient strength due to spotty adhesion, the clogging of the space between aggregate particles with sand or dust, the togging of an aggregate and the like caused by the precipitation phenomenon during the working life of the liquid synthetic resin, and to take full advantage of the adhesiveness of the liquid synthetic resin. Provided is an adhesive synthetic resin composition obtainable by mixing a liquid synthetic resin, a rock fiber impregnated with the liquid resin, at least one inorganic fiber selected from among a glass fiber, a carbon fiber and an aluminum fiber, and a thickener. A permeable pavement and a permeable material having a high mechanical strength and being free from clogging can be obtained through producing a paving body or a block from a mixture or a kneaded product of the aforemetioned resin composition with an aggregate.

Description

Specification

Title of invention

TECHNICAL FIELD The present invention relates to a synthetic resin composition, and a water-permeable pavement and a water-permeable material using the same.

TECHNICAL FIELD The present invention relates to a synthetic resin composition having an adhesive action. For example, the synthetic resin composition is kneaded with an aggregate and adheres between the aggregates to form a pavement body having water permeability and a drainage function. As an adhesive when manufacturing retaining walls and structures, and as a material for enclosing harmful substances such as polychlorinated biphenyl (hereinafter referred to as PCB), and for preventing water leakage It can be used as a paint.

Background art

There are various types of synthetic resins, such as those that are liquid in themselves, those that are used as a liquid by adding a solvent, and those that are used in the form of a powder. Each of them has its own curing action. At present, the physical properties and adhesive strength of these synthetic resins are used in many fields and are indispensable.In spite of technological improvements in cement and asphalt, synthetic resins are often used in place of them. It has become. For example, in conventional asphalt pavement, the pavement does not have water permeability, so it is easy for puddles to form, the ground becomes dry and bacteria necessary for plants are killed, and there is no water supply. There was a problem that the cultivation was poor, and the amount of rainwater discharged from the gutter overflowed the road exceeding the drainage capacity.Therefore, a permeable pavement method was proposed in which rainwater was directly penetrated into the ground through the pavement. Was. As this permeable pavement, not only asphalt pavement, but also permeable pavement using liquid synthetic resin as an adhesive, kneading with aggregate, and bonding between aggregates with synthetic resin has been developed. Water permeable land blocks using resin as an adhesive are also manufactured. However, conventionally, the usable time period of the liquid synthetic resin, that is, the process in which the synthetic resin is cured by a chemical reaction, that is, the chemical reaction between the synthetic resin and the curing agent, or synthesis by heat, light, etc. Due to the sedimentation of the synthetic resin during the time period immediately before the reaction of the resin starts and the synthetic resin itself begins to solidify to the extreme, the uneven mixing of stone powder and fine sand used as aggregate, etc. Could only produce pavements, bricks and blocks in unstable condition. When using a synthetic resin, it is important not to move it after curing has started, and if the synthetic resin is moved while curing is in progress, the original adhesive strength of the synthetic resin cannot be obtained. However, in the past, for example, kneading a synthetic resin and an aggregate during resin paving, etc., has little toughness, so even a plasterer's iron can't be sufficiently compressed to form, even if it is compacted. Until the whole kneaded material became viscous, it was necessary to apply excessive pressure during the curing process of the synthetic resin, forcing it to perform excessive work. For this reason, the synthetic resin in the course of curing is moved by the pressure, and the adhesive strength inherent in the synthetic resin cannot be obtained, and the strength after the construction is insufficient. As a result, peeling of the aggregate, so-called topping, occurs. There was a drawback that the pavement and blocks did not last long.

Aggregate stability is the condition in which aggregates of various sizes, such as pavements, do not move because they are stuck together. This stability of aggregates depends on the strength and durability of the pavement, bricks, blocks, etc. The strength of the adhesive is not the only condition. Aggregate mix in ordinary asphalt pavement mixes not only large and small crushed stones but also large sand (coarse sand), fine sand and stone powder. That is to say, this is called “coarse grain composition of roadway ゃ dense grain composition”. On the other hand, for example, coarse asphalt pavement on the sidewalk has a diameter of 4 mn! It is an open-grained mixture mainly composed of crushed stones of up to about 8 mm, and is constructed excluding coarse sand, fine sand, and stone powder. When asphalt or conventional liquid synthetic resin is used to make permeable pavements, bricks, blocks, etc., it is inevitable that only the voids between the aggregates will have a permeable function. However, the result was that dense granules could not be mixed to leave voids, In addition to the fact that the bond between them is pointy and the strength cannot be improved, the voids between the aggregates are clogged with earth and sand and dust, and the water permeability decreases. The permeable pavement necessary to improve the desertification of the earth and reduce the heat reflection including domestic waste heat, as described above, if only liquid synthetic resin is used as the adhesive, as described above, Due to the point-to-point bonding between the materials, not only is the bonding strength insufficient, but also because the voids between the aggregates are large, earth and sand and dust particles are liable to be clogged there. It was not possible to eliminate the so-called tobbing, in which the aggregate on the lock surface came off. Furthermore, when constructing a sabo dam or retaining wall with a drainage function, simply bonding the aggregate with liquid synthetic resin will cause clogging for the same reason as described above. Not only the soil but also the water stops, and the danger of landslides cannot be wiped out. However, simply increasing the viscosity of the liquid synthetic resin with a thickener does not improve the above-described point-adhesion phenomenon between aggregates in a water-permeable pavement or a water-permeable material.

Further, in the conventional method of using a liquid synthetic resin, not only the water-permeable material as described above, but also the strength of the water-impermeable material can be obtained only by the adhesive force of the synthetic resin itself. In addition, the strength of fiber-reinforced plastics (hereinafter referred to as FRP) depends greatly on the strength of inorganic fibers such as glass fiber and carbon fiber as reinforcing materials, and the synthetic resin itself to which these reinforcing materials are attached is also used. Is merely supporting the reinforcement.

In Japan, a liquid synthetic resin made by adding a solvent to a synthetic resin is used as an adhesive, and this is mixed with aggregate to form a pavement or a flat block, etc. for the purpose of improvement, and _t nationwide its use is expanding, also its history, is beyond the early or 2 0 years. However, in the meantime, we have reached today without any trace of technical progress. That is, the above-mentioned sinking phenomenon during curing, which is peculiar to the liquid synthetic resin described above, non-uniformity of the resulting adhesion, peeling of the aggregate (topping), rolling by a roller, or sufficient compression by a press or the like cannot be performed. Aggregate instability, and secondary cement products Critical defects such as mass production cannot be improved. In addition, no improvement has been made in FRP, such as improving its strength more than before, and making the manufacturing method as it is now, or making it easier to mold than the current manufacturing method. As described above, in the prior art, a permeable pavement, a brick, a block, a retaining wall or other structure having a drainage function, or a FRP is simply used as an adhesive in a state where the liquid synthetic resin is used as it is. Because it was manufactured, the required strength could not always be satisfied, and for the purpose of water permeability, the problem of clogging was not solved, and the required water permeability function was not always satisfied It is hard to say that it is prepared for.

Also, in the use of synthetic resins to easily contain various harmful substances such as PCBs, sufficient improvements have been made to improve the effect by applying the inherent adhesive strength of synthetic resins to thick films. Absent.

Furthermore, even in the use as a paint in the water leakage prevention treatment, a sufficient effect cannot be obtained by a single application operation only by chemically thickening the liquid synthetic resin. An object of the present invention is to produce a water-permeable pavement, a brick, a block, or the like by mixing a liquid synthetic resin with an aggregate as an adhesive as described above, a retaining wall having a drainage function, and other structures. When constructing an object, there is the problem of insufficient strength due to the point-adhesion phenomenon due to the sinking phenomenon of the liquid synthetic resin during the usable time zone, the problem of clogging of soil and dust in the voids between aggregates, and It aims to solve the problem of aggregate tobbing. Further, a further object of the present invention is to make the most of the adhesive force of the synthetic resin in the above case, and to be able to use fine particles such as stone powder and fine sand as aggregate. Further, another object of the present invention is to make it possible to securely contain various harmful substances by using a synthetic resin, and to make it possible to produce an FRP having higher strength than before. Disclosure of the invention

The synthetic resin composition of the present invention comprises: a liquid synthetic resin; and absorbing the liquid synthetic resin. And a thickening agent and at least one inorganic fiber selected from the group consisting of glass fiber, carbon fiber, and aluminum fiber, and has an adhesive action. In the above case, it is preferred that the rock wool absorb the liquid synthetic resin to a saturated state. The mixing ratio of the inorganic fiber to the liquid synthetic resin is preferably in the range of 1 to 30% by weight, and the mixing ratio of the thickener to the liquid synthetic resin is preferably in the range of 1 to 15% by weight. If necessary, a curing agent for the liquid synthetic resin to be used may be added to the synthetic resin composition.

Preferred examples of the liquid synthetic resin include a vinyl ester resin, an unsaturated polyester resin, an epoxy resin, a urethane resin, and a thermosetting acrylic resin.

It is preferable to use a glass fiber coated with a synthetic resin that is not dissolved in a solvent of the liquid synthetic resin absorbed in the mouth wool.

Examples of the thickener include isocyanates such as diphenylmethane diisocyanate, powdered cellulose, and calcium carbonate. In the synthetic resin composition of the present invention, characteristics such as adhesiveness and chemical resistance of the synthetic resin, and characteristics and strength of inorganic fibers such as glass fiber, carbon fiber, or aluminum fiber are more effectively exhibited. Therefore, after absorbing the liquid synthetic resin into rock wool, which is excellent in absorbing power and hard to be dusted, an inorganic fiber such as glass fiber, carbon fiber or aluminum fiber is mixed with the liquid synthetic resin to further stabilize the state. It is preferable to increase the viscosity by adding a thickener in an amount necessary for adjusting the viscosity to the viscosity required for construction or work, in portions, every 5 to 10 minutes.

When the liquid synthetic resin is absorbed by the rock wool, if the liquid synthetic resin is a two-part liquid composed of a main agent and a curing agent, the main agent and the curing agent are mixed and absorbed by the rock wool, or Various methods can be used, such as absorbing the main agent and the curing agent respectively into rock wool and mixing the curing agent after absorbing the main agent into rock wool.

Furthermore, the synthetic resin composition of the present invention may contain a curing accelerator. Aggregates are mixed with the synthetic resin composition of the present invention, laid, and rolled to form a water-permeable pavement.

Further, if the synthetic resin composition is mixed with an aggregate, kneaded, and compression-molded, a water-permeable material can be produced.

Further, a molded article can be molded using the synthetic resin composition as described above, and a harmful substance can be enclosed in the molded article.

As described above, the synthetic resin composition of the present invention is used as a binder for kneading with an aggregate to produce a permeable pavement, a block such as grating, interlocking, brick, and a flat plate block. Alternatively, it can be used to build revetments, sabo dams, pools, retaining walls, and other civil engineering structures. The term “grating” originally means a cover of a gutter, but it is also used as a generic term for a protective body applied to the root of a street tree or the like. This dripping is required to have a performance that does not cause clogging, allows only water and air to permeate, and does not allow sediment and dirt to permeate. Further, the term "interlocking" means a pavement in which various blocks such as bricks are mainly assembled on a sidewalk or the like, and the blocks themselves were conventionally impermeable materials. The synthetic resin composition of the present invention is used for imparting water permeability to joint portions formed between the water-impermeable blocks, or for producing a water-permeable block itself. Further, the synthetic resin composition of the present invention can be used for solidifying soil contaminated with harmful substances, containing harmful substances such as PCB, and the like.

In the present invention, the physical technique, that is, the action of the inorganic fiber is used in addition to the advantage of the chemical properties of the liquid synthetic resin, thereby improving the above-mentioned improvement to compensate for many defects in the conventional technology. Got none. For example, in the use as an adhesive in the production of a water-permeable material, in the bonding between the aggregates, the synthetic resin stagnates where the aggregates overlap. If a force greater than the adhesive strength of the resin solidified part is applied, it is natural that the resin part is destroyed and the aggregate is peeled off. And, as before, only liquid synthetic resin Then, even if it is thickened with a thickener, after all, the problem of spot adhesion cannot be solved. On the other hand, as in the present invention, the strength of the cured product is further improved by absorbing the liquid synthetic resin into rock wool to form a fiber, and further increasing the viscosity thereof. In this case, however, the fibrous synthetic resin also exists in the gaps between the aggregates, and the gaps are further miniaturized, so that the gaps between the aggregates cannot be clogged with earth and sand or dust. The structure allows only water and air to pass through. Adhesion of the aggregate by the synthetic resin composition according to the present invention and its retention force are based on this principle.

Conventionally, even it shall apply in permeability of the structure (as permeability of about 1 0- ² c mZ s), in order to ensure a void for passing water in the structure, the aggregate is mixed with liquid synthetic resin Fine particles such as fine sand and stone powder must be removed from the inside. Coarse grains containing coarse sand, fine sand, stone powder, etc. No coefficients were obtained. That is, in the case of liquid synthetic resin, fine particles such as fine sand and stone powder mixed into asphalt are difficult to mix uniformly. The void structure had to be given priority.

The synthetic resin composition according to the present invention can be obtained by pursuing what kind of action the asphalt, cement, liquid synthetic resin, and the like, which are adhesives, have when bonding the aggregate to the aggregate. It is a thing. Conventionally, a water-permeable structure using a synthetic resin has a structure in which a liquid synthetic resin that stagnates at a contact portion between the aggregates and adheres by a point action, and the water permeability is inevitably associated with the aggregate. They depended on the voids formed between the aggregates. However, since there are many parts with large voids, it is easy for soil and dust to clog. In fact, the evidence is that the drainage holes required for retaining wall blocks actually clog after six months and have no longer served any purpose. Also, in the past, there was great expectation for the water permeability of flat plate blocks produced by kneading liquid synthetic resin as an adhesive with aggregate, but in reality it is well known that clogging is still a problem. It is.

In addition, water permeability is greatly expected for asphalt pavement. Coarse asphalt pavement was constructed on sidewalks nationwide. However, in reality, it has clogged twice after summer and has not met expectations. The cause of the clogging on the asphalt pavement is basically different from the clogging of the permeable material using the liquid synthetic resin described above. That is, in the case of a thermosetting synthetic resin, there is no thermal melting when it is hardened. Therefore, the only cause of clogging of the water-permeable material using the thermosetting synthetic resin is the earth and sand entering the gap between the aggregates described above. , Dust is to be clogged. On the other hand, clogging of the permeable material by asphalt is inevitably caused by removing coarse sand and stone powder from the mixture of aggregates and using only coarse crushed stones. In addition, since asphalt itself is thermally melted, asphalt always melts in the summer and earth and sand and dust clogging the pores may clog the pores. In addition, clogging of a water-permeable material using cement is due to the fact that the cement undergoes a chemical reaction with moisture and foams and solidifies, resulting in an extremely complicated shape of the void, which is filled with earth and sand and dust.

Originally, in terms of adhesive strength, synthetic resin, which is remarkably strong compared to asphalt and cement, does not necessarily mean that it is not possible to maintain strength and secure voids between aggregates. The problem was how to make it ultra-fine so that it was not clogged with earth, sand and dust. Therefore, in the present invention, the voids between the aggregates are made ultra-fine by fibrillating the liquid synthetic resin using inorganic rock wool, and the strength thereof is, for example, withstand pressure. in, be of the liquid synthetic resin alone is 3 5 0 kgcm ^2, becomes 6 9 0 kg Z cm ² by fiberizing, further, inorganic fibers such as glass fiber added to the fibers of synthetic resin The withstand pressure of the synthetic resin composition of the present invention was increased to 1311 kg / cm ² .

In addition, when the synthetic resin composition of the present invention is conventionally kneaded with an aggregate such as crushed stone using a liquid synthetic resin as an adhesive, the gap is filled, and uniform kneading is difficult. Fine sand that could not be used as an aggregate of liquid synthetic resin In addition to fine aggregates such as ash and stone powder, lightweight aggregates such as waste plastics and ceramics, as well as fine aggregates such as incineration ash and sludge, can be used to manufacture products that go beyond conventional methods. Became possible. In addition, because of its high strength and improved toxic substance encapsulation, it can play a major role in the most important and indispensable issue of industrial waste disposal of modern society in the containment of toxic substances. .

Originally, the reason why synthetic resin with excellent adhesive strength, acid resistance, salt resistance, and alkali resistance could not be replaced with asphalt or cement, was conventionally based only on chemistry. This is because they tried to reform synthetic resins. On the other hand, in the present invention, the above-mentioned object was achieved by superposing the physical conditions of inorganic fiber formation on the excellent physical properties of the synthetic resin. That is, the present inventor did not think that even if organic conditions were added to the organic synthetic resin, the above object could be achieved after all. This is nothing but the fact that the organic synthetic resin acts on an organic substance other than the curing agent to hinder use as long as the target substrate of the present invention is a liquid synthetic resin. Thus, by applying a liquid synthetic resin as an adhesive acting on the aggregate in a fibrous manner to the aggregate, the defect caused by the conventional point-to-point adhesion between the aggregates could be improved.

In addition, in the present invention in which the liquid synthetic resin is used as fibers, even if fine aggregates such as fine sand and stone powder are used as the aggregate, as with the asphalt, not only the rolling operation by the roller 1 but also the press or vibration, Furthermore, since it can be formed by hydraulic pressure, perfect strength can be obtained, and fibrous synthetic resin exists in the voids between the aggregates to form ultrafine voids. Therefore, the present invention completely breaks the conventional wisdom that a permeable structure must be a mixture of open-grained aggregates excluding fine sand, stone powder and the like. Construction of a water-permeable and drainage structure using the synthetic resin composition of the present invention can achieve a water-permeability coefficient of 10 to ² cm, s with a conventional mixture of dense and coarse aggregates. In the permeable pavement of the present invention, not only the reflection of solar heat acting on the pavement surface can be extremely suppressed, but also the sound of the running tires of automobiles can be controlled by the use of dense particles. It has the effect of lowering by about 5 dB compared to the conventional paved road. In addition, asphalt alone cannot maintain the strength, and in recent years construction has been promoted by mixing some liquid synthetic resin into asphalt. However, in this case, clogging due to hot melting of the asphalt is inevitable, although a slight wear reduction effect is recognized. The gaps between the aggregates formed for the purpose of permeation do not make any sense if they are clogged. Also, when a pavement is formed by mixing liquid synthetic resin with crushed stones as an adhesive, the flexural strength of a 40 mm thick structure is limited as long as it is a water permeable structure. , 4 3~ 4 5 kg / cm 2 about the pressure resistance only. Even if the synthetic resin used is the strongest epoxy resin, that is the case. On the other hand, when the same epoxy-based liquid synthetic resin is fiberized as in the present invention and kneaded with aggregate such as crushed stone to obtain a water-permeable structural material, the withstand pressure is 100 kg Z cm. Amazing strength of ² can be achieved.

As in the present invention, many industries have been demanding improvements over 20 years ago that use liquid synthetic resin to perform construction similar to asphalt and to enable mass production similar to secondary cement products. They have been conducting research for more than 10 years in the cement and asphalt industries as well as in the major resin manufacturers. However, none of them have been completed using chemical methods.

Regarding the FRP, there was no FRP that could not be destroyed by hammering the hull or a part of the car body, for example. On the other hand, the FRP using the synthetic resin composition of the present invention is not destroyed even with a hammer. That is, as described above, the synthetic resin composition of the present invention is not only kneaded with the aggregate to form a water-permeable material or a water-permeable pavement, but also becomes a raw material for forming an FRP product. By the way, in the conventional FRP manufacturing method, a liquid synthetic resin is applied to glass fibers woven into a cloth, a glass fiber is stuck thereon, and then a synthetic resin is applied, and a glass fiber is stuck from above. Repeat the work It is manufactured by laminating, but it has been said that the limit of such conventional FRP is to produce a withstand pressure of 2500 kg per 1 cm ² . This against, when the synthetic resin composition of the present invention is used for FRP manufacturing is estimated to be able to achieve 5 0 0 0~ 1 0 0 0 0 kg pressure resistance of Z cm ² . It is also presumed that a pressure resistance of 500 kg / cm ² can be achieved by simply molding this synthetic resin composition.

Hereinafter, each component of the synthetic resin composition of the present invention will be described. First, the liquid synthetic resin in the present invention also includes a liquid synthetic resin obtained by adding a solvent to a synthetic resin and mixing the resultant. The synthetic resin used in the present invention is mainly a thermosetting resin. However, depending on the application, a liquid may be used by adding a solvent to the thermoplastic resin. Thermosetting synthetic resins include vinyl ester type, unsaturated polyester type, epoxy type, urethane type and thermosetting acrylic type. These are all cured by reacting with a curing agent. Normally, when a synthetic resin base material and a curing agent are mixed and used as an adhesive, or when aggregates and the like are mixed and used, this is called a two-part synthetic resin. Unlike the two-part type, the one-part type cures by causing a chemical reaction when exposed to heat, pressure, light, or air. In the present invention, either a two-part or one-part synthetic resin can be used. If the liquid synthetic resin is mixed with the aggregate and then transported to the construction site, or if the construction takes time, two-part synthetic resin is better than one-part due to the curing time. Although convenient, the one-pack type is more convenient when using up the opened synthetic resin under certain conditions, such as the manufacture of various blocks or the manufacture of FRP molded products. If the viscosity of the synthetic resin composition is required to be 200,000 centipoise (hereinafter abbreviated as cps) or more, it is necessary to use a liquid synthetic resin as the main agent, such as epoxy or urethane. On the other hand, for those requiring a large amount of the same amount, or about one-third or one-third of the hardener, not only the main resin but also the hardener is absorbed by rock wool in the same way as the liquid synthetic resin Let it be fine Use it in a state of thickening and thickening. On the other hand, when the amount of the curing agent used is as small as about 1 to 3% by weight, such as a synthetic resin such as a vinyl ester or a polyester resin, the curing agent is absorbed into rock wall as described above. The hardening agent may be added and mixed as it is to the synthetic resin base material that has been absorbed into rock wool and fiberized without the need for fiberization and thickening.

In general, when using a liquid synthetic resin, it is usual to use the synthetic resin after it is mixed well with a curing agent, but in the case of the synthetic resin composition of the present invention, the synthetic resin composition is fiberized. After mixing and kneading the synthetic resin material and the aggregate, a sufficient curing can be achieved even if a curing agent is injected. The reason for this is that by suppressing the sensitive side of the synthetic resin, which is sensitive in character, at the stage of fiberization, the hardener is sufficient for the synthetic resin that is scattered while being kneaded into the aggregate. This is due to the fact that a chemical reaction becomes possible.

As described above, various kinds of liquid synthetic resins can be used as the liquid synthetic resin used in the present invention, and depending on the various characteristics of each synthetic resin and the intended use, the settlement due to the liquid state is possible. The disadvantages of the conventional liquid synthetic resin such as the phenomenon and the fact that it can only act on a thin film can be improved. Conventionally, since liquefied synthetic resin has been liquefied, it is impossible to apply the original adhesive strength of the synthetic resin to a thick film in a single operation, and it is impossible to use asphalt at all. Was. For this reason, synthetic resins have been pointed out as having disadvantages in action and workability, while having the performance as a basic material comparable to cement and asphalt. Synthetic resins with excellent chemical resistance and adhesive strength over a wide area, such as salt resistance, acid resistance, and alkali resistance, have been continuously investigated on many aspects to improve their action and workability. However, from the perspective of plastics, which were originally conceived to be used only in liquid or powder form, it was not possible from this point of view to make reforms that could be used like cement and asphalt through chemical reforms. Is natural. On the other hand, in the present invention, the liquid synthetic resin is simply absorbed into rock wool to increase the viscosity, and the liquid which was originally liquid becomes fibrous, which has not been considered conventionally. Adhesive strength and strength were obtained.

Next, the rock wool used in the present invention will be described. Rock wool is being manufactured by steel companies as an alternative to asbestos, which has already been discontinued in Japan. In the case of asbestos, production was discontinued because asbestos was fiberized from slag obtained by removing iron from iron ore, which was extremely hard and easily dustable, and could cause lung cancer. As an alternative to asbestos, rock slag, which is made from a mixture of medium-hardness rock and soft rock and melted at a high temperature, is fiberized into slag after removing iron from iron ore. Therefore, rock wool is soft, is less prone to dusting than asbestos, and has excellent absorbency against liquid synthetic resins. In addition, the research results of Saitama University that rock wool does not cause lung cancer have been published in newspapers.

The amount of the liquid synthetic resin absorbed by the mouth wool will be described. If rock roll is water, it absorbs about 950% by weight based on its own weight. In the case of liquid synthetic resin, the viscosity is higher than that of water, and when rock wool absorbs the liquid synthetic resin to a saturated state, the liquid synthetic resin that is approximately seven times the weight of rock wool is absorbed. In the present invention, the liquid synthetic resin is absorbed into the rock wool to form a fibrous synthetic resin having adhesiveness. The larger the amount of the liquid synthetic resin absorbed by the rock wool, the more preferable, and the saturated amount On the other hand, it is preferable to absorb 80% or more, more preferably 95% or more, and particularly to a saturated state.

Further, in the present invention, as described above, rock wool absorbs a liquid synthetic resin to form a fiber, and then further forms a resin-coated glass fiber, a carbon fiber reinforced by carbonizing an organic fiber, or a fiber made of aluminum. An inorganic fiber having a reinforcing effect, such as a converted aluminum fiber, is entangled with rock wool that has absorbed the liquid synthetic resin, so that resin-coated glass fibers or carbon that cannot normally absorb the liquid synthetic resin The fibers or aluminum fibers act as if they have absorbed the liquid synthetic resin, and can reinforce the cured product. In other words, excellent absorption When the raw synthetic wool is allowed to absorb a liquid synthetic resin of about 100 cps at 2 Ot :, preferably to a saturated state, the rock wool that fully absorbs the liquid synthetic resin originally has a micro size. Rock wool fibers are easily dispersed. At this stage, the liquid synthetic resin is absorbed by rock wool and becomes fibrous. In the present invention, by mixing inorganic fibers such as glass fiber, carbon fiber, and aluminum fiber with the rock wool that has absorbed the liquid synthetic resin, the liquid synthetic resin is sufficiently absorbed in these inorganic fibers. The rock wool is kneaded so as to be entangled. Thereby, the withstand pressure of the synthetic resin, which is improved by being absorbed by rock wool, is further improved by reinforcing with the inorganic fibers.

The glass fiber used in the present invention is a fiber obtained by melting silica stone, which is a raw material of glass, at a high temperature, and has a physical property of a hardness as high as about 7 (Mohs hardness). It is not something that cannot be said to be dusted. However, glass fibers are widely used as a variety of reinforcing materials, and most of them are produced by coating glass fibers with a synthetic resin and weaving them into a cloth. And its strength is staggering, with the micro-sized fibers being strong enough to lift a few kilograms of goods. By the way, in the present invention, the glass fiber coated with the synthetic resin as described above is mixed with the fiberized fiber obtained by further absorbing the synthetic resin into rock wool. If the resin is of a type that can be dissolved by the solvent of the liquid synthetic resin absorbed in the rock wool, the effect of reinforcing the fiber by coating the synthetic resin may be spoiled. Therefore, it is preferable to use, as the glass fiber used in the present invention, a glass fiber covered with a synthetic resin that is not dissolved in the solvent of the liquid synthetic resin absorbed in the rock wool. It is preferable to use a resin coated with a synthetic resin of a type different from the main component of the liquid synthetic resin. For example, as a synthetic resin for coating glass fiber, polyester resin is generally used because of its low cost. As the liquid synthetic resin to be absorbed by wool, it is preferable to use an epoxy resin, a vinyl ester resin or the like other than the polyester resin.

The carbon fiber used in the present invention is a fiber obtained by heat-treating an organic fiber in an inert gas at a suitable temperature, and carbonizing and crystallizing the organic fiber. This carbon fiber also has an excellent reinforcing effect, far exceeding the degree of reinforcement of the glass fiber. Further, the aluminum fiber used in the present invention is a fiber made of aluminum. This aluminum fiber, unlike glass fiber or carbon fiber, exhibits a reinforcing effect having the characteristics of aluminum, which is a metal.

The length of the inorganic fibers as the reinforcing fibers is preferably 5 to 50 mm, more preferably 10 to 40 mm, and particularly preferably about 20 to 40 mm. If the fiber length is less than 5 mm, the reinforcing effect is not sufficient, and if it exceeds 50 mm, the reinforcing effect is obtained, but the effect is uneven, and the workability such as pavement and forming is also improved. become worse.

The amount of the inorganic fibers used is in the range of 1 to 30% by weight, more preferably 3 to 10% by weight, and particularly preferably 5 to 8% by weight, based on the solid content of the liquid synthetic resin. If the inorganic fiber content is less than 1% by weight, a sufficient reinforcing effect cannot be obtained, and the strength of a water-permeable pavement or a water-permeable material using this synthetic resin composition may not be sufficient. If the amount exceeds the above range, the composition will be loose and the adhesiveness will decrease, and the strength of the permeable pavement and permeable material will be reduced.

Even if the above liquid synthetic resin, rock wool and inorganic fibers are merely mixed, the uniformity of physical properties cannot be obtained, and the effect aimed at by the present invention is reduced by half. Therefore, in the present invention, the liquid synthetic resin is preferably thickened with a thickener so as to stabilize the physical properties of the mixture of the rock fiber and the inorganic fiber that have been preferably absorbed to a saturated state and exhibit a sufficient effect. In this thickening operation, the necessary amount of the thickener is added to the synthetic resin composition in a plurality of portions instead of mixing the thickener in an amount necessary to adjust the viscosity to a desired viscosity at a time. Is preferred. In other words, by adding the thickener in multiple parts, the surface of the liquid synthetic resin absorbed in the mouth wool can be absorbed. The thickener acts from the part to suppress the increase in the viscosity of a part of the liquid synthetic resin located at the center of each fiber of rock wool. This is because, when the thickener is applied uniformly to the liquid synthetic resin even to the inside, even if it is only about 300 cps, the temperature during construction or work can be as low as about 1 Then, as with the conventional liquid synthetic resin, mixing with the aggregate cannot be sufficiently performed. Therefore, it is necessary to leave low-viscosity liquid synthetic resin in order to enable work and construction even at low temperatures. In other words, the use of the thickener is for stabilizing the fibrous state of the liquid synthetic resin, and thus, even if the apparent viscosity is as high as 200,000 cps, the viscosity of the liquid is increased. It can be used at low temperatures without the need.

The thickener used in the present invention is generally used to adjust a synthetic resin to an appropriate viscosity depending on the application, and isocyanates and resin powders used in urethane-based resins. Cellulose, calcium carbonate and the like are used. Among these thickeners, the above-mentioned isocyanates have a high thickening effect, and the desired viscosity can be obtained with a smaller amount of use than other thickeners. It is more preferable because it can exhibit a thickening effect.

The viscosity of the resin composition is adjusted to preferably from 10,000 to 200,000 cps, more preferably from 20,000 to 100,000 cps, particularly preferably from 50,000 to 100,000 cps, with the thickener. The amount of the thickener used depends on the type thereof, but is preferably 1 to 15% by weight, more preferably 1 to 5% by weight, particularly preferably 3 to 4% by weight, based on the solid content of the liquid synthetic resin. Range. If the viscosity of the resin composition is less than 10,000 cps, or if the amount of the thickener used is less than 1% by weight, the desired thickening effect cannot be obtained, and settling when kneaded with the aggregate can be prevented. If the viscosity of the resin composition exceeds 200,000 cps or the amount of the thickener exceeds 15% by weight, kneading becomes difficult. One example of a specific method of using the synthetic resin composition of the present invention is as follows. First, a vinyl ester resin is preferably added to rock wool until it is saturated. Absorb liquid synthetic resin such as saturated polyester resin, epoxy resin, urethane resin, thermosetting acrylic resin, etc., mix lightly to loosen it, and then mix with glass fiber (preferably glass coated with synthetic resin). Fibers) and inorganic fibers such as carbon fibers or aluminum fibers as reinforcing fibers are added at a ratio of 1% by weight to 30% by weight based on the amount of the liquid synthetic resin, and mixed well. By this operation, the rock wool that has absorbed the liquid synthetic resin is entangled with the inorganic fibers such as glass fibers, and the liquid synthetic resin and the inorganic fibers are further integrated. However, the situation is still unstable. That is, in order to absorb the liquid synthetic resin into the rock wool and further reinforce it, if the rock wool is entangled with the inorganic fiber such as glass fiber, let alone the kneading of the aggregate, the hardening agent is mixed. In some cases, the impact may be disjointed and the original effect may not be obtained. Therefore, the thickener of 1% to 15% by weight based on the amount of the liquid synthetic resin is divided into 2 to 5 parts, and after the first addition of the thickener, the mixture is mixed gently. It is preferable that the second and third additions of the thickener are carried out at intervals of minutes to 10 minutes to gradually increase the viscosity. When adjusting the viscosity to 50,000 cps or more, the thickener is required for the fourth and fifth times because the required amount of thickener is large, but the interval is also 5 minutes as before. Preferably every 10 minutes.

Conventionally, when using a liquid synthetic resin, even at a temperature of 15 degrees, a synthetic resin having a viscosity of about 300 cps cannot be uniformly kneaded with the aggregate. So far, synthetic resin manufacturers have responded by adjusting the viscosity to about 2000 cps for summer and about 1500 cps for winter for summer and winter. On the other hand, in the present invention, in order to stabilize the composition of the material kneaded with the aggregate and to enable kneading with the aggregate even at a low temperature, a thickener is used, and the viscosity of the synthetic resin composition is reduced. Adjust to an ultra-high altitude of tens of thousands to tens of thousands cps. In the above case, the reason why the mixing is performed slowly is that, of the liquid synthetic resin absorbed by the rock wool, the liquid synthetic resin on the surface of the rock wool is made to act as a thickener while Of thickener for liquid synthetic resin in the center This is to reduce the effect as much as possible. As described above, rock wool made of liquid synthetic resin absorbed has an extremely high viscosity of about tens of thousands to several tens of thousands of cps, but can be kneaded with aggregate even at low temperatures in winter. The easy reason is that the initial viscosity of the liquid synthetic resin to be absorbed by rock wool is based on about 1300 cps at 20.In addition, when thickening is adjusted, uniform thickening is not performed on the whole. Part of the liquid synthetic resin absorbed in rock wool is to leave the initial low viscosity state. In other words, since the liquid synthetic resin is absorbed into the rock woolen and fiberized, it becomes easier to mix with the aggregate, and the part of the synthetic resin left with low viscosity acts during kneading with the mixer. It can be understood. In the case where the liquid synthetic resin is a two-part liquid composed of a main agent and a curing agent, the main agent is absorbed into rock wool to form a fiber, and this is mixed with inorganic fibers to stabilize the structure. It is preferable to add an aggregate as needed, then add a hardening agent and knead the mixture.

By the above-mentioned viscosity increase adjustment, inorganic fibers such as glass fibers and rock wool that has absorbed liquid synthetic resin are further integrated, and the obtained synthetic resin composition can be stabilized. The characteristic of the synthetic resin composition of the present invention obtained in this way is that even with an extremely high viscosity of about 200,000 cps, it can be uniformly mixed with aggregate containing stone powder and fine sand as in ordinary asphalt. It can be kneaded to form a dense granule mixture. In addition, it can prevent the liquid synthetic resin from sinking during the usable time, such as when using the conventional liquid synthetic resin as it is as an adhesive. The point is that heating is not required at all during work and construction. Moreover, the same compaction work as for asphalt can be obtained in about 1/6 of the compaction work that makes the aggregate stable completely. That is, the kneaded product of the synthetic resin composition of the present invention and the aggregate can obtain 6 to 7 times the stability as compared with the kneaded product of the asphalt and the aggregate. Therefore, under the same conditions, the aggregate stability is much higher than the aggregate stability after asphalt compaction. Tightening While the number of times of compaction is 5 to 6 reciprocations, in the case of the synthetic resin composition of the present invention, the same aggregate stability can be obtained in one reciprocation. Further, a further feature of the present invention is that the synthetic resin composition of the present invention, whether a pavement or a block obtained by kneading the synthetic resin composition with an aggregate as an adhesive or a block, is free from cracks broken in a bending strength test. As you can see, the aggregate is broken and broken. That is, the strength of the synthetic resin composition portion is extremely high. In addition, since the synthetic resin composition is a combination of the synthetic resin absorbed into the mouth and made into fibers and the inorganic fibers as reinforcing fibers, the adhesive action between the aggregates is reduced. All the processes are performed in a linear manner. In addition, ultrafine voids are formed in the voids between the aggregates because there are also inorganic fibers such as glass fibers and fibrous materials such as rock wool absorbing liquid synthetic resin. As a result, strength improvement that could not be obtained with the conventional liquid synthetic resin alone was obtained, and because the voids between the aggregates were extremely fine, dust and earth and sand particles could not be completely clogged. This makes it possible to use pavements and blocks that have a water-permeability function that does not easily clog.

When the aggregate is mixed and kneaded with the synthetic resin composition of the present invention to obtain a pavement block having water permeability, not only crushed stone but also coarse sand, fine sand, stone powder, etc. It can be a mixture of coarse particles and a mixture of fine particles. The mixing ratio of the synthetic resin composition and the aggregate is not particularly limited, but usually the synthetic resin composition is 3 to 15% by weight, more preferably 4 to 7% by weight based on the weight of the aggregate. Mix at about%.

The method of performing pavement using the synthetic resin composition of the present invention is the same as that of the conventional permeable pavement. The aggregate obtained by mixing and kneading the aggregate with the synthetic resin composition may be paved. In addition, in such a permeable pavement, rainwater penetrates into the lower roadbed through the pavement, so that the bearing capacity of the roadbed is reduced, and in winter, the water that has permeated the roadbed freezes. It may expand and push up the pavement. To prevent this, for example, as shown in Fig. 1, At the time of construction, from the pavement 1 to the subgrade 2, a columnar drain material 3 made of a water-permeable material formed by mixing, kneading and forming an aggregate with the synthetic resin composition of the present invention in the same manner as the pavement 1 By penetrating the roadbed 4, rainwater is guided from the pavement 1 directly to the subgrade 2 through the permeable drain material 3, which reduces the bearing capacity of the roadbed 4 due to the penetration of rainwater. However, it is possible to prevent the pavement 1 from being lifted by the expansion of the water that has penetrated into the roadbed 4. In addition, as described above, by guiding rainwater to the subgrade 2 which is the original ground, bacteria necessary for plants are killed due to drying in the ground, and the growth of street trees is deteriorated because water is not strengthened. This can be prevented. Further, conversely to the above, when the subgrade 2 contains excessive water, the moisture in the subgrade 2 is evaporated from the surface of the pavement 1 through the drain material 3 to form the subgrade 2. It is also possible to prevent a decrease in supporting force.

The shape and size of the drain material 3 are not particularly limited, and various shapes such as a columnar shape, a prismatic shape, and an outer diameter can be used. Also, the number of installations may be appropriately determined according to the situation at the construction site.

Further, as described above, the synthetic resin composition of the present invention has surprising strength, so that even in the production of an FRP structure, the conventional liquid synthetic resin is replaced with a liquid synthetic resin fiber of the present invention. The strength of FRP is further doubled by substituting the synthetic resin composition described above.

Furthermore, when a container was molded using the synthetic resin composition of the present invention, and the PCB was placed in the container and sealed and subjected to an elution test, the result was that the PCB was completely sealed in the container. Have also gained. Specifically, as shown in Examples described later, when a container was molded with the synthetic resin composition of the present invention, and a PCB was sealed and subjected to a dissolution test, no dissolution of the PCB was detected. . In addition, no elution of n-hexane in which the PCB was dissolved was detected at all, and even in the case of incinerated ash containing various harmful heavy metals, as shown in the examples described later. The synthetic resin composition of the present invention was kneaded with the incinerated ash to form a 9 mm-thick plate and solidified, but no elution of harmful substances was detected. According to the fibrous synthetic resin composition of the present invention, a thin film function of a conventional liquid synthetic resin can be completely made to act as a thick film. In other words, conventionally, even if a liquid binder containing a synthetic resin as a main component is kneaded with a base material such as an aggregate, the synthetic resin itself undergoes a chemical change and is allowed to undergo curing within a usable time zone until curing starts. There was a drawback that the phenomenon of sinking was always caused and a uniform adhesive effect could not be obtained. On the other hand, the synthetic resin composition of the present invention not only enables kneading with the aggregate even at a low temperature, but also can obtain a uniform adhesive effect without causing a settling phenomenon. Further, in conventional water-permeable pavements and materials, water permeability depends on the void volume generated between the aggregates, so that the void volume is large and the voids are liable to be clogged with dust and earth and sand. However, in the case of a water-permeable pavement or a water-permeable material using the synthetic resin composition of the present invention, the voids between the aggregates have an ultrafine void structure due to the fibrous synthetic resin or inorganic fibers. As a result, dust and dirt particles cannot be completely clogged, allowing only water and air to pass through. Further, the synthetic resin composition of the present invention can be mixed with the aggregate at room temperature without heating even though it has an extremely high viscosity. Furthermore, in the case of a two-component synthetic resin consisting of a main agent and a curing agent, the main agent is absorbed into rock wool to form a fiber, and even if the viscosity is as high as 100,000 cps, for example, the viscosity is as low as 0 X: low temperature. It can be mixed with the aggregate without heating even underneath. Even if a low-viscosity curing agent of about 160 cps is then added and mixed, there is no problem in curing. That is, when a two-part liquid synthetic resin composed of a main agent and a curing agent is used, usually, the main agent of the synthetic resin and the curing agent are first mixed well, and then kneaded with the aggregate or the like, or It can be used as it is as an adhesive, or it can be put into a mold as a molding material and cured. On the other hand, when the synthetic resin composition of the present invention is used for an adhesive, it can be kneaded with an aggregate and then mixed with a curing agent.

As described above, the synthetic resin composition of the present invention, which is used by forming a liquid synthetic resin into fibers and increasing the viscosity thereof, can function as a thick film as desired. In addition, as described above, the pressure resistance during curing of the liquid synthetic resin alone is 3550 per cm ^2. if kg, and pressure resistance of 1 cm ² per during curing of fiberizing ultra high viscosity synthetic resin composition in accordance with the present invention with the same resin was improved to 1 3 1 1 kg . Also, in the present invention, since the liquid synthetic resin is absorbed into rock wool and fiberized, stone powder and the like do not extremely absorb the liquid synthetic resin, and fine particles such as stone powder and fine sand are stable as aggregates. This makes it possible to obtain a high-strength, clogging-free permeable pavement or permeable material. Further, the strength of the FRP molded with this synthetic resin composition is remarkably improved as compared with the conventional FRP. Further, containers made of this synthetic resin composition can completely contain harmful substances such as PCBs. BRIEF DESCRIPTION OF THE FIGURES

Fig. 1 Explanatory sectional view showing a construction example of permeable pavement.

FIG. 2 is an explanatory view of a harmful substance enclosing container using the synthetic resin composition of the present invention, wherein (a) is a schematic perspective view and (b) is a schematic sectional view.

Figure 3 Schematic of the permeability test method.

Figure 4 Schematic of the bending test method. BEST MODE FOR CARRYING OUT THE INVENTION

(Examples 1 and 2)

After the vinyl ester resin (Ripoxy AC 201, Showa Polymer Co., Ltd.) is absorbed into rock wool by the composition shown in Table 1 below, glass fiber coated with a polyester resin is mixed. Powdered cellulose was added and mixed 5 times every 3 minutes to obtain a synthetic resin composition of the present invention. Here, the rock wool was produced from lava melted at high temperature by mixing several kinds of medium and soft hardness rocks into slag after iron was melted at high temperature and iron was taken out. Fiber was used. This rock wool becomes about 95 g when 10 g of the rock wool absorbs water to a saturated state. It has a percentage of absorption. In addition, as the glass fiber, a glass fiber produced from lava obtained by melting silica as a raw material of glass at a high temperature and coated with a polyester resin to improve the strength was used.

Table 1 Composition of synthetic resin composition

Next, an aggregate having the composition shown in Table 2 below, a hardener and a hardening accelerator were added to the synthetic resin composition using a mortar mixer (manufactured by Tesco Corporation, capacity: 20 L, power: 200 V, stirring blades; hooks), first, the aggregate was added to the resin composition while stirring, and the mixture was stirred for 2 minutes, and then the curing accelerator was added. The mixture was stirred for 2 minutes, and then a curing agent was added and kneaded for another 3 minutes.

Table 2 Aggregate composition (% by weight)

Table 3 Composition of kneaded material

Using the kneaded material kneaded as described above, prepare a 10X10X40c bending specimen in accordance with "How to make a specimen for strength test of JISA 1132 concrete" and strike the specimen. Two days after the installation, the mold was removed, and a bending test was performed on an 8-day air-cured test specimen in the standard condition by the three-point load method according to “JISA 1106 Concrete Bending Test Method”. Table 4 shows the bending test results. Similarly, a cylindrical test specimen of φ100 × 200 mm was prepared using the kneaded material of Example 1 above, and a strength test was performed in accordance with the Cement-Concrete Compressive Strength Test Method. It was also described in.

Table 4 Test results

Bending test result Strength of cylindrical specimen

Strength (NZmm ² ) Average value (NZinm ² ) (N / mm ² )

1 28

Example 1 1 0.47 0.8.82

1 0.87

8. 98

Example 2 8.72 8.87

8. 90

(Example 3)

Epoxy resin (two-pack) was used as the liquid synthetic resin. In addition, the same rock rolls and glass fibers as those in Examples 1 and 2 were used.

This rock wool was absorbed with an epoxy resin of the present invention having a viscosity of 16000 cps or less until it became saturated. Next, mixing was performed slowly to disperse the fibers of the wool that absorbed the epoxy resin. Next, the glass fiber coated with a synthetic resin is mixed with rock wool that has absorbed the epoxy resin in an amount of 3% by weight based on the amount of the epoxy resin so that the rock wool and the glass fiber are entangled. Mixing. Next, in order to thicken this mixture of rock wool and glass fiber to about 80,000 cps, 5 weight% of calcium carbonate with respect to the amount of epoxy resin was used as a thickener, and this was divided into 5 parts. After adding the batch and mixing well for 10 minutes, the second thickener was added and mixed for 10 minutes. Next, the thickener was added for the third, fourth, and fifth times, and the thickening operation was similarly performed for 10 minutes each to obtain the synthetic resin composition of the present invention. Next, 0.1 g of PCB standard solution was added per 1 g of soil to make a sample, and the PCB content in this sample was determined. A hardening agent was added to the above synthetic resin composition to obtain a diameter d of 100 mm, a height h of 50 mm, and a wall thickness t shown in FIG. Create a container with a lid of 8 mm and an inner diameter of 84 mm, enclose 70 g of the sample in the container, seal the lid with the same synthetic resin composition as above, and determine the PCB elution amount according to the following conditions. Was. The PCB standard solution used was an n-hexane solution. Considering the homogenization of the sample, n-hexane was added at a rate of 1 ml per 10 g of soil to wet the soil.

[Immersion conditions]

According to the following sections, the sample was placed in a glass beaker and subjected to a standing immersion test.

• Immersion solvent: Distilled water was adjusted to pH 4.0 with hydrochloric acid.

· Solvent ratio: The immersion solvent was 2 m 1 per 1 cm ² of the surface area of the sample. • Temperature condition: 40 soil 1 in a thermostat.

• Immersion time: 48 hours.

[Measurement items and methods]

Measurement item: P CB

Measurement method: JIS—K—0093 (Gas chromatography)

〔Measurement result〕

-Sample PCB content: 0.10mg / kg

• Results of immersion dissolution test from inclusions: ND (lower limit of quantification (0.0003mg / kg) or less)

〔Test results〕

Since the amount of the immersion eluate used in this measurement was 640 ml, the elution amount was determined by the following equation. Here, C: When the PCB concentration (mgZm 1) of the immersion eluate is set to the lower limit of quantification of 0.003 mgZkg,

PCB elution amount (^ g) <CX640

<0.19

Since the amount of enclosed PCB is 7 / ig, the elution ratio of PCB from the enclosed sample is 3% or less. In the chromatogram, P CB (molecular weight 300 to 60 The pattern of 0) was not confirmed at all, and it can be said that there was no elution amount.

(Example 4)

The following items were measured in the same manner as in Example 3 except that the ones shown in Table 5 below were used as samples instead of the PCB standard solution. Table 5 shows the results.

[Measurement items and methods]

-Cadmium: JIS—K-1 0 102 5 5 (Atomic absorption spectrophotometry)

J I S—K-1 0 1 02 54 (Atomic absorption spectrophotometry)

• Hexavalent chromium JIS-K 0 1 0 2 6 5 (diphenylthiocarbazide absorption spectrophotometry)

• Arsenic JIS—K-1 0 02—6 1 (silver getyl thiocarbamate spectrophotometry)

• Total mercury Announcement of the Environment Agency No. 59 Appendix 3 (Atomic absorption spectrophotometry)

• Alkyl mercury: Announcement of the Environment Agency Notification No. 59, Appendix 4 (Gas chromatographic method) '' Cyan: JIS—K— 0102—38 (birazolone 4-pyridinecarboxylate spectrophotometric method)

Organophosphorus Notification of Environment Agency No. 59 Appendix 1 (Gas Chromatography) PCBJIS-K-1 00 93 (Gas Chromatography) Copper JIS-K-1 0 102-2 5 2 (Atomic Absorption Spectrophotometry)

ND: Below the lower limit of quantification, (): Elution from ash itself:

(Example 5)

From the mixture of the same synthetic resin composition used in Example 3 and the samples shown in Table 6 below, a flat water-impermeable block of 100 X 185 X 9 mm was formed, and the same as in Example 4 A dissolution test was performed. Table 6 shows the results.

Table 6 Measurement results (unit: mg Z 1)

ND: less than the lower limit of quantification, (): elution amount from ash itself

(Example 6)

The same synthetic resin composition used in Example 3 was mixed with an aggregate of Omm to l Omm so that the amount of the synthetic resin composition was 7% by weight with respect to the aggregate. Of the amount of the synthetic resin was added and mixed to form a flat plate block of 300 × 300 × 30 mm. In this case, the mixture mixed with the aggregate was placed in a mold, pressed with a plasterer's iron to form the mixture, and immediately removed from the mold. This plate block had a bending strength of 95 kg / cm ² .

(Example 7)

15 kg of rock wool is added with 1 000 kg of unsaturated polyester resin and absorbed, and then 5 kg of carbon fiber is added and kneaded, and then 300 g of calcium carbonate is mixed as a thickener. Synthetic resin set with viscosity of 1500 cps A product was prepared and a 500 mm × 500 mm × 10 mm FRP board was formed. The FRP board could not be destroyed by hammering.

(Example 8)

The same synthetic resin composition as in Example 7 and crushed stones having a dense grain mixture were mixed so that the synthetic resin composition was 6% by weight based on the weight of the aggregate, and a test piece of 100 mm × 10 mm × 600 mm was obtained. prepared by Tezume, it results flexural strength test was rows, to obtain a 1 08 k gZc m ^2.

(Example 9)

Add 100 parts by weight of epoxy resin to 4 parts by weight of rock wool, absorb until saturated, and mix gently. Next, 3 parts by weight of the glass fiber covered with the synthetic resin is mixed with respect to the amount of the epoxy resin, and the mixture is mixed so that the mouth wool and the glass fiber are entangled well. Next, in order to thicken this mixture, 4 parts by weight of diphenylmethane diisocyanate with respect to the amount of epoxy resin was added as a thickener and mixed well to carry out a thickening operation. Obtain a synthetic resin composition. An aggregate having the composition shown in Table 7 and 35% by weight of a curing agent based on the synthetic resin composition are added to the synthetic resin composition and kneaded, and a water-permeable flat plate is prepared from the kneaded product.

Table 7

The permeability test, bending test, abrasion test and wheel tracking test were performed on the permeable plate prepared as described above, and the results are shown in Tables 8 to 11. Table 8 Permeability test results

Specimen number No. 1 No. 2 No. 3 Average value Permeability

5.80X10 "'5.87X10" ¹ 8.04X10 "' 6.57X10— ¹

(cm / sec) Table 9 Bending test results

No. 1 No. 2 No. 3 Average value Bending strength load

21.8 21.5 19.9 21.1

(KN) Table 10 Wear test results

Test time 15 minutes 30 minutes 60 minutes 90 minutes 120 minutes Wear amount

0.23 0.54 0.96- 1.36 1.78

(mm) Wheel tracking test result

The details of each of the above tests are shown below.

Table 13 Test objectives and methods

Test item Test purpose Test method

Permeability test Permeability Performance Based on the “Permeability test method on site” shown in “Pavement Test Method Handbook”, edited by The Japan Road Association.

Bending test Bending strength J I S A 5304-1994 Bending test method for “Pavement concrete plate”.

Abrasion test Abrasion resistance ASTM C 779 “Abrasion resistance test method for horizontal concrete surface”.

Wheel Tora Fluid resistance Based on the “Wheel Tracking Test Method” shown in the “Pavement Test Method Handbook” edited by the Japan Road Association and shown in the “Keeping Test”. [Permeability test method]

As the tester, use the on-site permeability tester (manufactured by Daiwa Ken-E Co., Ltd., type: DB-34) shown in Fig.

(1) Specimen (300X 300X 60mm) Thoroughly clean the surface.

(2) Attach a string of oily clay with a diameter of about lcm to the bottom of the outer periphery of the bottom plate of the tester.

(3) Press the tester against the flat plate surface to prevent water leakage from the oily clay part, and place a donut weight on the bottom plate.

(4) with a basis weight X i from the cylindrical portion upper surface to a position of 100 ml, put X ₂ from X i to the position of 400 ml.

(5) Close the cock and pour water up to the top of the cylinder.

(6) fully opened cock once, the water level in the cylindrical portion, the elapsed time decreases to X ₂ (sec) was measured with a stopwatch from records.

(7) Repeat steps (5) and (6) three times in total. In addition, leave an interval of 1 minute for each measurement.

(8) Calculate the average time of three times in seconds. This average time is the time required for 400 ml of water to flow down.

(9) Calculate the amount of water flowing down per 15 seconds from the calculated average time, and use it as the amount of water permeation (ml / 15 seconds).

[Bending test method]

As the tester, the one specified in “JISB 773 3 Compression Tester” shown in Fig. 4 (made by Maekawa Test Instruments, Model: Compression test weighing tester with 100 t weight) is used.

(1) Specimen (300 X 300 X 60) shall be installed on the test machine as shown in Fig. 4.

(2) Loading was performed by setting the span L to 240 mm and applying a load to the center of the span. The maximum load indicated by the machine is defined as the bending strength load.

(3) A rubber plate is applied to the pressing and supporting surfaces of the specimen so that the load is evenly distributed. [Wear test method]

The test machine used was a test device that was manufactured so that it could be tested in accordance with ASTM C7779 “Abrasion resistance test method for horizontal concrete surface”.

(1) The dimensions of the specimen shall be 300 ππη 300 300 min x 50 mm thick.

(2) The wear tester rotates a 30 cm diameter disk at 12 rpm by means of a geared motor at the top of the tester, and three 6 cm diameter wear wheels mounted on this disk rotate at 280 m. and, abrasive wear surface during the test (No.60 of Kabora random) amount of 4-6 g / min it is continuously sprayed, wear specimens top donut shape at a surface pressure of 108 g / cm ^2.

(3) A method for measuring the amount of wear is as follows.A chip for fixing the legs of the measurement plate is attached to the four corners of the test piece, and the depth from the upper surface of the measurement plate installed on the test piece to the upper surface of the test piece is measured. Measure 24 points using a digital dial gauge (l / lOOmm).

(4) The results are displayed by measuring the wear amount every 15 minutes up to the wear time of 30 minutes (total of 15 minutes after 7.5 minutes of operation and 7.5 minutes of reverse rotation, and then 120 minutes every 30 minutes). The wear depth for each hour is indicated by the average value of 24 points.

[Wheel tracking test method]

The tester used is a wheel tracking tester (made by Macross, MODEL NO .: T-332). The test conditions are as follows. · Travel type: Crank type

'' Tire rubber hardness: 20:: [IS hardness 84 ± 4, 60〗 IS hardness 78 ± 2

-Load: 70 ± 1 kgf (Ground pressure 6.456kgf / cm ² ) • Loading method: Vertical

• Number of runs: 42 Sat once Z dragon

• Mileage: 230 ± 10min

• Test temperature: 60 ± 2

• Curing time: 5 hours

• Test duration: 60 minutes

(1) From the results measured under the above conditions, the dynamic stability is obtained from (Equation 1 1),

D S = 4 2 X {(tt (dd,)) X C! XC (Equation 1 1)

DS: Dynamic stability (times Z marauder)

Displacement at t, (45 minutes in standard case) (mm)

Displacement at d ₂ t ₂ (60 minutes as standard) (mm)

Correction coefficient when using a variable speed drive type test machine with crank:

1.0

C Correction coefficient when using test specimens (300 mm width) prepared indoors and on site = 1.0

(2) For accuracy, calculate the coefficient of variation. The coefficient of variation is calculated as the standard deviation from the dynamic stability of each test result, divided by the average of the standard deviations, and expressed as “%”. If the coefficient of variation exceeds 20%, estimate the cause and check the test method, and perform additional tests if necessary. Industrial applicability

The synthetic resin composition of the present invention is kneaded with the aggregate as an adhesive to prevent clogging, excellent retention, less heat reflection, and almost no topping of the aggregate. No pavement having water permeability can be obtained. In addition, the pavement can provide a road excellent in noise reduction and abrasion resistance by absorbing the frictional noise of the tire. Also, in the production of many blocks, such as gratings, interlocking, and flat blocks, mass production can be performed in the same manner as the production of conventional secondary cement products. In addition, stone powder and fine sand can be completely kneaded, solidifying contaminated soil with harmful substances, encapsulating harmful substances such as PCBs, plastic waste materials, glass chips, wood and fir husks, rubber chips, Recycling of many waste materials such as shell pieces is also possible. In addition, there is no cement-like contamination in revetment construction. In addition, in the construction of sabo dams and drainage of retaining walls, it is possible to obtain the effect of retaining soil and discharging only water and not clogging. Further, since this synthetic resin composition has a function of a thick film, it is also effective as a paint for preventing water leakage and rain leakage from dams, pools and buildings.

Claims

The scope of the claims

I. Liquid synthetic resin, rock wool absorbing the liquid synthetic resin, at least one inorganic fiber selected from the group consisting of glass fiber, carbon fiber and aluminum fiber, and a thickener And a synthetic resin composition comprising:

2. The synthetic resin composition according to claim 1, wherein the rock wool is made to absorb a liquid synthetic resin to a saturated state.

3. The synthetic resin composition according to claim 1, wherein the inorganic fibers are mixed with the liquid synthetic resin at a ratio of 1 to 30% by weight.

4. The synthetic resin composition according to claim 1, wherein the thickener is mixed with the liquid synthetic resin at a ratio of 1 to 15% by weight.

5. The synthetic resin composition according to claim 1, further comprising a curing agent for the liquid synthetic resin.

6. The synthetic resin composition according to claim 1, further comprising a curing accelerator.

7. The liquid synthetic resin is at least one kind of thermosetting resin selected from the group consisting of vinyl ester resin, unsaturated polyester resin, epoxy resin, urethane resin and thermosetting acrylic resin. The synthetic resin composition according to claim 1, which is a fat.

8. The synthetic resin composition according to claim 1, wherein the liquid synthetic resin is obtained by dissolving a synthetic resin in a solvent.

9. The synthetic resin composition according to claim 8, wherein the glass fiber is coated with a synthetic resin that is not dissolved in a solvent of the liquid synthetic resin absorbed in the rock wool.

10. The synthetic resin composition according to claim 1, wherein the thickener is at least one selected from the group consisting of isocyanates, powdered cellulose, and calcium carbonate.

II .: Aggregate is mixed and kneaded with the synthetic resin composition described in any of! A permeable pavement that is laid and rolled.

2::! A water-permeable material obtained by mixing, kneading, and compression-molding an aggregate with the synthetic resin composition according to any one of items 1 to 10.