JP2009012995A - Aggregate regeneration method, aggregate and flooring - Google Patents

Abstract

The present invention provides a flame retardant material that is easy to manufacture, has excellent flame retardancy, and can reduce the generation of toxic gas, a method for manufacturing the flame retardant material, and a flooring material for a railway vehicle.
A collection step # 110 is a step of collecting waste floor material 3 ′ from a floor structure 1 of a scrap car. In the collecting step # 110, the floor finishing material 4 is separated from the waste floor material 3 ′ using a heavy machine or the like from the floor structure 1 of the scrap car shown in (A), and the waste floor material 3 ′ is separated from the floor board 2, As shown in (B), it is accommodated in the combustion container 5. The combustion process # 120 is a process of burning the waste floor material 3 ′, and as shown in (C), the synthetic resin R such as an epoxy resin adhesive in the waste floor material 3 ′ is thermally decomposed and vaporized. Remove from waste flooring 3 '. The separation step # 130 is a step of separating the aggregate A from the waste floor material 3 ′ after the combustion step # 120, and the aggregate A and the silica sand S, which is an impurity other than the aggregate A, from the waste floor material 3 ′ and The powder material P is selected.
[Selection] Figure 3

Description

  The present invention relates to a method for reclaiming aggregate from waste floor material, an aggregate regenerated from waste floor material, and a floor material containing aggregate regenerated from waste floor material.

  The conventional floor structure includes an uneven metal keystone plate, a reinforcing cover member made of a hard material that closes the concave portion of the keystone plate, a lightweight aggregate and an epoxy applied to the upper surface of the keystone plate and the upper surface of the reinforcing cover member. An intermediate coating material made of resin and a top coating material made of an epoxy resin applied to the upper surface of the intermediate coating material are provided (for example, see Patent Document 1). In such a conventional floor structure, since a space is formed between the keystone plate and the reinforcing cover member, the weight is further reduced and the strength is improved.

JP 7-54431 A

  In conventional railway vehicles, structures and equipment are cut by heavy machinery when scrapped, shredded by an intermediate processor, and then discarded as industrial waste. Railroad car flooring is mainly filled with artificial lightweight aggregates made of clay minerals at a high temperature and molded with epoxy resin adhesive as intermediate coatings. Since they are firmly bonded, they cannot be separated and are treated as industrial waste when they are scrapped, reaching approximately 1,000 kg per vehicle. In recent years, non-reusable materials that are no longer needed have been discarded as waste, processed again from reusable materials, and reused for the same or different purposes. If the aggregate taken out from the floor material of the scrapped vehicle is reusable as the aggregate of the floor material of the new vehicle, the vehicle recycling rate can be improved.

  An object of the present invention is to provide an aggregate regeneration method, an aggregate, and a flooring material that can easily recycle the aggregate from the waste flooring material and improve the recycling rate by reusing the aggregate. It is to be.

The present invention solves the above-mentioned problems by the solving means described below.
In addition, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this embodiment.
As shown in FIGS. 2 and 3, the invention of claim 1 is an aggregate regeneration method for regenerating aggregate (A) from waste floor material (3 ′), in which the waste floor material is burned. The aggregate regeneration method (# 100) includes a step (# 120) and a separation step (# 130) for separating the aggregate from the waste floor material after the combustion step.

  The invention according to claim 2 is the aggregate regeneration method according to claim 1, wherein the burning step includes a step of thermally decomposing and removing the synthetic resin (R) from the waste floor material. This is a method for reclaiming aggregates.

  According to a third aspect of the present invention, in the aggregate regeneration method according to the first or second aspect, the separation step includes a step of selecting the aggregate and impurities other than the aggregate from the waste floor material. It is the reproduction | regeneration method of the aggregate characterized by including.

  According to a fourth aspect of the present invention, in the aggregate regeneration method according to the third aspect, the separation step includes a step of selecting the aggregate exceeding a predetermined particle size from the waste floor material. This is a method for reclaiming aggregates.

  According to a fifth aspect of the present invention, in the aggregate regeneration method according to the fourth aspect, as shown in FIG. 4, a crushing step (# 140) for crushing the aggregate after the separation step into a predetermined particle size. It is the reproduction | regeneration method of the aggregate characterized by including.

  The invention of claim 6 is an aggregate regenerated from the waste floor material (3 ') as shown in FIGS. 1 and 3, and can be separated from the waste floor material by burning the waste floor material. It is an aggregate (A) characterized by being.

  The invention according to claim 7 is the aggregate according to claim 6, wherein the aggregate is crushed to a predetermined particle size.

  The invention of claim 8 is a flooring containing aggregate (A) regenerated from waste flooring (3 ′), as shown in FIGS. 1 and 3, wherein the reclaimed aggregate is: The floor material (3) is characterized in that it can be separated from the waste floor material by burning the waste floor material.

  The invention of claim 9 is the flooring according to claim 8, wherein the recycled aggregate is crushed to a predetermined particle size.

  The invention according to claim 10 is the flooring according to claim 8 or 9, characterized in that it contains the regenerated aggregate and a new aggregate (A).

  The invention according to claim 11 is the flooring according to claim 10, wherein the new aggregate is separable from the waste flooring material by burning the waste flooring material. It is a material.

  The invention of claim 12 is the flooring according to claim 10 or claim 11, wherein the new aggregate is crushed to a predetermined particle size.

  According to the present invention, the aggregate can be easily regenerated from the waste floor material, and the recycle rate can be improved by reusing the aggregate.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view schematically showing a floor structure constructed by a floor material containing aggregate according to the first embodiment of the present invention.
A floor structure (floor structure) 1 shown in FIG. 1 is a basic structure at the lower part of a vehicle body, and has a function of supporting the weight of passengers, luggage, cargo, service facilities, and the like in the vehicle. The floor structure 1 is constructed on a frame configured in a beam shape, bears the strength against the load and torsion of the front and rear of the vehicle body, and is designed to provide sound insulation and heat insulation in the vehicle and to take fire prevention measures. . As shown in FIG. 1, the floor structure 1 includes a floor board 2, a flooring material (flooring material) 3, a floor finishing material (flooring material) 4, and the like. The floor structure 1 is manufactured in a multilayer structure by a wet method in which a liquid resin is applied onto the floor board 2 to form a floor material 3. The floor structure 1 varies from the upper surface of the underframe to the upper surface of the floor finishing material 4 depending on the type of vehicle. It is constructed with a thickness of.

  The floor board 2 is a member constituting the vehicle interior among the constituent elements of the floor structure 1, and is a plate material constituting a part of the floor structure 1. The floor board 2 shown in FIG. 2 is a corrugated steel sheet (keystone plate (deck plate)) such as stainless steel whose cross section is formed into a trapezoidal shape or a rectangular shape (concave and convex shape). The buckling resistance is improved. The floor board 2 is laid on the underframe of the vehicle body.

  The floor material 3 is a member filled between the floor board 2 and the floor finishing material 4, and aggregate (regenerated aggregate) A regenerated from the waste floor material, or the regenerated aggregate A and a new one. Aggregate A is contained. The flooring 3 has sound insulation and heat insulation effects, and is constructed to a predetermined thickness (for example, about 7.5 mm) according to the type of vehicle. As shown in FIG. 1, the flooring 3 has a multilayer structure, and includes an undercoat flooring 3a, an intermediate coating flooring 3b, and topcoat flooring 3c and 3d. The undercoat flooring 3a is a member applied to the surface of the floor board 2, and an operator applies a synthetic resin R such as an epoxy resin adhesive to the surface of the floor board 2 with a predetermined thickness using a brush. The surface is finished smoothly.

  The intermediate coating floor material 3b is a member applied to the surface of the undercoating floor material 3a, and a mixture of synthetic resin R and aggregate A such as an epoxy resin adhesive is applied to the surface of the undercoating flooring material 3a with a predetermined thickness. It is applied and finished smooth. The aggregate A is a regenerated product regenerated from the waste floor material or a mixture of the regenerated product and a new product, and can be separated from the waste floor material by burning the waste floor material. Aggregate A is obtained by regenerating an artificial lightweight aggregate obtained by firing clay mineral at a high temperature. As such an artificial lightweight aggregate, for example, a kaolinite clay mineral which is a naturally occurring mineral is fired at 1000 to 2000 ° C., and the raw stone composition is kaolinite, montmorillonite, sericite, silicic acid Contains iron oxide and alkaline earth oxides. Such artificial lightweight aggregate is used as, for example, a floor aggregate for railway vehicles having a fire resistance of 1000 ° C. or higher, and a large number of pores are formed inside, but the surface is covered with a synthetic resin R. Even if this is done, the synthetic resin R hardly penetrates into the interior and maintains the hollow state. The intermediate coating material 3b is an uneven portion of the floor board 2 in which an operator uses a plastering trowel with a mixed material obtained by kneading the epoxy adhesive used as a binder of the aggregate A and the aggregate A. It is formed by being filled so as to fill in.

  The top coat 3c is a member applied to the surface of the intermediate coat 3b, and a mixture of a synthetic resin R such as an epoxy resin adhesive and silica sand S is applied to the surface of the intermediate coat 3b. A trowel is used by the worker to fill the surface with a predetermined thickness (for example, about 1 mm) and finish it smoothly. The topcoat flooring 3d is a member applied to the surface of the topcoat flooring 3c, and a mixture of a synthetic resin R such as an epoxy resin adhesive and a powder material P is applied to the surface of the topcoat flooring 3c for a plasterer. The trowel is used by an operator and is painted and smoothed at a predetermined thickness (for example, about 1 mm).

  The floor finishing material 4 is a member constructed on the top surface of the floor structure 1 and is a rug used for surface finishing of the floor structure 1. The floor finish 4 is, for example, a plate made of synthetic resin such as vinyl chloride or linoleum, and is adhered and pasted to the surface of the top coat 3d of the floor 3 with an adhesive or the like.

Next, an aggregate regeneration method according to the first embodiment of the present invention will be described.
FIG. 2 is a process diagram for explaining the aggregate regeneration method according to the first embodiment of the present invention. FIG. 3 is a schematic diagram for explaining an aggregate regeneration method according to the first embodiment of the present invention. FIG. 3 (A) shows a state before regeneration processing, and FIG. 3 (B) is a collection step. FIG. 3C shows a state during the combustion process, and FIG. 3D is a schematic diagram showing a state during the separation process.

  Regeneration method # 100 shown in FIG. 2 is a method of regenerating aggregate A from waste floor material, and includes collection step # 110, combustion step # 120, and separation step # 130. The collecting step # 110 is a step of collecting the waste floor material 3 ′ from the scrap car floor structure 1 shown in FIG. The waste floor material 3 ′ shown in FIG. 3 has the same structure as the floor material 3 shown in FIG. 1, and contains aggregate A that can be separated from the waste floor material 3 ′ by burning the waste floor material 3 ′. is doing. In the collecting step # 110, the floor finishing material 4 is separated from the waste floor material 3 ′ using a heavy machine or the like from the floor structure 1 of the scrap car shown in FIG. 3A, and the waste floor material 3 ′ is separated from the floor board 2 Then, as shown in FIG. 3B, the lump of the waste floor material 3 ′ is manually collected, and the lump of the waste floor material 3 ′ is collected in the combustion container 5. The combustion container 5 shown in FIGS. 3B and 3C is a container for burning the waste floor material 3 ′, and is, for example, a waste drum can.

  The combustion process # 120 shown in FIG. 2 is a process for burning the waste floor material 3 ′. As shown in FIG. 3C, the combustion process # 120 is a process of thermally decomposing and removing the synthetic resin R from the waste floor material 3 ′, and the waste floor material 3 shown in FIGS. 3B and 3C. The epoxy resin adhesive of the undercoat flooring 3a, intermediate coat flooring 3b and topcoat flooring 3c, 3d is pyrolyzed and vaporized as shown in FIG. 3C to remove it from the waste flooring 3 '. To do. In the combustion step # 120, as shown in FIG. 3C, the combustion is performed in the combustion apparatus that burns using the residual heat of the incinerator or the like while the waste floor material 3 ′ is accommodated in the combustion container 5. The container 5 is carried in, and the waste floor material 3 ′ is burned in the combustion apparatus at a heating temperature lower than the heating temperature when the new aggregate A is fired. In the combustion process # 120, if the heating temperature is lower than 600 ° C., the epoxy resin adhesive in the waste floor material 3 ′ may not be efficiently removed. If the heating temperature exceeds 800 ° C., the aggregate A Since the physical properties may change, it is preferable to burn the waste floor material 3 ′ within a range of 600 to 800 ° C.

  The separation step # 130 shown in FIG. 2 is a step of separating the aggregate A from the waste floor material 3 ′ after the combustion step # 120. Separation step # 130 is a step of selecting aggregate A and impurities other than aggregate A from waste floor material 3 ′, and exceeds a predetermined particle size (for example, 3 mm or 5 mm) from waste floor material 3 ′. Aggregate A is selected. In the separation step # 130, as shown in FIG. 3 (D), the combustion container 5 is unloaded from the combustion apparatus, and the granular waste floor material 3 ′ after combustion is transferred from the combustion container 5 to the classification apparatus 6. The classifier 6 separates the aggregate A in the intermediate coating 3b and the quartz sand S and the powder P in the top coating 3c, 3d. The classifier 6 shown in FIG. 3 (D) is a classifier such as a screen sieve that sorts the aggregate A into impurities other than the aggregate A, and is smaller than the particle size of the aggregate A, and has silica sand S and powder. A material having a sieve opening (particle size mesh) larger than the particle size of the material P is used. In the separation step # 130, as shown in FIG. 3D, according to the size of the particle size of the aggregate A, the aggregate A is selected into several types (for example, four types) from the largest to the smallest. To do.

The aggregate regeneration method, aggregate and flooring according to the first embodiment of the present invention have the following effects.
(1) In the first embodiment, the waste floor material 3 ′ is combusted in the combustion process # 120, and the aggregate A is separated from the waste floor material 3 ′ in the separation process # 130 after the combustion process # 120. For this reason, it is possible to recycle and reuse the aggregate A from the waste floor material 3 ′ to improve the recycling rate.

(2) In the first embodiment, the synthetic resin R is thermally decomposed and removed from the waste floor material 3 ′ in the combustion step # 120. For this reason, the synthetic resin R such as the epoxy resin adhesive in the waste floor material 3 ′ can be vaporized and easily removed.

(3) In the first embodiment, in the separation step # 130, the aggregate A and impurities other than the aggregate A are selected from the waste floor material 3 ′. For this reason, the reusable aggregate A can be extracted by removing impurities such as the powder material P and the silica sand S in the waste floor material 3 ′.

(4) In the first embodiment, the aggregate A exceeding the predetermined particle size is selected from the waste floor material 3 ′ in the separation step # 130. For this reason, among the aggregate A regenerated from the waste floor material 3 ′, one having a particle size suitable for reuse in the floor material 3 can be selected.

(5) In the first embodiment, the aggregate A can be separated from the waste floor material 3 ′ by burning the waste floor material 3 ′. As a result, the aggregate A can be easily regenerated from the waste floor material 3 ′ and reused in the floor material 3. Therefore, the recycling rate of the waste floor material 3 ′ can be improved.

(6) In the first embodiment, the floor material 3 contains the regenerated aggregate A that can be separated from the waste floor material 3 ′ by burning the waste floor material 3 ′. For this reason, the aggregate A can be repeatedly regenerated from the waste floor material 3 ′, and the floor material 3 can be constructed safely and at low cost while maintaining the physical properties required for the aggregate A to some extent.

(7) In the first embodiment, the floor material 3 contains the regenerated aggregate A and the new aggregate A. For this reason, a part of recycled aggregate A can be used and mixed with new aggregate A, and flooring 3 can be constructed safely and at low cost. As a result, when only a small amount of aggregate A can be recycled from the waste floor material 3 ', the recycled aggregate A is mixed with the new aggregate A to effectively use the recycled aggregate A. The flooring 3 can be mass-produced.

(8) In the first embodiment, the new aggregate A can be separated from the waste floor material 3 ′ by burning the waste floor material 3 ′. As a result, the aggregate A can be regenerated as many times as possible from the waste floor material 3 ′ and recycled to the new floor material 3, so that the manufacturing cost of the floor material 3 can be reduced.

(Second Embodiment)
Next, an aggregate regeneration method according to the second embodiment of the present invention will be described.
FIG. 4 is a process diagram for explaining the aggregate regeneration method according to the second embodiment of the present invention. FIG. 5 is a schematic diagram for explaining an aggregate regeneration method according to the second embodiment of the present invention, FIG. 5 (A) shows a state before regeneration processing, and FIG. 5 (B) is a collection step. FIG. 5 (C) shows the state during the combustion process, FIG. 5 (D) shows the state during the separation step, and FIG. 5 (E) is a schematic diagram showing the state after the crushing step. is there. In the following, the same parts as those shown in FIGS. 1 and 3 are denoted by the same reference numerals and detailed description thereof is omitted, and the same processes as those shown in FIG. Therefore, detailed description is omitted.

  The crushing process # 140 shown in FIG. 4 is a process of crushing the aggregate A after the separation process # 130 into a predetermined particle size. In the crushing step # 140, as shown in FIG. 5E, the aggregate A exceeding the predetermined particle size among the aggregates A after the separation step # 130 is crushed until the particle size is reduced to the predetermined particle size. Generally, since the thickness of the intermediate coating material 3b may vary depending on the type of vehicle, the particle size of the aggregate A after regeneration depends on the thickness of the intermediate coating material 3b that reuses the aggregate A. Sometimes it is too big. For example, in the case of a railway vehicle, the particle size of the aggregate A used varies depending on the type of vehicle, and an aggregate A having an average particle size of 3 mm and an aggregate A having an average particle size of 5 mm are usually used. There are many cases. For this reason, reusing the aggregate A with an average particle size of 5 mm regenerated from the waste floor material 3 ′ to the floor material 3 that needs to use the aggregate A with an average particle size of 3 mm is a matter of workability and the like. Is not preferable. In the crushing step # 140, for example, an aggregate A having a particle size of 5 mm or more is crushed to an average particle size of 3 mm using a crushing device such as a crusher.

The aggregate regeneration method, aggregate, and flooring according to the second embodiment of the present invention have the following effects in addition to the effects of the first embodiment.
In the second embodiment, the aggregate A after the separation step # 130 is crushed into a predetermined particle size in the crushing step # 140. As a result, the size of the aggregate A can be adjusted to the optimum size according to the thickness of the floor material 3 that reuses the aggregate A regenerated from the waste floor material 3 ′. The aggregate A can be widely used to further improve recycling.

Next, examples of the present invention will be described.
(Collecting aggregate)
First, aggregates were collected from the actual scrap car bodies of railway cars. The flooring was separated from the floor structure (floor structure) using a heavy machine, and the lump of flooring was collected manually. As a result, it was confirmed that about 60% of the entire flooring can be collected regardless of the type of vehicle. Next, in order to thermally decompose and remove the epoxy resin adhesive used as a binder, a lump of flooring material was placed in a drum can and burned at 800 ° C. for about 8 hours using the residual heat of the incinerator. As a result, synthetic resins such as epoxy resin adhesives could be removed from almost all floor material blocks. It was also confirmed that there was a proportional relationship between the amount of air and heat supplied to burn the flooring and the amount of epoxy resin decomposed. Next, sieving was performed to remove the mortar, the iron pieces of the drum and the powder material from the floor material after combustion, and the aggregate was selected from the floor material after combustion. Below, the ratio of the aggregate which can be collect | recovered from the floor material of each vehicle type is shown in Table 1 for every particle size of aggregate.

  As shown in Table 1, in the case of East Japan Railway Company's 115 series vehicle, the weight of both floor materials is 1400 kg, and the floor material recovery weight that can be recovered from the waste car body is 700 kg (the floor material recovery rate is 50.0%), and the weight of recovered aggregate with a particle size of φ2.80 to 4.75 mm with the highest recovery rate was 269 kg. In the case of East Japan Railway Company's 201 series vehicle, the weight of the floor material for both cars is 690 kg, and the floor material recovery weight that can be recovered from the waste car body is 345 kg (the floor material recovery rate is 50.0%). The recovered aggregate weight with a particle size of φ0.85 to 2.80 mm with the highest recovery rate was 173 kg. In the case of East Japan Railway Company's E231 series vehicles, aggregates with an average particle size of 3 mm (particle size φ0.85 to 2.80 mm) are used, and 201 series vehicles have a particle size of φ0.85 to 2.80 mm. Compared to aggregates, it was confirmed that the percentage of reusable aggregates was smaller in aggregates with a particle size of φ2.80 to 4.75 mm for 115 series vehicles. For this reason, aggregates having a particle size of φ4.75 mm or more shown in Table 1 were crushed to have the same particle size, and the basic physical properties and workability of non-crushed products, crushed products and current products (new products) were evaluated. From the above, in the case of 115 series vehicles, out of the total floor weight of about 1400 kg, the aggregate can be taken out is about 140 kg (about 10% of the total weight), and in the case of 201 series vehicles, the total weight of flooring It was confirmed that about 690 kg of aggregate can be taken out about 180 kg (total weight ratio about 27%).

(Fundamental physical property evaluation test)
Next, the basic physical properties were evaluated using the non-crushed product, the crushed product and the current product as measurement samples. Here, the current product is an artificial lightweight aggregate (trade name: Unicaron) of Takara Kensaku Seisakusho Co., Ltd., currently used as a floor aggregate for railway vehicles, with an average particle size of 3 mm and an average particle size Were evaluated for two types of mixed aggregates of 3 mm + 5 mm. As for the non-crushed product, aggregates selected from two types with an average particle size of 5 mm and 3 mm by regenerating the existing artificial lightweight aggregate were evaluated. As for the crushed products, the aggregates obtained by regenerating the existing artificial lightweight aggregate into two types with average particle sizes of 5 mm and 3 mm were evaluated. The measurement item and measurement method are the same as the measurement item and measurement method for the aggregate of the current product. Physical property evaluation tests include crushing strength (manufacturer standard), specific gravity, depression strength (manufacturer standard), bending strength (JIS R 5201), compressive strength (JIS R 5201), water resistance, thermal conductivity (JIS A 1412), fatigue Tests (manufacturer standard), sound characteristics (manufacturer standard) and combustibility were conducted. Here, the manufacturer standard is a measurement method defined for the aggregate of the current product. Table 2 shows the evaluation results when the basic physical properties of the non-crushed product and the crushed product are compared with the basic physical properties of the current product.

  As shown in Table 2, for the non-crushed product, physical property values almost equivalent to the current product were obtained for all the contents of the basic physical property evaluation test. For this reason, it was confirmed that non-crushed aggregates can be reused for flooring of new cars. On the other hand, the crushed product was slightly inferior to the current product in terms of displacement due to water resistance and fatigue tests in the basic physical property evaluation test, but the thermal conductivity and sound characteristics were the same as the current product, and the flammability was It was nonflammable.

(Aggregate workability evaluation test)
Next, workability evaluation was performed using non-crushed products, crushed products and current products as construction samples. Here, as the non-crushed product, the crushed product, and the current product, the same measurement samples used in the basic physical property evaluation test were used. In the workability evaluation test, a floor filling structure was produced using the recycled aggregate and the workability evaluation was performed. As an evaluation method, using test samples of non-crushed products, crushed products, and current products, test specimens simulating actual vehicles were actually created by the workers, and opinions regarding the workability experienced by the workers through this creation process Was consolidated. The test piece was manufactured with the same thickness as that of the intermediate coating when an aggregate having an average particle diameter of 3 mm was used. Table 3 shows the evaluation results when the workability of the non-crushed product and the crushed product is compared with the current product.

  As shown in Table 3, the non-crushed product 3 mm was good and has the same workability as the current product. For this reason, it was confirmed that the non-crushed 3mm aggregate can be reused for flooring of new cars. For non-crushed products 5mm, when sanding to reduce the thickness of the intermediate coating to the finished thickness, large particles are peeled off and the surface of the keystone plate is exposed, as well as the trowel during work. However, the workability was slightly inferior to the current product. For the crushed product 5mm, the aggregate particles are sharp, so the construction is somewhat difficult compared to the current product, and the particle size of the aggregate is large, so the penetration amount of the top coat into the aggregate is compared to the current product There were many. For the 3mm crushed product, the construction was somewhat difficult compared to the current product because the aggregate particles were sharp.

  From the above results, it was confirmed that the non-crushed product 3mm has the same performance as the current product in both the basic physical property evaluation test and the workability evaluation test, and can be reused for flooring of new cars. It was. For non-crushed product 5mm, workability is slightly inferior to the current product when it is constructed with the same thickness as the intermediate coating when using aggregate with average particle size of 3mm. It was confirmed that a physical property value almost equivalent to that of the current product can be obtained for the basic physical property evaluation test. As a result, it was confirmed that non-crushed 5mm can be reused for flooring of new cars using aggregates with an average particle size of 5mm. For the 3mm crushed product and 5mm crushed product, it was confirmed that both the basic physical property evaluation test and the workability evaluation test were slightly inferior to the current product. It was confirmed that important performance such as was satisfied.

(Other embodiments)
The present invention is not limited to the embodiment described above, and various modifications or changes can be made as described below, and these are also within the scope of the present invention.
(1) In this embodiment, the waste floor material 3 ′ of the railway vehicle has been described as an example. However, the floor material such as an automobile, an aircraft, a ship or a building other than the railway vehicle, the waste material such as an interior material or an exterior material. The present invention can also be applied to. Further, in this embodiment, the case where the aggregate A is a floor aggregate for railway vehicles has been described as an example, but the present invention is also applied to an aggregate used as a resin-type lightweight filler or lightweight concrete. can do. Further, in this embodiment, the case where the aggregate A is a kaolinite clay mineral has been described as an example, but the present invention can also be applied to a pearlite-based or zeolite-based aggregate.

(2) In this embodiment, the case where the floor plate 2 is a keystone plate has been described as an example. However, for example, a double skin structure in which a vehicle outer surface plate and a vehicle inner surface plate are joined by a truss or a rib by an extruded material of aluminum alloy. The present invention can also be applied. Further, in this embodiment, the case where the synthetic resin R in the flooring 3 is an epoxy resin has been described as an example, but the present invention also applies to a case where it is a urethane resin, a polyester resin, a phenol resin, a vinyl ester resin, or the like. Can be applied.

(3) In this embodiment, the case where the non-crushed product or the crushed aggregate A is used as the intermediate coating floor 3b has been described as an example, but the aggregate obtained by mixing the non-crushed product and the crushed product is used. It can also be used. In this embodiment, the case where the aggregate A is crushed to an average particle diameter of 5 mm or an average particle diameter of 3 mm has been described as an example. However, the aggregate A can be crushed to an average particle diameter of 1 mm.

(4) In this embodiment, the case where the recycled aggregate A and the new aggregate A are the same type has been described as an example, but the recycled aggregate and the new aggregate are different types. The present invention can also be applied to cases where For example, reusable aggregate A and non-renewable aggregate can be mixed and used. In the second embodiment, the case where the recycled material aggregate A is crushed to a predetermined particle size and the flooring 3 is applied has been described as an example. However, the new aggregate A has a predetermined particle size. It can also be used after being crushed and mixed with recycled aggregate A.

It is sectional drawing which shows typically the floor structure constructed | assembled with the flooring containing the aggregate which concerns on 1st Embodiment of this invention. It is process drawing for demonstrating the reproduction | regeneration method of the aggregate which concerns on 1st Embodiment of this invention. It is the schematic for demonstrating the reproduction | regeneration method of the aggregate which concerns on 1st Embodiment of this invention, (A) shows the state before a regeneration process, (B) shows the state after a collection process, (C ) Shows a state during the combustion process, and (D) is a schematic view showing a state during the separation process. It is process drawing for demonstrating the reproduction | regeneration method of the aggregate which concerns on 2nd Embodiment of this invention. It is the schematic for demonstrating the reproduction | regeneration method of the aggregate which concerns on 2nd Embodiment of this invention, (A) shows the state before a regeneration process, (B) shows the state after a collection process, (C ) Shows the state during the combustion step, (D) shows the state during the separation step, and (E) is a schematic view showing the state after the crushing step.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor structure 2 Floor board 3 Floor material 3 'Waste floor material 3a Undercoat floor material 3b Middle coat floor material 3c, 3d Top coat floor material 4 Floor finish material 5 Combustion container 6 Classifier A Aggregate R Synthetic resin S Silica sand P Powder material

Claims (12)

An aggregate regeneration method for reclaiming aggregate from waste floor material,
A combustion step of burning the waste floor material;
A separation step of separating the aggregate from the waste floor material after the combustion step;
A method for reclaiming aggregates. The method for reclaiming aggregate according to claim 1,
The combustion step includes a step of thermally decomposing and removing the synthetic resin from the waste floor material;
An aggregate regeneration method characterized by the above. The aggregate regeneration method according to claim 1 or 2,
The separation step includes a step of selecting the aggregate and impurities other than the aggregate from the waste floor material;
An aggregate regeneration method characterized by the above. The method for reclaiming aggregates according to claim 3,
The separation step includes a step of selecting the aggregate exceeding a predetermined particle size from the waste floor material;
An aggregate regeneration method characterized by the above. The method for reclaiming aggregate according to claim 4,
Including a crushing step of crushing the aggregate after the separation step to a predetermined particle size,
An aggregate regeneration method characterized by the above. Aggregate regenerated from waste flooring,
Separable from the waste floor material by burning the waste floor material;
Aggregate characterized by The aggregate according to claim 6,
Being crushed to a predetermined particle size,
Aggregate characterized by A floor material containing aggregate regenerated from waste floor material,
The recycled aggregate is separable from the waste floor material by burning the waste floor material;
Flooring characterized by The flooring according to claim 8, wherein
The recycled aggregate is crushed to a predetermined particle size;
Flooring characterized by In the flooring material according to claim 8 or claim 9,
Containing the recycled aggregate and new aggregate,
Flooring characterized by The flooring according to claim 10, wherein
The new aggregate is separable from the waste floor material by burning the waste floor material;
Flooring characterized by The flooring material according to claim 10 or 11,
The new aggregate is crushed to a predetermined particle size;
Flooring characterized by

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