JP5980869B2 - Method for producing concrete molded product and inner mold used in the method - Google Patents

Description

The present invention relates to a method for producing a concrete molded product in which an inner mold having functions such as color, pattern, and corrosion resistance is integrated on the surface of the concrete molded product , and an inner mold used in the method .

  Concrete molded products include road boundary blocks, ground boundary blocks, pavement flats, row of wood timber (planting) blocks, reinforced concrete L-shaped, side grooves, side groove cover plates, concrete concrete for roads, roads, etc. Wastewater such as small and large stack blocks for rivers or rivers, retaining frame blocks such as frame blocks, cross-girder blocks, tension blocks, culverts such as box culverts, manholes, reinforced concrete bench flume, concrete waterways, etc. There are concrete products for sewage and sewerage. These products are manufactured in factories by, for example, a steel mold hinge type or slide type concrete product manufacturing apparatus.

  In the hinge-type molded product manufacturing apparatus, the lower sides of the front, rear, left, and right mold frames are pivotally supported in a hinge-type manner, and each mold is stood and closed, and the mold is filled and cured. The mold is tilted and opened to take out the molded product (see Patent Document 1).

  The slide type molded product manufacturing apparatus slides the front, back, left, and right molds inward, fills the molds with the raw molds in a state where the molds are closed, cures them, and slides the molds outward after curing. The molded product is taken out and opened (see Patent Document 2).

  For example, as shown in FIGS. 1 to 3, the pedestrian boundary block is composed of a standard type 1, a rubbed type 2, and a devaluation type 3, and a sidewalk and a roadway leading to a gas station, a restaurant, a convenience store, a store, etc. At the entrance / exit of the boundary, it is provided so that the traffic of entering and exiting vehicles can be made smooth.

  When a car enters the entrance / exit of the pedestrian block boundary block, the driver cannot distinguish between the cut-off type and the crushed type boundary that are continuous in gray color, and the left rear wheel tire mainly protrudes from the cut-down type and rides on the crushed block Cases are frequent every day, and sometimes a rushed driver turns the steering wheel suddenly, leading to an accident. In addition, when a person crosses a pedestrian crossing when crossing a pedestrian crossing, he / she walks paying attention to traffic lights and pedestrians in front and back, so he / she does not notice the boundary between the crushed form and the crushed form, and is You can see the sight of tumbling and falling.

As a countermeasure against the above, the current example is as follows.
The installation of pedestrian road boundary blocks depends on public works, but it is still a few cases due to voluntary actions by private shops, but yellow, orange, white, etc. so that the rubbing shape in front of the store is easy to see There is a color pedestrian boundary block that is painted with a conspicuous color paint.

  Note that Patent Document 3 discloses a makeup mold that is attached to a concrete casting mold as a decorative mold that can be colored into concrete while preventing color flow due to rainfall during transportation or before casting concrete and color fading after casting. After forming a synthetic resin foam molded body to be applied, a binder having adhesiveness and moisture is applied to this surface, and a cement powder containing a color pigment is dispersed and adhered before the binder layer is dried and solidified. In addition, a method for producing a decorative mold is described in which cement is solidified with moisture held therein to form a colored mortar layer.

  Furthermore, Patent Document 4 discloses that a cement paper obtained by paper-making a mixed slurry containing cement is attached to the inner surface of the mold so that no air bubbles are present on the surface of the concrete molded body. Describes that a cement-containing material is poured into a hydrous fluidized state, and after the material has hardened, the mold and the molded product are separated to produce a cement molded product.

  In addition, since building blocks are used on roads and rivers, the addition of functions with an emphasis on the natural environment is common, and blocks with natural landscape patterns or geometric patterns on the front of the building blocks can be seen. (See FIG. 10).

  In addition, various concrete products such as trough-type information boxes for storing optical communication cables and various concrete products for drainage and sewage are used as appropriate.

JP 2006-21513 A JP 2004-322600 A Japanese Patent Laid-Open No. 9-029727 Japanese Patent Laid-Open No. 3-146111

  The color paint applied to the pedestrian boundary block, which is still a rare example, has been repeatedly peeled off by the impact and rubbing of the vehicle tires against the rubbing and undercut shapes after painting. There was a problem in that the color deteriorated due to deterioration due to automobile exhaust gas contained in the air, and the concrete surface of the block was exposed because the peeling progressed and the traces disappeared.

  The method of applying various patterns on the front of the stacking block is to form a concave and convex pattern to be formed on the block, so it is necessary to prepare a mold with a concave and convex pattern for each pattern. There was a problem that it was not easy to deal with.

  In addition, in the trough type information box for storing optical communication cables, there is a concern that the concrete box may be deteriorated due to the hot spring component ejection when the construction site is laid in the hot spring area. Similarly, various drainage and sewage concrete products buried underground in the area surrounding the hot spring resort have a concern that the hot spring chemical components erupted into the ground will cause these products to deteriorate and become unable to perform their drainage functions. Therefore, in the construction of these products, selection of construction sites that do not generate gas is considered in advance, but it is difficult to identify hot springs and blowout areas, use concrete products that use chemical cement that can withstand chemical components, and construction sites There is a background that has been difficult to deal with, such as by separately filling ready-made concrete around the product.

  In addition, wastewater concrete products are also deteriorated due to sewage containing various components, functioning as long-life products cannot be performed, and blocks are repaired or replaced within a short period of time. Long-life products that can withstand

  The decorative mold described in Patent Document 3 is for the purpose of preventing air bubbles caused by cast-in-place concrete, and includes an outer mold that can be opened and closed, front and rear, left and right, and a core that can be expanded and contracted. In addition, it cannot be used for manufacturing a wide variety of molded products.

  In addition, the method for manufacturing a decorative mold described in Patent Document 4 is for the purpose of preventing air bubbles caused by cast-in-place concrete, and cement paper is attached to the mold, and the shape is a plate shape used for external wall construction. A simple molded product with a veneer plywood that surrounds only the outside, a molded product with a wide variety of shapes, including an outer mold frame that can be opened and closed, front and rear, left and right, and a core that can be scaled up and down. It cannot be used for manufacturing.

There has been a method for producing colored concrete products by mixing colored materials such as pigments with raw materials. In that case, most of the cement used in ready-mixed concrete is ordinary cement. There is a method of manufacturing colored ready-mixed foods by mixing and kneading pigments and the like using white cement because it cannot handle colored ready-made foods.
Most of the concrete products are manufactured by the pouring method, and when ordinary cement is used, temporarily colored products are manufactured. The residue should be clean and free of fine dust so that the white color of the white cement to be used thereafter is retained. In addition, when normal cement is used again in the same silo, the same green plant, etc., it is necessary to clean it in the same way. These operations are extremely troublesome, and a large amount of work time and a series of manufacturing apparatuses such as silos and raw plants are suspended, and concrete products cannot be manufactured. For this reason, when using white cement, it is actually necessary to secure and use raw concrete from the silo that is stored separately from other cement use. It is premised on product manufacturing that can be scaled, has high manufacturing efficiency, and is profitable even if it is made into a dedicated plant.
Typical examples of colored concrete products that use slump-free color raw materials that are currently manufactured from the above conditions include color flat plates, color interlocking, and color hollow blocks that are manufactured by an immediate demolding machine. , Both are limited to small products due to the limit of the production capacity of the immediate removal machine, and are only part of the concrete product as a whole. For this reason, there has been a long-awaited demand for an easy manufacturing method that can color various products without using color ready-to-use, which is troublesome and irrational, in the casting method using ordinary cement, which occupies most of concrete products.

Therefore, the present invention is a method and method for producing a concrete molded product that can add various functions such as color, pattern, hot spring chemical composition and prevention of deterioration due to various sewage to various concrete molded products. An inner formwork to be provided is provided.

The invention of claim 1 of the present application is provided with outer molds that can be opened and closed on the front, rear, left, and right sides, filled in a mold formed with each outer mold closed, and cured, and after curing, the outer molds are cured. In a manufacturing method of a concrete molded product for demolding an open molded concrete molded product, an inner side of the outer mold frame having a shape matching the outer wall shape of the concrete molded product and a shape matching the inner wall shape of the outer mold frame adheres to the upper is open, internally prepared fresh concrete is fillable an inner mold that is a hollow, separated from the outer frame of the inner mold which is prepared at the time of demolding without mold release agent spray A concrete molded product characterized in that it can be fitted in the outer mold frame and installed, and the installed inner mold frame is filled with raw concrete to integrate the inner mold frame on the surface of the concrete molded product. It is a manufacturing method.

The invention according to claim 2 of the present application is a pedestrian boundary block in which the concrete molded product is colored , and the inner molded frame is a colored inner mold frame. It is a manufacturing method.

The invention of claim 3 of the present application is such that the inner mold used in the method for producing a concrete molded article according to claim 1 can be separated from the outer mold without separation agent spraying at the time of demolding. An inner mold frame that is fitted and installed, and has a shape that matches the outer wall shape of the concrete molded product and a shape that matches the inner wall shape of the outer mold frame. In addition, it is an inner mold that can be filled with ready-mixed concrete that has a hollow inside.

  The concrete molded product of the present invention is a light weight having any functionality such as color, pattern, corrosion resistance, etc. on the surface of the core when using the inner wall or core of a conventional steel outer mold that opens and closes. It can be adapted by attaching an inner mold made of easy-to-use materials to the outer mold or core in a separable manner, putting raw concrete into it and hardening it, and manufacturing functional concrete blocks. It is possible to manufacture concrete products with any functionality such as coloring, various patterns, and long life that had no manufacturing technology.

Fig. 4 is a cross-sectional view of a pedestrian road boundary block with JIS5371 recommended specifications. It is a pedestrian crossing part figure of the pedestrian road boundary block of JIS5371 recommendation specification. It is a perspective view of a walkway boundary block rubbing type. It is the schematic of the external formwork of a rubbed form. It is the schematic which shows the state which attached the inner mold frame to the outer frame body. It is a general view of an inner formwork. It is the schematic which shows the state which closed the external formwork of the rubbing type. It is a figure which shows the state which opened the outer formwork and demolded the hardened rubbed form. It is a figure which shows the color rubbed form of completion of manufacture.

  Embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, as a method of coloring the blocks so that the standard form 1, the rubbing form 2 and the depressing form 3 of the pedestrian boundary block shown in FIGS. An example of applying a color to the rubbed shape 2 shown will be described.

  The concrete form factories owned by each concrete product factory are mainly made of steel, as shown in Fig. 4 (generally a multi-piece structure, but here a single-piece structure is shown for the sake of clarity). Is opened, and the outer molds 4 to 7 on the front, rear, left and right can be opened to the outside and closed to the inside to open and close. Using this mechanism, the outer molds 4 to 7 are opened to clean the inner surfaces of the outer molds 4 to 7, and the outer molds 4 to 7 are inspected and confirmed. As shown in FIG. The outer molds 4 to 7 are closed to prepare for placing.

  In the conventional manufacturing method that does not use the inner mold, in the preparation state before the ready-mixed containers are opened with the four outer molds 4 to 7 shown in FIG. In order to prevent and remove the rubbing shape 2 from the outer mold frame smoothly, a release agent is sprayed on the entire inner wall of the outer mold frame, but in the glaze mold manufacturing using the inner mold frame of this embodiment In this case, since the raw container is put into the inner mold and not directly placed on the outer mold, there is no need to spray the release agent because there is no adhesion of the raw container to the outer mold.

  As shown in FIG. 4, the outer molds 4 to 7 have a structure in which the bottom plate of the rubbed shape 2 is located at the upper part, and is a lining type in which the raw kon is placed at the raw kon inlet with the upper part opened. Is common. This is to remove bubbles generated from the curing of the raw concrete from the upper opening and remove the bubbles in the outer mold, so that the block bottom plate located at the upper part of the outer mold from which the bubbles have been discharged is removed. Bubble marks remain after the mold, giving the impression that it looks bad. In order to solve this bad impression, focusing on the fact that the bottom plate portion of the rubbed shape is embedded in the ground in the field construction, the bottom plate portion that is invisible after the construction is used as the bubble discharge portion.

  In the manufacturing of the conventional rubbing type, the raw container is put into the upper opening of the mold prepared in this way. In this embodiment, as shown in FIG. The inner mold frame 8 having a flexible performance, which is made of polyurethane, has a thickness of about 2 mm, and has a hollow inside, is a shape that matches the outer wall shape of the outer mold frames 4 to 7. It fits in and is installed at a predetermined position as shown in FIG.

  Thereafter, after the predetermined position and installation state of the inner mold 8 in the outer mold are reconfirmed, the outer molds 4 to 7 are closed as shown in FIG. Raw kon is thrown in, and vibration is given so that raw kon spreads to every corner with a vibrator.

  The inner mold frame 8 has the shape of the outer wall of the rubbed shape 2 and its surface has a colored color, and matches the inner wall shape of the outer mold frames 4 to 7 to the inner side of the outer mold frame. It is used as a substitute for formwork. That is, since the inner mold 8 is in close contact with the inside of the outer molds 4 to 7 against the pressure, gravity, and vibration from the vibrator, the outer mold has a protective function against such pressure, gravity, and vibration. By fulfilling the above, damage to the inner mold can be prevented. Since the inner mold 8 matches the inner wall shape of the outer molds 4 to 7, the inner mold 8 is intimately integrated with the outer mold to be stably maintained, and the predetermined position of the inner mold in the mold against vibration caused by a vibrator is maintained. It can be prevented from shifting.

  When the ready-mixing is finished, in order to stabilize the ready-conversion hardening, the outer mold filled with the ready-mixed food is moved to the curing room, and steam curing is performed at a predetermined temperature. Depending on the season and location conditions of each factory, there is a period when natural curing at normal temperature is possible and a period when steam curing is enforced as in the winter, both of which have thorough quality control in the concrete factory. During this time, the ready-mix continues to be cured, and as the ready-contains are cured, the inner mold is integrated with the ready-mixed and cured, resulting in a colored rubbed shape with a colored surface.

  After the ready-conversion curing, as shown in FIG. 8, so-called demolding is performed, in which the outer mold is opened and the color rubbed shape 9 is removed. The mold can be removed from the top by vacuum, or immediately after the raw control is put in, a wire is attached to two places on the bottom plate of the rubbed shape and cured in a ring shape. Attach and pull up to remove the mold. Decolored and completed color rubbed shape 9 shown in FIG. 9 is in stock and continues curing curing thereafter.

  The used outer formwork is cleaned for the next ready-to-container placement, but due to the manufacturing method using the inner formwork, the ready-made container does not directly contact the outer formwork, so there is no ready-to-use The troublesome work of removing deposits with metal tools is eliminated, so cleaning work is reduced and damage to the formwork is reduced, which is expected to lead to cleaner and eco-friendly factories. The In this way, it is possible to easily manufacture a color rubbed shape.

  Next, the inner mold will be described. The inner mold can be of any color, any thickness, and any shape, and can be separably attached to the inside or core surface of a conventional outer mold to flexibly adapt to complex shapes, pinholes It has a waterproof / corrosion-proof function that does not allow any raw concrete to pass through, has strength that can withstand the pressure input of raw concrete, and has chemical resistance such as water / corrosion resistance, acid / alkaline resistance, and steam curing used for curing raw concrete. Capable of withstanding the normal 60 ° C duration of heat, flexible and strong at low to high temperatures, less susceptible to the seasons and climate, fully following the swinging and shifting of concrete products during earthquakes, and anti-corrosion function For example, a solid without an organic volatile substance even after curing.

  In addition, after being mounted on the road, the vehicle tires can withstand repeated bumps, rubbing, and riding, and they do not peel off, they are excellent in UV resistance, and light resistance that does not deteriorate the block surface color. And so on.

  Specific materials are selected as appropriate depending on the application and installation location of the product in which the inner form is used. Special fibers and special cement are integrated, and a net and tape are attached to the back side, made of synthetic resin. A board, a fiber reinforced plastic board, etc. are mentioned. In both cases, the inner mold is a lightweight plate with a standard thickness of 2 mm corresponding to the application, and it will not crack or crush even if it falls during handling.

  The inner mold is lightweight and does not crack or crush even if dropped, so it is easy and safe to handle by human power. It is optional to place it vertically or horizontally because of its robustness and flexible flexibility. Because the work of fitting the inner mold into the inner wall of the outer mold matches the shape of the inner wall of the outer mold, and the work of fitting into the core surface also matches the shape of the core surface, the inner mold It can be easily attached with flexible flexibility.

  In the rubbed type, the ready-mixed concrete is thrown into the inner mold and is not directly placed on the outer mold. There is no special preparation such as spraying the mold release agent for placing, so the series work is reduced and the damage to the mold is reduced, so that the durability of the mold is improved and the factory is also cleaned and eco-friendly. It leads to.

  In addition to using the color inner mold as an inner mold for the production of a color rubbed type, the entire outer periphery of the collar is enlarged by the thickness of the inner mold, and the conventional colorless rubbed shape that has been manufactured or existing It can also be attached to the rubbed shape as a retrofit for a retrofit color rub block. In order to fix the inner mold frame tightly on the outer periphery of these rubbed shapes by post-installation, it is possible to use a fixing tool such as a bolt or an adhesive.

1: Standard type 2: Gripping type 3: Depressed type 4: Outer side frame on the side 5: Outer side frame on the side 6: Outer side frame on the end 7: Outer side frame on the end 8: Inner frame on the collar 9: Color Rubbed

Claims (3)

Concrete molding formed by opening and closing the outer molds, with the outer molds open and closed, left and right, left and right, filling the molds in a mold formed with each outer mold closed, and curing In a method for producing a concrete molded product for demolding a product,
Can be filled with raw concrete that has a shape that matches the outer wall shape of the concrete molded product and that matches the inner wall shape of the outer mold frame, adheres to the inside of the outer mold frame, opens at the top, and is hollow inside the inner mold was prepared such, installed by fitting the inner die frame prepared Some from the outer frame when demolding of the release agent spray without separably said outer frame, the installation and the inner mold was A method for producing a concrete molded product, comprising filling the frame with raw concrete and integrating the inner mold frame on the surface of the concrete molded product.   The method for producing a concrete molded product according to claim 1, wherein the concrete molded product is a colored pedestrian road boundary block, and the inner mold is a colored inner mold. The inner mold used in the method for producing a concrete molded article according to claim 1 , wherein the inner mold is fitted into the outer mold so as to be separable from the outer mold without spraying a release agent at the time of demolding. A frame that conforms to the shape of the outer wall of the concrete molded product and that conforms to the shape of the inner wall of the outer mold frame, and is in close contact with the inside of the outer mold frame; inner mold fresh concrete that can fill you are.

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