JP5399945B2 - Method for producing sulfur solidified panel, sulfur solidified panel and method for attaching sulfur solidified panel - Google Patents

Description

  The present invention relates to a method for manufacturing a sulfur solidified body panel, a method for manufacturing a sulfur solidified body panel using a molten sulfur-containing material, a sulfur solidified body panel, and a method for attaching the sulfur solidified body panel.

  In general, concrete in which aggregates are bonded with cement is used as a material for civil engineering and construction. Among them, flat panels used for buried formwork and post-bonded panels are often made of mortar. However, the panel made of mortar is not so high in strength, and the strength and durability may be insufficient depending on the use environment. Further, in many of the panels made of mortar, reinforcing bars and other reinforcing materials are used to improve the strength and durability, and the thickness and weight of the product are increased. Under such circumstances, a thin plate-like panel having high strength and durability is desired as a material for civil engineering and construction.

  On the other hand, in recent years, paying attention to the property of sulfur that is solid at normal temperature and melts when heated to about 119 ° C to 159 ° C, a predetermined sample is blended with sulfur, and civil engineering and construction materials Attempts have been made to use it as one. Such a sulfur-containing material using sulfur is known as a material having high strength, excellent water barrier properties, and high acid resistance compared to ordinary concrete using cement. And since a sulfur containing material is apparently similar in finish and handling to normal concrete, the solidified material is sometimes referred to as sulfur concrete or sulfur solidified material (see, for example, Patent Document 1).

  Here, since sulfur has an ignitability and is handled as a so-called dangerous substance, it is difficult to melt and place it on site. In order to improve such a situation, it has been attempted to produce a modified sulfur by mixing a sulfur modifier as an additive with molten sulfur to modify the sulfur. Also, the modified sulfur and fine powder are mixed to produce a molten modified sulfur intermediate material, and the modified sulfur intermediate material and aggregate are mixed and solidified to form modified sulfur. Attempts have been made to produce solidified bodies (see, for example, Patent Document 2).

  A mold having a predetermined shape is used to cool and solidify the molten sulfur-containing material (including the modified sulfur intermediate material) as described above to form a sulfur solidified body (including the modified sulfur solidified body). The sulfur-containing material was poured into the frame and cooled and solidified.

Japanese Patent Laid-Open No. 2004-160693 JP 2005-82475 A

  By the way, the sulfur-containing material in the molten state as described above starts to solidify when it falls below the solidification temperature of sulfur (about 119 ° C.). Here, if the molten sulfur-containing material is poured as it is into the mold at room temperature, the sulfur-containing material filled in the mold is rapidly cooled, so the sulfur-containing material in the mold during the solidification process Contracted and a void was formed in the upper part or inside of the sulfur solidified body (specifically, the sulfur solidified body panel), the upper surface was depressed, or bubbles were likely to be generated on the surface. For this reason, it cannot be said that the finish of the sulfur solidified body (sulfur solidified panel) is good, and it has been desired to improve the finish. Moreover, when the said cavity is large, it was difficult to repair this.

  Then, this invention addresses such a problem, and it aims at providing the manufacturing method of the sulfur solidified body panel which can manufacture the sulfur solidified panel with favorable finishing as a product. Moreover, it aims at providing the attachment method to the concrete structure of the sulfur solidified body panel which can be attached to various concrete structures, and this sulfur solidified body panel.

According to one aspect of the present invention, a method for producing a sulfur-solidified panel using a sulfur-containing material includes a preheating step of heating a box-shaped mold having an upper surface opened to a temperature of about the melting point of sulfur, and a mold after heating. From the casting step of filling the molten sulfur-containing material in the frame, the slow cooling step of naturally cooling the mold filled with the sulfur-containing material in the air and gradually cooling, and the mold after natural cooling A demolding step of taking out the panel-like product molded in the mold, and a curing step of curing the panel-like product taken out of the mold while keeping warm .

  According to another aspect of the present invention, the sulfur-solidified panel formed into a thin plate shape using the sulfur-containing material and attached to the surface of the concrete structure has at least one stepped penetration penetrating from the panel surface to the panel back surface. A hole is formed, and the stepped through hole includes a counterbore portion formed on the panel surface side, a through hole having a diameter smaller than the counterbore diameter of the counterbore portion and communicating with the counterbore portion. Including.

  According to still another aspect of the present invention, there is provided a sulfur solidified body panel formed into a thin plate shape using a sulfur-containing material, and a counterbore portion formed on the panel surface side, and communicated with the counterbore portion. A sulfur solidified body panel mounting method for attaching a sulfur solidified body panel having at least one stepped through hole including a through hole having a smaller diameter than the spot facing portion to a concrete structure is (a 1) a first step of forming an anchor hole in the concrete structure, and installing an anchor bolt in the formed anchor hole; and (b) inserting the anchor bolt into the stepped through-hole to form the sulfur solidified body. A second step of adhering the panel back surface of the panel to the surface of the concrete structure using an acid-resistant adhesive; and (c) the outer diameter of the panel is smaller than the diameter of the counterbore part and the small diameter penetration A countersunk nut with a height smaller than the depth of the counterbore part is attached to the head side of the anchor bolt, and the countersunk solid panel is tightened by tightening the countersunk nut. A third step of fixing to the surface of the concrete structure; (d) a fourth step of cutting a portion of the anchor bolt protruding from the countersunk nut; and (e) the acid resistance in the counterbore portion. A fifth step of covering the cut surface of the anchor bolt and the countersunk with the adhesive, and leveling the panel surface of the sulfur-solidified panel by leveling the filled adhesive. Including.

  According to still another aspect of the present invention, there is provided a sulfur solidified body panel formed into a thin plate shape using a sulfur-containing material, and a counterbore portion formed on the panel surface side, and communicated with the counterbore portion. A sulfur solidified body panel mounting method for attaching a sulfur solidified body panel having at least one stepped through hole including a through hole having a smaller diameter than the spot facing portion to a concrete structure is (a A first step of forming an anchor hole in the concrete structure and driving a female screw anchor into the formed anchor hole; and (b) the sulfur solidification while making the stepped through hole correspond to the female screw anchor. A second step of attaching the panel back surface of the body panel to the surface of the concrete structure with an acid-resistant adhesive; and (c) the outer diameter of the head is smaller than the diameter of the counterbore and the small diameter. Penetrating A low head bolt that is larger than the diameter of the hole and whose head height is smaller than the depth of the counterbore part is inserted into the stepped through hole of the sulfur solidified body panel and fastened to the female screw anchor. A third step of fixing the sulfur solidified body panel to the surface of the concrete structure, and (d) filling the countersunk portion with the acid-resistant adhesive and attaching the head of the low head bolt And a fourth step of leveling the filled adhesive to level the panel surface of the sulfur solidified body panel.

  According to still another aspect of the present invention, there is provided a sulfur solidified body panel formed into a thin plate shape using a sulfur-containing material, and a counterbore portion formed on the panel surface side, and communicated with the counterbore portion. A sulfur solidified body panel mounting method for attaching a sulfur solidified body panel having at least one stepped through hole including a through hole having a smaller diameter than the spot facing portion to a concrete structure is (a A first step of forming an anchor hole in the surface of the concrete structure, driving a female thread anchor into the formed anchor hole, and attaching a sizing bolt to the female thread anchor; and (b) the stepped through hole. A second step of attaching the panel back surface of the sulfur solidified body panel to the surface of the concrete structure with an acid-resistant adhesive; and (c) the dimensioning bolt. A third step of removing, and (d) the outer diameter of the head is smaller than the diameter of the counterbore and larger than the diameter of the small through hole, and the height of the head is the sulfur solidified. A low head bolt smaller than the depth of the counterbore part of the body panel is inserted into the stepped through hole and fastened to the female thread anchor to fix the sulfur solidified panel to the surface of the concrete structure. And (e) filling the counterbore part with the acid-resistant adhesive to cover the head of the low head bolt, and leveling the filled adhesive to make the panel of the sulfur solidified body panel. And a fifth step of flattening the surface.

  According to the manufacturing method of the said sulfur solidified body panel, the sulfur solidified body panel with the favorable finish as a product can be manufactured. Moreover, since the sulfur-containing material has high strength, a thin plate-like panel having high strength and durability can be manufactured without using a reinforcing material such as a reinforcing bar.

  According to the sulfur solidified body panel, for example, an anchor bolt is installed in an existing concrete structure, and the anchor bolt and nut can be used to firmly fix the concrete structure to the surface of the concrete structure. Moreover, since the said nut can be accommodated in a counterbore part, the part which protrudes from a panel surface (for example, waterway surface) can be eliminated by cut | disconnecting and removing the part which protruded from the said nut among the said anchor bolts. Thereby, it becomes possible to attach to various concrete structures including a water channel having a low required roughness coefficient, and the application range of the sulfur solidified body panel as an anticorrosion coating material can be expanded.

  According to the method for mounting the sulfur solidified body panel, the sulfur solidified body panel can be firmly fixed to the surface of an existing concrete structure and the surface of the fixed sulfur solidified body panel can be flattened. it can. Thereby, a sulfur solidification body panel can be attached to various concrete structures including a water channel etc. with which the required roughness coefficient is low, and anticorrosion coating can be given. In addition, since the adhesion of dirt and dust can be suppressed, maintenance can be unnecessary or greatly reduced.

It is a schematic diagram which shows an example of the manufacturing line for enforcing the manufacturing method of the sulfur solidified body panel by this invention. It is a top view which shows the formwork used with the manufacturing method of the said sulfur solidified body panel. It is a bottom view of the said formwork. It is a front view of the said formwork. It is a side view of the said formwork. It is the A section enlarged view of FIG. It is a BB cross-sectional enlarged view of FIG. It is a perspective view which shows the formwork heater used with the manufacturing method of the said sulfur solidified body panel, and its use condition. It is a perspective view which shows the said mold heater and its use condition. It is a perspective view which shows the said mold heater and its use condition. It is a perspective view which shows the state which fills the molten sulfur containing material (1st layer) in the said formwork. It is a perspective view which shows the state which installs the reinforcement net | network on the said sulfur containing material (the 1st layer) with which it filled. It is a perspective view which shows the state which fills the molten sulfur containing material (2nd layer) on the said reinforcement net | network. It is a perspective view which shows the state which slowly cools the said mold form with which the said sulfur containing material was filled by natural cooling in the air. It is a perspective view which shows the state which peels the panel-shaped object shape | molded in this mold from the said mold after natural cooling. It is a perspective view which shows the state which takes out the panel-shaped object shape | molded in this mold from the said mold after natural cooling. It is a perspective view which shows the state which cures (heated secondary curing), keeping the panel-shaped thing taken out from the said mold form warm on a curing bed. It is a perspective view which shows the state which vertically arranges the some panel-shaped thing taken out from the said mold form so that panel surfaces may closely_contact | adhere, and it cools naturally. It is a perspective view which shows the sulfur solidified body panel manufactured by the manufacturing method of the sulfur solidified body panel by this invention. It is a top view of the improved formwork. It is CC sectional enlarged view of FIG. 19A. It is a top view of the sulfur solidified body panel manufactured using the said improved formwork. It is DD sectional enlarged view of FIG. 20A. It is a figure for demonstrating 1st Embodiment of the attachment method of a sulfur solidified body panel. It is a figure for demonstrating 1st Embodiment of the attachment method of a sulfur solidified body panel. It is a figure for demonstrating 1st Embodiment of the attachment method of a sulfur solidified body panel. It is a figure for demonstrating 1st Embodiment of the attachment method of a sulfur solidified body panel. It is a figure for demonstrating 2nd Embodiment of the attachment method of a sulfur solidified body panel. It is a figure for demonstrating 2nd Embodiment of the attachment method of a sulfur solidified body panel. It is a figure for demonstrating 2nd Embodiment of the attachment method of a sulfur solidified body panel. It is a figure for demonstrating 2nd Embodiment of the attachment method of a sulfur solidified body panel.

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
FIG. 1 is a schematic diagram showing a production line for carrying out a method for producing a sulfur solidified panel according to the present invention. The manufacturing method of the sulfur solidified body panel in this embodiment manufactures a sheet-like sulfur solidified body panel by molding and solidifying the molten sulfur-containing material using a box-shaped form having an upper surface opened. In the production line shown in FIG. 1, a preheating step for preheating the mold, a placing step for filling the molten sulfur-containing material in the heated mold, and a sulfur-containing material were filled. It includes a slow cooling step for slowly cooling the mold, a demolding step for removing the panel-like material from the mold, and a curing step for curing the removed panel-like material.

In the preheating step, the mold is heated to a temperature of about the melting point of sulfur (119 ° C.). In FIG. 1, the mold 2 is inserted into the mold heater 1 and heated. . Here, the mold 2 is made of a metal such as iron, and is formed in a flat box shape having an open upper surface, as shown in FIGS.
FIG. 2 is a plan view of the mold 2. As shown in FIG. 2, the mold frame 2 includes, for example, a rectangular bottom plate 3 and a frame member 4 provided around the bottom plate 3 and having a predetermined height. The bottom plate 3 and the four frame members 4 Thus, it is formed in a flat box shape having an upper surface opened and a small height dimension with respect to the bottom area. In the present embodiment, the dimension of the mold 2 is, for example, 400 mm (vertical) × 800 mm (horizontal) × 12 mm (height). However, the dimension of the mold 2 can be appropriately set according to the specifications of the sulfur solidified body panel. For example, the height dimension (thickness of the sulfur solidified body panel) may be increased to about 40 to 50 mm.

  In FIG. 2, reference numeral 5 denotes a pin provided in the bottom plate 3 to form a hole opened in a flat portion of the sulfur solidified body panel as a product, that is, a through hole extending in the thickness direction of the sulfur solidified body panel. Reference numeral 6 denotes a handle used when the mold 2 is transported. FIG. 3 is a bottom view of the mold 2. As shown in FIG. 3, a bottom frame member 7 having an L-shaped cross section having a predetermined height is provided around the back surface of the bottom plate 3, and the mold frame 2 is formed at four locations in the center of the back surface of the bottom plate 3. An engaging portion 8 is provided that engages with a convex portion or the like provided on the upper surface of the work table when it is placed on a work table to be described later, and prevents displacement of the mold 2. 4 is a front view of the mold 2, and FIG. 5 is a side view of the mold 2.

  As shown in FIGS. 2 and 3, two bases 9 for injecting pressurized air are attached to one of the frame members 4. This base 9 is for injecting pressurized air into the boundary portion between the panel-like object and the mold 2 when taking out the panel-like object molded in the mold 2 from the mold 2. As shown in FIG. 6B, the bottom plate 3 communicates with an air injection hole 10 formed at the boundary between the frame member 4 and the bottom plate 3 on the surface. By injecting pressurized air from the base 9 into the mold 2 through the air injection hole 10, the panel-like material molded in the mold 2 can be peeled off and easily taken out from the mold 2. . Here, as shown in FIG. 6B, the inner peripheral edge of the frame member 4 in contact with the surface of the bottom plate 3 is an inwardly inclined surface. Thereby, as for the panel-shaped object shape | molded within the mold 2, the peripheral part of one flat surface (panel surface) is formed in a chamfering shape.

  And in the preheating process, the mold heater 2 (made of metal such as iron) formed in the shape of a vertical storage box as shown in FIG. The upper lid 12 is moved to the opening 11 by holding the holding portion 13 of the upper lid 12 shown in FIG. 8, and the upper lid 12 is put on the opening 11 as shown in FIG. The upper bolt 12 is fixed by tightening the surrounding bolts 14, and then the mold heater 1 is operated to heat the mold 2 to a temperature around the melting point of sulfur (119 ° C.). After completion of preheating, in FIG. 9, the bolts 14 are loosened to remove the upper lid 12, and the mold 2 inserted into the mold heater 1 is taken out with the handle 6 and sent to the subsequent process.

  In the example shown in FIGS. 7 to 9, the heat source of the mold heater 1 is steam, the reference numeral 15 indicates a steam injection pipe, the reference numeral 16 indicates a steam discharge pipe, and the reference numeral 17 indicates the pressure of the injection steam. A pressure meter to be measured is shown. Moreover, in FIG. 1, the code | symbols 18 and 19 have shown the piping which supplies a vapor | steam to the some form heater 1 from the boiler chamber which is not illustrated. Then, as shown in FIGS. 7 to 9, the mold 2 is inserted into the mold heater 1 and, for example, steam pressurized to 1.5 to 2 atm is injected for 4 to 5 minutes. 2 is heated to about 120-130 degreeC.

  However, the heat source of the mold heater 1 is not limited to steam, and may be an electric heater. Furthermore, you may use heat sources other than a vapor | steam and an electric heater.

  Next, in the casting process, the mold 2 heated in the preheating process is charged within a set temperature range equal to or higher than the melting point of sulfur and filled with a sulfur-containing material in a molten state. The mold 2 after completion of preheating is taken out from the mold heater 1 and placed on the upper surface of the work table 20 to fill the mold 2 with a molten sulfur-containing material. Specifically, as shown in FIG. 10, the mold 2 is placed horizontally on the work table 20, and the molten sulfur-containing material 22 accommodated in the container 21 is placed on the entire surface within the mold 2. It fills so that it may spread, and the sulfur content material 22 (22a) of the 1st layer is cast. At this time, the molten sulfur-containing material 22 may be filled while vibrating the work table 20 to vibrate the mold 2. If it does in this way, it will become difficult to make a cavity inside filled sulfur content material 22.

  Note that a release material may be applied to the inner surface of the mold 2 before filling the mold 2 with the sulfur-containing material 22. If it does in this way, the panel-like thing shape | molded in the mold 2 can be taken out from this mold 2 easily. Moreover, it is preferable to improve the air passage of the base 9 for injecting pressurized air and the air injection hole 10.

  Here, the sulfur-containing material 22 will be described. The sulfur-containing material is solid at room temperature and uses the property of sulfur that it melts at approximately 119 to 159 ° C., and is heated to melt within a set temperature range of 119 ° C. It is a so-called “sulfur solidified body” produced by mixing gravel and the like, kneading while maintaining approximately 119 to 159 ° C., and cooling and curing the mixture. Alternatively, sulfur that is heated and melted in the same manner and a sulfur modifier that modifies the molten sulfur are mixed to produce modified sulfur, and sand, gravel, coal ash, or the like is mixed with the modified sulfur. In the same manner as described above, the mixture is kneaded while being heated, and is called a “modified sulfur solidified body” produced by cooling and curing it. That is, the sulfur-containing material includes the sulfur solidified body and the modified sulfur solidified body. In addition, even when the term “sulfur solidified product” is simply used, the notation includes “modified sulfur solidified product”.

  The modified sulfur solidified body will be described in more detail. The modified sulfur solidified body is produced using sulfur, sulfur modifier, fine powder, and aggregate as raw materials. First, molten sulfur and a sulfur modifier are mixed to produce modified sulfur. Sulfur is normal elemental sulfur, for example, sulfur produced naturally or by desulfurization of petroleum or natural gas. The sulfur modifier is modified, for example, by polymerizing sulfur. The sulfur modifier may be any compound capable of polymerizing sulfur, for example, an olefinic hydrocarbon or diolefinic hydrocarbon having 4 to 20 carbon atoms, specifically, cyclic olefinic carbonization such as limonene and pinene. Aromatic hydrocarbons such as hydrogen, styrene, vinyltoluene, methylstyrene, dicyclopentadiene (DCPD) and its oligomers, cyclopentadiene, tetrahydroindene (THI), vinylcyclohexene, vinylnorbornene, ethylidenenorbornene, cyclooctadiene, etc. And a mixture with one or more of diene hydrocarbons. Mixing of sulfur and the sulfur modifier is performed in a state where sulfur is melted, that is, at a temperature of 119 to 159 ° C, preferably 130 to 150 ° C.

  The modified sulfur can be obtained by melt-mixing sulfur and a sulfur modifier, and the use ratio of the sulfur modifier at this time is usually based on the total amount of sulfur and sulfur modifier. It is 0.1-30 mass%, Preferably it is 1.0-20 mass%. The obtained modified sulfur is mixed with fine powder heated to a predetermined temperature (for example, 150 ° C.) to obtain a modified sulfur intermediate material. As the fine powder, one or more of coal ash, silica sand, silica fume, glass powder, fuel incineration ash, electrostatic dust collection ash, and shell pulverized material may be selected.

  The modified sulfur intermediate material obtained as described above is an aggregate heated to, for example, about 130 to 140 ° C. while being maintained at a temperature (for example, 130 to 140 ° C.) where the molten state can be maintained. Mixed with. The aggregate is not particularly limited as long as it can be used as an aggregate, and an aggregate generally used in concrete can be used. Examples of such aggregates include natural stone, sand, rubble, dredged sand, steel slag, ferronickel slag, copper slag, by-products generated during metal production, molten slag, shells, and mixtures thereof. 1 type (s) or 2 or more types selected from a group are mentioned. The modified sulfur material is produced by mixing the modified sulfur intermediate material and the aggregate using, for example, a kneading apparatus, and the modified sulfur solidified body is produced by cooling and solidifying the material. Such a modified sulfur solidified body can be produced using, for example, a modified sulfur solidified body production system described in Japanese Patent No. 4007997.

  In the present embodiment, the sulfur solidified body or the modified sulfur solidified body heated in a set temperature range (for example, about 130 to 150 ° C.) to be in a molten state is used as the molten sulfur-containing material 22. . For example, in FIG. 1, the plant 23 is a modified sulfur solidified body manufacturing system described in Japanese Patent No. 4007997, and the modified sulfur solidified body manufactured in the plant 23 is heated to melt a sulfur-containing material in a molten state. The molten sulfur-containing material 22 is divided into the container 21 while being heated and mixed by, for example, the first to fourth mixers 24, and the molten sulfur-containing material 22 is discharged from the container 21 as shown in FIG. In the mold 2 so as to spread over the entire surface.

  Returning to the description of the placing process, in the next stage of the placing process, as shown in FIG. 11, a reinforcing net 25 is installed on the first sulfur-containing material 22a placed as described above. . The reinforcing net 25 reinforces the strength of the sulfur solidified body panel formed in a thin plate shape, and for example, a reinforcing fiber net can be used. Specifically, a mesh-like carbon fiber in which flat carbon fibers are arranged in a cross shape and the intersections are glued may be used.

  In a further next stage of the placing process, as shown in FIG. 12, after the reinforcing net 25 is installed on the first-layer sulfur-containing material 22a as described above, two more are provided on the reinforcing net 25. The sulfur-containing material 22b of the layer is placed. That is, the reinforcing net 25 is installed within the entire thickness of the molten sulfur-containing material 22 filled in the mold 2, and the upper layer and the lower layer (22 a and 22 b) sandwiching the reinforcing net 25. Is filled with a sulfur-containing material 22. Thereby, it is set as the three-layer structure of the sulfur content material 22a of the 1st layer (lower layer), the reinforcement net | network 25 on it, and the 2nd layer (upper layer) sulfur content material 22b on it, and a sulfur solidified body panel As the strength is improved. The excess sulfur-containing material 22 that protrudes on the frame member 4 around the mold 2 is removed with a trowel or the like and flattened. Similarly to the first layer (lower layer), the second layer (upper layer) may be filled with the molten sulfur-containing material 22 while vibrating the work table 20 to vibrate the mold 2.

  Here, although the molten sulfur-containing material 22 is filled in the mold 2 in two steps, the present invention is not limited to this. For example, the reinforcing net 25 may be disposed in the mold 2 in advance so that the molten sulfur-containing material 22 is filled into the mold 2 at once, or the molten sulfur-containing material 22 is filled with the mold. The reinforcing net 25 may be buried in the sulfur-containing material 22 immediately after filling in the inside 2. Furthermore, when the strength of the produced sulfur solidified panel is sufficient per se, the reinforcing net 25 can be omitted.

  Next, in the slow cooling step, the mold 2 filled (placed) with the sulfur-containing material 22 is gradually cooled in the air by natural cooling. In FIG. The mold 2 filled with 22 is carried to the start position of the transfer facility 26, and the mold 2 is gradually cooled while the transfer facility 26 moves the mold 2 from the start position to the end position. That is, as shown in FIG. 13, the mold 2 filled with the sulfur-containing material 22 is placed on a roller conveyor as the transport facility 26 and moves to the end position while being cooled in the air. Specifically, the mold 2 filled with the sulfur-containing material 22 moves from the start position to the end position in about 30 minutes, and is cooled to 35 to 50 ° C. during this movement.

  Next, the demolding step is to take out the panel-like product molded in the mold 2 from the mold 2 after natural cooling. In FIG. The mold 2 that has been moved to the end position is reversed and placed on the mold removal work table 27 so that the back surface faces up, and a panel-like object is taken out from the mold 2 on the mold removal work table 27. Here, pressurized air is injected into the boundary portion between the panel-like product molded in the mold 2 and the mold 2, and the panel-like product is peeled off from the mold 2 and taken out. That is, as shown in FIG. 14, the mold 2 after natural cooling is placed on the mold removal work table 27 with the frame member 4 side down, and an air tube 28 is connected to the base 9 to supply pressurized air. inject. As shown in FIGS. 6A and 6B, the base 9 communicates with the air injection hole 10 formed in the boundary portion between the frame member 4 and the bottom plate 3 on the surface of the bottom plate 3 of the mold 2. By injecting pressurized air from the tube 28, as shown in FIG. 15, the panel-like material 29 molded in the mold 2 can be peeled off and taken out from the mold 2.

  In this embodiment, as shown in FIGS. 6A and 6B, the air injection hole 10 communicates with the inner peripheral edge of the frame member 4 that is an inwardly inclined surface in contact with the surface of the bottom plate 3. Air is blown to the peripheral edge formed in the chamfered shape of the panel-like object 29. Thereby, the panel-like object 29 can be easily detached from the mold 2. Note that the air injection hole 10 is not limited to the one shown in FIGS. 6A and 6B, and may be provided in a direction perpendicular to the bottom plate 3 on the back surface side of the bottom plate 3, for example. Further, it is not always necessary to inject pressurized air. For example, the panel-like object 29 may be taken out from the mold 2 by hitting the back side of the mold 2 with a mallet or the like.

  When the panel-like object 29 is taken out from the mold 2 as described above, the taken-out panel-like object 29 is placed on the deburring work table 30 as shown in FIG. 1, and the panel-like object 29 is used using a grinder or the like. Deburr around the area.

Then, curing process, the panel-like material 29 that has been removed from the mold 2 is intended to nourishing production in air, in Figure 1, the panel-like material 29 that has been removed from the mold 2 to the curing location 31 The product is moved (product movement) and placed on the upper surface of the curing place 31 to cure the panel-like material 29. Here, as shown in FIG. 16, the panel-like object 29 taken out from the mold 2 is placed flat on the upper surface of the heated curing bed 32 one by one (lined up flatly). Curing while keeping warm (heating secondary curing). The curing bed 32 is formed between the lower plate 33 and the upper plate 34 by, for example, connecting the lower plate 33 and the upper plate 34 with a I-shaped material 35 arranged at a predetermined interval therebetween to form a pallet shape. By injecting steam into the space, the upper plate 34, that is, the upper surface of the curing bed 32 is heated to, for example, about 20 to 40 ° C.

  Thus, avoiding placing the panel-like object 29 on a cold plane, the panel-like objects 29 are placed flat on the upper surface of the curing bed 32 heated to about 20 to 40 ° C. one by one and about 12 to 24. By performing the time curing, it is possible to prevent the panel-like object 29 from being warped. Further, even if the panel-like object 29 taken out from the mold 2 has a warp, the warp can be corrected by the temperature of the heated curing bed 32. At this time, it is preferable that the panel-like object 29 is placed with the peripheral surface formed in a chamfered shape facing the upper surface of the curing bed 32.

  After performing such heat secondary curing for about 12 to 24 hours, in the production line shown in FIG. 1, the panel-like objects 29 are placed on the inspection table 36 one by one and using a limit gauge or the like. The finished dimensions and warpage of the panel-like object 29 are measured, and product inspection of the panel-like object 29 is performed. If there is a defective product as a result of the product inspection, the panel-like object 29 is heated to correct the warp if the warp can be corrected. Items that cannot be corrected are rejected as defective products.

  Here, apart from the heating secondary curing using the curing bed 32, as another curing process, a plurality of panel-like objects 29 taken out from the mold 2 are placed on the upper surface of the curing place 31, and the panel surfaces May be placed vertically so that they are in close contact with each other and then naturally cooled and cured. Preferably, the plurality of panel-like objects 29 are placed vertically with their front and back surfaces in close contact with each other. For example, as shown in FIG. 17, two square members 37 are arranged in parallel to a horizontal plane, and a flat plate member 38 is vertically arranged at one end thereof to constitute a panel stand. The panel-like object 29 is vertically placed in order from the flat member 38 side. Thereby, the panel-like object 29 is naturally cooled in a state in which the panel surfaces are in close contact with each other (preferably in a state in which the front and back surfaces are in close contact with each other), and the panel-like object 29 is cured. Thereby, even if the panel-like object 29 taken out from the mold 2 is warped, the panel surfaces (preferably, the front surfaces and the back surfaces) of the plurality of panel-like objects 29 with remaining heat are in close contact with each other. The warp can be corrected by placing it vertically. In FIG. 17, reference numeral 39 denotes a toppling prevention material for preventing the plurality of panel-like objects 29 placed vertically on the panel stand from toppling over.

  By performing the above preheating process, casting process, slow cooling process, demolding process, and curing process, a sulfur solidified body panel 40 as shown in FIG. 18 can be manufactured. Specifically, for example, the sulfur solidified panel 40 having a size of 400 mm (length) × 800 mm (width) × 12 mm (thickness) and a weight of about 8.5 kg is manufactured. In addition, it is possible to manufacture the sulfur solidified body panel 40 of arbitrary magnitude | sizes by adjusting the size of the formwork 2 (frame member 4). For example, the thickness of the sulfur solidified body panel 40 can be increased to about 40 to 50 mm by increasing the depth of the mold 2 (height of the frame member 4). Here, in FIG. 18, the code | symbol 43 has shown the through-hole formed with the pin 5 (refer FIG. 2) provided in the baseplate 3, ie, the inner bottom face of the formwork 2. In FIG. Moreover, in FIG. 1, the code | symbol 41 shows the wrap winding stand which wraps the manufactured sulfur solidified body panel 40 as a set of 2 sheets with a packaging material, for example, 42 is a sulfur solidified body panel wrapped with the said packaging material. The packing position where 40 is packed is shown.

  The sulfur solidified body panel 40 manufactured in this way can be widely used as a material for civil engineering and construction. For example, it can be used as a corrosion-resistant material for sewer facilities. Moreover, it can affix on the surface of existing concrete structures, such as a waterway installation, and can utilize as an anti-corrosion coating material for applying an anti-corrosion coating to this concrete structure. Here, the surface on the side where the peripheral edge portion of the sulfur solidified body panel 40 is chamfered, that is, the surface on the inner bottom surface side of the mold 2 is defined as the panel surface.

  According to the method for producing a sulfur solidified body panel described above, the mold 2 is preheated to a temperature around the melting point of sulfur, and the molten sulfur-containing material 22 is filled in the heated mold 2. The sulfur-containing material 22 filled in the frame 2 is not rapidly cooled and solidified, and a void is formed in the upper part or inside of the produced sulfur solidified body panel 40, the upper surface is depressed, or bubbles are formed on the surface. Can be suppressed. Thereby, the sulfur solidified body panel with the favorable finish as a product can be manufactured. Moreover, since the sulfur-containing material has high strength, it is also possible to manufacture a panel without using reinforcing materials such as reinforcing bars, and the thickness of the panel is reduced compared to conventional panels such as mortar panels. It can also be reduced in weight. That is, a thin plate-like panel having high strength and durability can be manufactured.

  In the preheating step, the mold 2 is inserted into the mold heater 1 having a heat source as steam or an electric heater to heat the mold 2, so that the entire mold 2 is heated to a temperature about the melting point of sulfur. Can be easily heated.

  Here, in the placing process, if the molten sulfur-containing material 22 is filled in the mold 2 while vibrating the heated mold 2, a cavity is formed inside the filled sulfur-containing material 22. You can suppress what you can do.

In addition, the sulfur-containing material itself has a sufficiently high strength, but in this embodiment, the sulfur-containing material is reinforced within the thickness of the molten sulfur-containing material 22 filled in the mold 2 in the placing step. Since the net | network 25 is installed, the intensity | strength (especially breaking strength) of the sulfur solidified body panel 40 can further be raised.
For example, the lower layer 22a is formed by filling the molten sulfur-containing material 22 to almost half of the mold 2 and the reinforcing net 25 is installed on the lower layer 22a. Further, the sulfur-containing material 22 in a molten state is further filled to form the upper layer 22b, whereby the sulfur-solidified body panel 40 with increased strength can be easily manufactured, and the manufactured sulfur-solidified body panel 40 is also produced. It is also possible to suppress the intensity variation between.

  Furthermore, in the demolding step, the panel-like object 29 is peeled from the mold 2 by injecting pressurized air into the boundary between the panel-like object 29 molded in the mold 2 and the mold 2. The panel-like product 29 molded in the mold 2 can be easily taken out from the mold 2.

  Furthermore, in the curing process, the panel-like objects 29 are laid flat one by one on the upper surface of the heated curing bed 32, so that the panel-like objects 29 can be cured while keeping warm. Thereby, it is possible to prevent the panel-like object 29 from being warped, and even if the panel-like object 29 is warped, the warp can be corrected by the temperature of the heated curing bed 32. it can.

  In the curing process, the plurality of panel-like objects 29 taken out from the mold 2 are vertically placed with their panel surfaces (for example, the panel front surfaces and the panel back surfaces) in close contact with each other. It may be cooled naturally and cured. In this case, the warp of the panel-like object 29 can be corrected using the residual heat of the panel-like object 29. Here, in FIG. 17, the panel-like object 29 is placed vertically (that is, vertically). For example, the plate-like member 38 is inclined by a predetermined angle to constitute a panel stand, and the panel-like object 29 is You may make it place diagonally.

  Further, since a pin (through hole forming portion) 5 is provided on the bottom plate 3 of the mold 2, that is, the inner bottom surface of the mold 2, a through hole 43 extending in the thickness direction is provided in the sulfur solidified body panel 40. Can be formed. Therefore, for example, the through hole 43 is used as a bolt insertion hole through which an anchor bolt fixed to the concrete structure is inserted, and a nut is fastened to the anchor bolt, whereby the sulfur solidified body panel 40 is placed on the surface of the concrete structure. It is possible to attach and apply an anticorrosion coating to the concrete structure. Here, although two through holes 43 are formed in the sulfur solidified body panel 40 (see FIG. 18), the number of through holes 43 can be arbitrarily set, and one through hole is formed in the sulfur solidified body panel 40. A hole 43 may be formed.

By the way, when the sulfur solidified body panel 40 is attached to the surface of the concrete structure as described above, a nut or the like for fixing the sulfur solidified body panel 40 protrudes from the panel surface of the sulfur solidified body panel 40. Become. For this reason, it has the following problems.
That is, the sulfur solidified body panel 40 has a low roughness coefficient as a result of the protrusion from the panel surface that is generated when the panel surface itself is attached to the concrete structure, although the roughness coefficient of the panel surface itself is low. Therefore, applicable concrete structures were limited. In particular, it could not be used as an anticorrosion coating material for concrete structures such as waterways that require a low roughness coefficient.
Even if the sulfur solidified body panel 40 can be used as an anticorrosion coating material for a concrete structure, dirt and dust are likely to adhere to the protrusions from the panel surface, so regular maintenance is required. It was.
Therefore, in order to solve such a problem, the mold 2 was improved as follows.

19A and 19B show an improved mold 200. FIG. 19A is a plan view of the improved mold 200, and FIG. 19B is an enlarged cross-sectional view taken along the line CC of FIG. 19A.
As shown in FIGS. 19A and 19B, a stepped pin 51 is provided in place of the pin 5 on the bottom plate 3 of the improved mold frame 200, that is, on the inner bottom surface of the mold frame 200. Since other components are the same as those of the mold 2, the same reference numerals are given and description thereof is omitted. The stepped pin 51 forms a stepped through hole extending in the thickness direction in a panel-like product (sulfur solidified body panel) molded in the mold 200, and is provided on the inner bottom surface of the mold 200. The large-diameter portion 51a and the small-diameter portion 51b provided on the upper surface of the large-diameter portion 51a. Here, the diameter of the large diameter part 51a is preferably at least twice the diameter of the small diameter part 51b. For example, the large-diameter portion 51a may be formed in a cylindrical shape having a diameter of 32 mm (diameter) × 3-4 mm (height), and the small-diameter portion 51b may be formed in a cylindrical shape having a diameter of 16 mm (diameter) × 8-9 mm (height). it can. In addition, although the height of the stepped pin 51 is made equal to the height (12 mm) of the formwork 200 here, it is not limited to this, and it is only necessary that the stepped through hole can be formed in the sulfur solidified body panel. However, in order to suppress the strength reduction of the sulfur solidified body panel, the height of the large-diameter portion 51a is 1/3 or less, preferably 1/4 of the height of the mold 200 (that is, the thickness of the sulfur solidified body panel). The following.

  20A and 20B show a sulfur solidified body panel 400 manufactured by executing the above-described preheating step, placing step, cooling step, demolding step, and curing step using the mold 200. . As shown in FIGS. 20A and 20B, the sulfur solidified body panel 400 is formed with two stepped through holes 430 extending in the thickness direction. In the stepped through hole 430, the opening diameter on the inner bottom surface side of the mold 200 is larger than the opening diameter on the upper surface side of the mold 200. In other words, the sulfur solidified body panel 400 has a counterbore portion 430a that functions as a counterbore formed on the panel surface 400a side, and communicates with the counterbore portion 430a and has a smaller diameter than the counterbore portion 430a. The stepped through hole 430 including the through hole 430b is formed. In the present embodiment, the spot facing portion 430a is a cylindrical hole of φ32 mm (diameter) × 3 to 4 mm (depth), and the small-diameter through hole 430b is φ16 mm (diameter).

  According to such a sulfur solidified body panel 400, for example, an anchor bolt can be installed in an existing concrete structure, and the anchor bolt and the nut can be used to firmly fix the surface to the concrete structure. Further, if the height of the nut is made smaller than the depth of the counterbore part 430a, the nut can be accommodated in the counterbore part 430a, so that the portion of the anchor bolt protruding from the nut is cut and removed. Thereby, the part which protrudes from a panel surface (for example, waterway surface) can be eliminated. Thereby, it becomes possible to attach to various concrete structures including a water channel having a low required roughness coefficient, and the application range of the sulfur solidified body panel as an anticorrosion coating material can be expanded.

Here, a method for attaching the sulfur solidified body panel for attaching the sulfur solidified body panel 400 to a concrete structure such as a water channel facility as an anticorrosion coating material will be described.
FIGS. 21-24 has shown 1st Embodiment of the attachment method of a sulfur solidified body panel.
First, as shown in FIG. 21, an anchor hole 501 having a predetermined depth is formed on the surface of the concrete structure 500 using a drill or the like, and an anchor bolt is installed in the anchor hole 501. Specifically, an anchor hole 501 corresponding to the stepped through hole 430 of the sulfur solidified body panel 400 is formed on the surface of the concrete structure 500, and a female screw portion is formed on the inner peripheral surface of the formed anchor hole 501. (For example, M8) is formed, so that the screw anchor 503 is driven, and in order to be driven, a dimension bolt 505 (for example, M8) as an anchor bolt is attached to the screw anchor 503. However, the present invention is not limited to this, and an anchor bolt that is directly fixed to the anchor hole 501 may be used without using the female screw anchor 503.

  Next, as shown in FIG. 22, an adhesive 507 is applied to at least one of the panel back surface of the sulfur solidified body panel 400 and the surface of the concrete structure 500, and the stepped through-hole 430 (small diameter of the sulfur solidified body panel 400 is reduced). The panel back surface of the sulfur solidified body panel 400 is attached to the surface of the concrete structure 500 so that the anchor bolt (dimension bolt 505) is inserted into the through hole 430b). Here, the adhesive 507 is an acid-resistant adhesive, and for example, a resin adhesive can be used. Preferably, an adhesive is used in which acid sand is kneaded with acid-resistant epoxy resin (main agent 5: curing agent 1) at a mixing ratio of 1: 1. In this way, by adding cinnabar sand to the acid-resistant epoxy resin, the viscosity of the adhesive 507 is increased and the dripping of the adhesive 507 is prevented, thereby improving the workability.

  Next, as shown in FIG. 23, the countersunk nut 509 is tightened from the head side of the cut bolt 505 to fix the sulfur solidified body panel 400 while pressing it against the surface of the concrete structure 500. Here, the outer diameter of the countersunk nut 509 is smaller than the diameter of the spot facing portion 430a of the sulfur solidified body panel 400 and larger than the diameter of the small through hole 430b, and the height thereof is the seat of the sulfur solidified body panel 400. A special nut smaller than the depth of the counterbore 430a, preferably a special nut whose outer diameter is twice or more the screw diameter (here, M8) and whose height is about 2.5 mm. By tightening such a countersunk nut 509 from the head side of the cutting bolt 505, the sulfur solidified body panel 400 is pressed and fixed to the surface of the concrete structure 500, and the countersunk nut 509 is fixed to sulfur. The body panel 400 is accommodated in the counterbore 430a while closing the small-diameter through-hole 430b.

  Next, as shown in FIG. 24, the portion protruding from the countersunk nut 509 of the cutting bolt 505 is cut, and then the above-mentioned adhesive 507 is filled in the counterbore 430 a of the sulfur solidified body panel 400. The head side (cut surface) of the cutting bolt 505 and the flat nut 509 are covered, and the adhesive 509 is leveled to flatten the panel surface of the sulfur solidified body panel 400.

  In this manner, the plurality of sulfur solidified body panels 400 are attached to the surface of the concrete structure 500, and the above-mentioned adhesive 507 is applied to the joint portion between the adjacent sulfur solidified body panels 400 to perform joint treatment. When the adhesive 507 is cured, the attachment of the sulfur solidified body panel 400 to the concrete structure 500 is completed.

  According to the method for attaching the sulfur solidified body panel (first embodiment), the sulfur solidified body panel 400 can be firmly fixed to an existing concrete structure and used to fix the sulfur solidified body panel 400. The countersunk nut 509 is accommodated in the counterbore part 430a of the sulfur solidified body panel so that the panel surface can be flattened. Thereby, anticorrosion coating can be applied to various concrete structures including a water channel having a low required roughness coefficient, and the life of the concrete structure can be extended. In addition, since the panel surface becomes flat, adhesion of dirt and dust can be suppressed, and maintenance can be unnecessary or greatly reduced.

  Here, the sulfur solidified body panel 400 is pressed or vibrated from the panel surface side before or while tightening the countersunk nut 509 from the head side of the cutting bolt 505, thereby allowing the sulfur solidified body panel to be pressed. The adhesive 507 between the panel back surface of 400 and the surface of the concrete structure 500 may be spread evenly.

  For example, before tightening the countersunk nut 509 from the head side of the dimensioning bolt 505, a pressing member (not shown) is arranged on the panel surface side of the sulfur solidified body panel 400, and a predetermined nut (M8) is trimmed by the dimensioning bolt. The sulfur solidified body panel 400 may be temporarily fixed so that the sulfur solidified body panel 400 is pressed against the surface of the concrete structure 500 by the pressing member by tightening from the head side of 505. If it does in this way, the adhesive agent 507 between the panel back surface of the sulfur solidified body panel 400 and the surface of the concrete structure 500 can be spread more uniformly. In this case, after removing the predetermined nut and the pressing member, the countersunk nut 509 is tightened from the head side of the dimension bolt 505 to fix the sulfur solidified body panel 400 to the surface of the concrete structure 500.

  FIGS. 25-28 has shown 2nd Embodiment of the attachment method of a sulfur solidified body panel. In addition, about the component same as the said 1st Embodiment, the detailed description is abbreviate | omitted using the same code | symbol.

  First, as shown in FIG. 25, an anchor hole 501 is formed on the surface of the concrete structure 500 using a drill or the like, and a female thread portion (for example, M8) is formed on the inner peripheral surface of the formed anchor hole 501. Therefore, the screw anchor 503 is driven.

  Next, as shown in FIG. 26, an adhesive 507 is applied to at least one of the panel rear surface of the sulfur solidified body panel 400 and the surface of the concrete structure 500, and the stepped through-hole 430 (small diameter of the sulfur solidified body panel 400 is reduced). The panel back surface of the sulfur solidified body panel 400 is affixed to the surface of the concrete structure 500 so that the through-hole 430 b) matches the female screw anchor 503.

  Next, as shown in FIG. 27, a low head bolt 511 (for example, M8) is inserted through the stepped through hole 430 of the sulfur solidified body panel 400 and tightened into the female screw anchor 503, and the sulfur solidified body panel 400 is fixed to the concrete structure. Fix while pressing against the surface of 500. Here, the low head bolt 511 has an outer diameter of the head smaller than the diameter of the counterbore 430a of the sulfur solidified body panel 400 and larger than the diameter of the small through hole 430b, and the height of the head is sulfur. It is smaller than the depth of the spot facing portion 430a of the solidified body panel 400. Preferably, the low head bolt 511 has an outer diameter of the head that is at least twice the screw diameter (M8) (for example, φ24 mm), a height of the head of about 2.5 mm, and a length below the neck. A thing of about 40 mm is used. When the sulfur solidified body panel 400 is pressed and fixed to the surface of the concrete structure 500 using such a low head bolt 511, the head of the low head bolt 511 sits while closing the small-diameter through hole 430 b of the sulfur solidified body panel 400. It is accommodated in the bore portion 430a.

  And as shown in FIG. 28, the above-mentioned adhesive 507 is filled in the counterbore part 430a of the sulfur solidified body panel 400 to cover the head of the low head bolt 511, and the adhesive 507 is leveled and the sulfur solidified body. The panel surface of the panel 400 is flattened.

  In this manner, the plurality of sulfur solidified body panels 400 are attached to the surface of the concrete structure 500, and the above-mentioned adhesive 507 is applied to the joint portion between the adjacent sulfur solidified body panels 400 to perform joint treatment. When the adhesive 507 is cured, the attachment of the sulfur solidified body panel 400 to the concrete structure 500 is completed.

  According to the sulfur solidified body panel mounting method (second embodiment), the sulfur solidified body panel 400 can be firmly fixed to an existing concrete structure and used to fix the sulfur solidified body panel 400. The head of the low head bolt 511 is accommodated in the spot facing portion 430a of the sulfur solidified panel 400, and the surface of the panel can be flattened. Thereby, like the said 1st Embodiment, anti-corrosion coating | cover can be given to various concrete structures including a water channel etc. with which the required roughness coefficient is low, and lifetime improvement of this concrete structure can be aimed at. . In addition, since the panel surface becomes flat, adhesion of dirt and dust can be suppressed, and maintenance can be unnecessary or greatly reduced.

  Here, also in the present embodiment, similarly to the first embodiment, a cutting bolt (for example, M8) 505 may be attached to the screw anchor 503 for being driven into the concrete structure 500. In this case, the cut bolt 505 is inserted into the stepped through-hole 430 (small-diameter through-hole 430b) of the sulfur solidified body panel 400 so that the panel back surface of the sulfur solidified body panel 400 is placed on the surface of the concrete structure 500. paste. If it does in this way, since the sulfur solidification body panel 400 is hold | maintained by the cutting bolt 505, the affixing to the concrete structure 500 of the sulfur solidification body panel 400 can be performed easily. In this case, after attaching the sulfur solidified body panel 400 to the surface of the concrete structure 500, the dimensioning bolt 505 is removed, and then the sulfur solidified body panel 400 is fixed by the low head bolt 511.

  Further, when the cutting bolt 505 is attached to the female screw anchor 503, the sulfur solidified body panel 400 is pressed against the surface of the concrete structure 500 by the pressing member, as in the first embodiment, and the sulfur solidified body is obtained. The adhesive 509 between the panel back surface of the panel 400 and the surface of the concrete structure 500 can also be spread uniformly. In this case, the sulfur solidified panel 400 is fixed by the low head bolt 511 after the predetermined nut, the pressing member, and the dimensioning bolt 505 are removed.

  DESCRIPTION OF SYMBOLS 1 ... Mold heater, 2 ... Mold, 5 ... Pin (through-hole formation part), 9 ... Cap which injects pressurized air, 10 ... Air injection hole, 15 ... Steam injection pipe, 16 ... Steam discharge | emission Pipe 20, work bench 22, sulfur-containing material 22 a 1 layer (lower layer) sulfur-containing material 22 b second layer (upper layer) sulfur-containing material 25, reinforcing net 28, air tube 29 DESCRIPTION OF SYMBOLS ... Panel-like thing, 31 ... Curing place, 32 ... Curing bed, 40 ... Sulfur solidification body panel, 43 ... Through-hole, 51 ... Stepped pin (through-hole formation part), 200 ... Formwork, 400 ... Sulfur solidification body panel 430 ... Stepped through hole, 430a ... Counterbore part, 430b ... Small diameter through hole, 500 ... Concrete structure, 501 ... Anchor hole, 503 ... Female thread anchor, 505 ... Cut bolt, 507 ... Acid resistant adhesion Agent, 509 ... flat nut, 511 ... low head Belt

Claims (10)

A method for producing a sulfur solidified panel using a sulfur-containing material,
A preheating step of heating the box-shaped formwork whose upper surface is open to a temperature about the melting point of sulfur;
A casting step of filling the molten sulfur-containing material in the mold after heating;
A slow cooling step in which the formwork filled with the sulfur-containing material is naturally cooled in air and gradually cooled;
A demolding step of taking out the panel-like material molded in the mold from the mold after natural cooling;
A curing process for curing the panel-like material taken out of the mold while keeping warm ,
A method for producing a solidified sulfur panel comprising: 2. The method for producing a solidified sulfur panel according to claim 1, wherein in the preheating step, the mold is inserted into a mold heater using a heat source as steam or an electric heater to heat the mold. 3. The method for producing a sulfur solidified body panel according to claim 1, wherein the placing step fills the molten sulfur-containing material in the mold while vibrating the mold. 4. The sulfur solidified body according to any one of claims 1 to 3, wherein the placing step includes a step of installing a reinforcing net within the thickness of the molten sulfur-containing material filled in the mold. Panel manufacturing method. The placing process includes
Filling the melted sulfur-containing material into the mold and forming a lower layer;
Installing a reinforcing net on the lower layer;
Filling the melted sulfur-containing material on the installed reinforcing net to form an upper layer;
The manufacturing method of the sulfur solidified body panel of Claim 4 containing this. The said demolding process inject | pours pressurized air into the boundary part of the panel-shaped object shape | molded in the said mold, and the said mold, peels off the said panel-shaped object, and takes out from the said mold. The manufacturing method of the sulfur solidified body panel as described in any one of -5. 7. The curing process according to any one of claims 1 to 6, wherein the panel-like material taken out from the mold is placed on the upper surface of a heated curing bed one by one and cured while keeping the panel-like material warm. Or one
Method of manufacturing sulfur concrete substance panel according to One. In the curing step, a plurality of panel-like objects taken out from the formwork are vertically placed so that their panel surfaces are in close contact with each other, and the plurality of panel-like objects are naturally cooled and cured. method of manufacturing sulfur concrete substance panel according to any one of. The at least 1 through-hole formation part which forms the through-hole extended in the thickness direction in the said panel-like thing is provided in the inner bottom face of the said formwork, The any one of Claims 1-8 is provided. Manufacturing method of sulfur solidified body panel. The said through-hole is a manufacturing method of the sulfur solidified body panel of Claim 9 which is a stepped through-hole whose opening diameter by the side of the inner bottom face of the said formwork is larger than the opening diameter by the upper surface side of the said formwork.

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