Reinforcement for cement structures

Abstract

To provide a reinforcing body 6 that is flexible and can contribute to the high strength of cement-molded structures. [Solution] The reinforcing body 6 for cement molded objects has a bundle 8 containing a plurality of wires 12 and a cover 10 into which this bundle 8 is inserted. Preferably, at least one wire 8 has a curve. The cover 10 has a cylindrical shape. The cover 10 may have a ring shape. The cover 10 may be a spirally wound band. The cover 10 may be obtained by bonding two sheets together. The reinforcing body 6 may have a plurality of covers 10 spaced apart from each other.

Description

Technical Field

[0001] This specification discloses a reinforcing body suitable for a three-dimensional layer forming method for cement molded objects.

Background Art

[0002] As a building made of reinforced concrete, the formwork method is known. In this formwork method, first, reinforcing bars are inserted into the formwork. Fresh concrete is poured into this formwork. This fresh concrete solidifies, and a building is obtained. The reinforcing bars integrate with the concrete. The reinforcing bars reinforce the building.

[0003] Buildings can also be obtained by a three-dimensional layer forming method. In the three-dimensional layer forming method, a cement composition is extruded from a moving nozzle. From the viewpoint of avoiding interference with the nozzle, reinforcing bars cannot be used in this forming method. In this building, reinforcement by reinforcing bars cannot be performed.

[0004] Japanese Unexamined Patent Application Publication No. 2022-046028 discloses a reinforcing body suitable for a molded object obtained by a three-dimensional layer forming method. This reinforcing body is supplied from a nozzle that extrudes a cement composition. This reinforcing body is flexible.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] The reinforcing performance of the reinforcing body disclosed in Japanese Unexamined Patent Application Publication No. 2022-046028 is insufficient. What the applicant intends is to provide a reinforcing body that is flexible and can contribute to the high strength of a cement molded object.

Means for Solving the Problems

[0007] The reinforcing members for cement structures disclosed herein are A bundle containing multiple wires, and A cylindrical or ring-shaped cover into which the above bundle is inserted. It has. [Effects of the Invention]

[0008] This reinforcement increases the strength of cement structures. Because this reinforcement is flexible, it can be applied to curved cement structures. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view showing a cement-molded object according to one embodiment. [Figure 2] Figure 2 is a plan view showing the cement structure shown in Figure 1. [Figure 3] Figure 3 is a cross-sectional view along the line III-III in Figure 2. [Figure 4] Figure 4 is a plan view showing a portion of the reinforcing body of the cement structure shown in Figure 2. [Figure 5] Figure 5 is a cross-sectional view along the VV line in Figure 4. [Figure 6] Figure 6(a) is a plan view showing the reinforcing wires in Figure 4, and Figure 6(b) is a view of the wires in Figure 6(a) from the right. [Figure 7] Figure 7 is an enlarged cross-sectional view along the line VII-VII in Figure 6. [Figure 8] Figure 8 is a cross-sectional perspective view showing the cover of the reinforcing body shown in Figure 5. [Figure 9] Figure 9 is a front view showing an example of a manufacturing method for the cement molded object shown in Figure 1. [Figure 10] Figure 10 is a plan view showing the hardened cement obtained by the manufacturing method shown in Figure 9. [Figure 11] Figure 11 is a plan view showing a part of the reinforcing body of a cement structure according to another embodiment. [Figure 12]FIG. 12 is a plan view showing a part of a reinforcing member of a cement molded article according to still another embodiment. [Figure 13] FIG. 13 is a plan view showing a part of a reinforcing member of a cement molded article according to still another embodiment. [Figure 14] FIG. 14 is a cross-sectional perspective view showing a cover of a reinforcing member of a cement molded article according to still another embodiment. [Figure 15] FIG. 15 is a plan view showing a reinforcing member of a cement molded article according to still another embodiment. [Figure 16] FIG. 16 is a perspective view showing a cover of the reinforcing member of FIG. 15.

MODE FOR CARRYING OUT THE INVENTION

[0010] Hereinafter, preferred embodiments will be described in detail with reference to the drawings as appropriate.

[0011] In FIGS. 1 to 3, a cement molded article 2 is shown. In each drawing, an arrow X represents the width direction of the molded article 2, an arrow Y represents the length direction of the molded article 2, and an arrow Z represents the height direction of the molded article 2.

[0012] This cement molded article 2 has a plurality of cement hardened layers 4. In FIGS. 1 and 3, a first cement hardened layer 4a, a second cement hardened layer 4b, a third cement hardened layer 4c, and a fourth cement hardened layer 4d are shown. The second cement hardened layer 4b is laminated on the first cement hardened layer 4a. The third cement hardened layer 4c is laminated on the second cement hardened layer 4b. The fourth cement hardened layer 4d is laminated on the third cement hardened layer 4c.

[0013] Each cement hardened layer 4 can be obtained by the hardening of the cement composition. The specific material of the cement hardened layer 4 is concrete or mortar. The composition for the cement hardened layer 4 whose material is concrete is fresh concrete. This fresh concrete is a composition containing cement, aggregate, and water. The composition for the cement hardened layer 4 whose material is mortar is fresh mortar. This fresh mortar is a composition containing cement, fine aggregate, and water.

[0014] This cement molded article 2 further has a plurality of reinforcing members 6. In FIG. 3, a first reinforcing member 6a, a second reinforcing member 6b, and a third reinforcing member 6c are shown. The first reinforcing member 6a is located at the boundary between the first cement hardened layer 4a and the second cement hardened layer 4b. In the present embodiment, the first reinforcing member 6a exists straddling the first cement hardened layer 4a and the second cement hardened layer 4b. The first reinforcing member 6a may be buried in either the first cement hardened layer 4a or the second cement hardened layer 4b. The second reinforcing member 6b is located at the boundary between the second cement hardened layer 4b and the third cement hardened layer 4c. In the present embodiment, the second reinforcing member 6b exists straddling the second cement hardened layer 4b and the third cement hardened layer 4c. The second reinforcing member 6b may be buried in either the second cement hardened layer 4b or the third cement hardened layer 4c. The third reinforcing member 6c is located at the boundary between the third cement hardened layer 4c and the fourth cement hardened layer 4d. In the present embodiment, the third reinforcing member 6c exists straddling the third cement hardened layer 4c and the fourth cement hardened layer 4d. The third reinforcing member 6c may be buried in either the third cement hardened layer 4c or the fourth cement hardened layer 4d. [[ID=⑤]] [[ID=⑥]]

[0015] [[ID=⑦]] [[ID=⑧]]In FIGS. 4 and 5, the reinforcing member 6 is shown. This reinforcing member 6 has a bundle 8 and a cover 10. The bundle 8 includes a plurality of wires 12. The bundle 8 is inserted into the cover 10. The cover 10 wraps the bundle 8. A part of the bundle 8 may be exposed from the cover 10. [[ID=⑨]] [[ID=⑩]]

[0016] [[ID=⑪]] In Figure 5, the reinforcing body 6 is placed on a base 14. This base 14 is a rigid body. The only force acting on the reinforcing body 6 is the Earth's gravity. The reinforcing body 6 has a flattened cross-sectional shape due to its own weight. Specifically, the reinforcing body 6 has a cross-sectional shape in which the horizontal length (left-right direction in Figure 5) is greater than the vertical length (up-down direction in Figure 5). As shown in Figure 5, there may be space between wires 12 and other wires 12. In this reinforcing body 6, the wires 12 are loosely arranged. This reinforcing body 6 is flexible.

[0017] Figures 6 and 7 show the wire 12. The preferred material for this wire 12 is metal. Preferred metals include alloy steel such as stainless steel and carbon steel. The wire 12 may have a coating on its surface, such as a plating layer. The material of the wire 12 may also be carbon, synthetic resin, glass, etc. The wire 12 may be a single wire or an assembly of multiple strands. The assembly may be a stranded wire. In this embodiment, the cross-section of the wire 12 is circular. In Figures 6 and 7, arrow D represents the diameter of this wire 12. The cross-section of the wire 12 may be non-circular. Examples of non-circular shapes include polygons such as quadrilaterals, ellipses, and track shapes.

[0018] As shown in Figure 6, the wire 12 has a curve. A wire 12 with a curve can be manufactured by a known method of curving. In this embodiment, the wire 12 has a wavy curve. In this wave shape, there are multiple units, each of which is curved, in sequence. The wire 12 may have a wave shape in which corners exist between units. The wire 12 may have a wave shape in which multiple units, each of which is straight, are in sequence. The wire 12 may have a wave shape that includes both curved units and straight units.

[0019] In this embodiment, the amplitude of the wave is constant. Therefore, the maximum wave height of this wave is twice the amplitude. In Figures 6 and 7, arrow H represents the maximum wave height of this wire 12. In Figure 6, arrow Pw represents the wavelength of this wire 12. The wire 12 may have a curve where the amplitude is not constant. The wire 12 may have a curve where the wavelength is not constant. The wire 12 may have a curve in a three-dimensional shape, such as a spiral. The reinforcing body 6 may include both wires 12 with curves and wires 12 without curves.

[0020] In the reinforcing body 6, the wires 12 make point contact, line contact, or surface contact with each other. Wires 12 that have a tendency to curl are more likely to make point contact with other wires 12. In this reinforcing body 6, the contact area between wires 12 and other wires 12 is small. The reinforcing body 6, which includes wires 12 that have a tendency to curl, is flexible.

[0021] Figure 8 shows the cover 10. This cover 10 is cylindrical. The cover 10 has an outer surface 16 and an inner surface 18. The inner diameter of the cover 10 is sufficiently large. Therefore, the restraining force on the bundle 8 by the cover 10 is small. This reinforcing body 6 is flexible. The cover 10 suppresses the unraveling of the bundle 8. The reinforcing body 6 with the cover 10 is easy to handle. In a preferred cover 10, the cross-section may deform into a flattened shape due to the weight of the cover 10.

[0022] The cover 10 may be made from woven fabric, nonwoven fabric, paper, synthetic resin sheet, synthetic resin film, rubber sheet, metal sheet, metal mesh, etc. The material of the woven fabric is synthetic fiber or natural fiber. Examples of synthetic fibers include nylon fiber and polyester fiber. Examples of natural fibers include cotton fiber, linen fiber and silk fiber.

[0023] From the viewpoint of ease of deformation, the thickness of the cover 10 is preferably 1.0 mm or less, and particularly preferably 0.5 mm or less. A typical cover 10 is a film with a thickness of 0.1 mm or less.

[0024] The cover 10 may have numerous holes. Each hole extends from the outer surface 16 to the inner surface 18 of the cover 10. During the molding of the cement structure 2 including the cover 10, the cement composition may pass through the holes and reach the bundle 8. The cement structure 2 can be sufficiently reinforced by the reinforcing members 6.

[0025] Figure 9 shows a method for manufacturing the cement molded object 2. This figure shows a first cement composition 20a, a first reinforcing body 6a, a second cement composition 20b, a second reinforcing body 6b, and a nozzle 22. The nozzle 22 is part of the 3D printer. In Figure 9, the second cement composition 20b is extruded from this nozzle 22. The second reinforcing body 6b is also extruded from this nozzle 22. The second reinforcing body 6b is extruded with a portion of it embedded in the second cement composition 20b. The second reinforcing body 6b may be extruded with the entire body embedded in the second cement composition 20b. The second reinforcing body 6b may be extruded from a nozzle different from the nozzle 22 for the second cement composition 20b.

[0026] As the nozzle 22 moves in the direction of arrow A1, the second cement composition 20b is extruded, and this second cement composition 20b is laminated onto the first cement composition 20a. The second cement composition 20b covers the first reinforcing body 6a. Similarly, the cement compositions 20 are then sequentially laminated.

[0027] When the first cement composition 20a hardens, a first cement hardened layer 4a (see Figure 1) is obtained. When the second cement composition 20b hardens, a second cement hardened layer 4b is obtained. The second cement hardened layer 4b is integral with the first cement hardened layer 4a. Therefore, the boundary between the first cement hardened layer 4a and the second cement hardened layer 4b cannot be clearly seen. Since the cement composition 20 is fluid, the height BH (see Figure 3) of the boundary between the first cement hardened layer 4a and the second cement hardened layer 4b is not constant. The first reinforcing body 6a is located near the boundary between the first cement hardened layer 4a and the second cement hardened layer 4b. The first reinforcing body 6a is embedded in both or either the first cement hardened layer 4a and the second cement hardened layer 4b.

[0028] This manufacturing method is also known as 3D printing. This manufacturing method can produce a cement-molded object 2 that is reinforced not by reinforcing bars, but by reinforcing members 6. Because the reinforcing members 6 are flexible, they can take on a flattened shape even within the cement-molded object 2. In the embodiments shown in Figures 2 and 3, the reinforcing members 6 have a long cross-sectional shape along the width direction X of the cement-molded object 2. The width Wr of the reinforcing members 6 in the cement-molded object 2 is large. A reinforcing member 6 with a large width Wr can reinforce a wide area in the width direction X of the cement-molded object 2. From the viewpoint of reinforcement, the ratio of the width Wr of the reinforcing members 6 to the width Wc of the cement-hardened layer 4 is preferably 20% or more, more preferably 30% or more, and particularly preferably 35% or more.

[0029] When the nozzle 22 moves in a straight line, a straight cement hardened layer 4 is formed. When the nozzle 22 moves in a curved direction, a curved cement hardened layer 4 is formed. Figure 10 shows the curved cement hardened layer 4. As mentioned above, this reinforcing body 6 is flexible. As shown in Figure 10, this reinforcing body 6 follows the curvature of the cement hardened layer 4. This reinforcing body 6 is also suitable for curved cement molded objects 2.

[0030] The cement composition 20 may contain a large number of short fibers dispersed in the matrix. These short fibers contribute to the strength of the cement molded object 2. Since the cement molded object 2 has reinforcing bodies 6, only a small amount of short fibers is needed. A cement composition 20 containing a small amount of short fibers, or none at all, is less likely to cause clogging of the nozzle 22. The cement molded object 2 may also contain reinforcing bars along with the reinforcing bodies 6.

[0031] In Figure 5, arrow Wr represents the width of the reinforcing body 6, and arrow Hr represents the height of the reinforcing body 6. The width Wr and height Hr are measured with only Earth's gravity acting on the reinforcing body 6. A reinforcing body 6 with a large ratio of width Wr to height Hr (Wr / Hr) has a small restraining force between the wires 12. A reinforcing body 6 with a large ratio (Wr / Hr) has excellent flexibility. From the viewpoint of flexibility, a ratio (Wr / Hr) of 1.1 or higher is preferable, 1.5 or higher is more preferable, and 3.0 or higher is particularly preferable. From the viewpoint of the handling of the reinforcing body 6, a ratio (Wr / Hr) of 10.0 or lower is preferable. The width Wr and height Hr are measured at 10 randomly selected locations from a sample with a length of 500 mm or more. The measurements are taken using calipers.

[0032] In each wire 12, the ratio of the maximum wave height H to the diameter D (see Figures 6 and 7) is preferably 150% or more. Wires 12 with this ratio of 150% or more are flexible. From this viewpoint, this ratio is more preferably 180% or more, and particularly preferably 200% or more. This ratio is preferably 1000% or less.

[0033] The diameter D of each wire 12 is preferably 0.05 mm or more and 1 mm or less. The number N of wires 12 in the reinforcing body 6 is preferably 3 or more, more preferably 5 or more, and particularly preferably 10 or more. This number N is preferably 100 or less. The reinforcing body 6 may have multiple types of wires 12 with different diameters D. The diameter D of all wires 12 in the reinforcing body 6 may be the same.

[0034] In one reinforcing member 6, the pitch Pw of wire 12 may be the same as the pitch Pw of other wire 12. In one reinforcing member 6, the pitch Pw of wire 12 may be different from the pitch Pw of other wire 12.

[0035] A bundle 8 may be obtained by twisting together multiple wires 12.

[0036] Figure 11 shows a reinforcing body 24 of a cement molded object according to another embodiment. This reinforcing body 24 has a bundle 28 containing a first wire 26a and a second wire 26b. This bundle 28 has a number of wires 26, but the illustration of wires 26 other than the first wire 26a and the second wire 26b is omitted. The material of the first wire 26a and the second wire 26b is the same as the material of the wire 12 shown in Figure 6. This reinforcing body 24 has a cover which is not shown. The configuration of this cover is the same as the configuration of the cover 10 shown in Figure 8.

[0037] The first wire 26a has a curve. In this embodiment, the first wire 26a has a corrugated curve. In Figure 11, arrow Ha represents the maximum wave height of the curve of the first wire 26a, and arrow Pa represents the pitch of the curve of the first wire 26a. The second wire 26b has a curve. In this embodiment, the second wire 26b has a corrugated curve. In Figure 11, arrow Hb represents the maximum wave height of the curve of the second wire 26b, and arrow Pb represents the pitch of the curve of the second wire 26b. In this embodiment, the maximum wave height Hb of the second wire 26b is the same as the maximum wave height Ha of the first wire 26a, and the pitch Pb of the second wire 26b is the same as the pitch Pa of the first wire 26a.

[0038] In Figure 11, the symbol PKa represents the peak of the curvature of the first wire 26a, and the symbol PKb represents the peak of the curvature of the second wire 26b. In the vertical direction of Figure 11, the position of peak PKb is different from the position of peak PKa. In other words, the phase of the curvature of the second wire 26b is different from the phase of the curvature of the first wire 26a. Therefore, the contact area of ​​the second wire 26b with the first wire 26a is small. This difference in phase may contribute to the flexibility of the reinforcing body 24.

[0039] In Figure 11, arrow L represents the phase shift distance. The ratio Pt, calculated using the following formula, is an index (%) representing the magnitude of the phase shift. Pt = (L / (Pa / 2)) * 100 From the viewpoint of the flexibility of the reinforcing body 24, the ratio of Pt is preferably 5% or more, more preferably 8% or more, and particularly preferably 10% or more. This ratio of Pt may also be 100%.

[0040] Figure 12 shows a reinforcing body 30 for a cement molded structure according to yet another embodiment. This reinforcing body 30 has a bundle 34 including a first wire 32a and a second wire 32b. This bundle 34 has a number of wires 32, but the illustration of wires 32 other than the first wire 32a and the second wire 32b is omitted. The material of the first wire 32a and the second wire 32b is the same as the material of the wire 12 shown in Figure 6. This reinforcing body 30 has a cover which is not shown. The configuration of this cover is the same as the configuration of the cover 10 shown in Figure 8.

[0041] The first wire 32a has a curve. In this embodiment, the first wire 32a has a corrugated curve. In Figure 12, arrow Ha represents the maximum wave height of the curve of the first wire 32a. The second wire 32b has a curve. In this embodiment, the second wire 32b has a corrugated curve. In Figure 12, arrow Hb represents the maximum wave height of the curve of the second wire 32b. In this embodiment, the maximum wave height Hb of the second wire 32b is smaller than the maximum wave height Ha of the first wire 32a. In other words, the shape of the curve of the second wire 32b is different from the shape of the curve of the first wire 32a. Therefore, the contact area of ​​the second wire 32b with the first wire 32a is small. The difference in the shape of the wires 32 can contribute to the flexibility of the reinforcing body 30. The pitch of the curve of the second wire 32b may be different from the pitch of the curve of the first wire 32a. The maximum wave height and pitch of the curve of the second wire 32b may differ from the maximum wave height and pitch of the curve of the first wire 32a, respectively.

[0042] From the viewpoint of the flexibility of the reinforcing body 30, the ratio of the maximum wave height Ha to the maximum wave height Hb (Ha / Hb) is preferably 1.10 or higher, more preferably 1.20 or higher, and particularly preferably 1.25 or higher. From the viewpoint of the handlingability of the reinforcing body 30, this ratio (Ha / Hb) is preferably 10.0 or lower.

[0043] Figure 13 shows a reinforcement 36 for a cement structure according to yet another embodiment. This reinforcement 36 has a bundle 38 and a cover 40. The bundle 38 contains a plurality of wires 42. The specifications of the bundle 38 are the same as those of the bundle 8 shown in Figures 4 and 5. The specifications of each wire 42 are the same as those of the wires 12 shown in Figures 6 and 7. The material of the cover 40 is the same as that of the cover 10 shown in Figure 8.

[0044] The cover 40 is formed by spirally winding a band 44 around the bundle 38. Figure 13 shows the band 44 in a state where a portion is not wound around the bundle 38. When wound, the band 44 takes on a tubular shape. The bundle 38 is inserted into this cover 40. The cover 40 wraps the bundle 38. The cover 40 prevents the bundle 38 from unraveling. The reinforcing body 36 having the cover 40 is easy to handle. A portion of the bundle 38 may be exposed from the cover 40.

[0045] Figure 14 shows a cover 46 of a reinforcement body for a cement molded object according to yet another embodiment. This cover 46 is cylindrical. The material of this cover 46 is the same as the material of cover 10 shown in Figure 8. This reinforcement body has a bundle (not shown). The specifications of this bundle are the same as those of bundle 8 shown in Figures 4 and 5. This bundle contains multiple wires. The specifications of each wire are the same as those of wire 12 shown in Figures 6 and 7. The bundle is inserted into this cover 46. The cover 46 wraps the bundle. The cover 46 prevents the bundle from coming apart. The reinforcement body with the cover 46 is easy to handle. Part of the bundle may be exposed from the cover 46.

[0046] The cover 46 has a first sheet 48 and a second sheet 50. The first sheet 48 includes a first main portion 52, a first right flap 54, and a first left flap 56. The first main portion 52 has a cross-sectional shape that is generally semicircular. The second sheet 50 includes a second main portion 58, a second right flap 60, and a second left flap 62. The second main portion 58 has a cross-sectional shape that is generally semicircular. A cylinder is formed by joining the second right flap 60 to the first right flap 54 and joining the second left flap 62 to the first left flap 56. The joining can be done by adhesive or welding. The joining may be done locally on each flap.

[0047] Figure 15 shows a reinforcement 64 for a cement structure according to yet another embodiment. This reinforcement 64 has a bundle 66 and a plurality of covers 68. The bundle 66 contains a plurality of wires 70. The specifications of the bundle 66 are the same as those of the bundle 8 shown in Figures 4 and 5. The specifications of each wire 70 are the same as those of the wires 12 shown in Figures 6 and 7. The material of each cover 68 is the same as that of the cover 10 shown in Figure 8.

[0048] Figure 16 shows a cover 68, which is ring-shaped. As shown in Figure 15, the bundle 66 is inserted into this cover 68. The cover 68 wraps around the bundle 66. The cover 68 prevents the bundle 66 from unraveling. The reinforcement 64 with the cover 68 is easy to handle. As is clear from Figure 15, the covers 68 are spaced apart from each other. Therefore, the bundle 66 is partially exposed from the cover 68. In the exposed areas, the bundle 66 is not constrained by the cover 68. This reinforcement 64 is flexible.

[0049] The reinforcing member 64 may have a cable tie as a cover 68. Examples of cable ties include the product names "Insulok" and "Tie-Wrap". The cover 68 may also be a rubber band.

[0050] [Disclosure items] Each of the following items discloses a preferred embodiment.

[0051] [Item 1] A bundle containing multiple wires, and A cylindrical or ring-shaped cover into which the above bundle is inserted. A reinforcing body for cement structures, equipped with the following features.

[0052] [Item 2] The reinforcing body described in item 1, wherein at least one wire is bent.

[0053] [Item 3] The reinforcing body according to item 2, comprising a first wire having a curvature and a second wire having a curvature whose phase is different from the phase of the curvature of the first wire.

[0054] [Item 4] The reinforcing body according to item 2, comprising a first wire having a curvature and a second wire having a curvature whose shape differs from the curvature of the first wire.

[0055] [Item 5] The above bundle has a structure in which the above wires are twisted, as described in any of items 1 to 4.

[0056] [Item 6] The above cover has numerous holes, Each hole is a reinforcing member as described in item 1 to 5, extending from the outer surface of the cover to the inner surface of the cover.

[0057] [Item 7] The above cover is a spirally wound band, as described in any of items 1 to 6.

[0058] [Item 8] The above cover, First sheet including first main section, first right flap, and first left flap and The second sheet includes the second main section, the second right flap, and the second left flap. It has, A reinforcing body according to any one of items 1 to 6, wherein the second right flap is joined to the first right flap, and the second left flap is joined to the first left flap.

[0059] [Item 9] The reinforcing body according to item 8, wherein the second right flap is locally joined to the first right flap, and the second left flap is locally joined to the first left flap.

[0060] [Item 10] A reinforcing body according to any one of items 1 to 9, having a first cover and a second cover spaced apart from the first cover.

[0061] [Item 11] First cement hardened layer, The second cement hardened layer is laminated on the first cement hardened layer mentioned above. and Reinforcement embedded in the first cement hardened layer or the second cement hardened layer It is equipped with, The above reinforcing body, A bundle containing multiple wires, and A cylindrical or ring-shaped cover into which the above bundle is inserted. A cement sculpture having [a certain characteristic].

[0062] [Item 12] A: A step of extruding a reinforcing body having a bundle containing multiple wires and a cylindrical or ring-shaped cover into which this bundle is inserted, and a first cement composition. B: A step of extruding the second cement composition and laminating it onto the first cement composition. and C: A process for curing the first cement composition and the second cement composition. A method for manufacturing cement sculptures, comprising the following features. [Industrial applicability]

[0063] The reinforcement described above is suitable for various cement structures such as buildings, bridges, poles, tunnels, and wharves. [Explanation of symbols]

[0064] 2. Cement sculptures 4. Hardened cement layer 4a...First cement hardening layer 4b...Second cement hardening layer 4c...Third cement hardening layer 4d...Fourth cement hardening layer 6. Reinforcement 6a...First reinforcing body 6b...Second reinforcement 6c...Third reinforcement body 8...bundle 10...cover 12...wire 16...External surface 18...Inner self 20. Cement composition 20a...First Cement Composition 20b...Second cement composition 22 nozzles 24. Reinforcement 26...wire 26a...First Wire 26b...Second wire 28...bundle 30... Reinforcement 32...wire 32a...First Wire 32b...Second wire 34...bundle 36. Reinforcement 38...bundle 40...cover 42...wire 44... belt 46...cover 48...First sheet 50...Second seat 52...First Main Section 54...First right flap 56...Second left flap 58...Second Main Section 60...Second right flap 62...Second left flap 64... Reinforcement 66...bundle 68...cover 70...wire

Claims

1. A bundle containing multiple wires, and A cylindrical or ring-shaped cover into which the above bundle is inserted. A reinforcing body for cement structures, equipped with the following features.

2. The reinforcing body according to claim 1, wherein at least one wire has a curve.

3. The reinforcing body according to claim 2, comprising a first wire having a curvature and a second wire having a curvature whose phase is different from the phase of the curvature of the first wire.

4. The reinforcing body according to claim 2, comprising a first wire having a curvature and a second wire having a shape different from the curvature of the first wire.

5. The reinforcing body according to claim 1 or 2, wherein the bundle has a structure in which the wires are twisted together.

6. The above cover has numerous holes, The reinforcing member according to claim 1 or 2, wherein each hole extends from the outer surface of the cover to the inner surface of the cover.

7. The reinforcing body according to claim 1 or 2, wherein the cover is a spirally wound band.

8. The above cover, First sheet including first main section, first right flap, and first left flap and The second sheet includes the second main section, the second right flap, and the second left flap. It has, The reinforcing body according to claim 1 or 2, wherein the second right flap is joined to the first right flap, and the second left flap is joined to the first left flap.

9. The reinforcing body according to claim 8, wherein the second right flap is locally joined to the first right flap, and the second left flap is locally joined to the first left flap.

10. The reinforcing body according to claim 1 or 2, comprising a first cover and a second cover spaced apart from the first cover.

11. First cement hardened layer, The second cement hardened layer is laminated on the first cement hardened layer mentioned above. and Reinforcement embedded in the first cement hardened layer or the second cement hardened layer It is equipped with, The above reinforcing body, A bundle containing multiple wires, and A cylindrical or ring-shaped cover into which the above bundle is inserted. A cement sculpture having [a certain characteristic].

12. A: A step of extruding a reinforcing body having a bundle containing multiple wires and a cylindrical or ring-shaped cover into which this bundle is inserted, and a first cement composition. B: A process of extruding the second cement composition and laminating it onto the first cement composition. and C: A process for hardening the first cement composition and the second cement composition. A method for manufacturing cement sculptures, comprising the following features.

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