JPH0832409B2 - Manufacturing method of building members - Google Patents

Description

The present invention relates to a method for manufacturing a building member such as a wall or floor.

(Prior Art) Conventionally, in this type of method, a mold is made on site using plywood, metal panels, glass fiber reinforced plates, etc. according to the shape of the required member, and concrete is poured into the mold. As a formwork, a half-PC board with a part of the assembled rebar protruding
The method of pouring concrete or spraying concrete, mortar, etc. on the same half PC plate form was used.

(Problems to be solved by the invention) However, a mold made of plywood metal panel needs to be dismantled and removed after hardening of concrete, and the concrete surface after demolding generally has many air bubbles etc. The groundwork had to be applied to carry out the construction.

Further, the mold using the glass fiber reinforced plate does not need to be removed from the mold after the concrete is hardened, but it is difficult to mold it beforehand in a factory or the like depending on the shape of the required member.

Formwork using concrete or mortar requires thick members because of the poor flowability of concrete and mortar and the low bending strength.
Therefore, the weight is increased, and there is a problem in transportation, installation, and the like.

The present invention has been proposed in view of the above problems of the prior art, and uses a panel having an extremely small member thickness and high structural reliability to manufacture curved members and other members having complicated shapes. The point is to provide a method for manufacturing a building member that makes it possible.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the method for producing a building member according to the present invention comprises mixing cement powder, a heat-crosslinkable melamine resin, an aggregate, an admixture, and water and stirring them. It has a rice cake-like viscosity,
Assemble a panel with a protrusion for concrete anchoring on the surface of the panel body molded from a cement mixture with high strength and high elastic modulus, and pour on-site concrete using the panel as a driving form. It is configured to be integrated with the panel.

(Function) According to the present invention, as described above, the cement powder, the heat-crosslinking melamine resin, the aggregate, the admixture, and the rice cake-like viscosity obtained by mixing and stirring water have high strength and high elastic modulus. Since the panel main body is molded with the cement admixture containing, it is possible to construct a panel having a small member thickness and a curved surface or other complicated cross-sectional shape.

Further, according to the present invention, a panel is formed by providing a protrusion for fixing concrete on the surface of the panel body, and the panel is assembled, and the in-situ concrete is cast by using the panel as a casting form to project the protrusion. A construction member in which the same pouring concrete and the panel are integrated via a section is manufactured.

(Examples) The present invention will be described below with reference to illustrated examples.

Using cement powder, heat-crosslinkable melamine resin, aggregate, admixture, biaxial mixer having high shearing ability for water,
When the cement mixture obtained by mixing and stirring is vibrated until the material becomes highly viscous, a dough-like fluidity occurs.

The concrete thus obtained has high strength and high elastic modulus which cannot be obtained by conventional concrete, tensile strength is 60 to 300 kgf / cm ² , and compressive strength is 700 to 1,000 kgf / c.
It becomes a cured product with m ² and a static elastic modulus of 250,000 to 350,000 kgf / cm ² .

The details of the method for producing the cement mixture are described in JP-A-62-182144 proposed by the present applicant.

Then, the cement mixture (1) obtained as described above is placed on a metal plate (3) on which hook-shaped concrete and projections (2) (2 ') for fixing are projected from both front and back surfaces. A panel (in which the metal plate (3) and the cement mixture (1) are integrated through a hook-shaped protrusion (2) and the protrusion (2 ′) is protruded from the surface ( Mold A). (See FIG. 1) Then, the panel (A) is arranged at the wall body construction position, the wall reinforcing bar (4) is arranged inside the panel (A), and the cast-in-place concrete (5) is poured. The wall (W) integrated with the panel (A) is constructed by installing or spraying mortar.

(Refer to Fig. 2) Conventionally, a method of placing concrete on a semi-PC board with a part of the assembled rebar protruding or spraying mortar to build the outer wall has been performed, but it was sprayed on the concrete surface. There are problems that there is a lot of concrete rebound and that it is difficult for concrete and mortar to get behind the reinforcing bars. However, according to this method, the rebound of the concrete sprayed on the surface of the metal plate (3) is achieved by closely disposing the hook-shaped protrusions (2) (2 ') protruding from the metal plate (3). In addition, by spraying the cement mixture (1) which has a mochi-like viscosity, concrete or mortar can be sufficiently spread around the back side of the reinforcing bar (4) and the back side of the hook-shaped protrusion, and the strength can be increased. Panel can be configured.

FIG. 3 and FIG. 4 show another embodiment of the present invention, in which the cement is applied to a mold having a curved metal plate (3) having hook-like protrusions (2) protruding from both sides thereof. Admixture (1)
(See FIG. 3), concrete (5) or mortar was applied to the metal plate surface of the panel (A) of the composite structure in which the cement mixture (1) and the metal plate (3) were integrated. Drive or spray to make curved roof panels (R). (Refer to FIG. 4) FIG. 5 shows another embodiment of the present invention, which uses a metal plate (3 ′) in the form of a deck plate having hook-like protrusions (2) on both front and back sides, Similarly, concrete (5) or mortar is driven into or sprayed on a panel (A) in which the cement mixture (1) is integrally layered on the lower surface of the metal plate (3 '), (A)
The roof member (R ') is manufactured by integrating it with the hook-shaped protrusion (2').

FIG. 6 shows another embodiment of the present invention, in which (A) is a panel for pillar construction, and an inner wall frame for producing the panel is previously made of synthetic resin fiber with an easily decomposable polymer glue (Lester). A mesh (7) made of carbon fiber metal wire or the like is pasted, the cement mixture (1) is cast, and after curing, washed with water and a part of the mesh (7) is placed on the concrete placement surface. Is exposed,
In addition, a pillar construction panel (A) having a sectional shape obtained by dividing the pillar section into two is molded.

The both panels (A) are assembled so that the column reinforcing bars (8) are sandwiched at the site, and then concrete is placed in both panels (A) to construct the columns. At this time, the mesh (7) partially exposed on the concrete placing surface of the panel (A) integrates the panel (A) and the placing concrete.

If necessary, a finishing material (9) is applied to the outer surface of the panel (A).

FIG. 7 shows another embodiment of the present invention. FIG. 7A is a beam construction panel made of the cement admixture molded in the same manner as in FIG. 6, and has a mesh (not shown) on its inner surface. )
Part of is exposed.

After installing the beam rebar (10) in the panel (A), the panel (A) is set at a predetermined position, or the panel (A) is set at a predetermined position and then the beam rebar (10) is set. And beam concrete is placed.

 (11) in the figure is a beam steel frame.

The embodiment shown in FIG. 8 is divided vertically into two panels, and a panel (A ₁ ) (A ₁ ) constituting a wall form molded from a cement admixture in the same manner as in each of the above embodiments, and Divided into two,
Moreover, a panel (A ₂ ) (A ₂ ) in which both the beam and the wall formwork made of the cement mixture are continuously provided, and the panels (A ₁ ) (A ₁ ) and (A ₂ ) (A ₂ ) between the wall reinforcement (12) and the beam reinforcement (13), and the beam and wall concrete are placed. The mesh is omitted in the figure.

FIG. 9 shows an embodiment in which the present invention is applied to a parapet formwork. A panel is provided with an opening for concrete placing in the upper part, and the weir plates on both left and right sides molded from the concrete mixture are integrated or divided. After building (A), concrete (5) is poured and a parapet (P) is constructed. A waterproof sheet (14) is provided if necessary.

10 and 11 show a connecting device for a panel (A) molded from the cement admixture (1), and a joint embedded in each cement admixture (1) of the adjacent panel (A). A plate-like joining metal fitting (16) is attached between the jigs (15) on the front surface side or the back surface side of the panel as needed, and is tightly connected with the tight fitting metal fitting (17) to connect the adjacent panels (A).

(Effect of the Invention) As described above, the present invention has a rice cake-like viscosity obtained by mixing and stirring cement powder, a heat-crosslinkable melamine resin, an aggregate, an admixture, and water, and has high strength and a high elastic modulus. Since the cement admixture that they have was used to mold panels for manufacturing and construction of building members, it is possible to mold thin-walled and curved panels and other panels with complicated cross-sectional shapes. Manufacture and construction are possible.

Since the concrete fixing projection is provided on the surface of the panel, the post-cast concrete is integrated with the panel by placing the panel as a driving form in the assembly space of the panel. It is a thing.

According to the invention of claim 2, in molding the panel, a reinforcing material provided with hook-shaped projections on both front and back surfaces of a metal plate is used as a formwork, and the cement mixture is cast on the surface of the reinforcing material. The cement admixture and the reinforcing material are integrated through a projection on one side of the reinforcing material, and the projection on the other side of the reinforcing material protruding from the panel is intended to integrate the panel and the post-cast concrete. .

According to the invention of claim 3, at the time of molding the panel, the cement mixture is cast into a mold in which a mesh made of synthetic resin fiber, metal wire or the like is adhered to the concrete casting surface, The cement admixture is reinforced and the panel and post-cast concrete are integrated by a part of the mesh exposed from the surface of the cement admixture.

According to the invention of claim 4, the metal plate reinforcing material in the panel is sprayed with the mortar of the cement admixture, so that the hook-shaped projection protruding from the reinforcing material or the back side of the reinforcing bar arranged in the panel is provided. The mortar also wraps around
Strong and reliable building materials are manufactured.

[Brief description of drawings]

1 and 2 are cross-sectional plan views showing the steps of one embodiment of the method for manufacturing a building member according to the present invention, and FIGS. 3 and 4 are vertical cross-sections showing the steps of another embodiment of the present invention. 5 and FIG. 5 are longitudinal sectional views showing an implementation state of another embodiment of the present invention, and FIGS. 6 and 7 and FIG. 8 are perspective views showing an implementation state of each other embodiment of the present invention. FIG. 9 is a longitudinal sectional view showing an embodiment of still another embodiment of the present invention, FIG. 10 is a cross-sectional plan view showing a panel connecting portion, and FIG. 11 is a perspective view thereof. (A) ... panel, (1) ... cement admixture, (2) ... projection, (3) ... metal plate, (5) ... concrete.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Kenji Sugimoto 1-25-1 Nishishinjuku, Shinjuku-ku, Tokyo Within Taisei Corporation (72) Inventor Haruhiko Takamura 861 Yamanaka, Yamanakako, Minamitsuru-gun, Yamanashi Invention Eiichi Watanabe 204 Shimoyoshida, Fujiyoshida City, Yamanashi Prefecture

Claims (4)

[Claims] 1. A rice cake-like viscosity obtained by mixing and stirring cement powder, a heat-crosslinkable melamine resin, an aggregate, an admixture, and water,
Assemble a panel with a protrusion for concrete anchoring on the surface of a panel body molded from a cement mixture having high strength and high elastic coefficient, and pour on-site concrete using the panel as a driving form. A method of manufacturing a building member, characterized by being integrated with a panel. 2. A panel integrated with a reinforcing material made of a metal plate, the reinforcing material having hook-shaped projections protruding therefrom is used as a formwork, and the cement mixture is cast on the surface of the reinforcing material. The method for manufacturing a building member according to claim 1, wherein the building member is molded. 3. A high-strength cement admixture is cast on a formwork made by adhering a mesh made of synthetic resin fibers, metal filaments or the like on a concrete casting surface, and one of the meshes is placed on the surface. The method for manufacturing a building member according to claim 1, wherein a panel having a protruding portion is molded. 4. The method for producing a building member according to claim 2, wherein the high-strength cement admixture mortar is sprayed on the metal plate reinforcing material of the panel.