JP2006249767A - Concrete-made exterior wall surface material and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a concrete-made exterior wall surface material capable of making adhering force between a flat section of a back-up steel plate and a concrete boundary as required strength even if the back-up is made by the steel plate to become thin in the thickness and its manufacturing method. <P>SOLUTION: The concrete-made exterior wall surface material M is the concrete-made exterior wall surface material M formed by having the back-up steel plate 20, and the back-up steel plate 20 is formed by having a thermal spraying metal 24 as the same system of the quality of the material on the inner surface 20a thereof. The manufacturing method of the concrete-made exterior wall surface material M is so constituted that the back-up steel plate 20 is used to form a form F wherein a concrete C is placed after the thermal spraying metal is made on the inner surface 20a of the back-up steel plate 20 molded in a predetermined shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a concrete outer wall material and a method for producing the same. More specifically, the present invention relates to a concrete outer wall material in which a steel plate is provided as a backup of a face material, and a method for producing the same.

  Conventionally, as a concrete outer wall surface material M ′, as shown in FIG. 7, a concrete plate 10 provided with a steel plate 20 on the back surface, that is, a material obtained by backing up a face material M ′ with a steel plate 20 is known. ing. In such an outer wall surface material M ′, since the backup is made by the steel plate 20, the thickness is about 40 to 50 mm, and the portion where the backup steel plate 20 protrudes to the concrete plate 10 side is The thickness is about 30 mm. Therefore, the outer wall surface material M ′ is manufactured by placing the concrete without arranging the bar, since the normal bar cannot be arranged.

  However, since there is no bar arrangement, there is a concern that the adhesion between the flat portion 21 of the backup steel plate 20 and the concrete plate 10 interface is weak, and sufficient strength cannot be secured against the in-plane shear force during an earthquake. In addition, there is a problem that sufficient durability may not be obtained because the adhesion between the flat portion 21 of the backup steel plate 20 and the concrete plate 10 interface is weak.

  The present invention has been made in view of the problems of the prior art, and it is desired to have an adhesive force between the flat portion of the backup steel plate and the concrete interface even if the outer wall material is made of concrete and has a small thickness. It is an object of the present invention to provide a concrete outer wall material and a method for producing the same.

  As a result of diligent research on the problems of the prior art, the present inventor desired the adhesion between the flat portion of the backup steel plate and the concrete plate interface by spraying metal on the backup steel plate to moderately roughen the surface of the flat portion. As a result, the present invention has been completed.

  That is, the concrete outer wall surface material of the present invention is a concrete outer wall surface material provided with a backup steel plate, wherein the backup steel plate has a sprayed metal on its inner surface.

  In the concrete outer wall surface material of the present invention, the sprayed metal is preferably made of the same material as the backup steel plate.

  On the other hand, the method for producing a concrete outer wall material according to the present invention is a method for producing a concrete outer wall material comprising a backup steel plate, the procedure of spraying metal on the inner surface of the backup steel plate formed into a predetermined shape, It includes a procedure for forming a mold using a sprayed backup steel sheet, a procedure for placing concrete on the mold, and a procedure for curing the placed concrete.

  According to the present invention, an excellent effect that the composite yield strength of the concrete outer wall surface material can be improved by a simple technique of spraying metal on the inner surface of the backup steel plate is obtained. Moreover, since the desired proof stress can be obtained for the outer wall surface material without arranging the backup steel plate, an excellent effect that the workability is improved and the productivity is improved accordingly.

  Hereinafter, although the present invention is explained based on an embodiment, referring to an accompanying drawing, the present invention is not limited only to this embodiment.

  The principal part of the concrete outer wall surface material (henceforth only an outer wall surface material) which concerns on one Embodiment of this invention is shown with an expanded sectional view in FIG.

  As shown in FIG. 1, the outer wall surface material M includes a concrete plate 10 and a backup steel plate 20 that backs up the concrete plate 10 as main components.

  The concrete board 10 consists of various concretes, such as GRC (glass fiber reinforcement) concrete.

  The backup steel plate 20 is a mild steel plate or a stainless steel plate, and is formed into a flat groove shape by roll molding, for example, and several dovetail grooves 23 are formed on the outer surface of the bottom surface 22 in the longitudinal direction. That is, the dovetail groove 23 is formed with the bottom surface 22 protruding inward. For example, a nut for attaching the outer wall surface material M to the panel frame is attached to the dovetail groove 23. Note that the backup steel plate 20 may be formed into a box shape by bending an end portion thereof, for example.

  Further, the entire surface of the inner surface 20a of the backup steel plate 20 having a groove shape is thermally sprayed with metal to moderately roughen the surface. The adhesion effect of the concrete plate 10 to the backup steel plate 20 is improved by the anchor effect of the sprayed metal (sprayed metal) 24, thereby improving the composite strength of the outer wall surface material M. That is, a desired proof stress is obtained for the outer wall surface material M. Here, the spray metal 24 is appropriately selected according to the steel type of the backup steel plate 20. For example, if the backup steel plate 20 is a stainless steel plate, the sprayed metal 24 is also selected from the same material, that is, a stainless steel material.

  Next, the manufacture of the outer wall surface material M having such a configuration will be described with reference to FIGS.

  Procedure 1: Metal spraying is performed on the entire inner surface of the backup steel plate 20 having a groove shape by the thermal spraying machine S (see FIG. 2).

  Procedure 2: The backup steel plate 20 subjected to metal spraying is set on the surface plate J (see FIG. 3).

  Procedure 3: The open end surface of the backup steel plate 20 is closed with the template B to complete the mold F (see FIG. 4). In addition, if the backup steel plate 20 is formed in a box shape, this procedure is unnecessary.

  Procedure 4: Concrete C is placed on the formwork F formed using the backup steel plate 20 (see FIG. 5).

  Procedure 5: After predetermined curing, the end template B is removed (see FIG. 6). In addition, if the backup steel plate 20 is formed in a box shape, this procedure is unnecessary.

  By this series of procedures, the outer wall surface material M is completed.

  Thus, in this embodiment, since the metal is sprayed on the entire inner surface 20a of the backup steel plate 20 to moderately roughen the surface of the inner surface 20a, the adhesion between the backup steel plate 20 and the concrete plate 10 interface is improved. The composite yield strength of the outer wall surface material M is improved and a desired strength is obtained. Moreover, the adhesive force between the backup steel plate 20 and the concrete plate 10 interface is improved, and the durability of the outer wall surface material M is improved.

  Moreover, since a desired composite yield strength can be obtained for the outer wall surface material M without arranging bars, workability is improved and productivity is improved.

  The present invention can be applied to various concrete outer wall materials provided with a backup steel plate.

It is a principal part expanded sectional view of the concrete outer wall surface material which concerns on one Embodiment of this invention. It is explanatory drawing of the process in the manufacturing method of the concrete outer wall surface material of this invention, Comprising: The state which is thermally spraying the metal to the backup steel plate is shown. It is the same explanatory drawing, and shows the state which set the backup steel plate to the surface plate. It is the explanatory drawing, Comprising: The state which completed the formwork is shown. It is the same explanatory drawing, Comprising: The state which has poured concrete into the formwork is shown. It is the same explanatory drawing, and shows the state which removed the template of the edge part after curing. It is a figure equivalent to FIG. 1 of the conventional concrete outer wall surface material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Concrete board 20 Backup steel plate 20a Inner surface 21 Flat part 22 Bottom 23 Dovetail 24 Thermal spray metal B Type plate F Formwork J Surface plate S Thermal spray machine M Outer wall surface material

Claims (3)

  A concrete outer wall surface material comprising a backup steel plate, wherein the backup steel plate has a sprayed metal on its inner surface.   The concrete outer wall material according to claim 1, wherein the sprayed metal is made of the same material as the backup steel plate. A method for producing a concrete outer wall material comprising a backup steel plate,
A procedure for spraying metal on the inner surface of a backup steel sheet formed into a predetermined shape;
A procedure for forming a formwork using a backup steel plate sprayed with metal,
A procedure for placing concrete in the formwork;
A method for producing a concrete outer wall material, comprising: curing a placed concrete.

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