JP2012136885A - Method for manufacturing autoclaved lightweight concrete panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing an autoclaved lightweight concrete panel, which can effectively prevent a rustproof coated film of reinforcing bar structure from causing a loss and which enables the manufacture of a high-quality panel.SOLUTION: A method for manufacturing an autoclaved lightweight concrete (ALC) panel comprises a reinforcing bar structure forming step of forming reinforcing bar structure 5A by disposing a reinforcing bar mat 7 and a net-like reinforcement member 9 in an opposed state and connecting the reinforcing bar mat 7 and the net-like reinforcement member 9 together in a separated state via a π-shaped attachment member 11. Since the reinforcing bar mat 7 and the net-like reinforcement member 9 are separated from each other, a rustproof coated film is formed almost throughout a surface of the reinforcing bar structure 5A when rustproofing treatment is applied to the reinforcing bar structure 5A. Thus, since stress is applied to the reinforcing bar structure 5A during the expansion and hardening of material slurry, the rustproof coated film does not cause a loss, for example, even when a separation interval between the reinforcing bar mat 7 and the net-like reinforcement member 9 is changed. This enables the manufacture of a high-quality ALC panel 1.

Description

  The present invention relates to a method of manufacturing a lightweight cellular concrete panel in which a reinforcing bar mat having main bars and auxiliary bars and a net-like reinforcing member such as a metal lath are embedded.

  2. Description of the Related Art Conventionally, there has been proposed a structure in which a reinforcing bar structure including a reinforcing bar mat composed of main and auxiliary bars and a net-like reinforcing member such as a metal lath is embedded in a lightweight cellular concrete panel (hereinafter referred to as “ALC panel”).

  ALC panels used for building walls, floors or roofs often have large and small through holes and openings for facilities such as water supply and drainage, air conditioning and ventilation. On the other hand, in the interior of the ALC panel, a large number of main bars and auxiliary bars are embedded in order to develop the bending strength of the panel, and reinforcing bar mats provided with main bars and auxiliary bars by drilling through holes for equipment piping If it is cut, there is a risk that the panel bending strength may be lowered. Therefore, it is difficult to provide a large number or large holes at arbitrary positions. An ALC panel that solves this problem is proposed in Japanese Patent Application Laid-Open No. 2010-59715.

  Japanese Patent Application Laid-Open No. 2010-77624 proposes an ALC panel that solves the problem that chipping is likely to occur when perforating or notching the outer edge of the reinforcing bar mat of the ALC panel. Yes.

  In order to solve the problem that the base material on the back side is peeled off when the drill blade is cut through when drilling the ALC panel, an ALC panel in which a reinforcing mesh made of reinforcing bars is stretched with a wire mesh is disclosed in Japanese Utility Model Laid-Open No. 6-077842. Has been proposed.

  In order to further enhance the design and durability of the ALC panel, the surface is covered with a cover plate such as a decorative plate. In that case, the storage and transportation are not hindered, and the construction is performed. Japanese Patent Laid-Open No. 6-114822 has proposed an ALC panel devised to significantly reduce the man-hours and time required.

  It is assumed that the reinforcing bar structure used for the ALC panel described above is manufactured by directly contacting and fixing a mesh reinforcing member to a reinforcing bar mat composed of a main bar and a secondary bar. The two members can be welded together, or a part of the net-like reinforcing member, or the two members can be joined together using another member.

  The ALC panel is manufactured by forming a reinforcing bar structure, surrounding the reinforcing bar structure with a raw slurry of lightweight cellular concrete, and further foam-curing the raw material slurry. Here, the reinforcing bar structure needs rust prevention treatment to prevent rusting. Therefore, in the manufacturing process of the ALC panel, the reinforcing bar structure is subjected to rust prevention treatment before the reinforcing bar structure is surrounded by the raw material slurry. This rust prevention treatment is generally performed by immersing the reinforcing bar structure completely in an immersion tank filled with the rust prevention liquid, attaching the rust prevention liquid to the surface of the reinforcing bar structure, and drying it. It is executed by forming a rust-proof coating film having a thickness.

JP 2010-59715 A JP 2010-77624 A Japanese Utility Model Publication No. 6-078432 JP-A-6-114822

  In the reinforcing bar structure used in the conventional ALC panel, the reinforcing bar mat and the net-like reinforcing member are in contact with each other and partially fixed by welding or the like. In this type of reinforcing bar structure, a rust-proof coating film is not substantially formed at the contact portion between the two. Here, in the manufacturing process of the ALC panel, when the above-mentioned raw material slurry is foam-cured, stress is applied to the reinforcing bar structure from the outside, the contact part is partially separated, and the anticorrosive coating film may be damaged. There is sex. On the other hand, in order to prevent the loss of the anticorrosive coating, measures such as performing welding on the entire surface of the contact part or fastening the substantially whole can be considered. This results in an increase in the number of processes and an increase in cost, which is not practical.

  The present invention aims to solve the above-mentioned problems, and can effectively prevent defects generated in a rust-preventing coating film having a reinforcing bar structure, and a method for producing a lightweight cellular concrete panel that enables the production of a high-quality panel. The purpose is to provide.

  The present invention relates to a lightweight cellular concrete panel manufacturing method in which a reinforcing bar structure provided with a reinforcing bar mat is surrounded by a raw material slurry in a panel shape, and the raw material slurry is foamed and cured. A reinforcing bar structure forming step of forming a reinforcing bar structure by arranging the reinforcing bar and the mesh reinforcing member in a separated state through the mounting member while arranging the reinforcing member to face each other. .

  In the present invention, the reinforcing bar mat and the mesh-like reinforcing member are joined together with the attachment member interposed therebetween, and as a result, the reinforcing bar structure is formed. That is, in the present invention, as a premise, since the reinforcing bar mat and the net-like reinforcing member are separated from each other, a rust-preventing coating film is formed over substantially the entire surface of the reinforcing bar structure when the rust-proofing process is performed. Therefore, stress is applied to the reinforcing bar structure when the raw material slurry is foam-cured. For example, even if the separation width between the reinforcing bar mat and the net-like reinforcing member is changed, the rust preventive coating film is not lost. Therefore, according to the present invention, it is possible to effectively prevent the rust preventive coating film having the reinforcing bar structure from being lost, and it is possible to manufacture a high-quality lightweight cellular concrete panel.

  And in this invention, you may provide the rust prevention process which immerses a reinforcing bar structure in a rust prevention liquid and performs a rust prevention process.

  Furthermore, the mounting member according to the present invention includes a support portion that is passed through the mesh of the mesh reinforcement member and abuts against the mesh reinforcement member, and a gap that is erected on the support portion and that corresponds to the thickness of the mesh reinforcement member. In the reinforcing bar structure forming step, the attachment member is passed through the mesh of the mesh reinforcement member, and the support portion is mesh-reinforced while the mesh reinforcement member is sandwiched between the pair of sandwich portions. It is preferable to connect the reinforcing bar mat and the mesh reinforcing member in a separated state by supporting the mesh reinforcing member by contacting the member and fixing the support portion to the reinforcing bar mat.

  Further, the mounting member according to the present invention includes a locking portion bent in a V shape, and a pair of arms protruding from both ends of the locking portion and facing each other on the same axis across the locking portion. In the reinforcing bar structure forming step, the attachment member is passed through the mesh of the mesh reinforcing member, the mesh reinforcing member is supported by the locking portion, and the arm portion is fixed to the reinforcing rod mat, It is preferable that the reinforcing bar mat and the net-like reinforcing member are coupled in a separated state.

  ADVANTAGE OF THE INVENTION According to this invention, the defect | deletion which arises in the rust prevention coating film of a reinforcement reinforcement structure can be prevented effectively, and a high quality lightweight cellular concrete panel can be manufactured.

It is a top view of the lightweight cellular concrete panel manufactured by the manufacturing method concerning a 1st embodiment of the present invention. It is sectional drawing along the II-II line of FIG. It is a perspective view which expands and shows the site | part which couple | bonds a reinforcing bar mat and a mesh-shaped reinforcement member in the state spaced apart via the attachment member. The reinforcement reinforcement formation process of the manufacturing method which concerns on 1st Embodiment is shown, (a) is a perspective view which shows the state which has arrange | positioned the mesh reinforcement member between a pair of reinforcement reinforcement mats, (b) is a reinforcement reinforcement mat. FIG. 6 is a perspective view showing a state in which a mesh reinforcement member is disposed opposite to the reinforcement reinforcement mat and the mesh reinforcement member are coupled via an attachment member. In the lightweight cellular concrete panel manufactured by the manufacturing method which concerns on 2nd Embodiment of this invention, the perspective view which expands and shows the site | part which couple | bonds a reinforcement reinforcement mat and a mesh-shaped reinforcement member in the state spaced apart via the attachment member. It is.

Preferred embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)

  First, a lightweight cellular concrete (hereinafter referred to as “ALC”) panel 1 manufactured by the manufacturing method according to the first embodiment will be described with reference to FIGS.

  As shown in FIGS. 1 and 2, the ALC panel 1 includes a panel main body 3 formed into a rectangular plate shape by ALC and a reinforcing bar structure 5 </ b> A embedded in the panel main body 3. The reinforcing bar structure 5 </ b> A includes a pair of reinforcing bar mats 7 and a net-like reinforcing member 9 disposed between the pair of reinforcing bar mats 7 so as to be separated from the reinforcing bar mat 7.

  The reinforcing bar mat 7 intersects (perpendicular to) the two parallel main bars 7 a extending along the longitudinal direction of the panel body 3 and the main bar 7 a, and extends along the short direction of the panel body 3. And five accessory muscles 7b. The pair of reinforcing bar mats 7 are arranged in parallel along the panel surface of the panel body 3.

  Of the five accessory bars 7 b of the reinforcing bar mat 7, the two accessory bars 7 b are desirably arranged in the vicinity of both ends in the longitudinal direction of the panel body 3. By disposing the secondary muscles 7b at both longitudinal ends of the panel body 3, the main muscles 7a are sufficiently fixed to the panel body 3 made of ALC, and the attachment strength of the fastener attached to the end of the ALC panel 1 is increased. Can be secured.

  The mesh reinforcing member 9 is a planar mesh member made of metal lath, wire lath, or the like, and a wire mesh, lath mesh, expanded metal, or the like can be used. For example, the wire diameter of the iron wire used for the wire mesh and the thickness of the lath mesh or the expanded metal may be determined in consideration of the reinforcing effect and workability at the time of drilling, and about 0.6 mm to 1.2 mm. preferable. The size of the mesh may be determined in consideration of the adhesion of the mesh reinforcing member 9 to the panel body 3 (ALC base material) or the interval between the through holes and the openings, and is preferably about 10 mm to 60 mm.

  When the mesh reinforcing member 9 is a lath mesh, flat laths such as No. 3 and 4 or corrugated laths such as No. 1 and 2 can be employed. The size of the mesh (mesh) in the mesh direction is 26 mm to 32 mm (the major axis of the rhombus), and the size of the mesh (mesh) in the minor direction is 13 mm to 16 mm.

  The net-like reinforcing member 9 is sandwiched between the pair of reinforcing bar mats 7 and is spaced from the reinforcing bar mats 7 with a certain distance Da, Db (see FIG. 2) between them. Opposed.

  The reinforcing bar structure 5A includes a mounting member 11 that joins the reinforcing bar mat 7 and the net-like reinforcing member 9 with a predetermined distance Da, Db, and further, a reinforcing bar is provided at the upper end of the reinforcing bar structure 5A. A suspension spacer (not shown) is fixed.

  The attachment member 11 (see FIG. 2 and FIG. 3) is a substantially π-shaped member (hereinafter referred to as “π-type attachment member”) 11, and is passed through the mesh 9 a of the mesh reinforcement member 9. And a pair of rod-shaped sandwiching portions 11b that are provided upright on the support portion 11a and arranged with a gap d corresponding to the thickness of the mesh-like reinforcing member 9.

  The π-type attachment member 11 supports the mesh reinforcing member 9 by supporting the mesh reinforcing member 9 with the support portion 11a contacting the mesh reinforcing member 9 between the pair of sandwiching portions 11b. The pair of sandwiching portions 11b The mesh-like reinforcing member 9 is held so as to be sandwiched between the two. Further, both ends of the support portion 11a are in contact with and welded to the main bars 7a of the pair of reinforcing bar mats 7. In addition, although this embodiment demonstrates the aspect in which the support part 11a of the (pi) type attachment member 11 was fixed to the main reinforcement 7a of the reinforcing bar mat 7, you may fix to the auxiliary reinforcement 7b.

  Next, a method for manufacturing the ALC panel 1 according to the first embodiment will be described with reference to FIGS. 3 and 4. In the present embodiment, eight π-type attachment members 11 are used, and the π-type attachment members 11 are arranged at four places above and four places below the reinforcing bar structure 5A. The number of π-type attachment members 11 in the longitudinal direction of the ALC panel 1 and the frequency of the layout, for example, prevent contact between the reinforcing bar mat 7 and the mesh reinforcing member 9 during the rust prevention treatment of the reinforcing bar structure 5A. Any change can be made as long as possible, and there is no particular limitation. In addition, the number of π-type mounting members 11 in the short direction of the ALC panel 1 and the frequency of layout, etc., for example, contact between the reinforcing bar mat 7 and the mesh reinforcing member 9 during the rust prevention treatment of the reinforcing bar structure 5A. Any change can be made as long as it can be prevented, and there is no particular limitation.

  The manufacturing method according to the present embodiment includes a reinforcing bar structure forming step, a rust prevention step, a foam hardening step of raw material slurry, a mortar block cutting step, and a curing step.

  In the reinforcing bar structure forming step, the reinforcing bar mat 7 and the net-like reinforcing member 9 are arranged opposite to each other, and the reinforcing bar mat 7 and the net-like reinforcing member 9 are joined with being spaced apart via the π-type mounting member 11. The reinforcing bar structure 5A is formed.

  Specifically, the π-type attachment member 11 is inserted through the mesh 9a of the mesh reinforcement member 9, and the π-type attachment member 11 is inserted to a position where the mesh reinforcement member 9 is sandwiched between the pair of sandwiching portions 11b. Next, the π-type attachment member 11 is lifted so that the support portion 11a is brought into contact with the mesh-like reinforcement member 9, and the mesh-like reinforcement member 9 is supported by the π-type attachment member 11 so that the support portion 11a is hooked on the mesh-like reinforcement member 9. . As a result, the mesh reinforcing member 9 is held at a fixed position of the π-type mounting member 11.

  Next, the pair of reinforcing bar mats 7 are arranged so as to face each other with the mesh reinforcing member 9 interposed therebetween. In this state, the reinforcing bar mats 7 are separated from the mesh reinforcing member 9 and are opposed to the mesh reinforcing member 9. Eight π-type mounting members 11 are arranged at a fixed position of the net-like reinforcing member 9. Both ends of the support portion 11a of the π-type attachment member 11 are in contact with the main bar 7a of the reinforcing bar mat 7 and are welded to the main bar 7a.

  The mesh reinforcing member 9 is held at a fixed position by the sandwiching portion 11b and the support portion 11a of the π-type attachment member 11, and the mesh reinforcement member 9 is formed into a pair of left and right reinforcing bar mats 7 via the π-type attachment member 11. By fixing, a reinforcing bar structure 5 </ b> A in which the mesh reinforcing member 9 is separated from the pair of reinforcing bar mats 7 is completed.

  Next, the rust prevention process which performs the rust prevention process of 5 A of reinforcement reinforcement structures is performed. In the rust prevention step, the reinforcing bar structure 5A is completely immersed in an immersion tank filled with the rust prevention liquid, and the rust prevention liquid is attached to the surface of the reinforcing bar structure 5A. Here, since the reinforcing bar mat 7 and the net-like reinforcing member 9 are arranged apart from each other, the rust preventive liquid is attached to the entire surface of the reinforcing bar mat 7 and the net-like reinforcing member 9. After adhering the rust preventive liquid, the reinforcing bar structure 5A is dried to form a rust preventive coating film.

  Next, a foam curing step of the raw material slurry is performed. The reinforcing bar mat 7 on which the rust preventive coating film is formed is disposed in the mold. In this formwork, a raw material slurry in which a calcareous raw material and a siliceous raw material are crushed, an appropriate amount of water, a foaming agent and the like is mixed is injected, and the reinforcing bar structure 5A is surrounded in a panel shape, foamed and cured, and mortar Form a block.

  After the foam-cured mortar block is formed, the mortar block is cut into a desired dimension with a piano wire or the like (a mortar block cutting step) and subjected to autoclave curing (curing step) to complete the ALC panel 1 having a predetermined shape. .

  Next, the operation and effect of the manufacturing method according to this embodiment will be described. In this manufacturing method, as a premise, since the reinforcing bar mat 7 and the net-like reinforcing member 9 are separated from each other, a rust-preventing coating film is formed over substantially the entire surface of the reinforcing bar structure 5A when the rust-proofing process is performed. The Therefore, stress is applied to the reinforcing bar structure 5A when the raw material slurry is foam-cured, and for example, even if the separation width between the reinforcing bar mat 7 and the net-like reinforcing member 9 is changed, the rust preventive coating film is not lost. Therefore, according to the manufacturing method which concerns on this embodiment, the defect | deletion of the rust prevention coating film of 5 A of reinforcement reinforcement structures can be prevented effectively, and manufacture of the high quality ALC panel 1 is attained.

  In particular, according to the manufacturing method according to the present embodiment, for example, compared with an aspect in which the entire surface of the reinforcing bar mat and the net-like reinforcing member is fixed by welding or the like to prevent the rust-preventing coating from being damaged, In addition, it is possible to completely solve the concerns related to the above, and at the same time, it is possible to suppress an increase in manufacturing man-hours and to suppress an increase in manufacturing cost.

  In the above embodiment, the coupling between the π-type mounting member 11 and the reinforcing bar mat 7 is performed by welding. However, if sufficient fixing strength is obtained, the bonding is not limited to welding, but may be performed by adhesion or the like. There may be. The π-type attachment member 11 and the reinforcing bar mat 7 can be fixed to either the main bar 7a or the auxiliary bar 7b of the reinforcing bar mat 7, but at the time of the rust prevention treatment, In order to ensure the frequency with which the contact with the mesh reinforcing member 9 can be prevented, it is desirable to fix it to the main reinforcement 7a.

  Further, in the present embodiment, the mesh reinforcing member 9 is only caught on the π-type mounting member 11 and is not particularly welded, but may be firmly fixed by welding or the like.

  Further, the length of the sandwiching portion 11b of the π-type attachment member 11 is not particularly limited as long as it can be passed through the mesh 9a of the mesh reinforcing member 9 and the mesh reinforcing member 9 can be sufficiently sandwiched. Absent. Further, the position of the sandwiching portion 11 b with respect to the support portion 11 a of the π-type mounting member 11 can be arbitrarily changed according to the position of the mesh reinforcing member 9 in the thickness direction of the ALC panel 1.

  Further, among the coupling positions of the reinforcing bar mat 7 and the net-like reinforcing member 9 by the π-type mounting member 11, construction is performed with the sandwiched portion 11 b of the π-type mounting member 11 facing upward at the upper coupling position. In the coupling position existing in the structure, it is more preferable to construct the sandwiching portion 11b of the π-type attachment member 11 downward so that a problem that the mesh reinforcing member 9 is not fixed due to vibration or the like can be prevented.

Further, in this embodiment, a net-like reinforcing member 9 that overlaps substantially the entire surface of the reinforcing bar mat 7 is prepared, and the net-like reinforcing member 9 is fixed to the reinforcing bar mat 7. However, the present invention is not limited to this form. The portion for fixing the mesh reinforcing member 9 may be only a required portion of the reinforcing bar mat 7. Further, two or more main bars 7a of each reinforcing bar mat 7 may be arranged in parallel to the longitudinal direction of the ALC panel 1, and three or more of the auxiliary bars 7b are arranged in parallel to the short direction of the ALC panel 1. You may set up.
(Second Embodiment)

  Next, a manufacturing method according to the second embodiment of the present invention will be described with reference to FIG. The ALC panel 1 manufactured by the manufacturing method according to the present embodiment has substantially the same structure and elements as the ALC panel 1 manufactured by the manufacturing method according to the first embodiment. Accordingly, the same structures and elements are denoted by the same reference numerals as those of the ALC panel 1 according to the first embodiment, and detailed description thereof is omitted. Moreover, since each process of the manufacturing method includes the same process as the manufacturing method according to the first embodiment, detailed description of the same process is omitted.

  The manufacturing method according to the present embodiment differs from the manufacturing method according to the first embodiment in the attachment member 21 used for connecting the reinforcing bar mat 7 and the mesh reinforcing member 9.

  The attachment member 21 is a substantially V-shaped member (hereinafter referred to as “V-shaped attachment member”) 21, and protrudes from both ends of the engagement portion 21 a bent into a V shape and the engagement portion 21 a, and the engagement portion And a pair of arm portions 21b disposed opposite to each other on the same axis L with 21a interposed therebetween.

  The V-shaped attachment member 21 supports the mesh reinforcing member 9 by holding the mesh reinforcing member 9 so that the locking portion 21a sandwiches the mesh reinforcing member 9, and holds it in a fixed position. Further, both ends of the arm portion 21b are in contact with and welded to the main bar 7a of the pair of reinforcing bar mats 7. In addition, although this embodiment demonstrates the aspect in which the latching | locking part 21a of the V-shaped attachment member 21 was fixed to the main reinforcement 7a of the reinforcement reinforcement mat 7, you may fix to the accessory reinforcement 7b.

  In the manufacturing method according to the present embodiment, eight V-shaped attachment members 21 are used, and the attachment members 21 are arranged at four places above and four places below the reinforcing bar structure 5B. The number of V-shaped attachment members 21 in the longitudinal direction of the ALC panel 1 and the frequency of the layout, for example, prevent contact between the reinforcing bar mat 7 and the mesh reinforcing member 9 during the rust prevention treatment of the reinforcing bar structure 5B. Any change can be made as long as possible, and there is no particular limitation. In addition, the number of V-shaped attachment members 21 in the short direction of the ALC panel 1 and the frequency of the layout, for example, can be determined by the contact between the reinforcing bar mat 7 and the net-like reinforcing member 9 during the rust prevention treatment of the reinforcing bar structure 5B. Any change can be made as long as it can be prevented, and there is no particular limitation.

  The manufacturing method according to the present embodiment includes a reinforcing bar structure forming step, a rust prevention step, a foam hardening step of raw material slurry, a mortar block cutting step, and a curing step. Since the antirust process, the foam hardening process of the raw material slurry, the cutting process of the mortar block, and the curing process are the same as those in the manufacturing method according to the first embodiment, detailed description thereof is omitted.

  In the reinforcing bar structure forming step, the V-shaped attachment member 21 is passed through the mesh 9a of the mesh reinforcing member 9, and the V-shaped attachment member 21 is inserted to a position where the mesh reinforcing member 9 is supported by the locking portion 21a. Next, the V-shaped attachment member 21 is lifted so that the locking portion 21 a is brought into contact with the mesh-shaped reinforcing member 9, and the mesh-shaped reinforcing member 9 is moved by the V-shaped mounting member 21 so that the locking portion 21 a is hooked on the mesh-shaped reinforcing member 9. To support. As a result, the mesh reinforcing member 9 is held at a fixed position of the V-shaped attachment member 21.

  Next, the pair of reinforcing bar mats 7 are arranged so as to face each other with the mesh reinforcing member 9 interposed therebetween. In this state, the reinforcing bar mats 7 are separated from the mesh reinforcing member 9 and are opposed to the mesh reinforcing member 9. Eight V-shaped attachment members 21 are arranged at fixed positions of the net-like reinforcing member 9. The arm part 21b of the V-shaped attachment member 21 is placed so that both end portions thereof are in contact with the main bar 7a of the reinforcing bar mat 7, and the arm part 21b and the main bar 7a are fixed by welding or the like.

  The mesh reinforcing member 9 is held in place by the locking portion 21 a of the V-shaped attachment member 21, and the mesh reinforcement member 9 is fixed to the pair of left and right reinforcing bar mats 7 via the V-shaped attachment member 21. Then, the reinforcing bar structure 5B in which the net-like reinforcing member 9 is coupled with being separated from the pair of reinforcing bar mats 7 is completed.

  In the manufacturing method according to the present embodiment, as a premise, since the reinforcing bar mat 7 and the net-like reinforcing member 9 are separated from each other, the antirust coating is applied over the substantially entire surface of the reinforcing bar structure 5B when the antirust process is performed. A film is formed. Therefore, stress is applied to the reinforcing bar structure 5B when the raw material slurry is foam-cured, and, for example, even if the separation width between the reinforcing bar mat 7 and the net-like reinforcing member 9 is changed, the rust preventive coating film is not lost. Therefore, according to the manufacturing method which concerns on this embodiment, the defect | deletion of the anticorrosion coating film of the reinforcing bar structure 5B can be prevented effectively, and manufacture of the high quality ALC panel 1 is attained.

  In particular, according to the manufacturing method according to the present embodiment, for example, compared with an aspect in which the entire surface of the reinforcing bar mat and the net-like reinforcing member is fixed by welding or the like to prevent the rust-preventing coating from being damaged, Concerns about the problem can be solved completely, and at the same time, an increase in the number of manufacturing steps can be suppressed, and an increase in manufacturing cost can also be suppressed.

  In the above embodiment, the V-shaped attachment member 21 and the reinforcing bar mat 7 are joined by welding. However, if a sufficient fixing strength is obtained, the connection is not limited to welding, and adhesion or the like. It may be. The V-shaped attachment member 21 and the reinforcing bar mat 7 can be fixed to either the main bar 7a or the auxiliary bar 7b of the reinforcing bar mat 7, but at the time of the rust prevention treatment, In order to ensure the frequency with which the contact with the mesh reinforcing member 9 can be prevented, it is desirable to fix it to the main reinforcement 7a.

  In this embodiment, the mesh reinforcing member 9 is only caught on the V-shaped attachment member 21 and is not particularly welded. However, the mesh reinforcing member 9 may be firmly fixed by welding or the like.

  Further, the length of the locking portion 21a of the V-shaped attachment member 21 is particularly limited as long as the mesh 9a of the mesh reinforcing member 9 can be passed through and the mesh reinforcing member 9 can be sufficiently sandwiched. is not. Further, the position of the locking portion 21 a of the V-shaped attachment member 21 can be arbitrarily changed according to the position of the mesh reinforcing member 9 in the thickness direction of the ALC panel 1.

  Further, among the coupling positions of the reinforcing bar mat 7 and the net-like reinforcing member 9 by the V-shaped attachment member 21, the coupling portion existing above is applied with the locking portion 21a of the V-shaped attachment member 21 facing downward. In the coupling position existing below, it is more preferable to construct the engaging portion 21a of the V-shaped attachment member 21 upward so as to prevent a problem that the mesh reinforcing member 9 is not fixed due to vibration or the like.

  DESCRIPTION OF SYMBOLS 1 ... ALC panel (lightweight cellular concrete panel), 5A, 5B ... Reinforcement structure, 7 ... Reinforcement reinforcement mat, 9 ... Reticulated reinforcement member, 9a ... Mesh, 11 ... Pi-type attachment member, 11a ... Supporting part, 11b ... Clamp 21, V-shaped attachment member, 21 a, locking portion, 21 b, arm portion, L, axis.

Claims (4)

A method of manufacturing a lightweight aerated concrete panel manufactured by surrounding a reinforcing bar structure including a reinforcing bar mat in a panel shape with a raw material slurry, and foaming and curing the raw material slurry,
A reinforcing bar structure that forms the reinforcing bar structure by disposing the reinforcing bar mat and the net-like reinforcing member opposite to each other and connecting the reinforcing bar mat and the net-like reinforcing member in a separated state via an attachment member. A method for producing a lightweight cellular concrete panel, comprising a forming step.   The method for producing a lightweight cellular concrete panel according to claim 1, further comprising a rust-preventing step of immersing the reinforcing bar structure in a rust-preventing liquid and performing a rust-proofing treatment. The mounting member is disposed through a mesh of the mesh reinforcing member and abuts against the mesh reinforcing member, and is installed on the support portion with a gap corresponding to the thickness of the mesh reinforcing member. A pair of clip portions,
In the reinforcing bar structure forming step,
The attachment member is passed through the mesh of the mesh reinforcing member, and the support member is supported against the mesh reinforcing member by sandwiching the mesh reinforcing member between the pair of the sandwiching portions to support the mesh reinforcing member. 3. The method of manufacturing a lightweight cellular concrete panel according to claim 1, wherein the reinforcing bar mat and the mesh reinforcing member are joined apart from each other by fixing a portion to the reinforcing bar mat. The mounting member includes a locking portion bent in a V shape, and a pair of arm portions protruding from both ends of the locking portion and facing each other on the same axis across the locking portion. ,
In the reinforcing bar structure forming step,
By passing the attachment member through the mesh of the mesh reinforcing member, and supporting the mesh reinforcing member by the locking portion, and fixing the arm portion to the reinforcement reinforcing mat, the reinforcement reinforcing mat and the mesh reinforcing member 3. The method for producing a lightweight cellular concrete panel according to claim 1, wherein the two are connected in a separated state.

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